Fracture resistance and marginal discrepancy of porcelain laminate veneers influenced by preparation design and restorative material in vitro

Lin, Tai-Min; Liu, Perng‐Ru; Ramp, Lance C.; Essig, Milton E.; Givan, Daniel A.; Pan, Yu‐Hwa

doi:10.1016/j.jdent.2011.12.008

Cited by 71 publications

(61 citation statements)

References 38 publications

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“…The acceptable clinical marginal opening is between 40 and 120 um [14,15] . There was no significant difference found between the three ceramic types before and after aging which is similar to findings of other studies [16,17] . After the artificially accelerated aging, IPS e.max® and IP Empress® demonstrated a significant increase in the marginal gap compared to the pre-aging values.…”

Section: Discussionsupporting

confidence: 91%

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Effect of artificially accelerated aging on margin fit and color stability of laminate veneers

Hamza¹,

Al-Baili²,

Abdel‐Aziz³

2018

SDS

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Aim: The purpose of the study was to evaluate the effect of artificially accelerated aging on marginal fit and color stability of three CAD/CAM materials used to fabricate laminate veneers. Methods:A typodont maxillary central incisor tooth was prepared to receive a ceramic veneer, then duplicated to create 15 epoxy resin teeth equally divided into three groups according to the ceramic used to fabricate laminate veneers. Three groups were established: Group (N) nano-hybrid ceramic (Lava™ Ultimate; 3M ESPE); Group (L) CAD/CAM lithium disilicate glass ceramic block (IPS e.max ® CAD; Ivoclar Vivadent); and Group (F) leucite-reinforced glass ceramic block (IPS Empress ® CAD; Ivoclar Vivadent). All of the specimens were subjected to artificial aging using a weathering process in a Weather-O-meter for 300 h. Margin fit and color measurements were carried out before and after artificial aging of the laminates. Results:The results for the marginal fit revealed that there was no statistically significant difference between the mean marginal gap distance of the aged and non-aged specimens in the nano-hybrid ceramic. However, lithium disilicate glass ceramic and leucite-reinforced glass ceramic blocks showed a statistically significant change in the marginal gap. For color measurement, Lava™ Ultimate demonstrated a significant decrease in (a*) value while the (L*) and (b*) values did not show a statistically significant change. Conclusion:Within the limitation of this study, it can be concluded that aging the nano-hybrid ceramic had a superior marginal fit and inferior color stability.

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Section: Discussionsupporting

confidence: 91%

“…Lin et al [16] compared the marginal gap between different types of ceramic veneers; leucite-reinforced ceramic and conventional sintered feldspathic porcelain. They found that no statistically significant difference was found between the ceramic types.…”

Section: Introductionmentioning

confidence: 99%

Effect of artificially accelerated aging on margin fit and color stability of laminate veneers

Hamza¹,

Al-Baili²,

Abdel‐Aziz³

2018

SDS

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“…Improvements in the coefficient of thermal expansion and in the size and distribution of particles have led to abrasive ceramic restorations that are more resistant to fracture, giving an improved prognosis and making the ceramic dental restorative material superior to composite resin [29]. …”

Section: Discussionmentioning

confidence: 99%

Minimally Invasive Laminate Veneers: Clinical Aspects in Treatment Planning and Cementation Procedures

Morita

Hayashida

Pupo

et al. 2016

Case Reports in Dentistry

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When a definitive aesthetic treatment is determined, it is crucial to grant the patient's wish with the necessary dental treatment. Thus, conservative treatments that are the solution to aesthetic problems involving morphologic modifications and provide the result that the patient expects should always be the first therapeutic option. In this context, ceramic laminate veneers, also known as “contact lens,” are capable of providing an extremely faithful reproduction of the natural teeth with great color stability and periodontal biocompatibility. Minimal or no preparation veneers are heavily advertised as the answer to our patients' cosmetic needs, which they can be if they are used correctly in the appropriate case. This report is about ultraconservative restorations to achieve functional and aesthetic rehabilitation through treatment planning. Thus, clinicians should be aware that the preparation for laminate veneers remains within enamel, to ensure the bond strength and avoid or minimize the occurrence of postoperative sensitivity.

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“…The marginal fit of prosthetic crowns is a vital factor for success because the cement is a weak agent in the restorative process (Lin et al 2012). When the cement dissolution occurs, a gap is established between the dentin and the crown (Jacobs & Windeler 1991).…”

Section: Introductionmentioning

confidence: 99%

Micro-CT analysis of in-office computer-aided designed/computer-aided manufactured dental restorations

Carneiro

Prado

Prudente

et al. 2016

Computer Methods in Biomechanics and Biomedical Engineering: Im

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a department of occlusion, Fixed prostheses and dental materials, Federal university of uberlândia, uberlândia, Brazil; b department of Biologic and materials sciences, division of prosthodontics, school of dentistry, university of michigan, ann arbor, mi, usa; c school of dentistry, university of illinois at Chicago, Chicago, il, usa; d department of operative dentistry and dental materials, Federal university of uberlândia, uberlândia, Brazil ABSTRACT Purpose: The current study evaluated two different materials, using micro-CT to compare the marginal gap of feldspathic ceramic (V) and resin nano-ceramic (L) crowns obtained by two different computeraided design/computer-aided manufacturing (CAD/CAM) systems, CEREC CAD/CAM system and E4D Technologies. Methods: A human lower left first premolar was mounted on a typodont model and prepared for an all-ceramic crown. Two groups (n = 5) were divided based on the system for obtaining the crowns and the material used for it (V and L). Micro-CT images were obtained for marginal gap measurements of each crown, and the data were statistically analysed by one-way analysis of variance followed by Tukey's post hoc test for pairwise comparisons (α ¼ 0.05). Results: There were no statistically significant differences between marginal gap of groups V and L (p = 0.473). The mean and standard deviation for the vertical misfit was V = 62.6 (65.2) and L = 66.5 (59.0). For the horizontal misfit, the values were divided into three groups: underextension (L = 20.8%) and (V = 54.6%), equally extended (L = 16.9%) and (V = 36.9%) and overextension (L = 62.3%) and (V = 8.5%). Conclusion: The results revealed no difference in the marginal fit of crowns produced by different materials and different chairside CAD/CAM systems. Both are considered clinically acceptable according to all cited classifications. ARTICLE HISTORY

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Fracture resistance and marginal discrepancy of porcelain laminate veneers influenced by preparation design and restorative material in vitro

Cited by 71 publications

References 38 publications

Effect of artificially accelerated aging on margin fit and color stability of laminate veneers

Effect of artificially accelerated aging on margin fit and color stability of laminate veneers

Minimally Invasive Laminate Veneers: Clinical Aspects in Treatment Planning and Cementation Procedures

Micro-CT analysis of in-office computer-aided designed/computer-aided manufactured dental restorations

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