Brazilian dental science 

About: Brazilian dental science is an academic journal published by São Paulo State University. The journal publishes majorly in the area(s): Medicine & Bond strength. It has an ISSN identifier of 2178-6011. It is also open access. Over the lifetime, 1205 publications have been published receiving 3657 citations. The journal is also known as: Ciência Odontológica Brasileira.

Comparative evaluation of post-operative pain after pulpectomy with k-files, kedo-s files and mtwo files in deciduous molars -a randomized clinical trial

Abstract: Objective: Despite the tortuous course of primary root canal system, a paradigm shift occurred from conventional hand files to rotary system, which lead to faster, cost-effective, uniform and predictable fillings. One of the many advantages being, reduction in post-operative pain with the use of rotary system. Many rotary file systems were introduced, with the recent one, the Kedo-S. So the present study aimed to compare and evaluate the post – operative pain after pulpectomy using K-files, MTwo files and Kedo-S files in deciduous molars. Material and Methods: 75 teeth were randomly divided into three groups (group A – K-files, group B - Kedo-S files and group C - MTwo files) for pulpectomy of primary molars. Post – operative pain was assessed every 6,12,24,48 and 72 hours using facial pain scale. Results: 44% of volunteers in K-file group had moderate pain followed by Kedo-S group that is 8% and then MTwo files that is 4%. Conclusion: The least post-operative pain was found in Mtwo group followed by Kedo-S group and K-file group. Keywords Pulpectomy; Post-operative pain; MTwo; Kedo-S.

Diagnostic accuracy of dental pulse oximeter with customized sensor holder, thermal test and electric pulp test for the evaluation of pulp vitality: an in vivo study

Abstract: Background: t he efficiency of the diagnostic aids plays an important role in the treatment plan. This study aims to assess the diagnostic accuracy of dental pulse oximeter with a customized sensor holder, thermal test and electric pulp tester in assessing the actual pulp status and to evaluate the oxygen saturation level in control healthy teeth, non-vital and teeth with irreversible pulpitis. Material and methods: t hirty-seven single canal teeth requiring endodontic therapy were included in the study. The selected teeth were tested with dental pulse oximeter, electric pulp test, cold spray, and heated gutta percha stick. Between each test a time lag of 2 minutes was allowed for the central sensitization to occur. Three blinded operators were involved in the study. The actual status of the pulp was evaluated after the initiation of endodontic treatment. To assess the actual pulp status direct visual examination of access cavity as performed. The data was statistically analysed using (ANOVA) Analysis of Variance and Post-hoc Tukey test. Results: sensitivity of pulse oximeter, heat test, cold and electric pulp test, was 100, 25, 50, and 12, respectively. The specificity of these tests was 100, 72 81, and 77, respectively. The ANOVA showed that there was statistical difference between all the groups (p=0.0005). Post-Hoc Tukey revealed that there was statistical difference among all the groups, nonvital group (p=0.0005), control group (p=0.01) and for irreversible pulpitis (p=0.01). The overall diagnostic accuracy of pulse oximeter was 100% followed by cold test 66%, heat test to be 49% and electric pulp test to be 45%. Conclusion: the custom-made holder used in the present study aided in providing accurate response for pulp vitality testing. In this study the diagnostic accuracy was high with dental pulse oximeter followed by cold, heat and the least was electric pulp tester in different pulpal conditions. KEYWORDS Cold test; Heat test; Oxygen saturation; Pulse oximeter; Vitality tests.

Durable bonds at the adhesive/dentin interface: an impossible mission or simply a moving target?

Abstract: Composite restorations have higher failure rates, more recurrent caries and increased frequency of replacement as compared to dental amalgam. Penetration of bacterial enzymes, oral fluids, and bacteria into the crevices between the tooth and composite undermines the restoration and leads to recurrent decay and failure. The gingival margin of composite restora tions is particularly vulnerable to decay and at this margin, the adhesive and its seal to dentin provides the primary barrier between the prepared tooth and the environment. The intent of this article is to examine physico-chemical factors that affect the integrity and durability of the adhesive/dentin interfacial bond; and to explore how these factors act synergistically with mechanical forces to undermine the composite restoration. The article will examine the various avenues that have been pursued to address these problems and it will explore how alterations in material chemistry could address the detrimental impact of physico-chemical stresses on the bond formed at the adhesive/dentin interface.

Escola: um espaço importante de informação em saúde bucal para a população infantil

Abstract: A escola tem sido considerada um local adequado para o desenvolvimento de programas de saude por reunir criancas em faixas etarias propicias a adocao de medidas educativas e preventivas.Apesar disso, poucos programas tem trabalhado de forma multidisciplinar, envolvendo a participacao dos professores como agentes multiplicadores de conhecimentos em saude bucal. Diante destes fatos os objetivos desta pesquisa foram: avaliar os conhecimentos em saude bucal dos professores; a forma de aquisicao destes conhecimentos; o interesse dos professores e de seus alunos pelo tema e pelo desenvolvimento de projetos pedagogicos integrados junto aos cirurgioes dentistas. Para isso foram respondidos 25 questionarios por professores de uma escola publica de Belo Horizonte (Centro Pedagogico da UFMG). A partir da analise das respostas pode-se concluir que: a escola e um espaco importante de informacao em saude, os professores e alunos tem interesse pelo tema, os professores necessitam de maiores informacoes para abordarem estes conteudos em sala de aula, os professores tem interesse na realizacao de projetos pedagogicos integrados, e a inclusao desses conteudos nos curriculos do 1∞ Grau incrementaria a abordagem desse tema pelos professores.

Assessing the quality of root canal filling and instrumentation time using kedo-s files, reciprocating files and k-files

Abstract: Objective: Pulpectomy is the conservative treatment approach that retains and preserves the primary tooth in the dental arch in its normal function and non-pathologic state until its exfoliation. Over the years, pulpectomy has been performed using various instrumentation techniques. The aim of this study was to compare the quality of root filing and instrumentation time using Kedo-S files, Reciprocating files and K-files in primary teeth. Material And Methods: A randomized clinical trial was performed on 45 primary molars equally distributed for instrumentation with Kedo-S files, reciprocating files and K-Files. Immediate post-operative digital radiographs were taken to evaluate the quality of root filing and root canal instrumentation time was also recorded. Results: Mean instrumentation time with Kedo-S was 75.6 seconds, reciprocating file was 190.6 seconds and K-file was 95.4 seconds. Highest optimal fill was obtained with Kedo-S file group, highest overfill was obtained with Kedo-S group and highest under fill was obtained with reciprocating file group. Conclusion: Kedo-S rotary system provides better quality of root canal filling in minimum instrumentation time. KEYWORDS Pulpectomy; Primary teeth; Root canal filling; Rotary files.