Comparative evaluation of the regional micro-push-out bond strength of custom-made resin post system with a prefabricated resin post: an in vitro study.
Indian J Dent Res
; 23(4): 484-9, 2012.
Article
em En
| MEDLINE
| ID: mdl-23257482
ABSTRACT
AIM:
The purpose of the study is to compare the regional micro-push-out bond strength of custom-made resin post and a prefabricated resin post luted using self-etch adhesive and/or etch and rinse adhesive system at various regions. MATERIALS ANDMETHODS:
Forty freshly extracted human maxillary central incisors were selected for this study; 1.5-2-mm coronal to the cemento-enamel junction was removed with a diamond disk using a slow speed handpiece under cooling water. Working lengths were established, root canals were sequentially enlarged upto the apex until ISO size 50-K-file and obturated using gutta-percha and AH plus sealer by cold lateral compaction. Post spaces were prepared to a depth of 10 mm using paeso-reamer upto size #3. After preparation, each specimen was embedded in chemically cured acrylic resin. The roots were randomly assigned to four groups Group I Custom-made resin post+Self-etch adhesive, Group II Glass FRC post+Self-etch adhesive, Group III Custom-made resin post+Etch and Rinse adhesive, Group IV Glass FRC post+Etch and Rinse adhesive. Fabrication of custom-made resin post was done. All the posts were cemented using a dual cure resin luting cement. Each root was sectioned perpendicular to the long axis using a microtome and subjected to micro-push-out bond strength.RESULTS:
The micro-push-out bond strength in the coronal region, in Group I 13.5 ± 1.66 MPa, Group II 12.08 ± 0.8 MPa, Group III 11.15 ± 1.06 MPa, Group IV 11.81 ± 1.11 MPa. In the middle third region Group I 11.43 ± 0.740 MPa, Group II 10.584 ± 0.504 MPa, Group III 10.0582 ± 0.830 MPa, Group IV 10.35 ± 0772 MPa. In the apical third Group I 10.38 ± 0.878 MPa, Group II 9.59 ± 1.06 MPa, Group III 9.34 ± 0.73o MPa, Group IV 8.77 ± 1.02 MPa.CONCLUSION:
Within the limitations of the study, amongst all the four groups tested, custom-made resin post luted with self-etch system (CMPR-SE) showed higher micro-push-out bond strength values in all regions when compared to the other groups.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Técnica para Retentor Intrarradicular
/
Colagem Dentária
/
Planejamento de Prótese Dentária
/
Resinas Compostas
/
Materiais Dentários
Tipo de estudo:
Clinical_trials
Limite:
Humans
Idioma:
En
Revista:
Indian J Dent Res
Assunto da revista:
ODONTOLOGIA
Ano de publicação:
2012
Tipo de documento:
Article
País de afiliação:
Índia