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Evaluation of the antimicrobial activity of each component in Grossman?s sealer
Savioli, Ricardo Novak;Pecora, Jesus Djalma;Mian, Henis;Ito, Izabel Yoko;
Brazilian Oral Research , 2006, DOI: 10.1590/S1806-83242006000200007
Abstract: the antimicrobial activity of grossman?s sealer and its components was evaluated on 13 different strains using the double layer well-diffusion method. results revealed that grossman?s sealer presented antimicrobial activity against all the tested strains. among the components of the cement, sodium tetraborate presented the greatest antimicrobial activity, both in type and diameter of the halo and ring of inhibition. sealer powder, rosin, and eugenol presented similar activity, with no effect on p. aeruginosa and c. albicans. among these, only eugenol had an effect on e. coli. zinc oxide was only active against s. sobrinus and e. coli. barium sulfate and bismuth subcarbonate did not show any antimicrobial effect.
EFFECT OF PARTICLE SIZE OF GROSSMAN'S CEMENT POWDER ON SETTING TIME
PéCORA, Jesus Djalma;SILVA, Ricardo Gariba;SAVIOLI, Ricardo Novak;VANSAN, Luis Pascoal;
Revista de Odontologia da Universidade de S?o Paulo , 1998, DOI: 10.1590/S0103-06631998000100002
Abstract: a study was conducted on the hardening time of three grossman's cements with different powder particle sizes (60, 100 and 150 mesh) using specification n. 57 of the american dental association1 (1983). the cement obtained from mesh 150 particles showed the longest hardening time (22 minutes), which was different when compared to mesh 60 (17 minutes) and 100 (17 minutes) particles.
EFFECT OF PARTICLE SIZE OF GROSSMAN'S CEMENT POWDER ON SETTING TIME  [cached]
PéCORA Jesus Djalma,SILVA Ricardo Gariba,SAVIOLI Ricardo Novak,VANSAN Luis Pascoal
Revista de Odontologia da Universidade de S?o Paulo , 1998,
Abstract: A study was conducted on the hardening time of three Grossman's cements with different powder particle sizes (60, 100 and 150 mesh) using Specification n. 57 of the AMERICAN DENTAL ASSOCIATION1 (1983). The cement obtained from mesh 150 particles showed the longest hardening time (22 minutes), which was different when compared to mesh 60 (17 minutes) and 100 (17 minutes) particles.
Antibiotic prescription for endodontic treatment: General dentist knowledge + practice in Shiraz  [cached]
Mohammad Reza Nabavizadeh,Safoora Sahebi,Ilnaz Nadian
Iranian Endodontic Journal , 2011,
Abstract: INTRODUCTION: Diseases of the dental pulp and periapical tissues are chiefly caused by microorganisms. Antibiotics are used in some endodontic cases; however, successful cases can predominantly be achieved by mechanical and chemical cleaning of the canal or surgical intervention.MATERIALS & METHODS: The aim of this study was to determine the knowledge of General Dental Practitioners (GDPs) in Shiraz in respect to antibiotic prescriptions during and after endodontic treatment. A one-page questionnaire was sent to 200 active general dentists. Of the 120 surveys returned, 93 were accepted. The data were analyzed using t-test, Chi-square, ANOVA and Fisher’s Exact Test. RESULTS: Only 29% of dentists had full knowledge (correct answers to all questions) of antibiotic prescription protocols in pulpal and periapical disease. Amoxicillin 500 mg capsule was the drug of choice of dentists. Total of 42% of GDPs had full knowledge of antibiotic prescription protocols for persistent or systemic infections cases. GDPs more recently qualified had slightly greater knowledge compared to GDPs with experience; however, this difference was not significant. Also, there was no significant difference between genders. CONCLUSION: General practitioners’ knowledge about antibiotics seems inadequate and further education is recommended to update the practitioners.
Importance of the information provided to patient before, during, and after endodontic treatment considering the Consumer’s Defense Code
Rhonan Ferreira da Silva,Loíse Barbieri,Cláudia Daniela Moreira Portilho,Mauro Machado do Prado
RSBO , 2010,
Abstract: Introduction: The Consumer’s Defense Code was published twenty-years ago and must be properly understood by all service providers, including those of health care area. In this code, the rights and obligations established for each side (professional and patient) are listed in its contents. Besides that, the legal aspects related to the supply, implementation, delivery, and warranty of products and services offered by dental practice must be obligatorily observed to avoid problems in consumer relations. Objective: Since the endodontist can be ethically and/or legally demanded due to patient’s lack of information about the endodontic treatment performed, this paper aims to discuss, through a literature review, the dentist’s legal responsibility especially considering the Consumer’s Defense Code. Conclusions: The clinician’s responsibility when performing endodontic procedures is demanded at all phases of treatment, even at a certain period after the completion of clinical procedures. Therefore, the clinician should be cautious about establishing a comprehensive treatment planning; employing an Informed and Clarified Consent form; either referring the patient or executing the final rehabilitation as soon as possible; and also determining a follow-up criterion of the cases judged necessary, establishing a follow-up appointment frequency and the necessity of radiographic evaluation.
The Evaluation of Endodontic Treatments: A Survey of Clinical Practice Using X-ray Results  [PDF]
Masson E,Henry JL,Dumais T,Busson O
Revue Médicale de l'Assurance Maladie , 2002,
Abstract: Aims: To qualitatively evaluate endodontic treatments by using postoperative X-ray results, determine the frequency of radiologically identifiable incomplete surgical treatment and to analyse information provided by clinical practitioners concerning requirements for repeat endodontic treatment and the X-rays they ordered. Method: The data consisted in answers to questionnaires and the X-ray interpretations furnished by attending dental surgeons. The guideline reference, obtained by a review of the recent literature, was presented to the French Endodontic Society. Endodontic treatments were evaluated with respect to the preparation, filling and the iatrogenic consequences visible on X-ray. Results: 97.3% of the practitioners answered the questionnaires and 1244 endodontic treatments were analyzed. 24.8% of the treatments had no visible X-ray defect whereas 36.3% showed at least one major defect with or without iatrogenic consequences. The endodontic retreatements represented 24.9% of the analyzed endodontic treatments. A relationship was found between the quality of the preparation and filling quality. Only 19.0% of the treatments included a pre, post and per-operative film, as recommended in the guidelines published by the national agency for medical development and evaluation. These were the same treatments which significantly showed the least defects visible on X-ray. Conclusion: This study showed the discrepancy between contemporary clinical concepts and actual daily practice.
Risk Assessment of Transmission of Sporadic Creutzfeldt-Jakob Disease in Endodontic Practice in Absence of Adequate Prion Inactivation  [PDF]
Nadège Bourvis, Pierre-Yves Boelle, Jean-Yves Cesbron, Alain-Jacques Valleron
PLOS ONE , 2007, DOI: 10.1371/journal.pone.0001330
Abstract: Background Experimental results evidenced the infectious potential of the dental pulp of animals infected with transmissible spongiform encephalopathies (TSE). This route of iatrogenic transmission of sporadic Creutzfeldt-Jakob disease (sCJD) may exist in humans via reused endodontic instruments if inadequate prion decontamination procedures are used. Methodology/Principal Findings To assess this risk, 10 critical parameters in the transmission process were identified, starting with contamination of an endodontic file during treatment of an infectious sCJD patient and ending with possible infection of a subsequent susceptible patient. It was assumed that a dose-risk response existed, with no-risk below threshold values. Plausible ranges of those parameters were obtained through literature search and expert opinions, and a sensitivity analysis was conducted. Without effective prion-deactivation procedures, the risk of being infected during endodontic treatment ranged between 3.4 and 13 per million procedures. The probability that more than one case was infected secondary to endodontic treatment of an infected sCJD patient ranged from 47% to 77% depending on the assumed quantity of infective material necessary for disease transmission. If current official recommendations on endodontic instrument decontamination were strictly followed, the risk of secondary infection would become quasi-null. Conclusion The risk of sCJD transmission through endodontic procedure compares with other health care risks of current concern such as death after liver biopsy or during general anaesthesia. These results show that single instrument use or adequate prion-decontamination procedures like those recently implemented in dental practice must be rigorously enforced.
Hypercementosis: a challenge for endodontic therapy  [PDF]
Fernanda Geraldes Pappen,Cecilia Definski Fagonde,Josué Martos,Luiz Fernando Machado Silveira
RSBO , 2011,
Abstract: Introduction and objective: The purpose of this study was to describe through literature review, the morphological characteristics of teeth with hypercementosis that are relevant to endodontic practice. Literature review: The pathologic deposition of cement increases proportionally as the patient’s age increases. Genetic factors seem to be related to hypercementosis occurrence in young patients. Based on literature, it is possible to notice a lack of scientific studies which guide the endodontist for treating teeth with hypercementosis, since the cement deposition lead to the length increase of the cementum canal, and consequently, to the increase of the distance from CDC junction to apical root end. Conclusion: Thus, it is clinically relevant to correlate the morphology of teeth with hypercementosis with the specific aspects of endodontic therapy, aiming to establish the limits of root canal treatment in cases of hypercementosis.
Evaluation of a strategic practice demonstration method applied to endodontic laboratory classes
Oliveira, Adriana Pachêco de;Carvalho, Erica dos Santos;Lage-Marques, José Luiz;Cavalli, Vanessa;Habitante, Sandra Márcia;Raldi, Denise Pontes;
Revista Odonto Ciência , 2012, DOI: 10.1590/S1980-65232012000200006
Abstract: purpose: to evaluate a strategic method of real time visual demonstration of the operatory procedures using an intraoral camera system and monitor videos, comparing them to those of conventional laboratory classes. methods: fifty-two structured, multiple choice questionnaires were applied to undergraduate students of the 4th year (g1) and 3rd year (g2) submitted to the traditional and strategic teaching methods, respectively. these tests were also able to detect the main problems faced by the students during the training of this operatory phase. results: students of both groups (g1- 30.8% and g2- 34.6%) considered the access cavity to be one of the most difficult phase of endodontic treatment. the results of the evaluation among the 3rd year students demonstrated that 23.1% graded the new method as excellent, 38.4% as very good and 38.5 % as good, whereas none of the students (0%) considered the method to be regular, bad or very bad. a minor accident occurrence (p<0.05) was reported by the 3rd year students (g1- 50% and g2- 34.6%). conclusion: the new strategy was found to favor learning, reduce the incidence of errors and was appraised as efficient by the students.
Influence of different kinds of rosins and hydrogenated resins on the setting time of Grossman cements
SOUSA NETO, Manoel Dami?o;GUIMAR?ES, Luis Fernando;GUERISOLI, Danilo Mathias Zanello;SAQUY, Paulo César;PéCORA, Jesus Djalma;
Revista de Odontologia da Universidade de S?o Paulo , 1999, DOI: 10.1590/S0103-06631999000100016
Abstract: in this study, the effect on the setting time by the addition of different kinds of rosin and hydrogenated resin on the grossman cement powder was evaluated. the experiments were carried out following the american dental association?s specification number 57 for root canal sealers. for this analysis, different grossman cement powders were prepared using different rosins (x, ww and wg) and hydrogenated resins (staybelite and staybelite ester 10). the study of the physicochemical properties of the grossman cements obtained the different kinds of rosins and hydrogenated resins interference on the cement?s setting time. the hydrogenated resin, having a higher ph, increased the setting time of the cement when compared to the x, ww and wg rosins.
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