Miniresidência: Simplificando a endodontia com novas tecnologias inclusive a lima única WaveOne - Prof. Carlos Bueno

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Int Endod J June 2013 - Shaping ability of different single-file systems in severely curved root canals of extracted teeth

Abstract
Burklein S, Benten S, Scha€fer E. Shaping ability of different single-file systems in severely curved root canals of extracted teeth. International Endodontic Journal, 46, 590–597, 2013.
Aim 
To compare the shaping ability of three different single-file systems with Mtwo rotary instruments dur- ing the preparation of curved root canals in extracted teeth.

Methodology
A total of 80 root canals with cur- vatures ranging between 25° and 35° were divided into four groups of 20 canals. Based on radiographs taken prior to instrumentation, the groups were balanced with respect to the angle and the radius of canal curvature. Canals were prepared to the following apical sizes: Mtwo: size 30 using the single-length technique; Reciproc, F360, and OneShape: size 25. Using pre- and post-instrumentation radiographs, straightening of the canal curvatures was determined with a computer image analysis programme. Preparation time, changes in working length, and instrument failures were also recorded. These data were analysed statistically using ANOVA and Student–Newman–Keuls test.

Results 
During preparation, no file fractured. All instruments maintained the original canal curvature well with no significant differences between the instrument systems (P = 0.792). Instrumentation with Reciproc and OneShape was significantly faster than with F360 and Mtwo (P < 0.05), while F360 was significantly faster than Mtwo (P < 0.05). No significant differences were obtained regarding changes in working length during instrumentation with the different instruments (P = 0.784). 

Conclusion 
Under the conditions of this study, all instruments respected the original canal curvature well and were safe to use. The use of Reciproc and OneShape instruments required less time to prepare the curved canals compared with Mtwo and F360.

Keywords: canal curvature, canal straightening, F360, OneShape, reciprocal motion. 

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Caso Clínico da Profa. Rina Pelegrine - Sistema Duo de instrumentação / Prodesign S

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Aula do Prof. Eduardo Sorgi no Curso de Especialização em Endodontia da EEC

Nova turma de Especialização em Endodontia da EEC em Vila Velha-ES - Prof. Alexandre Sigrist / Profa. Andressa Pais / Profa. Elcia Bravin

Caso Clínico da Aluna de Especialização em Endodontida da EEC - Gisele Togni

Caso Clínico da Aluna de Especialização em Endodontia da EEC - Cristina Borba - Retratamento Endodôntico 11

Desobturação com Protaper D

Reintrumentação com Protaper Universal (F5)

Obturação com Híbrida de Tagger

Cristina Borba

Laboratório de Cirurgia Paraendodôntica no Curso de Mestrado da Equipe de Endodontia de Campinas

Aula do Prof. Carlos E. Fontana no Curso de Especialização em Endodontia da ABO-Santos

No último dia 05 de junho o Prof. Carlos E. Fontana (Equipe de Endodontia de Campinas) esteve na ABO-Santos no curso de Especialização em Endodontia para ministrar uma aula seguida por um hands-on do sistemas Rotatório Mtwo e Reciprocante Reciproc.

O convite foi feito pela Equipe EndoSantos , Profa. Luciana Magrin Blank Gonçalves , Prof. Luiz Antônio B. Sapia  e Prof. Guilherme Henrique R Martins.

Alex da Endovirtual colaborou com as atividades.

Caso Clínico do Aluno de Especialização em Endodontia - Henrique B R de Souza

Caso Clínico de WaveOne (Sistema Reciprocante)

Aula da Profa. Natália Pinheiro no curso de Mestrado e Especialização em Endodontia da EEC - "Dor de origem não odontogênica"

Defesa de Mestrado em Endodontia - Paula Daniela dos Reis Vieira

Dissertação: Avaliação de três sistemas rotatórios de níquel-titânio na desobturação de canais radiculares. Estudo em microscopia eletrônica de varredura.
Banca:
Prof. Alexandre Sigrist De Martin- presidente;
Prof. Carlos Eduardo da Silveira Bueno- 1o membro
Prof. Daniel Rocha - membro externo

Aula de Cirurgia Paraendodôntica com a Profa. Maria Esperança nos cursos de Especialização e Mestrado em Endodontia da EEC

Aula do Prof. Daniel Kherlakian (Endogroup) no curso de Mestrado em Endodontia da Equipe de Endodontia de Campinas

No dia 03/06 o Prof. Daniel Kherlakian esteve na São Leopoldo Mandic no curso de Mestrado em Endodontia da EEC para ministrar mais uma vez a aula de "Reintervenções em Endodontia". 

Prof. Betina Bassrani - Equipe de Endodontia de Campinas e alunos na UNIODONTO CAMPINAS

No dia 03/06/13 através do apoio da Dentsply a Prof. Betina Bassrani (University of Toronto - Canadá) esteve na Uniodonto Campinas apresentando as novas perspectivas da Instrumentaçao e Irrigação na Endodontia.

A Equipe de Endodontia de Campinas e seus alunos também participaram do evento.

JOE June 2013 - Success of Ultrasonic Technique in Removing Fractured Rotary Nickel-Titanium Endodontic Instruments from Root Canals and Its Effect on the Required Force for Root Fracture

Success of Ultrasonic Technique in Removing Fractured Rotary Nickel-Titanium Endodontic Instruments from Root Canals and Its Effect on the Required Force for Root Fracture

Hasan Shahabinejad, DDS, MS, Amirreza Ghassemi, DDS, Lida Pishbin, DDS, MS, and Arash Shahravan, DDS, MS

Introduction: 

Fracture of rotary nickel-titanium files is a real concern among endodontists; it affects the long- term prognosis of treatment. Ultrasound is a favorable technique for removing broken files, although it may result in some complications. The aim of this study was to determine the success rate of ultrasonic tech- nique in removing file fragments and to evaluate its influence on the force required to fracture a tooth root. 

Methods: 

An in vitro study was carried out on 70 extracted maxillary premolars. In the experimental group a #30/.04 taper Hero file was guided into the canal to break and lodge therein. The lodged file was removed by ultrasonic vibration and use of a dental operating microscope. The canals were instrumented with Hero files by using crown-down technique and then obturated. All the teeth were prepared for mechan- ical testing in Testometric machine to measure the required force for root fracture. The Fisher exact test and independent two-sample t test were used to analyze data. 

Results: 

Ultrasonic technique exhibited a success rate of 80% in removing broken files. Success rate in the roots with file fracture before the curve was 11.5 times more than that of file fracture cases beyond the curve. Other factors such as bypass possibility did not affect success rate. The average time required for removing file fragments was 36.3 ` 7.15 minutes, which did not significantly differ in different file locations within the canal. According to mechanical test results, ultrasonic application did not significantly affect the required force for root fracture. The force required to fracture a root did not signifi- cantly differ in various file locations. Vertical fracture in the buccolingual direction (split tooth) was the most incident fracture pattern. Procedural errors observed in this study predominantly included trans- portation, perforation, and craze line. 

Conclusions: 

Ultrasonic technique was successful in removing 80% of fractured rotary files and did not significantly affect the required force for root fracture. 

(J Endod 2013;39:824–828) 

Key Words

Fractured rotary endodontic instruments, removal, required force for root fracture, ultrasonic technique

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EEC / Prof. Carlos Bueno no Dental Canal (Belo Horizonte) 2013

O Prof. Carlos E. da Silveira Bueno esteve em Belo Horizonte 

neste último dia 30 de maio

participando do Dental Canal 2013.

EEC/Prof. Carlos Fontana no IV Congreso Latino Americano de Líderes de Opinión Colténe / México - Lima HyFlex

Prof. Carlos Fontana esteve na compania dos amigos e também Professores Celso Kenji , Alexandre Câmara, Fernando dos Reis , Celso Caldeira, Marcelo Mangelli e Sônia Mendes.

Professora e ex-aluna do Curso de Mestrado em Endodontia da 

EEC Patrícia Escobar (Paraguai) esteve no evento

Hands-on do Sistema Rotatório Hyflex CM

Prof. Antonis Chaniotis (Grécia) e Prof. Carlos Fontana (Equipe de Endodontia de Campinas)

Int Endod J maio 2013 - Efficacy of reciprocating and rotary techniques for removing filling material during root canal retreatment

Abstract

Zuolo AS, Mello JE Jr, Cunha RS, Zuolo ML, Bueno CES. Efficacy of reciprocating and rotary techniques for removing filling material during root canal retreatment. International Endodontic Journal.

Aim 

To compare the efficacy of reciprocating and rotary techniques with that of hand files for removing gutta-percha and sealer from root canals. 

Methodology 

The root canals of fifty-four human extracted maxillary central incisors were cleaned and shaped using a crown-down technique to a size 40 and filled with gutta-percha and a zinc oxide–eugenol-based sealer using a lateral compaction technique. Teeth were divided into three groups according to the technique used for removing the root filling material: group I – Gates–Glidden burs and stainless steel hand files up to size 50; group II – rotary technique with NiTi Mtwo R files and additional Mtwo files to size 50, 0.04 taper; group III – reciprocating technique with the Reciproc instrument R50, size 50, 0.05 taper. Chloroform was used as a solvent in all groups. Teeth were then split longitudinally and photo- graphed under 89 magnification. The images were transferred to a computer, and the total canal space and remaining filling material were quantified. The ratio of remaining filling material to root canal periphery was computed with the aid of Image Tool 3.0 software. The mean percentages of remaining filling material and time required to remove it were compared using the Kruskal–Wallis and Mann–Whitney tests (P < 0.05).

Results 

The mean percentage of remaining filling material was significantly higher (P < 0.05) in group II, with Mtwo rotary files (12.17%), than in group I, with the hand file technique (7.19%), and group III, with Reciproc instruments (4.57%), which were sta- tistically similar (P > 0.05). The time required to remove filling material was significantly shorter (P < 0.05) in group III (194 s), followed by group II (365 s) and group I (725 s) (P < 0.05).

Conclusion 

Remaining endodontic filling material was observed on the canal walls of all teeth regardless of the technique used. Hand files combined with Gates–Glidden burs (group I) and the reciprocating technique (group III) removed more filling material from the canal walls than the Mtwo R files. The recip- rocating technique was the most rapid method for removing gutta-percha and sealer, followed by the rotary technique and the hand file technique.

Keywords: nickel–titanium, Reciproc files, reciprocat- ing motion, root canal retreatment, rotary instruments.

Received 24 July 2012; accepted 2 February 2013 

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Profa. Betina Bassarani / Dentsply & Uniodonto Campinas

II Encontro de Endodontia do NEAB - 19 e 20/07 Salvador/BA

EEC no ENDO MEETING ABO-OSASCO 28/JUNHO

Participe e envie seu resumo concorrendo na categoria de 

painéis de caso clínico ou trabalho científico !!!

International Endodontic Journal may 2013 - Shaping ability of different single-file systems in severely curved root canals of extracted teeth

Aim 

To compare the shaping ability of three different single-file systems with Mtwo rotary instruments dur- ing the preparation of curved root canals in extracted teeth.

Methodology 

A total of 80 root canals with cur- vatures ranging between 25° and 35° were divided into four groups of 20 canals. Based on radiographs taken prior to instrumentation, the groups were balanced with respect to the angle and the radius of canal curvature. Canals were prepared to the follow- ing apical sizes: Mtwo: size 30 using the single-length technique; Reciproc, F360, and OneShape: size 25. Using pre- and post-instrumentation radiographs, straightening of the canal curvatures was determined with a computer image analysis programme. Prepara- tion time, changes in working length, and instrument failures were also recorded. 

These data were analysed statistically using ANOVA and Student–Newman–Keuls test.

Results 

During preparation, no file fractured. All instruments maintained the original canal curvature well with no significant differences between the instrument systems (P = 0.792). Instrumentation with Reciproc and OneShape was significantly faster than with F360 and Mtwo (P < 0.05), while F360 was significantly faster than Mtwo (P < 0.05). No significant differences were obtained regarding changes in working length during instrumentation with the different instruments (P = 0.784). 

Conclusion 

Under the conditions of this study, all instruments respected the original canal curvature well and were safe to use. The use of Reciproc and OneShape instruments required less time to prepare the curved canals compared with Mtwo and F360.

Keywords: canal curvature, canal straightening, F360, OneShape, reciprocal motion.

download paper in pdf