Evaluating the color stability of temporary crowns fabricated by 3-dimensional printing and manual methods.

This in vitro study aimed to compare the color stability of temporary crowns fabricated by 3-dimensional (3D) printing with that of crowns fabricated with 2 manual methods. An impression was made of a prepared central incisor, from which 90 dies were fabricated. The dies were randomly assigned to 3 groups (n = 30) based on crown fabrication method: 3D printing, automix bis-acryl resin, or powder-and-liquid polymethyl methacrylate.

Stress distribution pattern in all-on-four maxillary restorations supported by porous tantalum and solid titanium implants using three-dimensional finite element analysis.

Success/failure of dental implants depends on stress transfer and distribution at the bone-implant interface. This study aimed to assess the stress distribution pattern in all-on-four maxillary restorations supported by porous tantalum and solid titanium implants using three-dimensional (3D) finite element analysis (FEA). In this FEA, a geometric model of an edentulous maxilla, Zimmer screw-vent tantalum and solid titanium implants were modelled.

Compressive Strength of Temporary Crowns Made from Default design in Two Types of Software.

Statement Of The Problem: Various default values in each software can eventually lead to different crown thicknesses and affect their compressive strength.

Purpose: This study aimed to compare the compressive strength of temporary crowns made with the milling machine, designed in Exocad and 3Shape Dental System software.

Materials And Method: In this study, 90 temporary crowns were made and evaluated based on each software settings.

The Comparison of Color Stability of Aloe Vera Gel and Chlorhexidine Solution on Acrylic Teeth.

Background: There is insufficient knowledge about aloe vera color change property on acrylic teeth compared to other denture cleaners, especially chlorhexidine solution (CHX).

Objective: The present study aimed to compare the color change property of the aloe vera and chlorhexidine solution on denture acrylic teeth.

Methods: This study was experimental in vitro study design conducted in the dental laboratory of Tabriz University of Medical Sciences, Iran, 2021.

Comparison of the maximum hand-generated torque by professors and postgraduate dental students for tightening the abutment screws of dental implants.

Dental implants are utilized with an ever-increasing rate. One of the causes of abutment screw loosening has been identified as inadequate preload. The objective behind this study was to compare the maximum hand-generated torque for tightening abutment screws by professors and postgraduate dental students using a digital torquemeter with 0.

Effect of denture cleansing agents on tensile and shear bond strengths of soft liners to acrylic denture base.

The aim of the present study was to evaluate the effect of Corega and 2.5% sodium hypochlorite cleansing agents on the shear and tensile bond strengths of GC soft liner to denture base. A total of 144 samples (72 samples for tensile and 72 for shear bond strength evaluations) were prepared.

Determining the distance from the lingual frenum anterior attachment to the lower incisors' incisal edges.

Occlusal rims are used to determine the jaw relationships in the transverse and vertical dimensions and estimate the inter-occlusal distance in edentulous patients. It is important to find ways to determine the height and shape of the occlusal rims correctly. This study was undertaken to determine the exact distance from the oral cavity floor to the incisal edges of mandibular incisors to serve as a guide for adjusting the height of the mandibular occlusal rim.

The effect of occlusal surface relief of dies on marginal adaptation of metal-ceramic casting copings.

Purpose: The purpose of this study was to evaluate the impact of occlusal relief of dies on internal adaptation of metal-ceramic casting copings.

Materials And Methods: Standardized preparations were made on 80 extracted third molar teeth. Impressions were made with poly(vinyl siloxane), and stone dies were prepared.

Characteristics of anatomical landmarks in the mandibular interforaminal region: a cone-beam computed tomography study.

Objectives: This study was conducted to assess appearance, visibility, location and course of anatomical landmarks in mandibular interforaminal region using cone-beam computed tomography (CBCT).

Study Design: A total of 96 CBCT examinations was re-evaluated to exploit anatomical landmarks. The examinations used the Promax 3D CBCT unit.

Full-mouth rehabilitation of a patient with severely worn dentition and uneven occlusal plane: a clinical report.

Severe tooth wear is frequently multifactorial and variable. Successful management is a subject of interest in dentistry. A critical aspect is to determine the occlusal vertical dimension (OVD) and a systematic approach that can lead to a predictable and favorable treatment prognosis.

A simple method for prosthodontic rehabilitation of edentulous patient with epidermolysis bullosa: a clinical case report.

An abnormally small oral orifice is defined as microstomia. Microstomia may result from epidermolysis bullosa (EB), which consists of a group of disorders characterized by the presence of mechanical fragility of the skin with recurrent de-velopment of blisters and vesicles, resulting from minor mechanical friction or trauma. Since such patients have a small oral aperture, it may be impossible to take impression and fabricate dentures using conventional methods.

Proportions of maxillary anterior teeth relative to each other and to golden standard in tabriz dental faculty students.

Background And Aims: Various methods are used to measure the size and form of the teeth, including the golden pro-portion, and the width-to-length ratio of central teeth, referred to as the golden standard. The aim of this study was to eval-uate the occurrence of golden standard values and golden proportion in the anterior teeth.

Materials And Methods: Photographs of 100 dentistry students (50 males and 50 females) were taken under standard conditions.

Tomographic volume evaluation of submandibular fossa in patients requiring dental implants.

Objective: The aim of this study was to evaluate submandibular fossa volume from multislice CT scans of patients requiring endosseous implants.

Study Design: One hundred spiral computed tomographic (CT) preoperative examinations of patients requiring assessment the lower jaw before implant placement were retrospectively evaluated to determine anatomical variations in bone morphology in the submandibular fossa region. Reformatted cross-sectional images tangential to the mandibular dental arch and distal to the mental foramen border were selected.

Effect of Different Disinfectants on Staphylococcus aureus and Candida albicans Transferred to Alginate and Polyvinylsiloxane Impression Materials.

Background And Aims: Several products have been marketed for disinfecting impression materials. The present study evaluated the effect of Deconex, Micro 10, Alprocid and Unisepta Plus sprays on Staphylococcus aureus and Candida albicans transferred to alginate and polyvinylsiloxane impression materials.

Materials And Methods: A total of 180 impressions of a maxillary model (90 alginate and 90 polyvinylsiloxane im-pressions) were taken for the purpose of this in vitro study.