Influence of atmospheric temperature on the occurrence of irreversible pulpitis clinical cases

The present study aimed to examine the correlation between atmospheric temperature and the occurrence of irreversible pulpitis. Material and methods: Data was collected from the Department of Dentistry, Moinhos de Vento Hospital, Porto Alegre between July 2011 and December 2012. A total of 52 pulpitis clinical cases were examined in 529 days in this study. Data on the atmospheric temperature in Porto Alegre on each day was collected from the Porto Alegre Meteorology Institute. Results and Conclusion: Correlation analysis of the temperature data and pulpitis cases was conducted using Student’s t-test, with a significance level of  5%. Although no correlation was observed between the occurrence of irreversible pulpitis and atmospheric temperature, the incidence rates were higher on days when the average temperature was greater than 25ºC

Avaliação da adaptação de cones estandardizados de guta-percha de quatro sistemas mecanizados por meio de uma régua endodôntica calibradora

Objective: This study aimed to evaluate the D0 diameter of standardized gutta-percha cones for four mechanized systems: ProTaper Universal®, Mtwo®, Wave One® and Reciproc®. Methods: An endodontic calibrator ruler was used to measure the D0 diameter of 60 main cones of the above systems. Measurements were made according 3 scores as follows: gutta-percha cone fits exactly into the same hole as the endodontic ruler gauge (score 1), cone falls short of the ruler gauge whole size (score 2); or exceeding the ruler gauge hole size (score 3). The diameters D0 obtained were compared with the values reported by manufacturers. All data were analyzed by means of T Test, at 1% level of significance. Results: The average value measured was significantly higher than the measures established by manufacturers (p <0.001). Conclusion: The gutta-percha cones of ProTaper Universal® systems Mtwo®, Wave One® and Reciproc® were not standardized, except for R40 cObjetivo: Avaliar o diâmetro D0 de cones estandardizados de guta-percha de quatro sistemas mecanizados: ProTaper Universal®, Mtwo®, Wave One® e Reciproc®. Métodos: Por meio de uma régua endodôntica calibradora, foi aferido o diâmetro D0 de sessenta cones principais dos sistemas supracitados. A aferição foi realizada de acordo com os três escores a seguir: o cone de guta-percha se adapta exatamente no mesmo calibre de orifício da régua endodôntica (escore 1), o cone fica aquém ao calibre de orifício da régua (escore 2) ou além do respectivo calibre do orifício da régua (escore 3). Os diâmetros em D0 obtidos foram comparados aos valores divulgados pelos fabricantes. Todos os dados foram tratados por meio do Teste T, ao nível de significância de 1%. Resultados: As médias aferidas foram significativamente maiores do que as medidas estabelecidas pelos fabricantes (p<0,001). Somente os cones R40 do sistema Reciproc® estiveram no padrão. Conclusão: Os cones de guta-percha dos sistemas ProTaper Universal®, Mtwo®, Wave One® e Reciproc® não apresentam padronização, à exceção do cone R40 (Reciproc®). Houve uma tendência de variação do diâmetro D0 para uma maior medida

ENDODONTIC RETREATMENT: ANALYSIS OF THREE SPECIALISTS’ RETREATMENT RATES

Retratamento endodôntico é uma intervenção clínica destinada para corrigir erros que ocorreram em um tratamento realizado anteriormente. Existem várias causas de falhas. As variações anatômicas entre canais radiculares e as dificuldades de obtenção de desinfecção microbiana são relatados como duas das principais causas. No entanto, nos consultórios odontológicos de ambos os clínicos gerais e especialistas, é muito comum que as causas das indicações para retratamento endodôntico são falhas técnicas devido ao tratamento mal executado. Em vista disso, o objetivo deste estudo é analisar os registros de três especialistas em Endodontia e analisar as causas para o encaminhamento de seus pacientes retratamento endodôntico. Exame de 24,553 tratamentos realizados ao longo de períodos que variam revelou que os casos de retratamento foram responsáveis ​​por uma proporção considerável do trabalho de rotina realizados por esses especialistas, em uma média de 23% dos casos. A maioria das indicações de retratamento foram devido a falha técnica do tratamento inicial, em combinação com fatores microbianas causadas por contaminação de restaurações coronal e preparação endodôntico mal executado e enchimento

Dentistry Specialties Center: A qualitative evaluation in the perspective of the participant students

This study aimed to evaluate of qualitative form the expectation and the training that the CEO has proportionate to the student of graduation in Dentistry of the ULBRA. For this, a questionnaire with six open questions to the academics was carried out to students who were registered in this curricular discipline. Of the 43 enrolled students 29 (67%) had answered the questions. By means of the analysis of the gotten answers it can be observed that this curricular period of training was very important for the development critic and professional of the participant students

An?lise da proserva??o de 273 pulpotomias em dentes permanentes : estudo retrospectivo

Submitted by Setor de Tratamento da Informa??o - BC/PUCRS ([email protected]) on 2015-05-07T13:18:33Z No. of bitstreams: 1 468066 - Texto Completo.pdf: 1590461 bytes, checksum: 94289ddea3d1a9722974c878f05d622b (MD5)Made available in DSpace on 2015-05-07T13:18:33Z (GMT). No. of bitstreams: 1 468066 - Texto Completo.pdf: 1590461 bytes, checksum: 94289ddea3d1a9722974c878f05d622b (MD5) Previous issue date: 2015-03-20Conservative treatments of pulp are standard approaches of dentistry, both in primary teeth, as the permanent. Among the therapeutic, pulpotomy is reported in the literature as a quick option, easy to perform, affordable and with high potential for success, when correctly indicated. However, the lack of reliable diagnostic methods for pulp indications and clinical and radiographic parameters harsh for your proservation, to make before these uncertainties, a technique rarely used and implemented as definitive treatment in endodontics. Making a historical reflection, we can see great scientific advances in materials developed to conservative treatments. However, the factors that act directly on the success or failure and longevity of pulpotomy, are still unclear to our knowledge. Thus, the aim of this study was to try to clarify and understand this, from a retrospective study. Initially, the first article of this thesis was selected for a case of dens invaginatus type 3 with still open apex. Conservative treatment in one of the teeth and a classical approach to endodontic pulp necrosis was adopted in other. The invaginatus dens is an anomaly stage of tooth formation, which promotes many structural changes in the dental organ, offering great difficulties when conventional endodontic treatment is required. As a result, was executed endodontic treatment with calcium hydroxide exchanges in the main tooth and the tooth pulpotomy in invaginated, inducing its apicog?nese. After 21 years of clinical and radiographic follow-up, we observed the injury has healed and the complete root formation. The preservation of pulp vitality, followed by the formation of dentin bridge in pulpotomizado tooth, proved to be a viable alternative and definitive treatment. In the second article of the thesis, we seek a retorspectiva analysis of outcome. Reevaluated 273 pulpotomies in permanent teeth performed by a single professional, specialist in endodontics, and verify the influence of clinical, radiographic and systemic in proservation and determination of success or failure in pulpotomy. Data were analyzed using Cox regression test and Fisher's Exact Test (p = 0.05) for a period ranging from 1 to 29 years of follow up. We can conclude that pulpotomy can be performed at any age, without statistical correlation with the systemic problems. The absence of clinical symptoms and radiographic changes of peri-implant tissues, followed by the presence of dentin bridge and hermetic coronal sealing, are indicative reliable in proservation.Os tratamentos conservadores da polpa s?o abordagens rotineiras da odontologia, tanto nos dentes dec?duos, quanto nos permanentes. Dentre as terap?uticas, a pulpotomia ? apontada na literatura como uma op??o r?pida, de f?cil execu??o, acess?vel e com alto potencial de sucesso, quando corretamente indicadas. Entretanto, a inexist?ncia de m?todos de diagn?stico pulpar fidedignos para sua indica??o e par?metros cl?nicos contundentes para sua proserva??o, a tornam, diante destas incertezas, uma t?cnica pouco utilizada e implementada como tratamento definitivo na endodontia. Fazendo uma reflex?o hist?rica, percebe-se grandes avan?os cient?ficos nos materiais desenvolvidos para os tratamentos conservadores. Por?m, os fatores que atuam diretamente no sucesso ou insucesso e na longevidade da pulpotomia, ainda s?o obscuros ao nosso conhecimento. Diante disso, o objetivo deste estudo foi de tentar esclarecer e compreender este impasse, a partir de um trabalho retrospectivo. Inicialmente, o primeiro artigo desta tese foi selecionado por um caso cl?nico de dens invaginatus tipo 3 com ?pice radicular ainda aberto. Foi adotada uma conduta conservadora em um dos elementos dent?rios e uma abordagem cl?ssica de endodontia para necrose pulpar no outro. O dens invaginatus ? uma anomalia do est?gio de forma??o dent?rio, que promove muitas altera??es estruturais no ?rg?o dental, oferecendo grandes dificuldades quando o tratamento endod?ntico convencional ? solicitado. Em decorr?ncia disto, foi executado o tratamento endod?ntico com trocas de hidr?xido de c?lcio no dente principal e a pulpotomia no dente invaginado, induzindo a sua apicog?nese. Ap?s 21 anos de acompanhamento cl?nico e radiogr?fico, observamos a cura da les?o e a completa forma??o radicular. A preserva??o da vitalidade pulpar, seguida da forma??o da ponte de dentina no dente pulpotomizado, mostrou ser uma alternativa vi?vel e definitiva de tratamento. No segundo artigo da tese, buscamos uma an?lise retorspectiva de desfecho. Reavaliamos 273 pulpotomias em dentes permanentes executadas por um ?nico profissio-nal, especialista em endodontia, e verificamos a influ?ncia de fatores cl?nicos, radiogr?ficos e sist?micos na proserva??o e determina??o de sucesso ou insucesso na pulpotomia. Os dados foram analisados pelo Teste de Regress?o de Cox e Teste Exato de Fisher (p=0,05) por um per?odo que variou de 1 ? 29 anos de proserva??o. Podemos concluir que a pulpoto-mia pode ser executada em qualquer faixa et?ria, sem ter correla??o estat?stica com os problemas sist?micos. A aus?ncia de sintomas cl?nicos e altera??es radiogr?ficas dos tecidos peri-implantares, seguida da presen?a da ponte de dentina e selamento coron?rio herm?tico, s?o indicativos confi?veis na proserva??o

Avaliação da adaptação de cones estandardizados de guta-percha de quatro sistemas mecanizados por meio de uma régua endodôntica calibradora

Objective: This study aimed to evaluate the D0 diameter of standardized gutta-percha cones for four mechanized systems: ProTaper Universal®, Mtwo®, Wave One® and Reciproc®. Methods: An endodontic calibrator ruler was used to measure the D0 diameter of 60 main cones of the above systems. Measurements were made according 3 scores as follows: gutta-percha cone fits exactly into the same hole as the endodontic ruler gauge (score 1), cone falls short of the ruler gauge whole size (score 2); or exceeding the ruler gauge hole size (score 3). The diameters D0 obtained were compared with the values reported by manufacturers. All data were analyzed by means of T Test, at 1% level of significance. Results: The average value measured was significantly higher than the measures established by manufacturers (p <0.001). Conclusion: The gutta-percha cones of ProTaper Universal® systems Mtwo®, Wave One® and Reciproc® were not standardized, except for R40 cObjetivo: Avaliar o diâmetro D0 de cones estandardizados de guta-percha de quatro sistemas mecanizados: ProTaper Universal®, Mtwo®, Wave One® e Reciproc®. Métodos: Por meio de uma régua endodôntica calibradora, foi aferido o diâmetro D0 de sessenta cones principais dos sistemas supracitados. A aferição foi realizada de acordo com os três escores a seguir: o cone de guta-percha se adapta exatamente no mesmo calibre de orifício da régua endodôntica (escore 1), o cone fica aquém ao calibre de orifício da régua (escore 2) ou além do respectivo calibre do orifício da régua (escore 3). Os diâmetros em D0 obtidos foram comparados aos valores divulgados pelos fabricantes. Todos os dados foram tratados por meio do Teste T, ao nível de significância de 1%. Resultados: As médias aferidas foram significativamente maiores do que as medidas estabelecidas pelos fabricantes (p<0,001). Somente os cones R40 do sistema Reciproc® estiveram no padrão. Conclusão: Os cones de guta-percha dos sistemas ProTaper Universal®, Mtwo®, Wave One® e Reciproc® não apresentam padronização, à exceção do cone R40 (Reciproc®). Houve uma tendência de variação do diâmetro D0 para uma maior medida

Analysis of Apical Root Transportation Associated with Protaper Universal F3 and F4 Instruments by Using Digital Subtraction Radiography

Introduction: The aim of this study was to assess the occurrence of apical root transportation after the use of Pro Taper Universal rotary files sizes 3 (F3) and 4 (F4). Methods: Instruments were worked to the apex of the original canal, always by the same operator. Digital subtraction radiography images were produced in buccolingual and mesiodistal projections. A total of 25 radiographs were taken from root canals of human maxillary first molars with curvatures varying from 23-31 degrees. Quantitative data were analyzed by intraclass correlation coefficient and Wilcoxon nonparametric test (P = .05). Results: Buccolingual images revealed a significantly higher degree of apical transportation associated with F4 instruments when compared with F3 instruments in relation to the original canal (Wilcoxon test, P = .007). No significant difference was observed in mesiodistal images (P = .492). Conclusions: F3 instruments should be used with care in curved canals, and F4 instruments should be avoided in apical third preparation of curved canals. (J Endod 2010;36:1052-1055

Evaluation of the tip of standardized D0 gutta percha cones of four Rotary systems, by means of an endodontic ruler

<div><p>ABSTRACT Objective : This study aimed to evaluate the D0 diameter of standardized gutta-percha cones for four mechanized systems: ProTaper Universal®, Mtwo®, Wave One® and Reciproc®. Methods: An endodontic calibrator ruler was used to measure the D0 diameter of 60 main cones of the above systems. Measurements were made according 3 scores as follows: gutta-percha cone fits exactly into the same hole as the endodontic ruler gauge (score 1), cone falls short of the ruler gauge whole size (score 2); or exceeding the ruler gauge hole size (score 3). The diameters D0 obtained were compared with the values reported by manufacturers. All data were analyzed by means of T Test, at 1% level of significance. Results: The average value measured was significantly higher than the measures established by manufacturers (p <0.001). Conclusion : The gutta-percha cones of ProTaper Universal® systems Mtwo®, Wave One® and Reciproc® were not standardized, except for R40 cone of the Reciproc® system (Reciproc®). The trend was for variation in the D0 Diameter towards increasing measurement values.</p></div