Fracture Resistance of Endodontically Treated Premolars Using Nanohybrid Composite, Fiber-Reinforced Composite, Horizontal Glass Fiber Posts, and Ceramic Inlays: An In Vitro Study.
J Endod
; 49(12): 1739-1746, 2023 Dec.
Article
em En
| MEDLINE
| ID: mdl-37595683
ABSTRACT
INTRODUCTION:
This study evaluated the resistance to fracture of endodontically treated premolars (ETPs) with mesio-occluso-distal (MOD) cavities filled with nanohybrid composite (NHC), fiber-reinforced composite (FRC), horizontal glass fiber posts (HFP), and ceramic inlays (CI).METHODS:
Eighty-four intact maxillary premolars were taken, and endodontic treatment was performed followed by MOD cavity preparations (except in the control group). They were distributed into 7 groups based on type of restoration intact teeth (control group), ETP + MOD (not restored), NHC, FRC + NHC, HFP + NHC, FRC + HFP + NHC, and CI groups. Samples were subjected to universal testing machine until the fracture occurred and failure mode was visually inspected.RESULTS:
Mean and standard deviation of fracture resistance of the 7 groups ranged from 265.6 ± 68.0 N to 1023.7 ± 76.5 N. The highest reading was noted for intact teeth followed by FRC + HFP + NHC group and then the CI group, with no significant difference among the 3 groups. The lowest reading was noted for the ETP + MOD group. Maximum unrepairable fractures were seen in the ETP + MOD and CI groups.CONCLUSION:
FRC + HFP + NHC combination and CIs increased the resistance to fracture of ETPs significantly.Palavras-chave
Texto completo:
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Base de dados:
MEDLINE
Assunto principal:
Fraturas dos Dentes
/
Técnica para Retentor Intrarradicular
/
Dente não Vital
Limite:
Humans
Idioma:
En
Ano de publicação:
2023
Tipo de documento:
Article