International journal of applied dental sciences, Jul 1, 2022
The aim is to compare the antimicrobial efficacy of calcium hydroxide, combination of sesame oil ... more The aim is to compare the antimicrobial efficacy of calcium hydroxide, combination of sesame oil with chitosan paste combination and combination of sesame oil with polyethylene glycol paste intracanal medicaments on Enterococcus Faecalis at 72 hours, 8 days and 14 days respectively. Materials and Methodology: A total of 72 single-rooted anterior teeth were selected, root canal preparation was done, and teeth were divided into three groups and contaminated with E. faecalis, which were further divided into four test groups each according to intracanal medicaments used. After 21 days, the 72 samples were randomly divided into three groups (n=18) according to the medicaments used and are as-Group 1: Negative Control, No medicament used Group 2: Calcium Hydroxide intracanal medicament paste Group 3: Sesame oil with chitosan paste Group 4: Sesame oil with polyethylene glycol The specimens were then incubated at 37 0 C in an incubator until evaluation. After 72 hours, 6 samples per group were retrieved from the incubator and analyzed. Values on continuous variable (CFU) were shown as mean ± SD across four study groups. The intergroup statistical comparisons were done using one-way analysis of variance (ANOVA) with Bonferroni's correction for multiple group comparisons. Results 1) All the medicaments showed reduction in the bacterial load of Enterococcus Faecalis. However, Calcium hydroxide medicament with Sesame oil and chitosan medicament showed better reduction in the colonies than Sesame oil with polyethylene glycol. 2) Significant reduction of bacterial load was also observed at 14 days when compared after 72 hrs and 8 days in all the three medicaments. 3) Calcium hydroxide medicament and Sesame oil with Chitosan compared to sesame oil with chitosan. Conclusion: In this study, all the three groups showed reduction in the bacterial count of Enterococcus Faecalis, however complete eradication of this stubborn organism was not achieved which is still a drawback of intracanal medication of root canal therapy. However, Calcium hydroxide medicament with Sesame oil and chitosan medicament showed better reduction in the colonies than Sesame oil with polyethylene glycol.
The pandemic of SARS-CoV-2 which started in Wuhan, China has now affected almost every corner of ... more The pandemic of SARS-CoV-2 which started in Wuhan, China has now affected almost every corner of the world. The number of death tolls continues to rise and a large number of countries have been forced to do social distancing and lockdown. Lack of targeted therapy continues to be a problem Till date there have many treatment protocols followed on a trial and error basis. Many human trials on a definitive treatment of this virus is also taking place in different part of the world. SARS-CoV-2 has the ability to bind to human angiotensin-converting enzyme 2 receptors causing deleterious effects. The main aim of this review is to critically assess every pharmacological and its immunological effects in this SARS-CoV-2 pandemic.
Aim: The aim of the study was to construct a novel fluid filtration model and analyse the working... more Aim: The aim of the study was to construct a novel fluid filtration model and analyse the working of the model for the quantitative evaluation of microleakage. Materials and Methods: An oxygen cylinder equipped with pressure adjusting device was connected to a pressurised buffer system, which was then connected to micropipette and a three-way control faucet, the faucet holds attachment for syringe at the upper portion and the tooth sample at the lower part. A tooth sample with perforation condensed with Gutta percha and without perforation was connected to the fluid filtration model, to ensure bubble displacement a bubble was introduced in micropipette. A digital SLR camera was used to record the bubble displacement, AutoCAD Software for the measurement and custom made software for calculation of microleakage. Results: The model was constructed and functioned successfully. Conclusion: This model can be used for the evaluation of microleakage of dental materials.
International journal of applied dental sciences, Jul 1, 2022
Root canal treatment is said to be completely successful when the tooth is restored and comes bac... more Root canal treatment is said to be completely successful when the tooth is restored and comes back to normal function. A more complex restoration is required after endodontic treatment when compared to normal tooth restoration, because of factors such as extensive caries, post-treatment root canal dentin and even the economics condition of the patient. With the availability of newer high strength materials like lithium disilicate dentists are now able to offer better esthetics and high strength restoration which withstands heavy occlusal forces with even thin layers. Thus, the aim of this case series is to summarize the recent advances of post endodontic restorations, various new materials their indications depending on the remaining tooth structure and the teeth that needs to be restored.
The outbreak of coronavirus disease 2019 (COVID-19) in the area of Wuhan City, Hubei Province, Ch... more The outbreak of coronavirus disease 2019 (COVID-19) in the area of Wuhan City, Hubei Province, China, has evolved rapidly into a public health crisis and has spread exponentially to other parts of the world and is declared by the W.H.O as a pandemic. Dental students studying in institutes are at a very risk of contracting the virus as they are in large scale contact with patients as well as other students who can also be asymptomatic carriers. Thus, the aim of this study was to evaluate the knowledge and practical based views of dental students. Materials and Method: A total of 12 knowledge-based questions and 16 practice-based questions were asked. The prepared questionnaire was distributed among undergraduate and postgraduate dental students of various dental institutes in the state of Maharashtra, India through a Google electronic survey system and their data were collected. Results: 208 students participated in this survey, out of which 126 (60.6%) undergraduate students and 82 (39.4%) postgraduate students answered this survey over a span of 4 days. Mixed views regarding the knowledge and practice were observed among the students with respect to answers of the questions. Conclusion: Owing to the mixed responses in this survey regarding dental students, limited knowledge will not be helpful in improving in their practices and only will lead to further toll on their mental health. Thus, SARS-Cov-2 education and preventive measures should be taught to every dental student as they are the future of dentistry.
Journal of Research in Medical and Dental Science, 2020
Aim: The aim of the present study was to evaluate and compare the 1) sterilizing effect of differ... more Aim: The aim of the present study was to evaluate and compare the 1) sterilizing effect of different disinfecting solutions on gutta-percha cones: 5.25% sodium hypochlorite, 2% chlorhexidine gluconate, propolis and ozonated water.2) to find out the minimum time required to effectively disinfect gutta -percha cones. Method: Fifty size 30 gutta-percha cones were used in this study. 40 cones were randomly divided into 4 groups of 10 samples each.5 cones served as positive control & 5 cones served as negative control. The cones were contaminated by immersion in saliva and then were disinfected by immersing in the above mentioned four disinfecting solutions: 5.25% sodium hypochlorite (G1), 2% chlorhexidine gluconate (G2), propolis (G3) and ozonated water (G4) for periods of 30 seconds and 60 seconds. After the disinfection procedure, the cones were incubated in brain heart infusion broth for 72hrs and the presence of bacterial growth was analysed by turbidity of the medium. Data was anal...
Objectives: To assess the depth in Gutta Percha (GP), upto which cutter tip can be plunged, the t... more Objectives: To assess the depth in Gutta Percha (GP), upto which cutter tip can be plunged, the temperature profile, thermal flux and thermal gradient, using finite element analysis. Materials and Methods: Endodontic obturator tips are used by dental surgeons extensively as heated cutter tips for treating root canal and other obturation procedures. Biocompatible cutter design involves challenges of both structural and thermal loads in the vicinity of the root canal area. natural gutta percha is very similar to natural rubber, which is mainly used as filler material to seal off the prepared root canal cavity against bacterial infections. The cutter is being used to heat, soften, condense and cut off the excess GP from the apical region of tooth crown with ease. The GP cutter tip geometry is selected initially based on ideal root canal geometry available. Results: In the present paper thermal model for the heat conduction behavior in GP is formed. The depth in GP cutter tip upto which...
To compare the canal transportation, centering ability, and remaining dentin thickness of WaveOne... more To compare the canal transportation, centering ability, and remaining dentin thickness of WaveOne and ProTaper systems using cone beam computed tomography. Forty extracted human single-rooted premolars were used in the present study. Preinstrumentation scanning of all teeth was taken; canal curvatures were calculated, and the samples were randomly divided into two groups, with twenty samples in each group; one group was instrumented with WaveOne system and the other group with ProTaper rotary system. Postinstrumentation scans were performed, and the two scans were compared to determine canal transportation, centering ability, and remaining dentin thickness at 3 mm, 6 mm, and 9 mm from the root apex. Student's unpaired t-test. Using Student's unpaired t-test, results were as follows: for canal transportation, Group 1 showed significant difference at 3 mm and 6 mm and insignificant difference at 9 mm while Group 2 showed insignificant difference in all the three regions. For c...
Introduction: The aim of this study was to compare calcium (Ca) ion-releasing capacity of four di... more Introduction: The aim of this study was to compare calcium (Ca) ion-releasing capacity of four different light-cured calcium hydroxide [Ca(OH)2] cements with self-cured Ca(OH)2cement. Materials and Methods: Five different brands of Ca(OH)2cements were taken and they were grouped into five groups which are as follows: Group I - Dycal (control group), Group II - Septocal, Group III – TheraCal, Group IV - Cal LC, and Group V - Hydrocal. All specimens (n = 50) were prepared by mixing and curing the cements as per manufacturer's instructions. Each sample was placed on the bottom of a 4 cm high test tube in 10 ml deionized water at 37°C. This stored water was collected for Ca analysis and replaced after 7, 14, and 21 days. In this manner, ion release was measured after 7, 14, and 21 days by inductively coupled plasma-optical emission spectroscopy test. Results: Ca ion release from all groups at various time durations was measured and mean was calculated along with the standard deviation. These values were compared using two-way ANOVA and Tukey's post hoc test which showed highly significant result with P< 0.001. Conclusions: Within the limitations of this study, light-cured Ca(OH)2cements released high amount of Ca ions compared to self-cured Ca(OH)2cements. Group V (Hydrocal) and Group III (TheraCal) were found to be the highest light-cured Ca ion releasing materials.
Endodontically treated teeth can be restored with a wide range of techniques of varying complexit... more Endodontically treated teeth can be restored with a wide range of techniques of varying complexity. Selecting the optimum restorative modality to compensate for the loss of coronal tooth structure is considered the key to restorative success. Multiple factors must be considered in choosing a nal restoration. Essential considerations include the amount of remaining sound tooth structure, occlusal function, opposing dentition, and position of tooth in the arch, as well as length, width and curvature of the root. The main indication of a post is to retain the core that can be used to support the nal restoration. The decision regarding post placement should be made based on the amount of coronal remaining tooth structure. Thus in this study we use Three Dimensional Finite Element Analysis to evaluate the stress distribution in endodontically treated single rooted premolars that were restored with different post systems- cast post, stainless steel screw post, parallel sided steel post,...
Dentists are at high risk for musculoskeletal disorders due to the nature of their work. The key ... more Dentists are at high risk for musculoskeletal disorders due to the nature of their work. The key to preventing work-related musculoskeletal disorders is dental ergonomics — the science of fitting the work environment to the dentist. Musculoskeletal disorders involve numerous risk factors including prolonged static posture, repetitive movements, suboptimal lighting, poor positioning, genetic predisposition, mental stress, physical conditioning, and age. The key to prevention of musculoskeletal disorders is application of ergonomic principles, training and education, early intervention and healthy lifestyle changes. Key Words: Musculoskeletal disorders, Ergonomics, Dentists, Pain
International journal of applied dental sciences, Jul 1, 2022
The aim is to compare the antimicrobial efficacy of calcium hydroxide, combination of sesame oil ... more The aim is to compare the antimicrobial efficacy of calcium hydroxide, combination of sesame oil with chitosan paste combination and combination of sesame oil with polyethylene glycol paste intracanal medicaments on Enterococcus Faecalis at 72 hours, 8 days and 14 days respectively. Materials and Methodology: A total of 72 single-rooted anterior teeth were selected, root canal preparation was done, and teeth were divided into three groups and contaminated with E. faecalis, which were further divided into four test groups each according to intracanal medicaments used. After 21 days, the 72 samples were randomly divided into three groups (n=18) according to the medicaments used and are as-Group 1: Negative Control, No medicament used Group 2: Calcium Hydroxide intracanal medicament paste Group 3: Sesame oil with chitosan paste Group 4: Sesame oil with polyethylene glycol The specimens were then incubated at 37 0 C in an incubator until evaluation. After 72 hours, 6 samples per group were retrieved from the incubator and analyzed. Values on continuous variable (CFU) were shown as mean ± SD across four study groups. The intergroup statistical comparisons were done using one-way analysis of variance (ANOVA) with Bonferroni's correction for multiple group comparisons. Results 1) All the medicaments showed reduction in the bacterial load of Enterococcus Faecalis. However, Calcium hydroxide medicament with Sesame oil and chitosan medicament showed better reduction in the colonies than Sesame oil with polyethylene glycol. 2) Significant reduction of bacterial load was also observed at 14 days when compared after 72 hrs and 8 days in all the three medicaments. 3) Calcium hydroxide medicament and Sesame oil with Chitosan compared to sesame oil with chitosan. Conclusion: In this study, all the three groups showed reduction in the bacterial count of Enterococcus Faecalis, however complete eradication of this stubborn organism was not achieved which is still a drawback of intracanal medication of root canal therapy. However, Calcium hydroxide medicament with Sesame oil and chitosan medicament showed better reduction in the colonies than Sesame oil with polyethylene glycol.
The pandemic of SARS-CoV-2 which started in Wuhan, China has now affected almost every corner of ... more The pandemic of SARS-CoV-2 which started in Wuhan, China has now affected almost every corner of the world. The number of death tolls continues to rise and a large number of countries have been forced to do social distancing and lockdown. Lack of targeted therapy continues to be a problem Till date there have many treatment protocols followed on a trial and error basis. Many human trials on a definitive treatment of this virus is also taking place in different part of the world. SARS-CoV-2 has the ability to bind to human angiotensin-converting enzyme 2 receptors causing deleterious effects. The main aim of this review is to critically assess every pharmacological and its immunological effects in this SARS-CoV-2 pandemic.
Aim: The aim of the study was to construct a novel fluid filtration model and analyse the working... more Aim: The aim of the study was to construct a novel fluid filtration model and analyse the working of the model for the quantitative evaluation of microleakage. Materials and Methods: An oxygen cylinder equipped with pressure adjusting device was connected to a pressurised buffer system, which was then connected to micropipette and a three-way control faucet, the faucet holds attachment for syringe at the upper portion and the tooth sample at the lower part. A tooth sample with perforation condensed with Gutta percha and without perforation was connected to the fluid filtration model, to ensure bubble displacement a bubble was introduced in micropipette. A digital SLR camera was used to record the bubble displacement, AutoCAD Software for the measurement and custom made software for calculation of microleakage. Results: The model was constructed and functioned successfully. Conclusion: This model can be used for the evaluation of microleakage of dental materials.
International journal of applied dental sciences, Jul 1, 2022
Root canal treatment is said to be completely successful when the tooth is restored and comes bac... more Root canal treatment is said to be completely successful when the tooth is restored and comes back to normal function. A more complex restoration is required after endodontic treatment when compared to normal tooth restoration, because of factors such as extensive caries, post-treatment root canal dentin and even the economics condition of the patient. With the availability of newer high strength materials like lithium disilicate dentists are now able to offer better esthetics and high strength restoration which withstands heavy occlusal forces with even thin layers. Thus, the aim of this case series is to summarize the recent advances of post endodontic restorations, various new materials their indications depending on the remaining tooth structure and the teeth that needs to be restored.
The outbreak of coronavirus disease 2019 (COVID-19) in the area of Wuhan City, Hubei Province, Ch... more The outbreak of coronavirus disease 2019 (COVID-19) in the area of Wuhan City, Hubei Province, China, has evolved rapidly into a public health crisis and has spread exponentially to other parts of the world and is declared by the W.H.O as a pandemic. Dental students studying in institutes are at a very risk of contracting the virus as they are in large scale contact with patients as well as other students who can also be asymptomatic carriers. Thus, the aim of this study was to evaluate the knowledge and practical based views of dental students. Materials and Method: A total of 12 knowledge-based questions and 16 practice-based questions were asked. The prepared questionnaire was distributed among undergraduate and postgraduate dental students of various dental institutes in the state of Maharashtra, India through a Google electronic survey system and their data were collected. Results: 208 students participated in this survey, out of which 126 (60.6%) undergraduate students and 82 (39.4%) postgraduate students answered this survey over a span of 4 days. Mixed views regarding the knowledge and practice were observed among the students with respect to answers of the questions. Conclusion: Owing to the mixed responses in this survey regarding dental students, limited knowledge will not be helpful in improving in their practices and only will lead to further toll on their mental health. Thus, SARS-Cov-2 education and preventive measures should be taught to every dental student as they are the future of dentistry.
Journal of Research in Medical and Dental Science, 2020
Aim: The aim of the present study was to evaluate and compare the 1) sterilizing effect of differ... more Aim: The aim of the present study was to evaluate and compare the 1) sterilizing effect of different disinfecting solutions on gutta-percha cones: 5.25% sodium hypochlorite, 2% chlorhexidine gluconate, propolis and ozonated water.2) to find out the minimum time required to effectively disinfect gutta -percha cones. Method: Fifty size 30 gutta-percha cones were used in this study. 40 cones were randomly divided into 4 groups of 10 samples each.5 cones served as positive control & 5 cones served as negative control. The cones were contaminated by immersion in saliva and then were disinfected by immersing in the above mentioned four disinfecting solutions: 5.25% sodium hypochlorite (G1), 2% chlorhexidine gluconate (G2), propolis (G3) and ozonated water (G4) for periods of 30 seconds and 60 seconds. After the disinfection procedure, the cones were incubated in brain heart infusion broth for 72hrs and the presence of bacterial growth was analysed by turbidity of the medium. Data was anal...
Objectives: To assess the depth in Gutta Percha (GP), upto which cutter tip can be plunged, the t... more Objectives: To assess the depth in Gutta Percha (GP), upto which cutter tip can be plunged, the temperature profile, thermal flux and thermal gradient, using finite element analysis. Materials and Methods: Endodontic obturator tips are used by dental surgeons extensively as heated cutter tips for treating root canal and other obturation procedures. Biocompatible cutter design involves challenges of both structural and thermal loads in the vicinity of the root canal area. natural gutta percha is very similar to natural rubber, which is mainly used as filler material to seal off the prepared root canal cavity against bacterial infections. The cutter is being used to heat, soften, condense and cut off the excess GP from the apical region of tooth crown with ease. The GP cutter tip geometry is selected initially based on ideal root canal geometry available. Results: In the present paper thermal model for the heat conduction behavior in GP is formed. The depth in GP cutter tip upto which...
To compare the canal transportation, centering ability, and remaining dentin thickness of WaveOne... more To compare the canal transportation, centering ability, and remaining dentin thickness of WaveOne and ProTaper systems using cone beam computed tomography. Forty extracted human single-rooted premolars were used in the present study. Preinstrumentation scanning of all teeth was taken; canal curvatures were calculated, and the samples were randomly divided into two groups, with twenty samples in each group; one group was instrumented with WaveOne system and the other group with ProTaper rotary system. Postinstrumentation scans were performed, and the two scans were compared to determine canal transportation, centering ability, and remaining dentin thickness at 3 mm, 6 mm, and 9 mm from the root apex. Student's unpaired t-test. Using Student's unpaired t-test, results were as follows: for canal transportation, Group 1 showed significant difference at 3 mm and 6 mm and insignificant difference at 9 mm while Group 2 showed insignificant difference in all the three regions. For c...
Introduction: The aim of this study was to compare calcium (Ca) ion-releasing capacity of four di... more Introduction: The aim of this study was to compare calcium (Ca) ion-releasing capacity of four different light-cured calcium hydroxide [Ca(OH)2] cements with self-cured Ca(OH)2cement. Materials and Methods: Five different brands of Ca(OH)2cements were taken and they were grouped into five groups which are as follows: Group I - Dycal (control group), Group II - Septocal, Group III – TheraCal, Group IV - Cal LC, and Group V - Hydrocal. All specimens (n = 50) were prepared by mixing and curing the cements as per manufacturer's instructions. Each sample was placed on the bottom of a 4 cm high test tube in 10 ml deionized water at 37°C. This stored water was collected for Ca analysis and replaced after 7, 14, and 21 days. In this manner, ion release was measured after 7, 14, and 21 days by inductively coupled plasma-optical emission spectroscopy test. Results: Ca ion release from all groups at various time durations was measured and mean was calculated along with the standard deviation. These values were compared using two-way ANOVA and Tukey's post hoc test which showed highly significant result with P< 0.001. Conclusions: Within the limitations of this study, light-cured Ca(OH)2cements released high amount of Ca ions compared to self-cured Ca(OH)2cements. Group V (Hydrocal) and Group III (TheraCal) were found to be the highest light-cured Ca ion releasing materials.
Endodontically treated teeth can be restored with a wide range of techniques of varying complexit... more Endodontically treated teeth can be restored with a wide range of techniques of varying complexity. Selecting the optimum restorative modality to compensate for the loss of coronal tooth structure is considered the key to restorative success. Multiple factors must be considered in choosing a nal restoration. Essential considerations include the amount of remaining sound tooth structure, occlusal function, opposing dentition, and position of tooth in the arch, as well as length, width and curvature of the root. The main indication of a post is to retain the core that can be used to support the nal restoration. The decision regarding post placement should be made based on the amount of coronal remaining tooth structure. Thus in this study we use Three Dimensional Finite Element Analysis to evaluate the stress distribution in endodontically treated single rooted premolars that were restored with different post systems- cast post, stainless steel screw post, parallel sided steel post,...
Dentists are at high risk for musculoskeletal disorders due to the nature of their work. The key ... more Dentists are at high risk for musculoskeletal disorders due to the nature of their work. The key to preventing work-related musculoskeletal disorders is dental ergonomics — the science of fitting the work environment to the dentist. Musculoskeletal disorders involve numerous risk factors including prolonged static posture, repetitive movements, suboptimal lighting, poor positioning, genetic predisposition, mental stress, physical conditioning, and age. The key to prevention of musculoskeletal disorders is application of ergonomic principles, training and education, early intervention and healthy lifestyle changes. Key Words: Musculoskeletal disorders, Ergonomics, Dentists, Pain
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