نتایج جستجو برای: cavity preparation
تعداد نتایج: 252365 فیلتر نتایج به سال:
Fighting the controversies, amalgam, as a posterior restorative material has survived till date. The fate of amalgam restoration is determined by geometry of the cavity preparation and cavosurface angle is one integral part of the cavity, which decides the marginal characteristics of the restoration and health of the tooth. Low edge strength of amalgam highlights the importance of cavosurface a...
We present in this paper an analysis of the damage imposed by atom field state inside a lossy superconducting cavity. To access such effects, we propose two procedures to preserve qubit from decay effects imperfect quantum memory: first means quasi-instantaneous phase kick applied and second controlled resonant dispersive interactions. immediately demonstrate that, both procedures, dwell time c...
Restoration of endodontically treated teeth is one the major challenges faced in field operative dentistry. In tooth, most part tooth structure lost because dental caries, conventional access cavity preparation and biomechanical during root canal therapy. They become very weak brittle also more prone to fracture compared vital
A status report of the superconducting RF photo electron injector development at Forschungszentrum DresdenRossendorf (FZD) is given. The SRF gun project is a collaboration of BESSY, DESY, MBI and FZD and aims at the installation of a high average current CW photo injector at the ELBE superconducting electron linac. Main design parameters of the SRF gun are an electron energy of 9.5 MeV, a maxim...
Accelerating gradients in SRF cavities have consistently been increasing in recent years, largely due to better surface preparation techniques. This makes the critical magnetic eld, at which the cavity loses its superconductivity, a very important limit to address. We worked to minimize the peak magnetic eld Hpk on the surface of the cavity with respect to the acceleration rate Eacc. Allowing t...
iatrogenic perforation of the furcation area in multi-rooted molars during preparation of the access cavity can potentially lead to tooth extraction. the present case report describes the nonsurgical endodontic management of an extensive pulp chamber floor perforation in a first mandibular molar with calcium enriched mixture (cem) cement. the perforation was chemically cleaned and then physical...
the application of laser in dentistry is considered as a favorable technique for patients due to its many advantages compare to other current methods. one of the main goals in pediatric dentistry is to provide the treatment as comfortable as possible without any risks for the care. laser is being used in different pediatric dental conditions including caries detection, caries removal and cavity...
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