Cemented implant restoration: A technique for minimizing adverse biologic consequences.

The purpose of this technique was to eliminate excess cement from the implant restoration by using a 2-step cementation process. A custom acrylic resin abutment, a duplicate of the titanium abutment, is fabricated before the restoration is cemented. At cementation, cement is placed inside the restoration, which is placed onto the acrylic resin abutment outside the mouth.

Influence of ceramic thickness and ceramic materials on fracture resistance of posterior partial coverage restorations.

This study evaluated the influence of ceramic thickness and ceramic materials on fracture resistance of posterior partial coverage ceramic restorations. Forty extracted molars were allocated into four groups (n=10) to test for two variables: 1) the thickness of ceramic (1 mm or 2 mm) and 2) the ceramic materials (a lithium disilicate glass-ceramic [IPS e.max] or leucite-reinforced glass ceramic [IPS Empress]).

Occlusal errors generated at the maxillary incisal edge position related to discrepancies in the arbitrary horizontal axis location and to the thickness of the interocclusal record.

Statement Of Problem: Determining the arbitrary transverse horizontal axis by using anatomic landmarks is a simpler clinical procedure than locating the kinematic transverse horizontal axis; however, accuracy may vary depending on individual patient anatomy.

Purpose: The purpose of this study was to investigate an arbitrary transverse horizontal axis relative to the maxillary incisal edge and to examine the magnitude of occlusal error produced when this arbitrary transverse horizontal axis is used to mount casts in an articulator.

Material And Methods: Seventy-three adults (43 men, 30 women) participated in this study.

Reconsidering remineralization strategies to include nanoparticle hydroxyapatite.

Dental caries is a transmissible biofilm-mediated disease of the teeth that is defined by prolonged periods of low pH resulting in net mineral loss from the teeth. Hydroxyapatite, fluorapatite, and the carbonated forms of calcium phosphate form the main mineral content of dental hard tissues: enamel, dentin, and cementum. Active dental caries results when the biofilm pH on the tooth surface drops below the dissolution threshold for hydroxyapatite and fluorapatite.

Effects of cyclic fatigue stress-biocorrosion on noncarious cervical lesions.

Problem: Although there is a high prevalence of noncarious cervical lesions (NCCLs), the etiology of these lesions remains contentious.

Purpose: To evaluate the combined effects of cyclic fatigue stress and biocorrosion activity on NCCLs.

Materials And Methods: Extracted premolar teeth were allocated into four groups (N = 10).