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Master's Dissertation
DOI
https://doi.org/10.11606/D.23.2008.tde-21012009-145044
Document
Author
Full name
Carla Linkevicius Gury Nishimura
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2008
Supervisor
Committee
Santos, Marcelo dos (President)
Costa, Cristiane da
Magnabosco, Rodrigo
Title in Portuguese
Análise do preenchimento de canais radiculares por três técnicas obturadoras por meio do "software" Leica QWin
Keywords in Portuguese
Materiais dentários
Obturação do canal radicular
Software
Abstract in Portuguese
O objetivo do presente estudo foi analisar o preenchimento de canais radiculares após a obturação com sistema RealSeal®, em relação à técnica de condensação lateral, do cone único e termoplastificada, por meio do software Leica Qwin. Para tanto, vinte e sete incisivos centrais inferiores foram preparados com limas rotatórias K 3Endo, hipoclorito de sódio 1,0%, pH 11 associado a Endo PTC e irrigação final relaizada com EDTA 17%. Para a obturação, dividiu-se os espécimes em três grupos, de acordo com a técnica: Grupo I (condensação lateral), Grupo II (cone único), Grupo III (termoplastificada). Após a obturação dos dentes, os mesmos permaneceram em 100% de umidade e 37 graus C, durante 7 dias. Depois disso, os dentes foram incluídos em resina ortoftálica e os blocos de resina contendo os espécimes passaram por micrótomo de tecidos duros, obtendo-se secções tranversais do terço apical, médio e cervical dos canais obturados. Os cortes foram analisados em estereomicroscópio em aumento de 40 vezes, e as imagens obtidas avaliadas no programa Leica Qwin, determinando a porcentagem de área de cimento, material principal e falhas. Os resultados obtidos foram submetidos a análise estatística pelo teste Kruskal-Wallis que determinou diferença estatística ao nível de 5%. Houve diferença entre as técnicas obturadoras, sendo a técnica de cone único a que apresentou maior porcentagem de cimento obturador nos três terços; a termoplastificada apresentou a maior porcentagem de Resilon, mas no terço médio apresentou a maior porcentagem de falhas.
Title in English
Sealing analysis of three obturations techniques through software Leica Qwin
Keywords in English
Dental materials
Obturation
Software
Abstract in English
The aim of this study was to compare the proportion of core material, endodontic sealer and voids in the lateral condensation, single cone and thermoplastic techniques, through software Leica QWin. Twenty-seven central mandibular incisors were prepared using K3 Endo with sodium hypochlorite 1,0%, pH 11, Endo-PTC and EDTA 17% for final rising. The roots were, thereafter, randomly assigned into three groups according the filling technique: Group I (lateral condensation), Group II (single cone) and Group III (thermoplastic) and RealSeal® system. After this, the roots were stored for seven days at 37 grays Celsius and 100% relative humidity. Specimens were then embedded in resin and cross-sections were obtained by cervical, middle and apical thirds using a microtome. The samples were analyzed in stereomicroscopy at a magnification of 40 times and the digital image were taken and transferred to software Leica QWin. This software was used to calculate the cross-section area of Resilon, sealer and voids. The results were compared statistically by Kruskall-Wallis test and showed 5% significant difference. The single cone was the most percentage of sealer, thermoplastic was the most of Resilon, but with the most percentage of voids in middle third.
 
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Publishing Date
2009-12-19
 
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