The Light Reflection Changes of Monolithic Zirconia and Lithium Disilicate after Using Two External Staining Kits following by Thermocycling.

Background: The purpose of the study was to evaluate the changes of light reflection% on two materials (monolithic zirconia and lithium disilicate) after using two external staining kits following by thermocycling.

Methods: Specimens were sectioned from monolithic zirconia (n = 60) and lithium disilicate ( = 60) then divided into six groups ( = 20). Two different types of external staining kits were used and applied to the specimens.

Effect of Denture Base Fabrication Technique on Adhesion In Vitro.

Denture stomatitis is a common manifestation of oral candidiasis affecting some 65% of denture wearers. This condition is initiated by the adherence of to denture base acrylic resin. The present study aimed to test the in vitro effect of traditional and novel fabrication methods on adhesion to denture base samples.

The Effect of Aging on the Roughness and Bacterial Adhesion of Lithium Disilicate and Zirconia Ceramics.

Purpose: This in vitro study was designed to compare bacterial adhesion to zirconia versus lithium disilicate crowns after artificial aging.

Materials And Methods: Seventy-five discs were tested in this study: 25 Cr-Co base metal discs (control), 25 zirconia discs, and 25 lithium disilicate discs. Each sample was polished and glazed appropriately.

An in vitro evaluation of marginal fit zirconia crowns fabricated by a CAD-CAM dental laboratory and a milling center.

Background: Marginal fit is critical for the success and longevity of a dental restoration. Zirconia crowns can be fabricated either chair-side, in a dental laboratory or in a milling center; each can give different marginal fits results. However, discussion of the marginal fit of zirconia crowns when different fabrication methods are compared is lacking in the literature.

Comparison of marginal fit between CAD-CAM and hot-press lithium disilicate crowns.

Statement Of Problem: Hot-pressing and computer-aided design and computer-aided manufacturing (CAD-CAM) are major techniques for the fabrication of lithium disilicate crowns. They exhibit different accuracies regarding marginal fit, an important factor in restoration survival. However, studies comparing the marginal fit of different fabrication methods are lacking.