Biologic effects of dental materials

Spångberg, Larz S.W.; Engström, B; Langeland, Kaare

doi:10.1016/0030-4220(73)90338-1

Cited by 298 publications

(45 citation statements)

References 10 publications

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“…In spite of its unpleasant taste, toxicity, and inability to completely remove the smear layer, NaOCl remains the recommended irrigant of choice. [8]…”

Section: Introductionmentioning

confidence: 99%

Irrigation protocol among endodontic faculty and post-graduate students in dental colleges of India: A survey

et al. 2013

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Background:Irrigation protocol is the most critical step during the disinfection of an infected root canal system.Aim:The purpose of this study was to determine the root canal irrigation trends being practiced among the endodontic teaching faculty and post-graduate students in the dental colleges present in India.Materials and Methods:A postal invitation to participate in this national survey was sent to the Department of Conservative Dentistry and Endodontic of 294 Dental Colleges present in India. A total of 2389 forms were successfully delivered out of which 794 duly filled forms were received back. Survey participants were asked about their irrigant selection, irrigant concentration, smear layer removal protocol, and use of adjuncts during irrigation.Results:This survey elicited a positive response rate of 33.23%. Our data indicated that 92.8% of respondents use sodium hypochlorite (NaOCl) as the primary endodontic irrigant, with 26 gauge needle being most preferred for syringe irrigation, with 49.3% of them using it at a concentration of 2.6-4.0%. 68% of our respondents aim to remove the smear layer during the endodontic treatment while 47% reported using ultrasonic activation as an adjunct during their irrigation protocol.Conclusions:The findings of this survey are that the majority of teaching institutions in India are employing NaOCl (2.6-4.0%) as the primary endodontic irrigant. The concept of smear layer removal is high (68%), and there is a general trend (78%) to modify the irrigation protocol according to the status of the pulp, status of the periapex and in retreatment cases.

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“…In spite of its unpleasant taste, toxicity, and inability to completely remove the smear layer, NaOCl remains the recommended irrigant of choice. [8]…”

Section: Introductionmentioning

confidence: 99%

Irrigation protocol among endodontic faculty and post-graduate students in dental colleges of India: A survey

et al. 2013

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“…NaOCl would appear as the best available canal irrigant because of its antibacterial and organic tissue-dissolving properties,[1920] but it is not possible to remove the smear layer with NaOCl. [17182122] Nevertheless, considering the major objective of the present investigation (to compare the cleaning effectiveness of three instrumentation technique under identical conditions), a combined irrigation was used.…”

Section: Discussionmentioning

confidence: 99%

Comparative evaluation of surface characteristics of dentinal walls with and without using plastic finishing file

Singh

Nigam

2010

J Conserv Dent

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Aim:The aim of this in vitro research is to evaluate the debris present on the dentinal walls after instrumentation in mesiobuccal root of maxillary molar with Hand Protapers, Hand Profiles, Hand Hero Shapers, and finishing the dentinal walls with and without rotary plastic files using stereomicroscope.Materials and Methods:Sixty freshly extracted human maxillary first molar teeth were divided into two groups of 30 teeth each (group A and B). Both the groups were divided into three subgroups of 10 teeth each (group A had subgroups A1, A2, and A3) and (group B had subgroups B1, B2 and B3). In group A, all the 30 canals were subjected to cleaning and shaping with three different instruments system and kept unfinished. This group was named as unfinished group. In group B, all the 30 canals were subjected to cleaning and shaping with three different instruments system followed by finishing with plastic files. This group was named as finished group. The crown of each tooth was sectioned at the cementoenamel junction. Canals were prepared following conventional principles of crown down technique. After splitting the roots longitudinally, the dentinal debris of each root canal was evaluated in three areas (coronal, middle and apical thirds of the root) by means of numerical evaluation scale, using a stereomicroscope.Results:Stereomicroscopic evaluations showed that there was no significant difference in the debris scores between the subgroups when the canals were instrumented with hand Protaper, hand Profile and hand Hero Shaper in all the thirds. There was no significant difference in scores between the unfinished group and the finished group in the coronal third but significant differences were seen in middle third and apical third.Conclusions:After instrumentation with different hand instruments, the use of plastic finishing files showed cleaner canal walls.

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“…However, it is not only irritant to the periapical tissues,[8] but also inherently possesses certain disadvantages such as staining of instruments, burning of surrounding tissues,[2] unpleasant taste, high toxicity, corrosive to instruments,[9] inability to remove the smear layer, reduction in elastic modulus and flexural strength of dentin. [10]…”

Section: Introductionmentioning

confidence: 99%

Comparison of antimicrobial efficacy of propolis, Morinda citrifolia, Azadirachta indica (Neem) and 5% sodium hypochlorite on Candida albicans biofilm formed on tooth substrate: An in-vitro study

et al. 2013

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Introduction:Endodontic infections are polymicrobial in nature. Candida albicans is the most common fungus isolated from failed endodontic cases. The constant increase in antibiotic resistant strains and side-effects caused by synthetic drugs has prompted researchers to look for herbal alternatives such as propolis, Morinda citrifolia and Azadirachta indica (Neem) etc., since, the gold standard for irrigation, i.e., sodium hypochlorite has many disadvantages.Materials and Methods:Extracted human mandibular premolars were biomechanically prepared, vertically sectioned, placed in tissue culture wells exposing the root canal surface to C. albicans grown on Sabouraud Dextrose Agar to form a biofilm. At the end of 2 days, all groups were treated with test solutions and control for 10 min and evaluated for Candida growth and number of colony forming units. The readings were subjected to statistical analysis using analysis of variance and post hoc Tukey tests.Results:Sodium hypochlorite and propolis groups exhibited highest antimicrobial efficacy against C. albicans with no statistically significant difference. It was followed by the A. indica (Neem) group. M. citrifolia had limited antifungal action followed by the negative control group of saline.Conclusion:According to the results of this study, propolis can be used as an effective antifungal agent similar to that of sodium hypochlorite, although long-term in vivo studies are warranted.

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Biologic effects of dental materials

Cited by 298 publications

References 10 publications

Irrigation protocol among endodontic faculty and post-graduate students in dental colleges of India: A survey

Irrigation protocol among endodontic faculty and post-graduate students in dental colleges of India: A survey

Comparative evaluation of surface characteristics of dentinal walls with and without using plastic finishing file

Comparison of antimicrobial efficacy of propolis, Morinda citrifolia, Azadirachta indica (Neem) and 5% sodium hypochlorite on Candida albicans biofilm formed on tooth substrate: An in-vitro study

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