نتایج جستجو برای: ceramic inserts

تعداد نتایج: 28486  

Journal: :The Journal of prosthetic dentistry 2015
René Steiner Ulrike S Beier Irene Heiss-Kisielewsky Robert Engelmeier Herbert Dumfahrt Matilda Dhima

STATEMENT OF PROBLEM During the insertion appointment, the practitioner is often faced with the need to adjust ceramic surfaces to fit a restoration to the adjacent or opposing dentition and soft tissues. PURPOSE The purpose of this study was to assess the ceramic surface smoothness achieved with various commercially available ceramic polishing kits on different commonly used ceramic systems....

2013
Francesco Traina Marcello De Fine Alberto Di Martino Cesare Faldini

Ceramic bearing surfaces are increasingly used for total hip replacement, notwithstanding that concern is still related to ceramic brittleness and its possible mechanical failure. The aim of this systematic review is to answer three questions: (1) Are there risk factors for ceramic component fracture following total hip replacement? (2) Is it possible to perform an early diagnosis of ceramic co...

Journal: :International journal of technology assessment in health care 2005
Afschin Gandjour Thomas Kerschbaum Andreas Reis Karl Wilhelm Lauterbach

OBJECTIVES An example of technology assessment in dental care by evaluating the (cost-)effectiveness of types of three-surface inlays (gold, laboratory-fabricated ceramic, and chairside CAD/CAM ceramic) is provided. METHODS MEDLINE, EMBASE, and the Cochrane Library were searched for studies published between 1966 and June 2003 that reported annual survival probabilities and annual observation...

Journal: :European journal of orthodontics 2013
Frank Falkensammer Erwin Jonke Michael Bertl Josef Freudenthaler Hans Peter Bantleon

The objective of this study was to investigate the rebonding effect of a new silane coupling agent on various ceramic brackets bonded to ceramic specimen. Different ceramic brackets (Fascination 2, Clarity SL, and In-OvationC) were assigned to three groups: rebonding with new silane coupling agent, rebonding with conventional silane coupling agent, or regular bonding as control (n = 16). Bracke...

Journal: :Journal of physics 2023

Abstract By differentiating titanium carbide (TiC) tool and cemented uncoated during the CNC machining of LDX 2101 steel, this experimental approach aims to diminish surface roughness (SR). The control group comprised inserts while featured TiC inserts. These drilling parameters were speed cutting, rate feed, cut depth. number groups was 2, there 27 samples used for each in trials. standard SR ...

Journal: :Clinical orthopaedics and related research 2012
Manny Porat Javad Parvizi Peter F Sharkey Keith R Berend Adolph V Lombardi Robert L Barrack

BACKGROUND Few large series of hard bearing surfaces have reported on reasons for early failure. A number of unique mechanisms of failure, including fracture, squeaking, and adverse tissue reactions, have been reported with these hard bearing surfaces. However, the incidence varies among the published studies. QUESTIONS/PURPOSES To confirm the incidences, we identified the etiologies of early...

Journal: :Dental materials : official publication of the Academy of Dental Materials 2015
Bjarni Elvar Pjetursson Irena Sailer Nikolay Alexandrovich Makarov Marcel Zwahlen Daniel Stefan Thoma

OBJECTIVE To assess the 5-year survival of metal-ceramic and all-ceramic tooth-supported fixed dental prostheses (FDPs) and to describe the incidence of biological, technical and esthetic complications. METHODS Medline (PubMed), Embase and Cochrane Central Register of Controlled Trials (CENTRAL) searches (2006-2013) were performed for clinical studies focusing on tooth-supported FDPs with a m...

2013
Claire L Williams Khaled Khalaf

OBJECTIVES To investigate the static frictional resistance at the bracket/archwire interface in two recently introduced bracket systems and compare them to conventional ceramic and conventional metal bracket systems. Three variables were considered including the bracket system, archwire type and archwire angulation. MATERIAL AND METHODS Four bracket systems were tested in vitro: Self ligating...

2010
T. Özel M. Sima B. Kaftanoglu

This paper presents investigations on turning Ti–6Al–4V alloy withmulti-layer coated inserts. Turning of Ti–6Al–4V using uncoated, TiAlN coated, and TiAlN + cBN coated single and multi-layer coated tungsten carbide inserts is conducted, forces and tool wear aremeasured. 3D finite elementmodelling is utilized to predict chip formation, forces, temperatures and tool wear on these inserts. Modifie...

ژورنال: مجله دندانپزشکی 2015
باویسی, مرضیه , جلالیان, عزت الله , رجایی, فاطمه , مقدم, نیلوفر , چراغی, رضوانه , کی خا, فرشته ,

  Background and Aims: Tooth crowning often leads to changes in periodontal index through changes in emergence profile zone. The purpose of this study was to compare the effect of metal-ceramic with that ofAll-Ceramic restorations on the plaque a accumulation.   Materials and Methods: In this clinical trial, we used 102 teeth covered with metal-ceramic and all-ceramic restorations. Before and a...

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