Crack propensity of porcelain laminate veneers: A simulated operatory evaluation

Magne, Pascal; Kwon, Kung‐Rock; Belser, Urs C.; Hodges, James S.; Douglas, William H.

doi:10.1016/s0022-3913(99)70277-5

Cited by 107 publications

(81 citation statements)

References 15 publications

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“…Furthermore, water sorption could also decrease adhesive strength, as improper infiltration of the collagen network by the adhesive resin would result in hydrolytical degradation and decrease resin-resin adhesion [36]. Most failures of ceramic laminate veneers were observed at the adhesive interface of the substrate where the highest tensile forces are observed [37]. Due to placement of the load cell at the incisal area, stress concentration was concentrated at the interface but when adhesive strength is sufficient, the failure occurs cohesive in the ceramic itself.…”

Section: Discussionmentioning

confidence: 99%

Effect of immediate and delayed dentin sealing on the fracture strength, failure type and Weilbull characteristics of lithiumdisilicate laminate veneers

et al. 2016

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OBJECTIVES Adhesion on dentin is less reliable than on enamel, which could affect the durability of laminate veneers (LV). Immediate dentin sealing (IDS) is suggested instead of delayed dentin sealing (DDS) to overcome hypersensitivity and prevent debonding from dentin. This study evaluated the effect of IDS and DDS on the durability of Li2Si2O5 laminate veneers in vitro. METHODS Window preparations were made on the labial surfaces of sound maxillary central incisors (N=50). They were randomly divided into five groups: Group 1: Enamel only+H3PO4+Adhesive (control); Group 2: <1/4 dentin+H3PO4+DDS (2 weeks later); Group 3: Complete dentin+H3PO4+DDS (2 weeks later); Group 4: <1/4 dentin+H3PO4+IDS; Group 5: Complete dentin+H3PO4+IDS. Li2Si2O5 laminate veneers (e.max Press) were bonded to the labial surfaces of the teeth with adhesive resin cement (Variolink Veneer). IDS layers were silicacoated (CoJet System) and silanized (ESPE-Sil). The teeth with their bonded laminates were thermocycled (10.000× cycles) and then subjected to static loading (1mm/min). Failure type and location after debonding were classified. Data were analyzed using ANOVA and Tukey's post hoc test ( =0.05). Two-parameter Weibull distribution values including the Weibull modulus, scale (m) and shape (0), values were calculated. RESULTS Mean fracture strength (N) per group in descending order was as follows: Group 5 (576±254), Group 4 (478±216), Group 1 (473±159), Group 2 (465±186), and Group 3 (314±137). The presence of complete dentin exposure sealed with DDS after 2 weeks on the bonded surface (Group 3) resulted in significantly lower fracture strength results than those in group 5 with IDS (p=0.034). Weibull distribution presented higher shape (0) for Group 1 (3.67), than those of other groups (2.51-2.89). Failure types were predominantly adhesive failure between the cement and the laminate veneer in Groups 1, 2, 4 whereas Group 3 presented more often complete adhesive failures between the cement and dentin. In Group 5, failures showed some IDS and cement with or without ceramic fracture attached on the tooth. SIGNIFICANCE When laminate veneers are bonded to a large dentin substrate, application of immediate dentin sealing improves adhesion and thereby, the fracture strength of Li2Si2O5 laminate veneers. Gresnigt, Marco M M; Cune, Marco S; de Roos, Joanne G; Özcan, Mutlu (2016) ABSTRACTObjectives. Adhesion on dentin is less reliable than on enamel, which could affect

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Section: Discussionmentioning

confidence: 99%

Effect of immediate and delayed dentin sealing on the fracture strength, failure type and Weilbull characteristics of lithiumdisilicate laminate veneers

et al. 2016

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“…Retrospective studies may offer a reliable observation of the clinical behavior of the materials and techniques. On the other hand, there are numerous in vitro studies on veneers (14)(15)(16). However, such studies do not offer the same prognostic value and long-term predictability of the treatment as that of in vivo studies.…”

Section: Discussionmentioning

confidence: 99%

“…This relatively low survival rate for our functional design restorations in comparison with other studies (2,3), may be justified due to the design of the dental preparation that we used (extension of the restoration to the back side of the tooth, leaving a fine bevel). For this reason, and due to in vitro studies (14)(15)(16) Other authors (6,9) show less favorable results, likely related to incorrect cement application techniques. In the majority of the clinical studies on this type of restoration, the degree of patient satisfaction has been a factor taken into account.…”

Section: Analysis Of Mechanical Accidentsmentioning

confidence: 99%

A clinical longitudinal study 323 porcelain laminate veneers. Period of study from 3 to 11 years

Granell-Ruíz

Fons-Font²,

Labaig-Rueda³

et al. 2010

Med Oral

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Objective: The objective of this study was to evaluate the clinical results of 323 porcelain laminate veneers over a period of 3 to 11 years. Material and Methods: This study included 70 patients, aged between 18 and 74 years. Of the 323 total veneers, 124 were of a simple design and 199 were of a functional design. The condition of the soft tissues and hygiene, in addition to the condition of the abutment teeth, the restorations and patient satisfaction were all clinically examined. In carrying out the statistical analysis, a descriptive approach was taken in analyzing the data. The Kaplan Meier method was used for statistically analyzing the survival rates of the porcelain laminate veneers. Results: Analysis of the soft tissue revealed marginal recession in 7.7% of the cases, and in 21.6% of the cases, bleeding was detected on probing. Analysis of the condition of the abutment teeth revealed secondary caries and hypersensitivity in 3.1% of the cases, and changes in pulp vitality were observed in 2.8% of the cases. In studying the condition of the restorations, marginal integrity was observed to be excellent in 98% of the cases, slight marginal pigmentation was present in 39.3% of the cases, fractures were present in 4% of the cases and decementation in 9% of the cases. The degree of patient satisfaction was considered to be excellent in 97.1% of the cases. Conclusions: Porcelain laminate veneers are a predicable treatment option that offer excellent results.

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“…21 A thick composite lute may occur as a result of a poorly fitting veneer or the use of copious die spacer in an attempt to mask underlying tooth discolouration. Least cracking was seen with a ceramic and luting composite thickness ratio above 3.…”

Section: Historymentioning

confidence: 99%

Crowns and other extra-coronal restorations: Porcelain laminate veneers

2002

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Porcelain veneers are resin-bonded to the underlying tooth and provide a conservative method of improving appearance or modifying contour, without resorting to a full coverage crown. The porcelain laminate veneer is now a frequently prescribed restoration for anterior teeth. The sums spent by the Dental Practice Board on this type of treatment increased from quarter of a million pounds in 1988/89 to over seven million in 1994/95, 1 representing some 113,582 treatments. Since that time the number has stabilised at over 100,000 veneers prescribed each year. 2 The objective of this paper is to give a practical guide on providing these restorations.

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Crack propensity of porcelain laminate veneers: A simulated operatory evaluation

Cited by 107 publications

References 15 publications

Effect of immediate and delayed dentin sealing on the fracture strength, failure type and Weilbull characteristics of lithiumdisilicate laminate veneers

Effect of immediate and delayed dentin sealing on the fracture strength, failure type and Weilbull characteristics of lithiumdisilicate laminate veneers

A clinical longitudinal study 323 porcelain laminate veneers. Period of study from 3 to 11 years

Crowns and other extra-coronal restorations: Porcelain laminate veneers

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