Papers by Mieke De Bruyne
Attribution License, which permits unrestricted use, distribution, and reproduction in any medium... more Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Theuse of optical radiation for the activation of bleaching products has not yet been completely elucidated. Laser light is suggested to enhance the oxidizing effect of hydrogen peroxide. Differentmethods of enhancing hydrogen peroxide based bleaching are possible. They can be classified into six groups: alkaline pH environment, thermal enhancement and photothermal effect, photooxidation effect and direct photobleaching, photolysis effect and photodissociation, Fenton reaction and photocatalysis, and photodynamic effect. 1. Definition The terms “whitening ” and “bleaching ” are often used inter-changeably, which can lead to confusion when interpret-ing the literature. According to the US Food and Drug Administration (FDA), whitening restores teeth to their natural tooth colour, whereas bleaching makes teeth lighter than their natural colour...
Attribution License, which permits unrestricted use, distribution, and reproduction in any medium... more Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. No studies have been performed evaluating the marginal seal of root fillings after direct exposure of root canal (RC) walls to Er,Cr:YSGG laser irradiation. Therefore, 75 root filled teeth (5 × 15–cold lateral condensation) were analyzed for through-and-through leakage (TTL) using capillary flow porometry (CFP). The cleaning protocol determined the experimental groups: (1)
International Endodontic Journal, 2007
Revue belge de médecine dentaire, 2009
Many lasers (i.e., different wavelengths) are available today for clinical applications. Not all ... more Many lasers (i.e., different wavelengths) are available today for clinical applications. Not all lasers are to be used for cavity preparation and removal of carious tissues. Erbiumlasers (Er:YAG and Er,Cr:YSGG) are suitable for these purposes (the wavelengths coincide with the highest absorption peaks of water and hydroxyapatite). The advantages during cavity preparation and caries removal are smear layer free cavity walls, selective and localised removal of tooth substance, a restricted need or the absence of anaesthesia, and cavity walls with a higher acid resistance resulting in a better protection against secondary decay. Possible side effects of erbium lasers with water cooling and used with respect for correct power setting are minimal and can be compared with those of rotary instruments. Erbium laser tooth preparation is now one of the options in the minimal invasive approach. The needs for acid etching has been debated for long. At present it has become clear that acid etchi...
Revue belge de médecine dentaire, 2003
Calcium hydroxide is a widely used material in endodontic treatment due to its high alkalinity an... more Calcium hydroxide is a widely used material in endodontic treatment due to its high alkalinity and antimicrobial properties. It is thought to create a favourable environment for periradicular repair and healing, and to stimulate hard tissue formation. The aim of the present retrospective study was to evaluate the effect of accidental and voluminous overextensions of calcium hydroxide pastes into periapical lesions and tissues on the prognosis of periapical healing. It was seen that calcium hydroxide overextensions did not disfavour healing, none of the endodontic treatments failed but healing was delayed in the majority of cases and in a number of cases extrusion induced immediate flare-ups. Therefore the deliberate extrusion of calcium hydroxide into periapical tissues is not advocated.
International Endodontic Journal, 2000
The present case demonstrates the possible detrimental effect of an overextension of a calcium hy... more The present case demonstrates the possible detrimental effect of an overextension of a calcium hydroxide intracanal dressing into the periradicular and soft tissue after iatrogenic buccal root perforation of a maxillary central incisor. At first this perforation was not recognized by the dentist, which resulted in the introduction of a large amount of non-setting calcium hydroxide paste under the gingival tissues through a dehiscence on the buccal side of the root. This report describes the consequences and management of the necrosis of the buccal gingiva and mucosa, and the subsequent treatment and follow-up of the root perforation.
International Endodontic Journal, 2005
(i) To compare the root-end sealing ability of IRM Caps (IRM), Fuji IX Capsules (Fuji IX) and Pro... more (i) To compare the root-end sealing ability of IRM Caps (IRM), Fuji IX Capsules (Fuji IX) and Pro Root MTA Tooth-Coloured Formula (MTA) in teeth obtained from cadavers. (ii) Further research on leakage study methodology by means of comparison of the fluid transport method (FTM) and capillary flow porometry (CFP). Root canal treatment was performed on 33 cadaver teeth in situ 2 weeks prior to root resection and ultrasonic retropreparation (S12/90 degrees D-tip on Suni-Max), after which the teeth were retrieved from the cadavers. Two teeth were kept as positive and negative controls. The other teeth were divided in three different groups at random, with each group receiving one of the retrofill materials. Retrofills were exposed to water 5 min after placement. The teeth were stored at 37 degrees C for 12 h after which the root filling was removed. Microleakage (L in microL day(-1)) was measured for 24 h under a pressure of 1.2 atm using FTM and recorded as L = 0, 0 < L < or = 10, L > 10. The measurements were repeated after 1 and 6 months. After 6 months, leakage was also assessed by CFP in order to measure through pores and their diameters. Results were analysed statistically using nonparametric Kruskal-Wallis and Mann-Whitney U-tests, and Spearman correlation coefficients between the results of both methods were calculated. The level of significance was set at 0.05. (i) A statistically significant difference could be demonstrated between Fuji IX and IRM at 1 month with FTM. FTM revealed a significant difference between Fuji IX and the other materials at 6 months, whereas CFP did not. However, using both methods, Fuji IX showed the best result. (ii) When comparing both techniques, CFP demonstrated through pores in all teeth, whereas with FTM in only 14 of the 31 teeth could through pores be demonstrated. A positive correlation between both methods was demonstrated. Under the conditions of this study (i) the conventionally setting glass-ionomer cement Fuji IX showed the best results when used as a root-end material and (ii) CFP appeared to be a useful method for leakage evaluation of through pores in endodontics.
International Endodontic Journal, 2009
De Bruyne MAA, De Moor RJG. Long-term sealing ability of Resilon apical root-end fillings. Intern... more De Bruyne MAA, De Moor RJG. Long-term sealing ability of Resilon apical root-end fillings. International Endodontic
Clinical Oral Investigations, 2017
Objective The objective of this study is to evaluate the influence of a calcium hydroxide intraca... more Objective The objective of this study is to evaluate the influence of a calcium hydroxide intracanal dressing (CH) on the short-and long-term sealing ability of the root canal filling using capillary flow porometry (CFP). Materials and methods To verify the repeatability of the method, five obturated specimens were submitted to CFP. Measurements were repeated three times and compared with the non-parametric Friedman test. Forty-five instrumented palatal roots were randomly divided into three groups. Group 1: specimens were obturated in one step without placement of any dressing. Group 2: CH was placed and removed after 1 week with syringe irrigation before obturation. Group 3: CH was placed and removed after 1 week with ultrasonic activation before obturation. CFP measurements were conducted at 1 week and 6 months after obturation. The intergroup comparisons were performed using the Kruskal-Wallis test and the intra-group comparison over time using the Wilcoxon signed-rank test. Significance level was set at 0.05. Results In the five specimens, no difference could be detected between the consecutive measurements for minimum, mean flow, and maximum pore diameter indicating repeatability of the method. No difference in sealing ability could be detected neither between the 3 groups at 1 week and at 6 months nor within each group between the 1 week and the 6 months measurements. Conclusions Placement of a CH did not affect significantly the short-and long-term sealing ability of the root canal filling. Clinical relevance The use of an intermediary CH does not negatively influence the quality of the root canal filling.
Journal of Endodontics, 2018
Introduction: The purpose of this study was to compare in vitro the canal and isthmus debridement... more Introduction: The purpose of this study was to compare in vitro the canal and isthmus debridement of manualdynamic, passive ultrasonic, and laser-activated irrigation with an Er:YAG laser in mesial roots of human mandibular molars. Methods: Fifty extracted mandibular molars with an isthmus were embedded in resin and sectioned axially 4 mm from the apex. The teeth were reassembled with guide pins and bolts, and the mesial canals were instrumented up to a ProTaper F2 rotary file (Dentsply Maillefer, Ballaigues, Switzerland). Teeth were randomly assigned to the following irrigant activation groups (n = 10): conventional needle irrigation (NI), manualdynamic irrigation with a ProTaper F2 gutta-percha cone, ultrasonically activated irrigation using a size 20 Irrisafe (Satelec Acteon, M erignac, France), and laser-activated irrigation (LAI) with an Er:YAG laser and a conical 400-mm fiber tip in the canal entrance or a 600-mm tip over the canal entrance. Root cross-sectional images were taken before and after final irrigation, and the area occupied by debris in the main canal and the isthmus was determined using image analysis software. Differences in debris before and after activation were statistically compared within and across groups. Results: Significant reductions in debris levels were observed in all groups, except for NI and manual-dynamic irrigation (canal only). None of the methods rendered the canal systems debris free. In the canal, LAI with an Er:YAG laser and a 600-mm tip over the canal entrance removed significantly more debris than NI. In the isthmus, LAI with an Er:YAG laser and a conical 400-mm fiber tip in the canal entrance removed significantly more debris than NI. Conclusions: Within the limitations of this in vitro study, canal and isthmus cleanliness significantly improved after irrigant activation.
Belgisch Tijdschrift Voor Tandheelkunde, 2007
Journal of Evidence-Based Dental Practice, 2022
ANAMNESIS An 8-year old Caucasian girl was referred to our specialty clinic because of the labiov... more ANAMNESIS An 8-year old Caucasian girl was referred to our specialty clinic because of the labioversed position and enamel malformation of tooth 21 (Fig. 1). The dental anamnesis revealed that she had lost tooth 61 through avulsion at the age of 2.5. The X-ray (X-ray 1) showed an extra root projecting from an enamel tubercle at the buccogingival side of the crown. In consultation with the parents, it was decided to remove the extra root in order to facilitate the alignment of the tooth with the neighbouring teeth at a later stage.
International journal of dentistry, 2014
No studies have been performed evaluating the marginal seal of root fillings after direct exposur... more No studies have been performed evaluating the marginal seal of root fillings after direct exposure of root canal (RC) walls to Er,Cr:YSGG laser irradiation. Therefore, 75 root filled teeth (5 × 15-cold lateral condensation) were analyzed for through-and-through leakage (TTL) using capillary flow porometry (CFP). The cleaning protocol determined the experimental groups: (1) irrigation with NaOCl 2.5% and EDTA 17% or standard protocol (SP), (2) SP + Er,Cr:YSGG lasing (dried RC), (3) NaOCl 2.5% + Er,Cr:YSGG lasing (dried RC), (4) SP + Er,Cr:YSGG lasing (wet RC), and (5) NaOCl 2.5% + Er,Cr:YSGG lasing (wet RC). Groups 6 to 10 consisted of the same filled teeth with resected apices. Resection was performed after the first CFP measurement. CFP was used to assess minimum, mean flow, and maximum pore diameters after 48 h. Statistics were performed using nonparametric tests (P > 0.05). Additional three roots per group were submitted to SEM of the RC walls. TTL was observed in all groups w...
Revue belge de médecine dentaire, 2007
Oral and facial piercing with different kinds of body art are being observed more frequently in m... more Oral and facial piercing with different kinds of body art are being observed more frequently in medical and dental practices. Principally, piercing is not a new form of body art and is traditional in different geographical areas. In this review, the possible risks and complications are described. Postprocedural complications are oedema, haemorrhage and infection. Other adverse outcomes include mucosal or gingival trauma, chipped or fractured teeth, increased salivary flow, calculus build-up, and interference with speech, mastication and swallowing. Dentists, and oral- and maxillofacial surgeons should be in the position to advise patients with orofocial piercings or those who plan to have this type of body art performed.
Uploads
Papers by Mieke De Bruyne