• Title/Summary/Keyword: porcelain laminate veneer

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THE EFFECT OF THE AMOUNT OF INTERDENTAL SPACING ON THE STRESS DISTRIBUTION IN MAXILLARY CENTRAL INCISORS RESTORED WITH PORCELAIN LAMINATE VENEER AND COMPOSITE RESIN: A 3D-FINITE ELEMENT ANALYSIS (도재 라미네이트와 복합레진 수복 시 치간이개 양에 따른 접착계면의 응력분포에 관한 3차원 유한요소법적 연구)

  • Hong, Jun-Bae;Tak, Seung-Min;Baek, Seung-Ho;Cho, Byeong-Hoon
    • Restorative Dentistry and Endodontics
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    • v.35 no.1
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    • pp.30-39
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    • 2010

  • This study evaluated the influence of the type of restoration and the amount of interdental spacing on the stress distribution in maxillary central incisors restored by means of porcelain laminate veneers and direct composite resin restorations. Three-dimensional finite element models were fabricated to represent different types of restorations. Four clinical situations were considered. Type I, closing diastema using composite resin. Labial border of composite resin was extended just enough to cover the interdental space; Type II, closing diastema using composite resin without reduction of labial surface. Labial border of composite resin was extended distally to cover the half of the total labial surface; Type III, closing diastema using composite resin with reduction of labial surface. Labial border of the preparation and restored composite resin was extended distally two-thirds of the total labial surface; Type IV, closing diastema using porcelain laminate veneer with a feathered-edge preparation technique. Four different interdental spaces (1.0, 2.0. 3.0, 4.0 mm) were applied for each type of restorations. For all types of restoration, adding the width of free extension of the porcelain laminate veneer and composite resin increased the stress occurred at the bonding layer. The maximum stress values observed at the bonding layer of Type IV were higher than that of Type I, II and III. However, the increasing rate of maximum stress value of Type IV was lower than that of Type I, II and III.

  • https://doi.org/10.5395/JKACD.2010.35.1.030 인용 PDF KSCI

TETRACYCLINE에 의한 변색치의 심미적 치료

  • Hwang, Byeong-Gak;Lee, Cheol-Won;Kim, Seok-Gyun
    • Journal of the Korean Academy of Esthetic Dentistry
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    • v.1 no.1
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    • pp.50-57
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    • 1992

  • Intrinsic discoloration of permanent anterior teeth is a continuing esthetic problem. Tetracycline ingested during amelogenesis has long been recognized as predisposing factor in intrinsic staining. Methods for restoring original tooth color have included (1) complete PFM crown coverage (2) porcelain laminate veneers (3) direct bonding of composite resin, and (4) bleaching. In the case of tetracycline-stained upper anterior teeth, We authors, obtained the satisfactory results by means of gingivectomy, preliminary bleaching and porcelain laminate veneer restoration.

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