Influence of Different Preparation Designs on Fracture Strength of Porcelain Laminate Veneer

Gupta, Neha; Nagada, Suhasini; Paliwal, Jyoti; Goyal, Dhawal; Agarwal, Manoj K.; Khatri, Rohit Kumar; Mittal, Sankalp

doi:10.37821/ruhsjhs.3.2.2018.88-93

Cited by 2 publications

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“…An autopolymerized acrylic resin material was used as a base to fix each metal die 1 mm apical to the CEJ to simulate the natural biologic width and the base was held in a metallic mold (Chai et al, 2020 ; Gupta et al, 2018 ; Tomer et al, 2018 ).…”

Section: Methodsmentioning

confidence: 99%

Thickness and yttria percentage influences the fracture resistance of laminate veneer zirconia restorations

Malallah

Hasan

2022

Clinical & Exp Dental Res

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Objectives Mechanical properties are cardinal for the long‐term clinical success of laminate veneer restorations but the selection of new restorative materials should ideally be based on clinical evidence, therefore, in vitro testing of dental materials is a good alternative to evaluate their properties and understand their behavior so this study aimed to compare and evaluate the effect of two different thicknesses and yttria percentage on the fracture resistance of laminate veneer zirconia restorations. Materials and Methods Forty laminate veneer restoration prepared from partial sintering zirconia of 3Y (yttria), 5Y (yttria), combined 3Y&5Y (yttria), and lithium disilicate. Specimens were assigned into four main groups according to their percentage of yttria content (n = 10) and subgrouped into two thicknesses (0.5 mm thickness and 0.3 mm thickness) (n = 5) as follows: Group I, II, III, and IV (Group I for lithium disilicate (control), Group II for 3Y zirconia, Group III for 5Y zirconia, and Group IV for combined 3Y&5Y zirconia), each of them subdivided according to their thickness into two subgroups (n = 5 for each one) and resistance to fracture for each restoration was evaluated using a universal testing machine. Data were analyzed using a one‐way analysis of variance and Duncan's tests at a 5% level of significance. Results The thickness of laminate veneer restoration significantly affects the fracture resistance value of all type of laminate veneers restorations (fracture resistance mean value was highest for 0.5 mm thickness and lower for 0.3 mm thickness restorations) and yttria percentage significantly affect fracture resistance value of zirconia laminate veneer restorations (fracture resistance mean value was highest for 0.5 mm thickness of 3Y zirconia [865 N] and combined 3Y&5Y zirconia [846 N]). Conclusions Reducing the thickness of laminate zirconia veneer restorations to 0.3 mm reduces its fracture resistance and increasing yttria percentage had an adverse effect on fracture resistance of zirconia laminate veneer restorations.

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Section: Methodsmentioning

confidence: 99%

Thickness and yttria percentage influences the fracture resistance of laminate veneer zirconia restorations

Malallah

Hasan

2022

Clinical & Exp Dental Res

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“…On the other hand, gupta 13 etal in 2018 had reported the fracture strength of e-max press laminate veneer of different designs. It ranged from 920 N to 1503 N. This variation in results could be attributed to difference in the designs.…”

Section: Shimaa Elmetwally Sabermentioning

confidence: 99%

Fracture Strength of Two Different Designs of Laminate Veneer (Bilaminar and V-shape) with Two Types of Ceramic (In Vitro Study)

2020

Mansoura Journal of Dentistry

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Influence of Different Preparation Designs on Fracture Strength of Porcelain Laminate Veneer

Cited by 2 publications

References 0 publications

Thickness and yttria percentage influences the fracture resistance of laminate veneer zirconia restorations

Thickness and yttria percentage influences the fracture resistance of laminate veneer zirconia restorations

Fracture Strength of Two Different Designs of Laminate Veneer (Bilaminar and V-shape) with Two Types of Ceramic (In Vitro Study)

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