The purpose was to evaluate the bond strength between adhesive cement and translucent zirconia in comparison conventional zirconia. Four brands of (BruxZir® HT, Lava™ Plus, Prettau® Anterior, Zirconia) one (Kavo Everest® ZS) were evaluated. Specimens divided into groups depending on pretreatment cementation surface zirconia: as-produced, hydrofluoric acid treatment, or sandblasted. underwent three different procedures artificial aging: water storage (24 h), 5,000 thermocycles, long-term...

To evaluate how laboratory polishing and glazing clinical adjustments, i.e., by grinding affect the biaxial flexural strength surface characterization of multilayer zirconia. Specimens KATANA™ Zirconia YML, containing Enamel-Body 1 or Body 2-3 layers, UTML were divided into 18 groups (n = 11) according to material/layer finish treatment: polishing, glazing, both, followed adjustments. The roughness, structure elemental composition evaluated. Thermocyclic-mechanical cyclic loading test...

Background: The intraosseous temperature during implant installation has never been evaluated in an vivo controlled setup. aims were to investigate the influence of a drilling protocol and surface on installation, evaluate increase osseointegration calculate heat distribution cortical bone. Methods: Forty Brånemark implants installed into metatarsal bone Finnish Dorset crossbred sheep according two different protocols (undersized/non-undersized) surfaces (moderately rough/turned). was...

Abstract Objective The aim of this study was to evaluate the influence combining primers and cements from two different resin cement systems on microtensile bond strength (μTBS) between zirconia human dentin. Materials methods A total 120 specimens cemented dentin were allocated into eight groups based type (RelyX Ultimate or Panavia V5) (Tooth Primer, Clearfil Ceramic Primer Scotchbond Universal Adhesive) combinations, applied ceramic surfaces. Following artificial aging with 5000...

Objective: To evaluate fracture strength of veneered translucent zirconium dioxide crowns designed with different porcelain layer thicknesses.Materials and Methods: Sixty crowns, divided into six groups 10, were used in this study. Groups according to thicknesses veneer on cores equal thickness (0.5 mm). Porcelain 2.5, 2.0, 1.0, 0.8, 0.5 0.3 mm. Crowns artificially aged before loaded fracture. Determination mode was performed using light microscope.Results: Group 1.0 mm showed significantly...

Abstract Purpose To evaluate the influence of framework designs on stress distribution within tooth‐supported partially veneered fixed dental prostheses (FDPs) made translucent zirconia under simulated loads using a three‐dimensional finite element analysis (3D‐FEA). Material and Methods For linear 3D‐FEA, simplified 3D solid models prepared abutment teeth (first premolar first molar) with different 3‐unit FDPs were created. The FDP designs—monolithic (control); semi‐monolithic 0.3 mm veneer...

Abstract Introduction The objective was to investigate changes in students' and clinical mentors' perceptions of a model for outreach education over 5‐year period, 2006–2010. Material method Two cohorts last‐year students dental problem‐based curriculum their mentors the Public Dental Service ( PDS ) were invited respond questionnaire. In 2006, 85% 54 72% responded; 98% 40 88% 41 did so 2010. Participants scored level agreement with different statements on numeric rating scale gave comments....

In order to determine a suitable thickness of polyetheretherketone (PEEK) for manufacturing surgical membranes, the purpose was evaluate how different thicknesses PEEK influence mechanical properties under flexure and tension. total 20 specimens in with two thicknesses, 0.5 mm 1.0 were fabricated tested three-point flexural strength test tensile (n = 5 specimens). Statistical analysis done non-parametric Mann-Whitney level significance α 0.05, both material tests, respectively. The mm-thick...

The aim of this study was to describe different designs semimonolithic crowns made translucent and high-translucent zirconia materials evaluate the effect on fracture resistance mode.One hundred with were produced divided into five groups (n=20): monolithic (M), partially veneered (semimonolithic) 0.3 mm buccal veneer (SM0.3), 0.5 (SM0.5), supported by wave design (SMW), occlusal cap (SMC). Each group two subgroups (n=10) according used, zirconia. All underwent artificial aging before...

To assess and compare the clinical outcomes of three different types all-ceramic posterior monolithic tooth-supported crowns.A total 71 patients received 90 crowns randomized to be either high-translucency zirconia (ZC), with a partial buccal veneer (ZC-V), or lithium disilicate glass-ceramic (LDS). All treatments were performed by four general dentists who blinded material used. Baseline subsequent annual evaluations based on modified California Dental Association (CDA) criteria. A...

The objectives were to analyze the oxide layer generated between titanium and porcelain during firing compare it in different manufacturing techniques: cast, milled EBM-technique. Seventy two specimens manufactured, subdivided according surface treatment: time of passivation (P) no (NP) before firing. Specimens from each group analyzed with scanning electron microscopy: one only fired once, subjected six firings. Remaining shear bond strength test. EBM-produced NP-group had highest mean...

Abstract Purpose To investigate the load‐bearing capacity and failure mode of monolithic zirconia fixed dental prostheses (FDPs) fabricated with different connector designs embrasure shaping methods. Materials Methods Seventy four‐unit FDPs (with two premolar pontics) were divided into seven groups (n = 10) according to gained by using The as follows: sharp embrasures, blunt embrasures no occlusal interproximal separations made diamond discs at soft stage fully sintered stage, separation...

The purpose of the study was to evaluate accuracy: trueness and precision photopolymers used for dental models surgical guides printed with two different digital light processing (DLP) printers. Forty specimens four materials; E-dentstone®, E-shell®, NextDent™ Model, SG, designs; A B (n=5), were manufactured (DDDP, EvoDent). Trueness evaluated by comparing values 26 parameters CAD models' reference through standard deviation. higher linear than angle parameters. X- Y-axes showed Z-axis model...

To determine the biologic and biomechanical effects of two implant drilling protocols on cortical bone around implants subjected to immediate loading.A total 48 were inserted into mandibles six sheep following one protocols: undersized preparation (US; n = 24) nonundersized (NUS; 24). Immediately after insertion, an abutment was placed each 36 10 sessions dynamic vertical loads (1,500 cycles, 1 Hz) 25 N or 50 N. Insertion torque value (ITV) recorded at installation. Resonance frequency...

Abstract Introduction Different materials and restorative concepts have been proposed over the years to restore endodontically treated teeth (ETT). Monolithic ceramic composite restoration can be lute tooh, without use of a post. However, little is known how material stiffness presence core will affect survival failure mode. The objective this in‐vitro study was evaluate fracture strength mode molars, restored with or hybrid monolithic restoration, in absence core. Materials Methods Sixty...

The objectives of the study were to describe a novel method for producing zirconium dioxide specimens with cementation surface that allows adhesive techniques, structure and evaluate bond strength. Forty-eight pairs fabricated adhesively luted together. Three different surfaces tested: impaction-modified created by using glass granules (G), polymer (P) nonmodified control (C). Two bonding systems used, Variolink(®)II (VA) or Panavia™F 2.0 (PA). During fabrication steps, examined under light...

tidende Tema: Keramer Bonding ceramic restorations restorationsPorcelain and glass ceramics need to be bonded teeth for the reinforcement of restorations: according studies, best results are achieved by pretreating etching surface with hydrofluoric acid, then applying a silane coupling agent or primer, luting light-or dual-cured adhesive cement, depending on restoration thickness.Zirconia may cemented after gentle roughening airborne abrasion (grit-blasting) using an resin composite...

Abstract Objectives This randomised controlled trial compares the 3‐year outcomes, that is, marginal bone‐level (MBL) changes and clinical parameters, between an abutment‐level (AL) implant‐level (IL) connection for implants with internal conical (ICC) supporting a screw‐retained fixed partial denture. Material methods Fifty patients 119 were randomly allocated to either AL or IL group. Radiographic examinations performed after one, two, 3 years. A linear mixed model was used evaluate...

The objective was to compare marginal defects and evaluate discoloration for adhesively cemented veneers in vitro when using two cement removal techniques. Twenty premolars were prepared with chamfer borders enamel. IPS e.max CAD Panavia V5 divided groups (n = 10): excess removed a probe after tack-curing 3-5 s, or brush, then completely polymerized. All teeth stored alginate gel until micro-CT examination. Scanning performed twice: directly cementation thermocycling (5000 cycles, between 5...