Fracture Resistance of Composite Veneers with Different Preparation Designs

Zlatanovska, Katerina and Guguvcevski, Ljuben and Popovski, Risto and Dimova, Cena and Minovska, Ana and Mijoska, Aneta (2016) Fracture Resistance of Composite Veneers with Different Preparation Designs. Balkan Journal of Dental Medicine, 20 (2). pp. 99-103. ISSN 2335-0245


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Background: The aim of this in vitro study was to examine the fracture load of composite veneers using three different preparation designs. Material and methods: Fifteen extracted, intact, human maxillary central incisors were selected. Teeth were divided into three groups with different preparation design: 1) feather preparation, 2) bevel preparation, and 3) incisal overlap- palatal chamfer. Teeth were restored with composite veneers, and the specimens were loaded to failure. The localization of the fracture was recorded as incisal, gingival or combined. Results: Composite veneers with incisal overlap – palatal chamfer showed higher fracture resistance compared to feather preparation and bevel preparation. The mean (SD) fracture loads were: Group 1: 100.6±8.0 N, Group 2: 107.4±6.8 N, and Group 3: 122.0±8.8 N. The most common mode of failure was debonding for veneers with feather preparation and fracture when incisal edge is reduced. The most frequent localization of fracture was incisal. Conclusion: The type of preparation has a significant effect on fracture load for composite veneers. This study indicates that using an incisal overlap– palatal chamfer preparation design significantly increases the fracture resistance compared to feather and bevel preparation designs. Key words: composite veneers, preparation design, fracture resistance

Item Type: Article
Subjects: Medical and Health Sciences > Other medical sciences
Divisions: Faculty of Medical Science
Depositing User: Katerina Zlatanovska
Date Deposited: 28 Sep 2016 13:02
Last Modified: 28 Sep 2016 13:02

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