Fracture resistance of endodontically treated teeth restored with glass fiber reinforced posts and cast gold post and cores cemented with three cements.

Abstract

STATEMENT OF PROBLEM:

Dental fractures can occur in endodontically treated teeth restored with glass fiber reinforced posts and cast gold posts.

PURPOSE:

The objective of this study was to record the fracture strength of endodontically treated teeth restored with glass fiber reinforced or cast gold post and cores cemented with 3 cements.

MATERIAL AND METHODS:

Forty-two single-rooted premolars with standardized weakened roots were endodontically treated and allocated to 6 experimental groups (n=7) defined by the 2 factors investigated: post system and cement. Three groups were restored with glass fiber posts and resin-modified glass ionomer cement, dual-polymerizing resin cement, or chemically active autopolymerizing resin cement. The other 3 groups were restored with cast gold post and cores and the same 3 cements. The cores of the glass fiber post groups were fabricated with composite resin core material. Metal crowns were cemented on the cores in the 6 groups. The entire system was subjected to continuous compression in a universal testing machine, and fracture limit and location (cervical third, middle third, or apical third) were noted. Two-way ANOVA and the Scheffé test were used to analyze the data and compare the groups (α=.05).

RESULTS:

Two-way ANOVA showed significant differences in the post type (P<.001) and the cements (P<.001). The interaction between them (P<.001) was statistically significant in the fracture resistance of the endodontically treated teeth. The greatest interaction between post and cement was the glass fiber post with resin-modified glass ionomer cement, followed by the cast gold post and core with resin-modified glass ionomer cement.

CONCLUSIONS:

The use of a glass fiber reinforced post and resin-modified glass ionomer cement increased the fracture resistance of endodontically treated teeth.

• Authors: Carlos Torres-Sánchez, Vanessa Montoya-Salazar, Paola Córdoba, Claudia Vélez, Andrés Guzmán-Duran, José-Luis Gutierrez-Pérez, Daniel Torres-Lagares
• Journal: The Journal of prosthetic dentistry (J Prosthet Dent) Vol. 110 Issue 2 Pg. 127-33 (Aug 2013) ISSN: 1097-6841 [Electronic] United States
• PMID: 23929374 (Publication Type: Journal Article)
• Copyright: Copyright © 2013 The Editorial Council of the Journal of Prosthetic Dentistry. Published by Mosby, Inc. All rights reserved.

Chemical References

• Composite Resins
• Dental Cements
• Dental Materials
• Glass Ionomer Cements
• Gold Alloys
• Resin Cements
• fiberglass

Topics

• Bicuspid (pathology)
• Cementation (methods)
• Composite Resins (chemistry)
• Crowns
• Dental Cements (chemistry)
• Dental Materials (chemistry)
• Dental Prosthesis Design
• Dental Stress Analysis (instrumentation)
• Glass (chemistry)
• Glass Ionomer Cements (chemistry)
• Gold Alloys (chemistry)
• Humans
• Materials Testing
• Pilot Projects
• Post and Core Technique (instrumentation)
• Resin Cements (chemistry)
• Self-Curing of Dental Resins
• Stress, Mechanical
• Tooth Apex (injuries)
• Tooth Cervix (injuries)
• Tooth Fractures (physiopathology)
• Tooth Root (injuries)
• Tooth, Nonvital (therapy)