Cargando…
IN VITRO EVALUATION OF ROOT CANAL PREPARATION USING OSCILLATORY AND ROTARY SYSTEMS IN FLATTENED ROOT CANALS
OBJECTIVE: The aim of this study was to evaluate the biomechanical preparation of flattened root canals using the following systems: Endo-Eze AET stainless steel oscillatory instruments (Ultradent) and RaCe rotary NiTi instruments (FKG Dentaire). MATERIALS AND METHODS: Twenty extracted human mandibu...
Autores principales: | , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Faculdade de Odontologia de Bauru da Universidade de São Paulo
2007
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4327215/ https://www.ncbi.nlm.nih.gov/pubmed/19089103 http://dx.doi.org/10.1590/S1678-77572007000100014 |
_version_ | 1782357034634575872 |
---|---|
author | Rasquin, Luis Cardoso de Carvalho, Fabíola Bastos Lima, Regina Karla de Pontes |
author_facet | Rasquin, Luis Cardoso de Carvalho, Fabíola Bastos Lima, Regina Karla de Pontes |
author_sort | Rasquin, Luis Cardoso |
collection | PubMed |
description | OBJECTIVE: The aim of this study was to evaluate the biomechanical preparation of flattened root canals using the following systems: Endo-Eze AET stainless steel oscillatory instruments (Ultradent) and RaCe rotary NiTi instruments (FKG Dentaire). MATERIALS AND METHODS: Twenty extracted human mandibular incisors were randomly assigned to two groups: Group 1 - Instrumentation with oscillatory Endo-Eze AET files (oscillatory technique); Group 2 - Instrumentation with rotary NiTi RaCe files (rotary technique). The teeth were decoronated, had their apices and coronal openingssealed with sticky wax and were embedded in crystal-clear orthophtalic polyester resin. The roots were sectioned transversally with diamond discs at 10 mm (middle third) and 5 mm (apical third) from the apex and the segments were reassembled for instrumentation. The sections were photographed before and after root canal instrumentation and evaluated with respect to whether the original root canal shape was modified by instrumentation. To evaluate the differences in the root canal shape before and after biomechanical preparation, scores were given regarding the instruments touch on the intracanal walls. RESULTS: In middle third of the root canals instrumented with the rotary system, there was a change in the original canal anatomy (p<0.05), with formation of a protuberance in the mesiodistal direction. This protuberance did not occur when the oscillatory instrumentation was used. The oscillatory system had better results in the middle and apical thirds as evaluated by Dunn’s multiple-comparison test (p>0.05). CONCLUSION: Under the tested conditions, Endo-Eze oscillatory system yielded the instrumentation of all flattened root canal walls, maintaining the canal original shape throughout the biomechanical preparation, and was more effective than RaCe rotary system. |
format | Online Article Text |
id | pubmed-4327215 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2007 |
publisher | Faculdade de Odontologia de Bauru da Universidade de São Paulo |
record_format | MEDLINE/PubMed |
spelling | pubmed-43272152015-04-16 IN VITRO EVALUATION OF ROOT CANAL PREPARATION USING OSCILLATORY AND ROTARY SYSTEMS IN FLATTENED ROOT CANALS Rasquin, Luis Cardoso de Carvalho, Fabíola Bastos Lima, Regina Karla de Pontes J Appl Oral Sci Original Article OBJECTIVE: The aim of this study was to evaluate the biomechanical preparation of flattened root canals using the following systems: Endo-Eze AET stainless steel oscillatory instruments (Ultradent) and RaCe rotary NiTi instruments (FKG Dentaire). MATERIALS AND METHODS: Twenty extracted human mandibular incisors were randomly assigned to two groups: Group 1 - Instrumentation with oscillatory Endo-Eze AET files (oscillatory technique); Group 2 - Instrumentation with rotary NiTi RaCe files (rotary technique). The teeth were decoronated, had their apices and coronal openingssealed with sticky wax and were embedded in crystal-clear orthophtalic polyester resin. The roots were sectioned transversally with diamond discs at 10 mm (middle third) and 5 mm (apical third) from the apex and the segments were reassembled for instrumentation. The sections were photographed before and after root canal instrumentation and evaluated with respect to whether the original root canal shape was modified by instrumentation. To evaluate the differences in the root canal shape before and after biomechanical preparation, scores were given regarding the instruments touch on the intracanal walls. RESULTS: In middle third of the root canals instrumented with the rotary system, there was a change in the original canal anatomy (p<0.05), with formation of a protuberance in the mesiodistal direction. This protuberance did not occur when the oscillatory instrumentation was used. The oscillatory system had better results in the middle and apical thirds as evaluated by Dunn’s multiple-comparison test (p>0.05). CONCLUSION: Under the tested conditions, Endo-Eze oscillatory system yielded the instrumentation of all flattened root canal walls, maintaining the canal original shape throughout the biomechanical preparation, and was more effective than RaCe rotary system. Faculdade de Odontologia de Bauru da Universidade de São Paulo 2007-02 /pmc/articles/PMC4327215/ /pubmed/19089103 http://dx.doi.org/10.1590/S1678-77572007000100014 Text en http://creativecommons.org/licenses/by-nc/3.0/ This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License, which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Original Article Rasquin, Luis Cardoso de Carvalho, Fabíola Bastos Lima, Regina Karla de Pontes IN VITRO EVALUATION OF ROOT CANAL PREPARATION USING OSCILLATORY AND ROTARY SYSTEMS IN FLATTENED ROOT CANALS |
title | IN VITRO EVALUATION OF ROOT CANAL PREPARATION USING OSCILLATORY AND ROTARY SYSTEMS IN FLATTENED ROOT CANALS |
title_full | IN VITRO EVALUATION OF ROOT CANAL PREPARATION USING OSCILLATORY AND ROTARY SYSTEMS IN FLATTENED ROOT CANALS |
title_fullStr | IN VITRO EVALUATION OF ROOT CANAL PREPARATION USING OSCILLATORY AND ROTARY SYSTEMS IN FLATTENED ROOT CANALS |
title_full_unstemmed | IN VITRO EVALUATION OF ROOT CANAL PREPARATION USING OSCILLATORY AND ROTARY SYSTEMS IN FLATTENED ROOT CANALS |
title_short | IN VITRO EVALUATION OF ROOT CANAL PREPARATION USING OSCILLATORY AND ROTARY SYSTEMS IN FLATTENED ROOT CANALS |
title_sort | in vitro evaluation of root canal preparation using oscillatory and rotary systems in flattened root canals |
topic | Original Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4327215/ https://www.ncbi.nlm.nih.gov/pubmed/19089103 http://dx.doi.org/10.1590/S1678-77572007000100014 |
work_keys_str_mv | AT rasquinluiscardoso invitroevaluationofrootcanalpreparationusingoscillatoryandrotarysystemsinflattenedrootcanals AT decarvalhofabiolabastos invitroevaluationofrootcanalpreparationusingoscillatoryandrotarysystemsinflattenedrootcanals AT limareginakarladepontes invitroevaluationofrootcanalpreparationusingoscillatoryandrotarysystemsinflattenedrootcanals |