نتایج جستجو برای: dental impression material
تعداد نتایج: 524776 فیلتر نتایج به سال:
For an implant prosthesis to function permanently and well in the oral cavity, it is necessary to consider various biomechanical factors. 2 Esposito et al. reported that occlusion-induced overloads are associated with increased morbidity and poor durability of dental implants. In order to obtain appropriate occlusal contacts in prostheses, it is important to determine the reproducibility of occ...
BACKGROUND According to the UK Adult Dental Health Survey (2009) 15% of adults aged 65-74, 30% aged 75-84 and 47% aged >85 years are edentulous and require complete dentures. Patients' quality of life and nutrition status are affected by poor dentures. The quality of the dental impression is the most important issue for improving the fit and comfort of new dentures. There is paucity of RCT evid...
The sound produced by a dental air turbine handpiece (dental drill) can markedly influence the sound environment in a dental clinic. Indeed, many patients report that the sound of a dental drill elicits an unpleasant feeling. Although several manufacturers have attempted to reduce the sound pressure levels produced by dental drills during idling based on ISO 14457, the sound emitted by such dri...
Objectives: To assess the eff ect of pouring time on dimensional changes alginate impression material after disinfection.Materials and Methods: A total twenty impressions were made using material. The divided into four groups designated as A, B, C D. Group (control) poured with dental stone immediately rinsing tap water. In group B D applying disinfectant spray at 10mins 1hrdelay. Group-C one h...
In response to increasing patient awareness of esthetic dental rehabilitation, the preference today is for all-ceramic restorations, which show superior biocompatibility and similar light characteristics to the natural tooth. The fit of a dental restoration depends on quality throughout the entire manufacturing process. The final result is affected by multiple factors, such as preparation of th...
STATEMENT OF PROBLEM A new approach to both 3-dimensional (3D) trueness and precision is necessary to assess the accuracy of intraoral digital impressions and compare them to conventionally acquired impressions. PURPOSE The purpose of this in vitro study was to evaluate whether a new reference scanner is capable of measuring conventional and digital intraoral complete-arch impressions for 3D ...
Dental portraits are predominantly used for orthodontics, orthognathic surgery and prosthetic dentistry. If these images are to be used for documentation, then the patient must be positioned in accordance with strict guidelines for further references. If the images are to be used to present an aesthetic impression of dental treatment there is more flexibility in positioning the patient. Dental ...
INTRODUCTION A dental impression is a negative imprint of an oral structure that can be used to produce a positive cast of a patient's teeth as a permanent record. The accuracy of the impression affects the accuracy of the cast, and a precise impression is needed in order to create prosthesis with optimal fitting. Minimization of misfit is an important aim in prosthesis science and dental impla...
background and aim: an important criterion for success assessment of implant-supported prostheses is marginal fit. vertical and horizontal discrepancy can result in loosening of the prosthetic screw, crestal bone resorption, peri-implantitis and loss of osseointegration. despite careful attention to waxing, investing, and casting, marginal discrepancies are inevitable. the aim of this study was...
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