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Cleaning the apical third of curved canals after different irrigation protocols
Pereira, Érika Sales Joviano; Peixoto, Isabella Faria da Cunha; Nakagawa, Rodrigo Keigo Lopes; Buono, Vicente Tadeu Lopes; Bahia, Maria Guiomar de Azevedo.
  • Pereira, Érika Sales Joviano; Federal University of Minas Gerais. Belo Horizonte. BR
  • Peixoto, Isabella Faria da Cunha; Federal University of Minas Gerais. Belo Horizonte. BR
  • Nakagawa, Rodrigo Keigo Lopes; Federal University of Minas Gerais. Belo Horizonte. BR
  • Buono, Vicente Tadeu Lopes; Federal University of Minas Gerais. Belo Horizonte. BR
  • Bahia, Maria Guiomar de Azevedo; Federal University of Minas Gerais. Belo Horizonte. BR
Braz. dent. j ; 23(4): 351-356, 2012. ilus, tab
Article in English | LILACS | ID: lil-658009
ABSTRACT
This study evaluated the protocols of sonic and vacuum irrigation regarding the capacity of debris removal from root canal systems. Canal preparations were carried out on 30 mandibular first molars using the ProTaper Universal System. Teeth were divided into two experimental groups (n=15) Group 1 sonic irrigation and Group 2 vacuum irrigation protocol. Subsequently, the mesial roots were sectioned and observed by stereomicroscopy and scanning electron microscopy. Three independent examiners evaluated images of the apical thirds according to the following scores 1= small presence of debris, 2= moderate presence of debris, and 3= dense presence of debris. Data were analyzed with ANOVA and Kruskal-Wallis tests (α=0.05). Comparison among the groups revealed that at the apical third, the root halves of Group 1 had significantly less surface debris (p=0.002) than those of Group 2. However, at 2 mm from the working length, Group 2's specimens showed less remaining debris in approximately 75% of the analyzed root canals. At the whole apical third, the sonic irrigation protocol removed significantly more debris than the vacuum protocol. However, in the region at 2 mm from the working length, the second irrigation method demonstrated a better performance.
RESUMO
Este estudo avaliou protocolos de irrigação sônica e a vácuo em relação à capacidade de remoção de debris do sistema de canais radiculares. Trinta primeiros molares mandibulares tiveram seus canais radiculares preparados pela utilização do Sistema ProTaper Universal. Os dentes foram divididos em dois grupos experimentais (n=15) Grupo 1 protocolo de irrigação sônica, e Grupo 2 protocolo de irrigação a vácuo. Posteriormente, as raízes mesiais foram seccionadas e observadas em lupa estereoscópica e microscopia eletrônica de varredura. Três examinadores independentes avaliaram as imagens do terço apical de acordo com as seguintes pontuações 1. pequena presença de debris; 2 moderada presença de debris; e 3. densa presença de debris. Os dados foram analisados pelos testes estatísticos ANOVA e Kruskal-Wallis (α=0,05). A comparação entre os grupos revelou que, no terço apical, as hemissecções radiculares do Grupo 1 apresentaram debris remanescentes de forma significativamente menor (p=0,002) do que as do Grupo 2. No entanto, a 2 mm do comprimento de trabalho, as amostras do Grupo 2 mostraram menos debris remanescentes em aproximadamente 75% dos canais radiculares analisados. Considerando todo o terço apical, o protocolo de irrigação sônica removeu significativamente mais debris do que o protocolo de irrigação a vácuo. No entanto, na região a 2 mm do comprimento de trabalho, o segundo método de irrigação demonstrou um melhor desempenho.
Subject(s)


Full text: Available Index: LILACS (Americas) Main subject: Root Canal Irrigants / Root Canal Preparation / Tooth Apex / Dental Pulp Cavity Type of study: Controlled clinical trial Limits: Humans Language: English Journal: Braz. dent. j Journal subject: Dentistry Year: 2012 Type: Article Affiliation country: Brazil Institution/Affiliation country: Federal University of Minas Gerais/BR

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Full text: Available Index: LILACS (Americas) Main subject: Root Canal Irrigants / Root Canal Preparation / Tooth Apex / Dental Pulp Cavity Type of study: Controlled clinical trial Limits: Humans Language: English Journal: Braz. dent. j Journal subject: Dentistry Year: 2012 Type: Article Affiliation country: Brazil Institution/Affiliation country: Federal University of Minas Gerais/BR