Background. Designing a high strength all-ceramic fixed partial denture with favorable esthetics can be challenging for clinicians; this study aimed to evaluate the effect of connector size and design on fracture resistance monolithic zirconia dental prostheses. Methods. Two groups twenty 3-unit (Sirona inCoris TZI, Sirona Dental Systems GmbH) bridges, extending from mandibular first premolar molar different sizes (9 mm2 12 ), were divided into two subgroups designs (round sharp). The...

This study aimed to investigate whether dentin surface preparation with diamond rotary instruments of different grit sizes affects the shear bond strength resin-bonded restorations. The buccal enamel 60 maxillary central incisors was removed a low speed saw and wet ground silicon carbide papers. polished surfaces teeth were prepared four groups burs super-coarse (SC), coarse (C), medium (M), fine (F) sizes. Following preparation, restorations casted nickel-chromium alloy bonded Panavia...

PURPOSE.Polyamide polymers do not provide sufficient bond strength to auto-polymerized resins for repairing fractured denture or replacing dislodged teeth.Limited treatment methods have been developed improve the between reline and polyamide base materials.The objective of present study was evaluate effect surface modification by acetic acid on characteristics resin base.MATERIALS AND METHODS.84 specimens were divided into three groups (n=28): control (N), silica-coated (S), acid-treated...

This laboratory study assessed the effect of different dentin cleaning procedures on shear bond strength resin cements for recementing prosthesis.MATERIALS AND METHODS.A 4 × flat surface was prepared labial 52 maxillary central incisors.Metal frames (4 1.5 mm) were cast with nickel-chromium alloy.All specimens randomly divided into 2 groups to be cemented either Panavia F2.0 (P) or RelyX Ultimate (U) cement.The initial recorded by Universal Testing Machine at a crosshead speed 0.5...

Background. Various occlusal schemes have been introduced over the years to enhance stability, comfort, beauty and function of complete denture, which lingualized, bilateral balanced monoplane occlusions are most recommended. The aim this study was compare strain in mandibular denture-supporting structures three different schemes. Methods. Two maxillary models were simulated using epoxy resin, gauges embedded on each side mandible mental foramen, buccal shelf distolingual area. Strain values...

Introduction:Objective Structured Clinical Examination (OSCE) is one of the most authentic ways to evaluate clinical skills.The present study aimed at evaluating attitude dental prostheses residents faculty dentistry Tabriz University Medical Sciences toward this kind examination.Methods: In cross sectional-descriptive study, two questionnaires were designed.One questionnaire dealt with nature OSCE and other about OSCE.After holding in July 2012, 2013, 2014, delivered all faculty.In total,...

Introduction Proper impression procedure is essential to obtain good retention and peripheral seal andprovides support stability for complete denture(1,2).Ideally, the established borders of final should be similar in thickness length denture flanges(1,3,4).Followingtheprede

Class III malocclusions are considered complex and difficult orthodontic problems to diagnose treat. The purpose of this study was investigate the morphologic characteristics craniofacial adults with malocclusion in an Iranian population.Lateral cephalometric radiographs 50 patients (20 males 30 females; age range 18-27 years) were selected on basis molar relationship, concave profile overjet ≤ 0 mm. standard values 19 soft tissue measurements determined using McNamara, Burstone Viazis...

The dimensional accuracy of casts is essential in the quality fixed prosthesis treatment, whereby impression method a very crucial factor affecting it. aim this vitro study to compare resulting from two types silicone materials different techniques and frequent times cast preparation. A metal model was made prepared abutments, 10 were each material technique (n = 40). impressions by condensation addition (one-stage two-stage impressions). same 1 h, 24 14 days. diameter, height, distance...

Introduction: Nutrition is one of the basic requirements for growth and development. In all age groups, good oral health necessary masticatory efficacy, sense taste, deglutition, articulation aesthetics. The aim this study was to assess relationship between tooth loss food intake in a group middle aged population. Materials Methods: A total number 200 participants with range 40-60 years were chosen divided into four groups. population classified groups by permanent teeth present. Required...

<p><strong>AIM:</strong> This study was aimed at evaluating the quality of written prescriptions for fixed and removable prosthesis in Tabriz, northwest Iran.<strong></strong></p><p><strong>METHODS:</strong> To assess partial dentures, a total 600 questionnaires were distributed among 15 licensed dental laboratories receiving both projects. The technicians instructed to complete all received projects prostheses responses...

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...

Abstract Purpose Limited surface treatments have been proposed to improve the bond strength between autopolymerizing resin and polyamide denture base materials. Still, of resins nylon polymer is not strong enough repair fractured effectively. This study aimed introduce a novel method adhesion by double layer deposition sol‐gel silica N‐2‐(aminoethyl)‐3‐aminopropyltrimethoxysilane (AE‐APTMS). Materials Methods The sol was synthesized acid‐catalyzed hydrolysis tetraethylorthosilicate (TEOS) as...

Introduction: Marginal adaptation of a crown is an important factor affecting its clinical acceptability and durability; also, poorly fitting cast restoration enables bacterial plaque accumulation leads to teeth caries periodontal deterioration. Purpose: The purpose this study was evaluate marginal 4all, Verabband2, T3 Supremcast V base metal alloys before after porcelain firing. Material Method: In experimental study, sound maxillary first premolar prepared with chamfer shoulder-bevel...

Introduction: Nutrition is one of the basic requirements for growth and development. In all age groups, good oral health necessary masticatory efficacy, sense taste, deglutition, articulation aesthetics. The aim this study was to assess relationship between tooth loss food intake in a group middle aged population. Materials Methods: A total number 200 participants with range 40-60 years were chosen divided into four groups. population classified groups by permanent teeth present. Required...

The present article describes a case of prosthetic rehabilitation with the new technique prefabricated osteo-cutaneous free fibula flap for reconstructing maxillary defect which had resulted from ameloblastoma. and cuff 6-8 mm were prepared its pedicle intact. bone was left in place intact 2 to 3 months; skin graft inflammation. then transferred maxilla. Implant placement performed 4 6 months after transfer oral cavity. Three titanium implants, width length 13 mm, placed using conventional...

To evaluate the effect of sintering speed and polishing or glazing on failure load (FL) monolithic zirconia fixed partial dentures (FPDs).A total 40 three-unit FPDs extending from mandibular first premolar to molar were evaluated. The prepared typodont teeth scanned, prostheses designed. Afterwards, milled blanks. samples divided into classic groups (n = 20 each). Half in each group 10) polished with an electric handpiece according manufacturer's instructions, other half glazed. All...

Management of tooth wear has been subject increasing interest from both preventive and restorative points view. This article describes the systematic rehabilitation a 60-year-old man with severe worn dentition several missing teeth. The treatment was to restore cast posts cores porcelain-fused-to-metal (PFM) restorations. success ensured equal-intensity centric occlusal contacts on all teeth, development anterior guidance posterior disclusion in harmony functional border movements. Keywords:...