Comparison of Heat Transfer Through Various Fixed Prosthetic Materials During Grinding.

Purpose: To measure and compare the mean temperature values due to heat generated during the grinding of different prosthetic materials with diamond burs using a high-speed instrument with and without water cooling.

Materials And Methods: In total, 120 disk-shaped specimens (10 × 2 mm), each with a smaller disk in the center (3 × 2 mm), were fabricated from yttrium-stabilized zirconia, monolithic zirconia, glass-ceramic, indirect composite, polyetheretherketone (PEEK), and cast metal (Ni-Cr alloy). The specimens were divided into six groups (n = 20) according to material type.

The effect of different denture cleansing solutions on the retention of polyetheretherketone locator attachments.

Purpose: Prosthetic cleansing solutions have been reported to cause retention loss in implant locator attachments due to the chemical alterations of these attachments. This study aimed to investigate the effects of different denture cleansing solutions on attachments with different retention values.

Materials And Methods: In this study, 160 polyetheretherketone locator attachments were divided into 4 groups according to their attachment retention values (yellow, pink, clear, and violet).

Effect of intraoral scanning distance on the marginal discrepancy of milled interim crowns.

Purpose: To compare the marginal discrepancy between milled interim crowns fabricated using intraoral digital scans acquired at different scanning distances.

Materials And Methods: Ten acrylic typodont teeth were prepared for interim crowns. Three different resin frames of 2.

A 3D finite element analysis of stress distribution on different thicknesses of mineral trioxide aggregate applied on various sizes of pulp perforation.

Objectives: The aim of this study was to evaluate the stress distribution on different thicknesses of mineral trioxide aggregate (MTA) placed on various widths of pulp perforations during the condensation of the composite resin material.

Materials And Methods: The mandibular molar tooth was modeled by COSMOSWorks program (SolidWorks, Waltham, MA). Three finite elemental analysis models representing 3 different dimensions of pulp perforations, 1, 2, and 3 mm in diameter, were created.

In Vitro Evaluation of Shear Bond Strength of Three Primer/Resin Cement Systems to Monolithic Zirconia.

Purpose: To investigate the shear bond strength (SBS) of various primer/resin cement systems to monolithic zirconia under different levels of storage.

Materials And Methods: Disk-shaped specimens of monolithic zirconia (10 × 3 mm, n = 72) were polished with silicon carbide paper, and the bonding surfaces were sandblasted with aluminum oxide (AlO). The samples were divided into three groups (n = 24) according to primer/cement system: Z-PRIME Plus/DUO-LINK (Bisco); Clearfil Ceramic Primer Plus/PANAVIA SA (Kuraray); and Single Bond Universal Adhesive/RelyX Ultimate (3M ESPE).

Reliability of the Osstell Implant Stability Quotient and Penguin Resonance Frequency Analysis to Evaluate Implant Stability.

Purpose: To evaluate the reliability of the Osstell implant stability quotient (ISQ) and Penguin resonance frequency analysis (RFA) devices in measuring implant stability.

Materials And Methods: Forty implants were embedded in self-curing acrylic resin, soft-lining material, polyvinyl siloxane impression material, and polycarboxylate cement (n = 10). After the initial setting times were completed, the stability of each implant was measured with Osstell ISQ and Penguin RFA with 3 repeated measurements.

Influence of Post Space Preparation on the Apical Leakage of Calamus, Single-Cone and Cold Lateral Condensation Obturation Techniques: A Computerized Fluid Filtration Study.

Purpose: Apical microleakage between the root canal and periapical tissues is considered a common cause of endodontic failure. The aim of this study was to evaluate the apical microleakage of various obturation techniques after immediate post space preparations with different drills.

Materials And Methods: One hundred twenty human single-rooted teeth were selected for this study.

Evaluation of morphology of the nasopalatine canal using cone-beam computed tomography in a subgroup of Turkish adult population.

Purpose: The aim of the study was to evaluate the anatomy and morphology of the nasopalatine canal (NPC) using cone-beam computed tomography (CBCT) and to determine variations of the NPC in relation to age, gender, and status of edentulism of anterior maxilla.

Methods: Patients scheduled for CBCT imaging for further radiographic evaluation of the maxilla with various reasons were consecutively enrolled in this study. Reformatted sagittal and coronal slices were analyzed with regard to dimensions and anatomic characteristics of the NPC.

3D FEA of Hollow and Solid Design Zirconia Dental Dowels.

Purpose: The aim of this study was to evaluate the stress distribution of hollow and solid design zirconia dowels.

Materials And Methods: Finite element analysis (FEA) was used to investigate the influence of different dowel designs on the stress distribution of zirconia dowels. The coronal diameter of the dowel was 2.

Patients' knowledge and awareness of dental implants in a Turkish subpopulation.

Purpose: The purpose of this study was to evaluate the patients' knowledge on dental implants in a Turkish subpopulation.

Materials And Methods: Five hundred twenty seven Turkish adults referred to Yeditepe University Faculty of Dentistry, Istanbul, Turkey, were presented with a questionnaire including 20 questions regarding the level of information and awareness about the dental implants. The data were collected and statistical analyses were performed with Chi square test to compare the descriptive data.

Prosthetic rehabilitation of maxillary dentoalveolar defects with fixed dental prostheses: two clinical reports.

Traumatic injuries or congenital malformations may cause soft and hard tissue defects resulting in the loss of alveolar bone and attached mucosa. Restoring the defective area presents a challenge for clinicians. The prosthetic rehabilitation of 2 patients with maxillary dentoalveolar defects with 2 different prosthetic designs is presented.

Management of a fractured implant abutment screw: a clinical report.

In an abutment screw fracture, it is generally a challenge for the clinician to remove fractured fragments. In some cases, the screw cannot be removed, and alternative solutions should be considered. This clinical report describes the replacement of a ball attachment with a fractured screw, which was impossible to retrieve, with a cast dowel with ball attachment.