A comparative leakage study on Er, Cr: YSGG laser- and bur- prepared Class V cavities restored with a low-shrinkage composite using different filling techniques
Braz. j. oral sci
; 12(2): 119-124, Apr.-June 2013. ilus
Article
em En
| LILACS, BBO
| ID: lil-694430
Biblioteca responsável:
BR218.1
ABSTRACT
Aim:
To evaluate the leakage on Er,CrYSGG laser- and bur- prepared Class V cavities restoredwith a silorane-based composite resin using different insertion techniquesMethods:
40 cavitieswere outlined according to the type of instrument [Er,CrYSGG laser (3.0 W power, energy perpulse of 150 mJ, fluence of 53.57J/cm2, pulse duration of 140-200 μs, 20 Hz repetition rate and55/65% air/water spray) or diamond bur]; and the type of filling technique (bulk increment orincremental). Four experimental groups were obtained (n=10) G1- diamond bur (DB) andincremental (I); G2- DB and bulk increment (BI); G3- Er,CrYSGG and I; and G4- Er,CrYSGGand BI. Specimens were restored with a silorane-based composite resin (Filtek P90, 3M/ESPE),subjected to 500 thermal cycles, sealed, infiltrated with 2% (w/v) methylene blue and sectioned inhalves. Specimen analysis was scored based on a scale. Statistical analyses were done usingthe Kruskal-Wallis and Student Newman-Keuls tests (α=0.05).Results:
Statistically significantdifferences were observed between G2 and G4 (p=0.003) and between G1 and G2 (p=0.028).The filling technique did not influence the pattern of dye leakage in the cavity walls (p=0.151).Conclusions:
Less leakage was observed when Er,CrYSGG cavities were restored withsilorane-based composite resin, using the bulk increment technique. Nevertheless, cavities doneusing diamond bur have less leakage only when incrementally restored.
Texto completo:
1
Base de dados:
BBO
/
LILACS
Assunto principal:
Resinas Compostas
/
Preparo do Dente
/
Infiltração Dentária
/
Polimerização
/
Lasers
Idioma:
En
Revista:
Braz. j. oral sci
/
Brazilian journal of oral sciences (Impresso)
/
Brazilian journal of oral sciences (Online)
Assunto da revista:
ODONTOLOGIA
Ano de publicação:
2013
Tipo de documento:
Article
País de afiliação:
Brasil