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 96 CBCT examinations re-evaluated exploit landmarks.The used the Promax 3D unit.A sole examiner carried out all measurements.Visibilities were scored a four-point rating scale.Results: The foramen, anterior loop, incisive canal lingual foramen observed 100,84,83,49 % images,...

Abstract Severe tooth wear is frequently multifactorial and variable. Successful management a subject of interest in dentistry. A critical aspect to determine the occlusal vertical dimension (OVD) systematic approach that can lead predictable favorable treatment prognosis. Management patients with worn dentition complex difficult. Accurate clinical radiographic examinations, diagnostic wax‐up, determining OVD are crucial. Using mini‐implants as orthodontic anchorage may facilitate movement...

Success/failure of dental implants depends on stress transfer and distribution at the bone-implant interface. This study aimed to assess pattern in all-on-four maxillary restorations supported by porous tantalum solid titanium using three-dimensional (3D) finite element analysis (FEA). In this FEA, a geometric model an edentulous maxilla, Zimmer screw-vent were modelled. Four models with concept designed. The fifth had 6 vertical (all-on-six). Two different implant types (porous titanium)...

Various methods are used to measure the size and form of teeth, including golden pro-portion, width-to-length ratio central referred as standard. The aim this study was eval-uate occurrence standard values proportion in anterior teeth.Photographs 100 dentistry students (50 males 50 females) were taken under conditions. visible widths lengths maxillary right left incisors calculated ratios compared with Data analyzed using SPSS 14 software.Review results means showed statistically significant...

The first few days following the insertion of complete dentures are critical for patients since they struggling to adapt their new dentures. This study aimed evaluate most common locations traumatic ulcerations, frequency and also duration number adjustment visits required achieve patient comfort fol-lowing placement dentures.Sixty were selected from edentulous referring a removable prosthodontics department. Complete fabricated patients. After dentures, all evaluated day after until was...

Background. The aim of the present study was to evaluate effect Corega and 2.5% sodium hypochlorite cleansing agents on shear tensile bond strengths GC soft liner denture base. Methods. A total 144 samples (72 for 72 strength evaluations) were prepared. in each group subdivided into three subgroups terms agent used (2.5% hypochlorite, distilled water [control group]). All stored water, during which sample immersed 15 minutes daily or solutions. After 20 days determined using a universal...

AbstractAbstractWe report on the effect of chemical disinfection in aqueous 1% virkon, 0·525% hypochlorite and slurry solutions mechanical structural properties type III IV dental stones. For both stones, compressive strength diametral tensile decrease with application all types disinfectants. Virkon disinfectant decreases lowest magnitude. The X-ray diffraction patterns samples show existence dihydrate hemihydrates microcrystals along traces CaSO4.xH2O (x = 0·02–0·48) as prepared samples,...

There is insufficient knowledge about aloe vera color change property on acrylic teeth compared to other denture cleaners, especially chlorhexidine solution (CHX). The present study aimed compare the of and teeth. This was experimental in vitro design conducted dental laboratory Tabriz University Medical Sciences, Iran, 2021. sample size each group 21 which were randomly divided into gel 100% 2% groups. Tooth colors measured by a spectrophotometer (Spectro Shade Micro, MHT S.P.A., Milan,...

Background. Dental implants are utilized with an ever-increasing rate. One of the causes abutment screw loosening has been identified as inadequate preload. The objective behind this study was to compare maximum hand-generated torque for tightening screws by professors and postgraduate dental students using a digital torquemeter 0.1 N/cm precision. Methods. In laboratory conducted in Implant Department Faculty Dentistry, Tabriz University Medical Sciences, investigated, Results. participants...

Various default values in each software can eventually lead to different crown thicknesses and affect their compressive strength.This study aimed compare the strength of temporary crowns made with milling machine, designed Exocad 3Shape Dental System software.In this vitro study, 90 were evaluated based on settings. For purpose, a sound premolar was first scanned as pre-operative model by laboratory scanner. The standard tooth preparation scanning performed, then files (designed software)...

The management of tooth wear has been a subject increasing interest from both preventive and restorative points view. This article describes the full mouth rehabilitation 54-year-old bruxer woman with severely worn dentition other dental problems including unsuitable restorations several missing teeth. treatment entailed using cast posts cores, metal-ceramic restorations, removable partial denture. As procedure such cases, equal-intensity centric occlusal contacts on all teeth an anterior...

Abstract Purpose The purpose of this study was to evaluate the impact occlusal relief dies on internal adaptation metal‐ceramic casting copings. Materials and Methods Standardized preparations were made 80 extracted third molar teeth. Impressions with poly(vinyl siloxane), stone prepared. Dies covered four layers die spacer, covering entire preparation together surface excluding apical 0.5 mm in group 1 (40 specimens), same area 2 specimens). Copings cast using nickel–chromium‐based metal...

This study was carried out to evaluate implant drills' cleaning protocols efficiency as tested by the use of nuclear medicine.Eighty-one new drills 2 different systems (Nobel Biocare and BioMet 3i) were selected samples. Six these used positive control group, rest contaminated with TC-labeled blood. The instruments divided randomly into 5 groups (negative group; group 1: immersion brushing; 2: brushing then evaluation under magnifier; 3: ultrasonic for 15 minutes; 4: 30 minutes) so that...

Background. Occlusal rims are used to determine the jaw relationships in transverse and vertical dimensions estimate inter-occlusal distance edentulous patients. It is important find ways height shape of occlusal correctly. This study was undertaken exact from oral cavity floor incisal edges mandibular incisors serve as a guide for adjusting rim. Methods. Forty patients were selected special trays fabricated prepare accurate stone casts on which measurements made at 0.01-mm accuracy. Two...

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

Introduction: This study aimed to examine the setting time of dental stone type IV by adding different percentages (0.5, 1, 2, 5) silica nanoparticles. Materials and Methods: In this in vitro study, nanoparticles (silicon dioxide) were added at concentrations 0.5%, 1%, 2%, 5% weight. Forty samples divided into five groups: 5%, a control group. The prepared according manufacturer's instructions tested ISO 6873 standard using Vicat device. from start mixing until needle could no longer fully...

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 Candida albicans transferred to alginate polyvinylsiloxane materials.A total 180 impressions a maxillary model (90 90 im-pressions) were taken purpose this in vitro study. Half infected with au-reus other half albicans. Then microorganisms cultured their counts determined. Subsequently, divided into...