Effects of cuspal compliance and radiant emittance of LED light on the cuspal deflection of replicated tooth cavity.
Dent Mater J
; 40(3): 827-834, 2021 May 29.
Article
em En
| MEDLINE
| ID: mdl-33692226
ABSTRACT
The aim was to investigate effects of compliance and radiant emittance on cuspal deflection. A mesio-occluso-distal cavity was replicated using a flowable composite and steel rods with different diameters. To investigate the effect of cuspal compliance on deflection, the replicated tooth and extracted human tooth cavities were bulk-filled with a micro-hybrid composite. The replicated cavities with 2.0-mm-diameter steel rods were restored with bulk-filling of the micro-hybrid or a nano bulk-fill composite and photo-cured with four protocols. The cuspal deflection was the highest in the replicated tooth without steel rod, followed by with 1.0-, 1.5-, and 2.0-mm steel rods, and significantly lower in the human tooth. Cuspal deflections showed no significant differences among light-curing protocols, and that in the micro-hybrid composite were higher than the nano bulk-fill composite. To reduce cuspal deflection of a high compliance cavity, selecting the proper composite based on physical properties is more important than light-curing protocol.
Palavras-chave
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Preparo da Cavidade Dentária
/
Restauração Dentária Permanente
Idioma:
En
Ano de publicação:
2021
Tipo de documento:
Article