Fracture resistance of various laminate veneer materials: systematic literature review

Bondzinskaitė, Rugilė; Venskutė, Greta; Kriaučiūnas, Albertas

doi:10.5114/ps/144897

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“…Fracture resistance should be considered in the selection of ceramic veneering material, especially in the posterior teeth, to achieve proper stress distribution during mastication, which affects the durability of the restoration (11,18) . Furthermore, the ceramic veneer thickness and the tooth preparation depth play a significant role in the fracture resistance and the clinical performance of laminate veneer restorations (18) . Consequently, the aim of this study was to compare the fracture resistance of two CAD/CAM monolithic ceramic veneers with and without dental preparation.…”

Section: Introductionmentioning

confidence: 99%

Effect of preparation depth on the fracture resistance of two monolithic ceramic laminate veneers

Mohamed

2022

Egyptian Dental Journal

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Aim: This study aims to measure and compare the fracture resistance of two CAD/CAM monolithic ceramic veneers with and without dental preparation.Materials and methods: Twenty-eight extracted mandibular premolars were selected and randomly assigned into four groups (n = 7): Group NP/ED = No preparation with 0.3 mm thick ceramic veneer (IPS e.max CAD); Group P3/ED = Tooth preparation with 0.3 mm depth and 0.3 mm ceramic veneer (IPS e.max CAD); Group NP/TT = No preparation with 0.3 mm thick ceramic veneer (Top translucent zirconia, Upcera); and Group P3/TT= Tooth preparation of 0.3 mm and 0.3 mm ceramic veneer (Top translucent zirconia, Upcera). In all groups, the veneers extended 1 mm to the occlusal surface of the buccal cusp. All the preparations were digitally scanned, and the veneers were milled using CAD/CAM milling machine. After surface treatment and cementation of veneers, all groups were thermocycled (2000 cycles, 5°C-55°C) and subjected to fracture resistance test under the occlusal compressive load at cross-head speed 0.5 mm/min. The failure mode analysis was inspected at X 25 maginifications. Data were statistically analyzed with one-way analysis of variance (ANOVA), followed by post-hoc test for pairwise comparison of the groups, Differences were considered significant at P<0.05. Results:The mean fracture resistance (M±SD) was 436.71± 63.68 in NP/ED, 561.43±88.21 in P3/ED, 458.57±46.70 in NP/TT, 582.86±66.51 in P3/TT. There were significant differences in the mean values of fracture resistance between the groups (P ≤ 0.001). NP (no preparation) showed mean fracture resistance values significantly lower than P3 (0.3 dental preparation depth) groups irrespective to the ceramic veneering material type. However, ED veneers showed non-significant differences mean fracture resistance values lower than TT veneers irrespective to the preparation depth. Cohesive failure mode (laminate fracture) was predominant in P3/ED group. While mixed failure was common in NP/ED group. On the other hand, in both NP/TT and P3/TT (translucent zirconia veneer groups), showed more adhesive failure. Root fracture is uncommon in all groups.Conclusions: Preparation within the enamel is necessary to increase the fracture resistance of the veneered premolars. The type of ceramic material had an impact on the failure mode of laminate veneers.

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Section: Introductionmentioning

confidence: 99%

Effect of preparation depth on the fracture resistance of two monolithic ceramic laminate veneers

Mohamed

2022

Egyptian Dental Journal

View full text Add to dashboard Cite

show abstract

Fracture resistance of various laminate veneer materials: systematic literature review

Cited by 1 publication

References 0 publications

Effect of preparation depth on the fracture resistance of two monolithic ceramic laminate veneers

Effect of preparation depth on the fracture resistance of two monolithic ceramic laminate veneers

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