Effect of Er,Cr: YSGG laser debonding treatment on the optical properties and surface roughness of ceramic laminate veneers: An in vitro study.

Purpose: The objective of this study was to evaluate the effect of (Er,Cr: YSGG) laser debonding treatment on optical properties and surface roughness of veneers made of different ceramic materials.

Materials And Methods: Thirty bovine incisors were prepared to receive laminate veneers and divided into three groups (n = 10) according to ceramic material where group (E): IPS e.max CAD, group (S): Vita Suprinity, and group (C): Celtra Duo.

Laser debonding of ultrathin occlusal veneers fabricated from different CAD/CAM ceramic materials.

Background: Erbium lasers safely offer the possibility of reuse for debonded restorations. Since these lasers have a high affinity for water molecules, they are absorbed by resin cement causing explosive ablation of the cement and thus, the restoration debonds. The efficiency of this process depends on many factors, including the ceramic type, its chemical composition and thickness.

Effect of surface treatment and resin cement type on the bond strength of polyetheretherketone to lithium disilicate ceramic.

Background: This study aims to evaluate the effect of surface treatment and resin cement on the shear bond strength (SBS) and mode of failure of polyetheretherketone (PEEK) to lithium disilicate ceramic (LDC). This is suggested to study alternative veneering of PEEK frameworks with a ceramic material.

Methods: eighty discs were prepared from PEEK blank and from lithium disilicate ceramic.

Strain gauge analysis and fracture resistance of implant-supported PEKK hybrid abutments restored with two crown materials: An in vitro study.

Background: Polyetherketoneketone (PEKK) was recently introduced as an alternative to titanium and ceramic implant abutments due to its apparent ability to dissipate excessive strain around dental implants. However, the biomechanical behaviors of implant abutment crown systems may change depending on the crown and abutment material combinations used.

Objectives: This study aimed to assess how the crown material affects strain generation and fracture resistance of PEKK hybrid abutment crowns.

Arthroscopic management of avulsion fractures of the tibial attachment of the posterior cruciate ligament: A novel technique and mid-term outcomes.

Purpose: This study assessed the outcomes of arthroscopic management of avulsion fractures of the tibial attachment of the posterior cruciate ligament (PCL), with holding of the PCL with two ''cinch knots''.

Methods: 15 patients with avulsion fractures of the tibial attachment of the PCL were treated with arthroscopic reduction and fixation with holding of the PCL with two ''cinch knots''. All patients were males with mean age of 28 (range, 15-44) years.