학술논문
Fracture strength and ribbond fibers: In vitro analysis of mod restorations.
Document Type
Academic Journal
Author
Zotti F; Researcher, Department of Surgical Sciences, Paediatrics and Gynecology, University of Verona, 37134 Verona, Italy (IT).; Hu J; M.D., Private Practice, 37134, Verona, Italy.; Zangani A; PhD Student, Department of Surgical Sciences, Paediatrics and Gynecology, University of Verona, 37134 Verona, Italy (IT).; Albanese M; Full professor, Department of Surgical Sciences, Paediatrics and Gynecology, University of Verona, 37134 Verona, Italy (IT).; Paganelli C; Full professor, Department of Medical and Surgical Specialties, Radiological Sciences and Public Health, Dental School, University of Brescia, Brescia, Italy.
Source
Publisher: Medicina Oral Country of Publication: Spain NLM ID: 101603132 Publication Model: eCollection Cited Medium: Print ISSN: 1989-5488 (Print) Linking ISSN: 19895488 NLM ISO Abbreviation: J Clin Exp Dent Subsets: PubMed not MEDLINE
Subject
Language
English
ISSN
1989-5488
Abstract
Background: Ribbond fibers are supposed to be a reinforcing material in restoration of compromised teeth. This study aims to compare MOD restorations with and without Ribbond Fiber in terms of fracture strength under axial loading; to identify the minimum depth of MOD cavities to use Ribbond Fiber (to improve the fracture strength under axial load.
Material and Methods: 20 upper and lower molars extracted intact were used for the experiment. The teeth were prepared with 2 types of cavities and then divided into 4 groups: 1) 5 mm deep MOD cavities with residual interaxial dentin restored without Ribbond; 2) 5 mm deep MOD cavities with residual interaxial dentin restored with Ribbond; 3) 5 mm deep MOD cavities without residual interaxial dentin, restored without Ribbond; 4) 5 mm deep MOD cavities without residual interaxial dentin restored with Ribbond. The restored teeth were then subjected to thermal cycling and their fracture strength was evaluated using an Instron device. The Mann-Whitney statistical test was used to compare fracture strength among groups. Finally, a descriptive analysis of the verified fractures was performed.
Results: There was a statistically significant difference between groups 1 and 2 ( P = 0.0090) in the loading force required for a fracture. In contrast, there was no statistically significant difference between groups 3 and 4 ( P = 0.7540). Groups 1 and 2 had the fewest non-restorable fractures, in contrast to groups 3 and 4.
Conclusions: Ribbond fiber application in MOD cavities seems to be more effective in terms of strengthening where cavities have interaxial dentinal tissue. Key words: Ribbond fibers, fracture strenght, direct dental restorations.
Competing Interests: Conflicts of interest The authors do not have any financial interest in the companies whose materials are included in this article. Nothing to declare.
(Copyright: © 2023 Medicina Oral S.L.)
Material and Methods: 20 upper and lower molars extracted intact were used for the experiment. The teeth were prepared with 2 types of cavities and then divided into 4 groups: 1) 5 mm deep MOD cavities with residual interaxial dentin restored without Ribbond; 2) 5 mm deep MOD cavities with residual interaxial dentin restored with Ribbond; 3) 5 mm deep MOD cavities without residual interaxial dentin, restored without Ribbond; 4) 5 mm deep MOD cavities without residual interaxial dentin restored with Ribbond. The restored teeth were then subjected to thermal cycling and their fracture strength was evaluated using an Instron device. The Mann-Whitney statistical test was used to compare fracture strength among groups. Finally, a descriptive analysis of the verified fractures was performed.
Results: There was a statistically significant difference between groups 1 and 2 ( P = 0.0090) in the loading force required for a fracture. In contrast, there was no statistically significant difference between groups 3 and 4 ( P = 0.7540). Groups 1 and 2 had the fewest non-restorable fractures, in contrast to groups 3 and 4.
Conclusions: Ribbond fiber application in MOD cavities seems to be more effective in terms of strengthening where cavities have interaxial dentinal tissue. Key words: Ribbond fibers, fracture strenght, direct dental restorations.
Competing Interests: Conflicts of interest The authors do not have any financial interest in the companies whose materials are included in this article. Nothing to declare.
(Copyright: © 2023 Medicina Oral S.L.)