Abstract | STATEMENT OF PROBLEM: PURPOSE: The purpose of this study was to investigate the fracture resistance and mode of failure of severely compromised teeth restored with 3 different adhesively bonded post and core systems. MATERIAL AND METHODS: Thirty extracted endodontically treated maxillary anterior teeth were randomly divided into 3 groups, CPC, gold cast post and core; TPC, titanium prefabricated post/ composite resin core; and FPC, quartz fiber reinforced post/ composite resin core. All posts were adhesively cemented. All cores resembled a central incisor preparation with no remaining tooth structure above the finish line. Cast gold crowns were fabricated and cemented adhesively. The specimens were aged with thermocycling and cyclic loading. Two specimens per group were randomly selected for micro-computed tomographic imaging before and after aging. Failure was induced with a universal testing machine. The mode of failure was characterized by the interface separation. Data were analyzed with 1-way ANOVA (α=.05) followed by post hoc tests (Bonferroni). RESULTS: A statistically significant difference was found among the 3 groups (P=.002). CPC was significantly different than TPC (P=.008) or FPC (P=.003). The primary mode of failure for CPC and TPC was root fracture, and for FPC post debonding. CONCLUSIONS:
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Authors | Georgios Maroulakos, William W Nagy, Elias D Kontogiorgos |
Journal | The Journal of prosthetic dentistry
(J Prosthet Dent)
Vol. 114
Issue 3
Pg. 390-7
(Sep 2015)
ISSN: 1097-6841 [Electronic] United States |
PMID | 26047799
(Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
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Copyright | Copyright © 2015 Editorial Council for the Journal of Prosthetic Dentistry. Published by Elsevier Inc. All rights reserved. |
Chemical References |
- Composite Resins
- Dental Cements
- Dental Materials
- Gold Alloys
- Resin Cements
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Topics |
- Composite Resins
(chemistry)
- Crowns
- Dental Cements
- Dental Materials
- Dental Prosthesis Design
- Dental Restoration Failure
- Dental Stress Analysis
- Glass
(chemistry)
- Gold Alloys
(chemistry)
- Humans
- Incisor
- Post and Core Technique
- Resin Cements
(chemistry)
- Tooth Fractures
(physiopathology, therapy)
- Tooth Root
(physiopathology)
- Tooth, Nonvital
(physiopathology, therapy)
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