PURPOSE To compare the fracture resistance before and after cyclic fatigue assays of ceramic crowns with customized zirconia abutments when screw retained and cemented onto implants. MATERIALS AND METHODS The sample of this study consisted of 40 ceramic crowns with zirconia infrastructure fixed onto external hexagonal implants. The crowns were distributed into two groups (n = 20): Screw-retai...

statement of the problem: porcelain laminate veneer is an esthetic restoration used as an alternative to full veneer crowns and requires minimal tooth preparation. in restoration with porcelain laminate veneers, both the longevity of the laminate and conservation of the sound tooth structure are imperative. purpose: the present study aimed to investigate the shear bond strength of porcelain lam...

Color is one of the integral parts of esthetic dentistry that affects the satisfaction of patients with their restorations. Because of the complexity of the optical properties of the natural teeth, color reproduction is one of the most challenging issues which the clinicians encounter with [1] Ceramic restorations are applicable in situations with high esthetic demands. They can mimic the appea...

The performance of veneer joints is known to affect the quality of laminated veneer lumber (LVL), so experimental research and simulation analysis of the tensile properties of lap joints were performed and reported in this paper. The lap length, specimen thickness, and specimen width were selected as the experimental factors. The maximum tensile load increased with the increase of each factor; ...

Improving the bond strength of veneering ceramics to ZrO2-based cores remains a challenge. The purpose this study was evaluate shear different ZrO2 containing calcium silicate (CaSi) ceramics. Five types (n = 230) were divided into two groups: with or without oxygen plasma treatment. These bound (IPS e.max Ceram VITA VM9). Shear various measured 10), in addition phase composition, surface morph...

ceramic on light transmission of light-emitting diode (LED) and quartz-tungsten-halogen units (QTH) were evaluated. Ceramic IPS e.max CAD shades A1, A2, A3, A3.5, high (HT) and low (LT) translucency were cut (1, 2, 3, 4 and 5 mm). Light sources emission spectra were determined. Light intensity incident and transmitted through each ceramic sample was measured to determine light transmission perc...

The purpose of this article is to identify the incidence of complications and the most common complications associated with single crowns, fixed partial dentures, all-ceramic crowns, resin-bonded prostheses, and posts and cores. A Medline and an extensive hand search were performed on English-language publications covering the last 50 years. The searches focused on publications that contained c...

PURPOSE The most common failure seen in restorations with a zirconia core is total or layered delamination of the ceramic veneer. In the present study, the shear bond strengths between veneering ceramics and colored zirconia oxide core materials were evaluated. MATERIALS AND METHODS Zirconia discs (15 × 12 × 1.6 mm) were divided into 11 groups of 12 discs each. Groups were colored according t...