Effect of material type, torque value, and sterilization on linear displacements of a scan body: An in vitro study.

Background: There is limited knowledge on the effect of scan body (SB) material type, torque value, and sterilization on linear displacements of implant SBs.

Purpose: To evaluate the effect of material type, torque value, and sterilization on linear displacements of SBs during screw tightening by using digital image correlation (DIC) analysis.

Materials And Methods: One polyetheretherketone (PEEK, Zfx Intraoral Scan Body) and one titanium SB (Ti, MPS Zimmer Scanbody R1410) were tightened with 5 Ncm torque on two implants (Zimmer TSV ⌀4.

In Silico Finite Element Analysis of Implant-Supported CAD-CAM Resin Composite Crowns.

Purpose: The aim of this study was to evaluate the mechanical behavior of an implant-supported crown made using computer-aided design and computer-aided manufacturing (CAD-CAM) resin composite (RC) blocks in the posterior region.

Material And Methods: Four commercially available CAD-CAM RC blocks were used in this study: Cerasmart 300 (CS300; GC, Tokyo, Japan), Katana Avencia P Block (KAP; Kuraray Noritake Dental, Niigata, Japan); KZR HR3 Gamma Theta (HR3; Yamakin, Osaka, Japan), and Estelite P block (ESP; Tokuyama Dental, Tokyo, Japan). Katana Zirconia STML (ST; Kuraray Noritake Dental) was used as the control group.

Stress distribution in reduced periodontal supporting tissues surrounding splinted teeth.

The aim of this study was to analyze the distribution of occlusal stresses for splinted and nonsplinted mandibular anterior incisors and to compare different splinting materials. A mandibular model was generated from a patient's computed tomography scan using three-dimensional (3D) software. The mandibular model presented with four periodontally compromised incisors and two canines with optimal bone support (two-thirds crown-root ratio).

Macro design effects on stress distribution around implants: a photoelastic stress analysis.

Objectives: Biomechanics is one of the main factors for achieving long-term success of implant supported prostheses. Long-term failures mostly depend on biomechanical complications. It is important to distinguish the effects of macro design of the implants.

In vivo and in vitro assessment of an intraoral dental colorimeter.

Purpose: The purpose of this study was to assess the performance of an intraoral dental colorimeter.

Materials And Methods: In vivo repeatability of an intraoral colorimeter was assessed by performing color measurements of 30 individuals' right maxillary central incisor. Three consecutive measurements from each individual were made.

The effect of different shades of specific luting agents and IPS empress ceramic thickness on overall color.

The color stability of both porcelain and luting materials is very important for the esthetics of laminate veneers and all-ceramic crowns. The purpose of this study was to determine the effect of different shades of resin-based luting cement and the thickness of IPS Empress ceramics on the final color of the restorations. Resin-based dual-polymerized composite cement in two different shades (RelyX ARC) and ceramic disks of different thicknesses were selected for the study.

Restoration of endodontically compromised anterior teeth with fiber posts and zirconia all-ceramic system. Case study.

Deciding what material to use to restore endodontically treated teeth complicated by total or partial loss of coronal tooth structure is sometimes difficult for the clinician. It is important to use materials that minimize risk and best accommodate clinical conditions and patient desires. This report describes the restoration of endodontically compromised maxillary incisors with fiber posts and a zirconia all-ceramic system.

The use of a computerized tomography-based software program with a flapless surgical technique in implant dentistry: a case report.

Successful implant treatment includes osseointegration, as well as prosthetically optimal positions of the implants for esthetics and function. The aim of this study is to evaluate a patient that was treated with an implant-supported fixed prosthesis with the help of computer-assisted three-dimensional planning. A 52-year-old edentulous man underwent computerized tomographic (CT) scanning, and the cross sections were reformatted.

Interdisciplinary treatment of multiple maxillary anterior diastemas: case report.

This article describes an interdisciplinary (orthodontic and prosthodontic) approach for treating a 28-year-old woman who had multiple maxillary anterior diastemas, insufficient lip support, and inadequate anterior guidance. Although the patient also had diastemas among her mandibular anterior teeth, she declined orthodontic or restorative treatment for this arch. Initially, ceramic orthodontic brackets and polytetrafluoroethylene-coated arch wires were used.

Assessment of bone density differences between conventional and bone-condensing techniques using dual energy x-ray absorptiometry and radiography.

Objectives: We used dual energy x-ray absorptiometry (DEXA) and periapical radiography to assess bone density differences after conventional and bone-condensing dental implant techniques.

Study Design: Single-tooth dental implants were placed by both conventional and bone-condensing techniques in 14 patients with bilateral missing teeth. Dual energy x-ray absorptiometry was used to calculate bone mineral density (BMD) and bone mineral content (BMC) before and 6 and 12 months after implant placement.