Reverse engineering of mandible and prosthetic framework: Effect of titanium implants in conjunction with titanium milled full arch bridge prostheses on the biomechanics of the mandible.

This study aimed at investigating the effects of titanium implants and different configurations of full-arch prostheses on the biomechanics of edentulous mandibles. Reverse engineered, composite, anisotropic, edentulous mandibles made of a poly(methylmethacrylate) core and a glass fibre reinforced outer shell were rapid prototyped and instrumented with strain gauges. Brånemark implants RP platforms in conjunction with titanium Procera one-piece or two-piece bridges were used to simulate oral rehabilitations.

Correlation of radiographic fractal analysis with implant insertion torque in a rabbit trabecular bone model.

Purpose: Insertion torque and resonance frequency analysis are currently used to assess the initial biomechanical competence of an implant. It would be advantageous to have this information during treatment planning. Therefore, the aim of this study was to assess the correlation between a descriptor of bone architecture, namely the fractal analysis of plain radiographs, and implant insertion torque and resonance frequency.

Implant placement in combination with sinus membrane elevation without biomaterials: a 1-year study on 15 patients.

Background: Membrane elevation in combination with implant placement without biomaterials is a rather new technique proposed for sinus lifting.

Purpose: This study assessed the clinical outcome of such technique during the first year of loading.

Material And Methods: Fifteen patients with a mean residual bone height of 6.

Influence of abutment material on the fracture strength and failure modes of abutment-fixture assemblies when loaded in a bio-faithful simulation.

Objectives: The aim of the present study was to evaluate differences in the ultimate fracture resistance of titanium and zirconia abutments.

Material And Methods: Twenty titanium fixtures were embedded in 20 resin mandible section simulators to mimic osseointegrated implants in the premolar area. The embedded implants were then randomly divided into two groups.

One-year outcome of implants strategically placed in the retrocanine bone triangle.

Background: Implant treatment in the partially edentulous maxilla is often challenging because of minimum bone volumes in distal direction.

Purpose: The aim of this study was to evaluate, after 1 year of loading, the outcome of three-unit fixed partial dentures supported by two implants in the retrocanine triangle.

Materials And Methods: Twenty patients with atrophic posterior maxillae participated in the study.

Soft bone primary stability of 3 different miniscrews for orthodontic anchorage: a resonance frequency investigation.

Introduction: Several miniscrews are available for skeletal anchorage. They have different geometries with self-drilling or self-tapping features. The aim of this study was to evaluate the soft bone primary stability of 3 different orthodontic screws by using the resonance frequency analysis.

Damping factor for monitoring the bone interface at dental implants.

Objectives: The aim of this study is to investigate whether the damping of osseointegrated implants, as measured quantitatively with the Osstell equipment, is related to the fractal dimension of peri-implant bone.

Material And Methods: Fifty-five maxillary implants in function for 3 years before the present study were investigated. Two Osstell measurements were obtained for each implant with the transducer oriented first palatally and then distally.

Influence of transducer orientation on Osstell stability measurements of osseointegrated implants.

Background: Resonance frequency (RF) analysis is frequently used to monitor implant stability in patients. The influence of transducer orientation on RF of implants placed in jawbone has not been evaluated.

Purpose: The aim of this study was to evaluate to what extent transducer orientation influences RF.

In vitro comparison of shaping abilities of ProTaper and GT rotary files.

This study analyzed the abilities of ProTaper and GT Rotary files to shape the curved canals of extracted mandibular molars. Twenty mesial canals with curvatures ranging from 23 to 54 degrees (Weine analysis) were radiographically selected from a group of 58 molars. The specimens, divided into two groups, were instrumented using the two systems according to the manufacturer's guidelines.

Stability measurements of osseointegrated implants using Osstell in partially edentulous jaws after 1 year of loading: a pilot study.

Background: The introduction of resonance frequency analysis (RFA) as a commercially available technique has made it possible to measure implant stability in implant stability quotient (ISQ) units at any time during the course of implant treatment and loading. However, no information on normal ISQ levels can be found in the literature.

Purpose: The aim of this pilot study was to measure the stability of clinically successful implants in partially edentulous patients after 1 year of loading and to study the influence of jaw, anterior/posterior position, implant length, and marginal bone level on implant stability.

Scanning electron microscopic investigation of the surface of fiber posts after cutting.

This study evaluated the surface of different types of fiber posts after cutting and investigated whether different cutting procedures can affect the integrity of the posts. Six types of fiber posts were selected for this study (Carbon Fiber Posts, Quartz Fiber Posts, Aesthetic Posts, Aesthetic Plus Posts, Translucent Posts, Dentatus, FRC Postec Posts). Fifteen posts of each type were studied.

Evaluation of Glyde File Prep in combination with sodium hypochlorite as a root canal irrigant.

The purpose of this study using a scanning electron microscope was to investigate the efficacy of four different irrigation techniques after canal preparation with Profile Ni-Ti rotary instruments. A modified technique for the use of Glyde File Prep is proposed. Forty anterior teeth were divided into four groups, instrumented, and irrigated as follows: physiological solution (group A), 2.