There is an increased incidence of pain and use of local anaesthesia in Dentistry. In the mandibu... more There is an increased incidence of pain and use of local anaesthesia in Dentistry. In the mandibular teeth the type of anaesthesia administered is the inferior alveolar nerve block. The success rate of this anaesthesia, especially in regards with restorative dentistry and endodontics is very poor. This paper reviews the various reasons for failure of the inferior alveolar nerve block and discusses various strategies used and experimented upon to increase its success rate and lead to an era of definitely painless dentistry.
et al.This is an open access article distributed under theCreativeCommonsAttribution License, whi... more et al.This is an open access article distributed under theCreativeCommonsAttribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Aim. To determine the antibiotic prescribing habits for pulpal and periapical pathology among dentists in Hyderabad city, India. Methodology. A total of 246 questionnaires were distributed to all the dentists registered with the local dental branch. Demographic details and questions regarding type and dosage of antibiotics prescribed for allergic and nonallergic patients were recorded. Inferential statistics were performed, and
Aim: Maxillary sinusitis of odontogenic origin accounts for approximately 10%–12% of maxillary si... more Aim: Maxillary sinusitis of odontogenic origin accounts for approximately 10%–12% of maxillary sinusitis cases. The primary objective of the present study was to analyze the vertical relationship between the maxillary posterior roots and the adjacent maxillary sinus floor (MSF) in the Indian population using cone-beam computed tomography. The secondary objective was to correlate the data with age and gender. Materials and Methods: The shortest distance between 452 maxillary posterior teeth and the adjacent border of MSF was measured. The data were divided into three groups. Group IS included maxillary posterior teeth roots protruding into the sinus, Group CO included root apices contacting the MSF, and Group OS included root apices not contacting the MSF. The data obtained were correlated with age and gender. Results: The vertical distance of the root apices of second premolars from the MSF was significantly lesser compared to the root apices of first premolars (P < 0.05). The difference between the vertical distance of buccal roots and palatal roots (PRs) of first molar from the MSF was significantly more (P < 0.05). Majority of the roots of posterior teeth were located below the MSF border (Type OS). Type IS was most frequently seen for PRs of maxillary first molars (29.12%). The frequency of Type IS decreased with increasing age. The distance between the posterior root apices and the adjacent border of the MSF was found to be more in males compared to females. Conclusion: The PRs of maxillary first molars were found to be closest to the MSF. Variation in the vertical relationship was found by age and gender.
This randomized, active-controlled, double-blind, prospective clinical trial evaluated the anesth... more This randomized, active-controlled, double-blind, prospective clinical trial evaluated the anesthetic efficacy of 2% lidocaine with 1:200,000 epinephrine versus an admixture of 2% lidocaine with 1:200,000 epinephrine and 1 mL of 4 mg dexamethasone (Twin mix) for inferior alveolar nerve blocks (IANBs) in patients with symptomatic irreversible pulpitis (SIP) of the mandibular molars. Seventy-eight patients with SIP of mandibular molars were randomly allocated to the 2 groups of 39 subjects. All patients were required to have profound lip numbness within 10 minutes of local anesthetic deposition. The efficacy of pulpal anesthesia was confirmed by absence of pain or mild pain (Heft-Parker visual analogue scale ≤54 mm) during access cavity preparation and placement of glide path files. The collected data were subjected to independent t test, chi-square test, and Fisher exact test using SPSS software version 20.0 at a significance level of 0.05. IANB success rates for the lidocaine group ...
Background: This study is aimed to analyze and compare the formation of dentinal cracks after roo... more Background: This study is aimed to analyze and compare the formation of dentinal cracks after root canal preparation with three different rotary file systems using a stereomicroscope. Materials and Methods: Forty extracted human mandibular premolars were selected and divided into three experimental groups and a control group of 10 each. The root canals were prepared in the experimental groups. Group I: ProTaper Gold files (PTG), Group II: Neo Endo flex files, and Group III: Waldent Wal flex files. No preparation was done in the control group (Group IV). The roots were sectioned at 3, 6, and 9 mm from the apex, and the surfaces were examined under a stereomicroscope. The data were analyzed using the Chi-square test. Results: There were no cracks in the control group. Neo Endo flex showed maximum cracks at 3 mm level, which was statistically significant compared to other groups (P < 0.05). There was no statistically significant difference among experimental groups at 6 mm and 9 mm levels (P > 0.05). Conclusion: All the rotary files that were tested produced dentinal cracks. Neo Endo flex files group was associated with more number of cracks than PTG and Waldent Wal flex files group. The apical section of samples showed significantly higher defects compared to the middle and coronal sections.
JORGE ISLAS RIVERA instituto de investigaciones estéticas, unam Bibliohemerografía del maestro Xa... more JORGE ISLAS RIVERA instituto de investigaciones estéticas, unam Bibliohemerografía del maestro Xavier Moyssén Echeverría Nota introductoria L a presente bibliohemerografía* del maestro Xavier Moyssén Echeverría, quien con sus consejos-siempre certeros sobre la edición de libros-mucho me ayudó, es mi aportación para el presente número de Anales del Instituto de Investigaciones Estéticas, dedicado a su memoria. Las muchas horas que pasamos durante largos años comentando sobre los libros de arte mexicano en general, y las sugerencias que hiciera para los trabajos que yo presentaba para su publicación, siempre hicieron de su compañía una experiencia enriquecedora. No hay, de mi parte, ni ingratitud ni olvido para el maestro-¡Maestro, sin duda, de tantos!-; al contrario, siempre he de agradecerle el tiempo y la buena disposición que me brindó a través de seis lustros de relación académica y amistosa. El grato empeño de manifestar su presencia entre nosotros no deja de suscitarme justificada inquietud por si mis palabras no aciertan a ponderar como es debido sus propios merecimientos. Lo hago, si no con elocuencia, sí con muy complacida cortesía al gesto cordial de quien tuvo a bien acompañarnos durante su esforzada vida, dedicada de manera tenaz y absorbente al estudio, a la investigación y a la docencia. Universitario de vocación 23 anales del instituto de investigaciones estéticas, nÚm. 78, 2001
Journal of Dental Research, Dental Clinics, Dental Prospects, 2018
Background. The present study was undertaken to evaluate the incidence of dentinal cracks during ... more Background. The present study was undertaken to evaluate the incidence of dentinal cracks during root canal preparation with different periodontal ligament simulating materials in vitro. Methods. Seventy freshly extracted human mandibular first premolars were selected and divided into 7 groups in terms of simulating material: group 1: polyether impression material; group 2: polyvinyl acetate adhesive; group 3: polyvinyl siloxane impression material; group 4: cyanoacrylate adhesive; group 5: epoxy resin adhesive; group 6: positive control, without any periodontal ligament simulation; and group 7: negative control, where neither a periodontal ligament simulating material was used nor canal preparation was carried out. Root canal preparation was carried out in all the groups followed by sectioning of roots at 3 mm, 6 mm and 9 mm. The sections were evaluated under a stereomicroscope at ×2.5 for the presence or absence of cracks. Chi-squared test was used to compare the appearance of def...
Noncarious cervical lesions may penetrate the pulp and require root canal treatment followed by c... more Noncarious cervical lesions may penetrate the pulp and require root canal treatment followed by crown placement. Such teeth may be susceptible to fracture, especially at the cervical area. To estimate which combination of restorative material and crown resulted in homogenous stress-strain distribution of endodontically treated abfracted mandibular premolar using three-dimensional finite element model (FEM). A three-dimensional model of mandibular single-rooted premolar along with alveolar bone was created in finite element analysis (FEA) software preprocessor ANSYS rel 14.5 FEM software (ANSYS Inc., Houston, USA, 1994). Cervical lesion was created in the model with specific dimensions, 3 mm mesiodistally and 2 mm gingivoocclusally with enamel occlusal margin and dentin gingival margin. Tooth was simulated to be root canal treated and restored with different types of cements and crowns followed by placing a static load of 300 N at an angle of 135°. Analysis was run and stress distrib...
Journal of clinical and diagnostic research : JCDR, 2017
Mouth rinses have been popularly used as a supplementary oral hygiene aid. A lot of commercially ... more Mouth rinses have been popularly used as a supplementary oral hygiene aid. A lot of commercially available mouth rinses possess few adverse effects, which has necessitated the search for alternative and herbal mouth rinses. The aim of the study was to assess the effect of rinsing with green coffee bean extract in comparison with chlorhexidine mouthwash and sterile water on salivary Streptococcus mutans count. A randomized parallel controlled clinical trial was planned and 45 subjects aged between 18-22 years were selected. The subjects were divided into three groups (n=15 in each group): Group A: Study group: 2% Green coffee bean extract, Group B: Positive control: 0.2% Chlorhexidine (CHX), Group C: Negative control: Sterile water. Group A subjects rinsed mouth with 5 ml of 2% Green coffee bean extract for one minute. Group B subjects rinsed mouth with 5 ml 0.2% CHX mouthwash for one minute. Group C subjects rinsed mouth with 5 ml of Sterile water for one minute twice daily for two ...
British Journal of Medicine and Medical Research, 2016
Aim: 1) To evaluate and compare changes in the micro hardness of enamel after exposure to differe... more Aim: 1) To evaluate and compare changes in the micro hardness of enamel after exposure to different cough lozenges. 2) To assess the pH of dissolved lozenge solutions, and 3) To analyze the number of components in cough lozenges using Analytical HPLC (Highperformance liquid chromatography). Study Design and Methods: Experimental Confirmatory Study.
Background: This study was done to evaluate remineralizing potential of bioactive glasses (BAGs) ... more Background: This study was done to evaluate remineralizing potential of bioactive glasses (BAGs) and amorphous calcium phosphate-casein phosphopeptide (ACP-CPP) on early enamel lesion. Materials and Methods: Twenty freshly extracted mandibular premolars were sectioned sagittally. The buccal half was impregnated in acrylic resin blocks and treated with 37% phosphoric acid in liquid form, to demineralize enamel surface to simulate early enamel lesion. The samples were divided into two groups. The samples in Group I were treated with ACP-CPP (GC Tooth Mousse) and in Group II with BAG (Sensodyne Repair and Protect) and stored in saliva to prevent dehydration. The samples were tested for microhardness. The data obtained was analyzed using ANOVA post hoc multiple comparison and independent sample t-test and presented as a mean and standard deviation. Results: All the samples showed a decrease in the microhardness after demineralization. After application of remineralizing agents, Group II showed a highly significant increase in the microhardness (P < 0.05) after 10 days, while Group I showed a significant increase in microhardness after 15 days (P < 0.05). Conclusion: Both the remineralizing agents tested in this study can be considered effective in repair and prevention of demineralization. BAG showed better results initially, but eventually both have similar remineralizing potential.
Introduction: As the smear layer (SL) produced during instrumentation adheres to the dentinal sur... more Introduction: As the smear layer (SL) produced during instrumentation adheres to the dentinal surface and prevents penetration of irrigants and medicaments, it should be removed. The aim of this study was to evaluate the ability of 17% ethylenediaminetetraacetic acid (EDTA) and white vinegar (5% pure acetic acid) to remove debris and SL produced during root canal preparation with two nickel-titanium (NiTi) file systems, Hyflex (Coltene Whaledent, Allstetten, Switzerland) and ProTaper (Dentsply, Tulsa, OK, USA). Materials and Methods: Twenty freshly extracted human, single-rooted teeth were sectioned at the cementoenamel junction and were randomly divided into four groups of five samples each. In each group, 0.5 mL of 5% NaOCl was used as the first irrigant, which was followed by either 17% EDTA or vinegar. Two groups were prepared with Hyflex rotary files and the other two with ProTaper files. Scanning electron microscopy (SEM) study was done to evaluate the SL, and the collected data were submitted for statistical analysis. Statistical analysis was performed based on Student′s t-test with P value >0.05. Results: There was no statistically significant difference between the types of instruments used (Hyflex files and ProTaper files), and 17% EDTA solution and vinegar (5% acetic acid). Conclusion: Vinegar can be relied on as an endodontic irrigant for SL removal was comparable to 17% EDTA. In addition, both types of NiTi instrument produced similar dentin surface in terms of SL when used along with EDTA and vinegar.
Aim: To determine the coronal leakage of various provisional restorations with and without intrac... more Aim: To determine the coronal leakage of various provisional restorations with and without intracanal medication over time after being exposed to human saliva. Materials and Methods: This study investigated Coltosol F, Cavit, Ketac Molar, and IRM as provisional restorative material. Calcium hydroxide and chlorhexidine were used as an intracanal medicament. Ninety-eight single rooted teeth were randomly selected and then mounted in an apparatus that isolated the crown portion of the tooth. Provisional restorative materials were placed in the access cavity following manufacturer guidelines after placement of intracanal medicament. Human saliva and brain heart infusion broth in 3:1 ratio were applied to the samples, incubated at 37°C, and results were tabulated over the course of 4 weeks by the appearance of turbidity in the lower part of the apparatus. Statistical Analysis: The data were statistically analyzed using proportional Z-test. The level of significance was set at 0.05. Results: Coltosol F and Cavit could significantly prevent the bacterial leakage up to a period of 7 days with a P value of 0.01 and 0.005, respectively. Bacterial recontamination was relatively less in the samples treated with intracanal medicaments up to 14 days. After 14 days, however, all materials leaked in over half of the samples. Conclusion: No provisional restorative material can be considered superior in providing a reliable seal after 14 days. Inter-appointments schedule should not extend beyond 2 weeks and after endodontic therapy final restoration should be completed within 1 week.
ABSTRACTObjectivesOil pulling is an age-old practice that has gained modern popularity in promoti... more ABSTRACTObjectivesOil pulling is an age-old practice that has gained modern popularity in promoting oral and systemic health. The scientific verification for this practice is insufficient. Thus, this study evaluated the effect of coconut oil pulling on the count ofStreptococcus mutansin saliva and to compare its efficacy with that of Chlorhexidine mouthwash:in vivo. The null hypothesis was that coconut oil pulling has no effect on the bacterial count in saliva.Materials and methodsA randomized controlled study was planned and 60 subjects were selected. The subjects were divided into three groups, Group A: Study Group: Oil pulling, Group B: Study Group: Chlorhexidine, and Group C: Control Group: Distilled water. Group A subjects rinsed mouth with 10 ml of coconut oil for 10 minutes. Group B subjects rinsed mouth with 5 ml Chlorhexidine mouthwash for 1 minute and Group C with 5 ml distilled water for 1 minute in the morning before brushing. Saliva samples were collected and cultured o...
Journal of biomedical materials research. Part B, Applied biomaterials, Jan 24, 2015
Trauma to the dental pulp, physical or microbiologic, can lead to inflammation of the pulp follow... more Trauma to the dental pulp, physical or microbiologic, can lead to inflammation of the pulp followed by necrosis. The current treatment modality for such cases is non-surgical root canal treatment. The damaged tissue is extirpated and the root canal system prepared. It is then obturated with an inert material such a gutta percha. In spite of advances in techniques and materials, 10%-15% of the cases may end in failure of treatment. Regenerative endodontics combines principles of endodontics, cell biology, and tissue engineering to provide an ideal treatment for inflamed and necrotic pulp. It utilizes mesenchymal stem cells, growth factors, and organ tissue culture to provide treatment. Potential treatment modalities include induction of blood clot for pulp revascularization, scaffold aided regeneration, and pulp implantation. Although in its infancy, successful treatment of damaged pulp tissue has been performed using principles of regenerative endodontics. This field is dynamic and ...
Aim: To evaluate the contact angle between epoxy resin sealer and dentin treated with different i... more Aim: To evaluate the contact angle between epoxy resin sealer and dentin treated with different irrigant solutions both in the presence and absence of smear layer. Materials and Methods: Seventy human mandibularfirst premolars were used and 140 longitudinal dentin slices were obtained from them. Each sample was irrigated with of 3% sodium hypochlorite (NaOCl), simulating the irrigation used during the chemomechanical preparation and then washed with 10ml of distilled water (DW). The samples were then divided into seven groups of 20 samples each. Group 1:NaOCl + DW, Group 2: QMix + DW, Group 3: 0.1% octenidine hydrochloride + DW, Group 4:Ethylenediaminetetraacetic acid (EDTA) + DW + NaOCl + DW, Group 5: EDTA + DW + QMix + DW, Group 6: EDTA + DW + 0.1% Octenidine Hydrochloride + DW, and Group 7(control): DW. The contact angle between AH Plus and the samples was measured using Rame Hart Goniometer followed by statistical analysis of data. Results: Values of contact angle was least when samples were treated with QMix followed by treatment with 0.1% Octenidine Hydrochloride followed by 3% NaOCl. Removal of smear layer reduced contact angles in all cases except when samples were treated with 3% NaOCl. Results were statistically significant when 3% NaOCl was compared to 0.1% Octenidine Hydrochloride and QMix (P = 0.034). Statistically significant difference was seen before and after removal of smear layer for 3% NaOCl and 0.1% Octenidine Hydrochloride. (P = 0.003). Conclusion: Qmix is the irrigant of choice, but 0.1% octenidine hydrochloride may be recommended as a useful irrigant after further research.
The case reports present the endodontic management of two maxillary first molars with six canals.... more The case reports present the endodontic management of two maxillary first molars with six canals. The diagnosis of morphology of multiple canal systems was identified under magnification of the dental operating microscope and was confirmed with the help of cone beam computed tomography. This paper discusses the variations in the canal morphology and the use of the latest adjuncts in successfully diagnosing and treating unusual canal anatomy.
Thisin vitrostudy evaluated the presence of voids in powder-liquid and capsulated glass ionomer c... more Thisin vitrostudy evaluated the presence of voids in powder-liquid and capsulated glass ionomer cement. 40 cavities were prepared on root surfaces of maxillary incisors and divided into four groups. Cavities were conditioned with glass ionomer cement liquid (GC Corporation, Tokyo, Japan) in Groups 1 and 3 and with dentin conditioner (GC Corporation, Tokyo, Japan) in Groups 2 and 4. Conventional powder-liquid glass ionomer cement (GC Fuji II, GC Corporation, Tokyo, Japan) was used as a restorative material in Groups 1 and 2. Capsulated glass ionomer cement (GC Fuji II, GC Corporation, Tokyo, Japan) was used in Groups 3 and 4. Samples were sectioned and viewed under stereomicroscope to check for the presence of voids within the cement and at the cement-tooth junction. Data was analyzed using one-way ANOVA and Tukey’s post hoc tests. Group 4 showed statistically significant results (P<0.05) when compared to Groups 1 and 2 for voids within the cement. However, for voids at the margin...
Aim. To determine the antibiotic prescribing habits for pulpal and periapical pathology among den... more Aim. To determine the antibiotic prescribing habits for pulpal and periapical pathology among dentists in Hyderabad city, India.Methodology. A total of 246 questionnaires were distributed to all the dentists registered with the local dental branch. Demographic details and questions regarding type and dosage of antibiotics prescribed for allergic and nonallergic patients were recorded. Inferential statistics were performed, andP<0.05was considered statistically significant.Results. The response rate for the study was 87.8%. Around 148 (68.5%) of respondents regularly prescribed antibiotics for endodontic management. The first antibiotic of choice for patients with no history of medical allergies was a combination of amoxicillin and metronidazole, followed by amoxicillin alone (29.1%). The first antibiotic of choice in case of allergy to penicillin was erythromycin. Necrotic pulp with acute apical periodontitis with swelling and moderate/severe preoperative symptom was the conditio...
There is an increased incidence of pain and use of local anaesthesia in Dentistry. In the mandibu... more There is an increased incidence of pain and use of local anaesthesia in Dentistry. In the mandibular teeth the type of anaesthesia administered is the inferior alveolar nerve block. The success rate of this anaesthesia, especially in regards with restorative dentistry and endodontics is very poor. This paper reviews the various reasons for failure of the inferior alveolar nerve block and discusses various strategies used and experimented upon to increase its success rate and lead to an era of definitely painless dentistry.
et al.This is an open access article distributed under theCreativeCommonsAttribution License, whi... more et al.This is an open access article distributed under theCreativeCommonsAttribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Aim. To determine the antibiotic prescribing habits for pulpal and periapical pathology among dentists in Hyderabad city, India. Methodology. A total of 246 questionnaires were distributed to all the dentists registered with the local dental branch. Demographic details and questions regarding type and dosage of antibiotics prescribed for allergic and nonallergic patients were recorded. Inferential statistics were performed, and
Aim: Maxillary sinusitis of odontogenic origin accounts for approximately 10%–12% of maxillary si... more Aim: Maxillary sinusitis of odontogenic origin accounts for approximately 10%–12% of maxillary sinusitis cases. The primary objective of the present study was to analyze the vertical relationship between the maxillary posterior roots and the adjacent maxillary sinus floor (MSF) in the Indian population using cone-beam computed tomography. The secondary objective was to correlate the data with age and gender. Materials and Methods: The shortest distance between 452 maxillary posterior teeth and the adjacent border of MSF was measured. The data were divided into three groups. Group IS included maxillary posterior teeth roots protruding into the sinus, Group CO included root apices contacting the MSF, and Group OS included root apices not contacting the MSF. The data obtained were correlated with age and gender. Results: The vertical distance of the root apices of second premolars from the MSF was significantly lesser compared to the root apices of first premolars (P < 0.05). The difference between the vertical distance of buccal roots and palatal roots (PRs) of first molar from the MSF was significantly more (P < 0.05). Majority of the roots of posterior teeth were located below the MSF border (Type OS). Type IS was most frequently seen for PRs of maxillary first molars (29.12%). The frequency of Type IS decreased with increasing age. The distance between the posterior root apices and the adjacent border of the MSF was found to be more in males compared to females. Conclusion: The PRs of maxillary first molars were found to be closest to the MSF. Variation in the vertical relationship was found by age and gender.
This randomized, active-controlled, double-blind, prospective clinical trial evaluated the anesth... more This randomized, active-controlled, double-blind, prospective clinical trial evaluated the anesthetic efficacy of 2% lidocaine with 1:200,000 epinephrine versus an admixture of 2% lidocaine with 1:200,000 epinephrine and 1 mL of 4 mg dexamethasone (Twin mix) for inferior alveolar nerve blocks (IANBs) in patients with symptomatic irreversible pulpitis (SIP) of the mandibular molars. Seventy-eight patients with SIP of mandibular molars were randomly allocated to the 2 groups of 39 subjects. All patients were required to have profound lip numbness within 10 minutes of local anesthetic deposition. The efficacy of pulpal anesthesia was confirmed by absence of pain or mild pain (Heft-Parker visual analogue scale ≤54 mm) during access cavity preparation and placement of glide path files. The collected data were subjected to independent t test, chi-square test, and Fisher exact test using SPSS software version 20.0 at a significance level of 0.05. IANB success rates for the lidocaine group ...
Background: This study is aimed to analyze and compare the formation of dentinal cracks after roo... more Background: This study is aimed to analyze and compare the formation of dentinal cracks after root canal preparation with three different rotary file systems using a stereomicroscope. Materials and Methods: Forty extracted human mandibular premolars were selected and divided into three experimental groups and a control group of 10 each. The root canals were prepared in the experimental groups. Group I: ProTaper Gold files (PTG), Group II: Neo Endo flex files, and Group III: Waldent Wal flex files. No preparation was done in the control group (Group IV). The roots were sectioned at 3, 6, and 9 mm from the apex, and the surfaces were examined under a stereomicroscope. The data were analyzed using the Chi-square test. Results: There were no cracks in the control group. Neo Endo flex showed maximum cracks at 3 mm level, which was statistically significant compared to other groups (P < 0.05). There was no statistically significant difference among experimental groups at 6 mm and 9 mm levels (P > 0.05). Conclusion: All the rotary files that were tested produced dentinal cracks. Neo Endo flex files group was associated with more number of cracks than PTG and Waldent Wal flex files group. The apical section of samples showed significantly higher defects compared to the middle and coronal sections.
JORGE ISLAS RIVERA instituto de investigaciones estéticas, unam Bibliohemerografía del maestro Xa... more JORGE ISLAS RIVERA instituto de investigaciones estéticas, unam Bibliohemerografía del maestro Xavier Moyssén Echeverría Nota introductoria L a presente bibliohemerografía* del maestro Xavier Moyssén Echeverría, quien con sus consejos-siempre certeros sobre la edición de libros-mucho me ayudó, es mi aportación para el presente número de Anales del Instituto de Investigaciones Estéticas, dedicado a su memoria. Las muchas horas que pasamos durante largos años comentando sobre los libros de arte mexicano en general, y las sugerencias que hiciera para los trabajos que yo presentaba para su publicación, siempre hicieron de su compañía una experiencia enriquecedora. No hay, de mi parte, ni ingratitud ni olvido para el maestro-¡Maestro, sin duda, de tantos!-; al contrario, siempre he de agradecerle el tiempo y la buena disposición que me brindó a través de seis lustros de relación académica y amistosa. El grato empeño de manifestar su presencia entre nosotros no deja de suscitarme justificada inquietud por si mis palabras no aciertan a ponderar como es debido sus propios merecimientos. Lo hago, si no con elocuencia, sí con muy complacida cortesía al gesto cordial de quien tuvo a bien acompañarnos durante su esforzada vida, dedicada de manera tenaz y absorbente al estudio, a la investigación y a la docencia. Universitario de vocación 23 anales del instituto de investigaciones estéticas, nÚm. 78, 2001
Journal of Dental Research, Dental Clinics, Dental Prospects, 2018
Background. The present study was undertaken to evaluate the incidence of dentinal cracks during ... more Background. The present study was undertaken to evaluate the incidence of dentinal cracks during root canal preparation with different periodontal ligament simulating materials in vitro. Methods. Seventy freshly extracted human mandibular first premolars were selected and divided into 7 groups in terms of simulating material: group 1: polyether impression material; group 2: polyvinyl acetate adhesive; group 3: polyvinyl siloxane impression material; group 4: cyanoacrylate adhesive; group 5: epoxy resin adhesive; group 6: positive control, without any periodontal ligament simulation; and group 7: negative control, where neither a periodontal ligament simulating material was used nor canal preparation was carried out. Root canal preparation was carried out in all the groups followed by sectioning of roots at 3 mm, 6 mm and 9 mm. The sections were evaluated under a stereomicroscope at ×2.5 for the presence or absence of cracks. Chi-squared test was used to compare the appearance of def...
Noncarious cervical lesions may penetrate the pulp and require root canal treatment followed by c... more Noncarious cervical lesions may penetrate the pulp and require root canal treatment followed by crown placement. Such teeth may be susceptible to fracture, especially at the cervical area. To estimate which combination of restorative material and crown resulted in homogenous stress-strain distribution of endodontically treated abfracted mandibular premolar using three-dimensional finite element model (FEM). A three-dimensional model of mandibular single-rooted premolar along with alveolar bone was created in finite element analysis (FEA) software preprocessor ANSYS rel 14.5 FEM software (ANSYS Inc., Houston, USA, 1994). Cervical lesion was created in the model with specific dimensions, 3 mm mesiodistally and 2 mm gingivoocclusally with enamel occlusal margin and dentin gingival margin. Tooth was simulated to be root canal treated and restored with different types of cements and crowns followed by placing a static load of 300 N at an angle of 135°. Analysis was run and stress distrib...
Journal of clinical and diagnostic research : JCDR, 2017
Mouth rinses have been popularly used as a supplementary oral hygiene aid. A lot of commercially ... more Mouth rinses have been popularly used as a supplementary oral hygiene aid. A lot of commercially available mouth rinses possess few adverse effects, which has necessitated the search for alternative and herbal mouth rinses. The aim of the study was to assess the effect of rinsing with green coffee bean extract in comparison with chlorhexidine mouthwash and sterile water on salivary Streptococcus mutans count. A randomized parallel controlled clinical trial was planned and 45 subjects aged between 18-22 years were selected. The subjects were divided into three groups (n=15 in each group): Group A: Study group: 2% Green coffee bean extract, Group B: Positive control: 0.2% Chlorhexidine (CHX), Group C: Negative control: Sterile water. Group A subjects rinsed mouth with 5 ml of 2% Green coffee bean extract for one minute. Group B subjects rinsed mouth with 5 ml 0.2% CHX mouthwash for one minute. Group C subjects rinsed mouth with 5 ml of Sterile water for one minute twice daily for two ...
British Journal of Medicine and Medical Research, 2016
Aim: 1) To evaluate and compare changes in the micro hardness of enamel after exposure to differe... more Aim: 1) To evaluate and compare changes in the micro hardness of enamel after exposure to different cough lozenges. 2) To assess the pH of dissolved lozenge solutions, and 3) To analyze the number of components in cough lozenges using Analytical HPLC (Highperformance liquid chromatography). Study Design and Methods: Experimental Confirmatory Study.
Background: This study was done to evaluate remineralizing potential of bioactive glasses (BAGs) ... more Background: This study was done to evaluate remineralizing potential of bioactive glasses (BAGs) and amorphous calcium phosphate-casein phosphopeptide (ACP-CPP) on early enamel lesion. Materials and Methods: Twenty freshly extracted mandibular premolars were sectioned sagittally. The buccal half was impregnated in acrylic resin blocks and treated with 37% phosphoric acid in liquid form, to demineralize enamel surface to simulate early enamel lesion. The samples were divided into two groups. The samples in Group I were treated with ACP-CPP (GC Tooth Mousse) and in Group II with BAG (Sensodyne Repair and Protect) and stored in saliva to prevent dehydration. The samples were tested for microhardness. The data obtained was analyzed using ANOVA post hoc multiple comparison and independent sample t-test and presented as a mean and standard deviation. Results: All the samples showed a decrease in the microhardness after demineralization. After application of remineralizing agents, Group II showed a highly significant increase in the microhardness (P < 0.05) after 10 days, while Group I showed a significant increase in microhardness after 15 days (P < 0.05). Conclusion: Both the remineralizing agents tested in this study can be considered effective in repair and prevention of demineralization. BAG showed better results initially, but eventually both have similar remineralizing potential.
Introduction: As the smear layer (SL) produced during instrumentation adheres to the dentinal sur... more Introduction: As the smear layer (SL) produced during instrumentation adheres to the dentinal surface and prevents penetration of irrigants and medicaments, it should be removed. The aim of this study was to evaluate the ability of 17% ethylenediaminetetraacetic acid (EDTA) and white vinegar (5% pure acetic acid) to remove debris and SL produced during root canal preparation with two nickel-titanium (NiTi) file systems, Hyflex (Coltene Whaledent, Allstetten, Switzerland) and ProTaper (Dentsply, Tulsa, OK, USA). Materials and Methods: Twenty freshly extracted human, single-rooted teeth were sectioned at the cementoenamel junction and were randomly divided into four groups of five samples each. In each group, 0.5 mL of 5% NaOCl was used as the first irrigant, which was followed by either 17% EDTA or vinegar. Two groups were prepared with Hyflex rotary files and the other two with ProTaper files. Scanning electron microscopy (SEM) study was done to evaluate the SL, and the collected data were submitted for statistical analysis. Statistical analysis was performed based on Student′s t-test with P value >0.05. Results: There was no statistically significant difference between the types of instruments used (Hyflex files and ProTaper files), and 17% EDTA solution and vinegar (5% acetic acid). Conclusion: Vinegar can be relied on as an endodontic irrigant for SL removal was comparable to 17% EDTA. In addition, both types of NiTi instrument produced similar dentin surface in terms of SL when used along with EDTA and vinegar.
Aim: To determine the coronal leakage of various provisional restorations with and without intrac... more Aim: To determine the coronal leakage of various provisional restorations with and without intracanal medication over time after being exposed to human saliva. Materials and Methods: This study investigated Coltosol F, Cavit, Ketac Molar, and IRM as provisional restorative material. Calcium hydroxide and chlorhexidine were used as an intracanal medicament. Ninety-eight single rooted teeth were randomly selected and then mounted in an apparatus that isolated the crown portion of the tooth. Provisional restorative materials were placed in the access cavity following manufacturer guidelines after placement of intracanal medicament. Human saliva and brain heart infusion broth in 3:1 ratio were applied to the samples, incubated at 37°C, and results were tabulated over the course of 4 weeks by the appearance of turbidity in the lower part of the apparatus. Statistical Analysis: The data were statistically analyzed using proportional Z-test. The level of significance was set at 0.05. Results: Coltosol F and Cavit could significantly prevent the bacterial leakage up to a period of 7 days with a P value of 0.01 and 0.005, respectively. Bacterial recontamination was relatively less in the samples treated with intracanal medicaments up to 14 days. After 14 days, however, all materials leaked in over half of the samples. Conclusion: No provisional restorative material can be considered superior in providing a reliable seal after 14 days. Inter-appointments schedule should not extend beyond 2 weeks and after endodontic therapy final restoration should be completed within 1 week.
ABSTRACTObjectivesOil pulling is an age-old practice that has gained modern popularity in promoti... more ABSTRACTObjectivesOil pulling is an age-old practice that has gained modern popularity in promoting oral and systemic health. The scientific verification for this practice is insufficient. Thus, this study evaluated the effect of coconut oil pulling on the count ofStreptococcus mutansin saliva and to compare its efficacy with that of Chlorhexidine mouthwash:in vivo. The null hypothesis was that coconut oil pulling has no effect on the bacterial count in saliva.Materials and methodsA randomized controlled study was planned and 60 subjects were selected. The subjects were divided into three groups, Group A: Study Group: Oil pulling, Group B: Study Group: Chlorhexidine, and Group C: Control Group: Distilled water. Group A subjects rinsed mouth with 10 ml of coconut oil for 10 minutes. Group B subjects rinsed mouth with 5 ml Chlorhexidine mouthwash for 1 minute and Group C with 5 ml distilled water for 1 minute in the morning before brushing. Saliva samples were collected and cultured o...
Journal of biomedical materials research. Part B, Applied biomaterials, Jan 24, 2015
Trauma to the dental pulp, physical or microbiologic, can lead to inflammation of the pulp follow... more Trauma to the dental pulp, physical or microbiologic, can lead to inflammation of the pulp followed by necrosis. The current treatment modality for such cases is non-surgical root canal treatment. The damaged tissue is extirpated and the root canal system prepared. It is then obturated with an inert material such a gutta percha. In spite of advances in techniques and materials, 10%-15% of the cases may end in failure of treatment. Regenerative endodontics combines principles of endodontics, cell biology, and tissue engineering to provide an ideal treatment for inflamed and necrotic pulp. It utilizes mesenchymal stem cells, growth factors, and organ tissue culture to provide treatment. Potential treatment modalities include induction of blood clot for pulp revascularization, scaffold aided regeneration, and pulp implantation. Although in its infancy, successful treatment of damaged pulp tissue has been performed using principles of regenerative endodontics. This field is dynamic and ...
Aim: To evaluate the contact angle between epoxy resin sealer and dentin treated with different i... more Aim: To evaluate the contact angle between epoxy resin sealer and dentin treated with different irrigant solutions both in the presence and absence of smear layer. Materials and Methods: Seventy human mandibularfirst premolars were used and 140 longitudinal dentin slices were obtained from them. Each sample was irrigated with of 3% sodium hypochlorite (NaOCl), simulating the irrigation used during the chemomechanical preparation and then washed with 10ml of distilled water (DW). The samples were then divided into seven groups of 20 samples each. Group 1:NaOCl + DW, Group 2: QMix + DW, Group 3: 0.1% octenidine hydrochloride + DW, Group 4:Ethylenediaminetetraacetic acid (EDTA) + DW + NaOCl + DW, Group 5: EDTA + DW + QMix + DW, Group 6: EDTA + DW + 0.1% Octenidine Hydrochloride + DW, and Group 7(control): DW. The contact angle between AH Plus and the samples was measured using Rame Hart Goniometer followed by statistical analysis of data. Results: Values of contact angle was least when samples were treated with QMix followed by treatment with 0.1% Octenidine Hydrochloride followed by 3% NaOCl. Removal of smear layer reduced contact angles in all cases except when samples were treated with 3% NaOCl. Results were statistically significant when 3% NaOCl was compared to 0.1% Octenidine Hydrochloride and QMix (P = 0.034). Statistically significant difference was seen before and after removal of smear layer for 3% NaOCl and 0.1% Octenidine Hydrochloride. (P = 0.003). Conclusion: Qmix is the irrigant of choice, but 0.1% octenidine hydrochloride may be recommended as a useful irrigant after further research.
The case reports present the endodontic management of two maxillary first molars with six canals.... more The case reports present the endodontic management of two maxillary first molars with six canals. The diagnosis of morphology of multiple canal systems was identified under magnification of the dental operating microscope and was confirmed with the help of cone beam computed tomography. This paper discusses the variations in the canal morphology and the use of the latest adjuncts in successfully diagnosing and treating unusual canal anatomy.
Thisin vitrostudy evaluated the presence of voids in powder-liquid and capsulated glass ionomer c... more Thisin vitrostudy evaluated the presence of voids in powder-liquid and capsulated glass ionomer cement. 40 cavities were prepared on root surfaces of maxillary incisors and divided into four groups. Cavities were conditioned with glass ionomer cement liquid (GC Corporation, Tokyo, Japan) in Groups 1 and 3 and with dentin conditioner (GC Corporation, Tokyo, Japan) in Groups 2 and 4. Conventional powder-liquid glass ionomer cement (GC Fuji II, GC Corporation, Tokyo, Japan) was used as a restorative material in Groups 1 and 2. Capsulated glass ionomer cement (GC Fuji II, GC Corporation, Tokyo, Japan) was used in Groups 3 and 4. Samples were sectioned and viewed under stereomicroscope to check for the presence of voids within the cement and at the cement-tooth junction. Data was analyzed using one-way ANOVA and Tukey’s post hoc tests. Group 4 showed statistically significant results (P<0.05) when compared to Groups 1 and 2 for voids within the cement. However, for voids at the margin...
Aim. To determine the antibiotic prescribing habits for pulpal and periapical pathology among den... more Aim. To determine the antibiotic prescribing habits for pulpal and periapical pathology among dentists in Hyderabad city, India.Methodology. A total of 246 questionnaires were distributed to all the dentists registered with the local dental branch. Demographic details and questions regarding type and dosage of antibiotics prescribed for allergic and nonallergic patients were recorded. Inferential statistics were performed, andP<0.05was considered statistically significant.Results. The response rate for the study was 87.8%. Around 148 (68.5%) of respondents regularly prescribed antibiotics for endodontic management. The first antibiotic of choice for patients with no history of medical allergies was a combination of amoxicillin and metronidazole, followed by amoxicillin alone (29.1%). The first antibiotic of choice in case of allergy to penicillin was erythromycin. Necrotic pulp with acute apical periodontitis with swelling and moderate/severe preoperative symptom was the conditio...
Uploads
Papers by Mamta Kaushik