Axial displacement of external and internal implant-abutment connection evaluated by linear mixed model analysis.

Purpose: To analyze the axial displacement of external and internal implant-abutment connection after cyclic loading.

Materials And Methods: Three groups of external abutments (Ext group), an internal tapered one-piece-type abutment (Int-1 group), and an internal tapered two-piece-type abutment (Int-2 group) were prepared. Cyclic loading was applied to implant-abutment assemblies at 150 N with a frequency of 3 Hz.

Surface alterations of several dental materials by a novel ultrasonic scaler tip.

Purpose: To assess the effects of a recently developed ultrasonic scaler tip, composed mainly of copper, on the surfaces of several dental materials.

Materials And Methods: Representative samples of dental materials, including titanium, type II gold, cobalt-chromium alloy, zirconia, and porcelain, were prepared. Three ultrasonic scaler tips of conventional metal (CM), carbon composite (CC), and copper alloy (CA) were prepared.

Full mouth rehabilitation of partially and fully edentulous patient with crown lengthening procedure: a case report.

Background: In order to restore severely attrited teeth properly, surgical intervention in the form of a crown-lengthening procedure may be required. And also, proper diagnosis and treatment sequencing is critical to obtain a successful results. Adequate diagnostic wax-up ensures good esthetics and healthy periodontal tissue.