نتایج جستجو برای: marginal adaptation dentistry

تعداد نتایج: 200523  

2006
Dietrich Klakow

In this paper we address the issue of building language models for very small training sets by adapting existing corpora. In particular we investigate methods that combine task specific unigrams with longer range models trained on a background corpus. We propose a new method to adapt class models and show how fast marginal adaptation can be improved. Instead of estimating the adaptation unigram...

2014
Fotoula Nikolopoulou Michael Loukidis

The purpose of this comprehensive review was to evaluate and identify the performance of composite/ceramic onlays versus crowns. The strength of the evidence is based on published trials, systematic reviews and observational studies. Methods: The dental literature was reviewed for controlled clinical studies and retrospective cross-sectional studies from 1966 to 2013. Longevity of onlay or crow...

Journal: :Pediatric dentistry 2000
E Eidelman S Faibis B Peretz

PURPOSE There is no data in the dental literature concerning the quality of the restorations performed in young children with early childhood caries (ECC) under sedation as compared with those treated under general anesthesia (GA). The aim of this study was to compare the quality of restorations and recurrent caries in 65 children with ECC who had dental treatment under GA or sedation. METHOD...

2014
Syed Rashid Habib Waleed Asiri Mohammed Jameel Hefne

PURPOSE To compare the accuracy of marginal and internal adaptation of zirconia (Zr) copings fabricated on anatomic (A), semi-anatomic (SA) and non-anatomic (NA) occlusal surface preparations. MATERIALS AND METHODS 45 extracted bicuspid teeth were prepared for receiving zirconia crowns, with different occlusal preparation designs A=15, SA=15 & NA=15. The Zr copings were fabricated by using CA...

Journal: :CoRR 2017
Han Zhao Zhenyao Zhu Junjie Hu Adam Coates Geoffrey J. Gordon

We propose a probabilistic framework for domain adaptation that blends both generative and discriminative modeling in a principled way. Under this framework, generative and discriminative models correspond to specific choices of the prior over parameters. This provides us a very general way to interpolate between generative and discriminative extremes through different choices of priors. By max...

2014
Saravanapriyan Soundappan Jothi Latha Sundaramurthy Sandhya Raghu Velmurugan Natanasabapathy

OBJECTIVE The aim of this study was to evaluate the marginal adaptation of Biodentine in comparison with Mineral Trioxide Aggregate (MTA) and Intermediate Restorative Material (IRM), as a root end filling material, using Scanning Electron Microscopy (SEM). MATERIALS AND METHODS Thirty permanent maxillary central incisors were chemo-mechanically prepared and obturated. Three millimetres of the...

Journal: :The journal of contemporary dental practice 2013
Mateus Rodrigues Tonetto Matheus Coelho Bandéca Hélida Gomes de Oliveira Barud Shelon Cristina Souza Pinto Darlon Martins Lima Alvaro Henrique Borges Edson Alves de Campos Marcelo Ferrarezi de Andrade

The aim of this study was to investigate whether the artificial aging by thermal cycling had influenced the marginal adaptation of class V restorations with/without chlorhexidine application in the bond process. Twelve intact human third molars were used. Class V cavity preparations were performed on the buccal surface and the teeth received 35% phosphoric acid-etching procedure (Ultradent Prod...

2011
Motaz A. Ghulman

Aim. To investigate the effect of C factor on marginal adaptation of low-shrinking composite (Silorane).The null hypothesis was that the marginal adaptation of "Silorane" is not affected by the cavity configuration. Materials and Methods. A Silorane based and a methacrylate based composites, with their corresponding self-etch adhesive systems "Filtek Silorane/Silorane Adhesive Bond System and F...

Journal: :Acta odontologica latinoamericana : AOL 2012
Denise S Maia-Casseli André L Faria-e-Silva Andréa N Cavalcanti Eliene A O N Romani Luis R M Martins

The aim of this study was to evaluate the effect of light-curing units (LED or halogen) on the marginal adaptation of composite restorations performed with etch-and-rinse and self-etching adhesive. Class V cavities were prepared on bovine teeth with the gingival margin on dentin and the incisal margin on enamel. The cavities were restored with a micro-hybrid resin composite using an etch-and-ri...

Journal: :Acta of bioengineering and biomechanics 2012
Ivan N Sarcev Branislava S Petronijevic Teodor M Atanackovic

The objective of this study is to introduce a modified incremental technique that leads to improved marginal adaptation and to develop a mathematical model that explains the results obtained. The technique proposed is a two-step incremental technique that reduces volume of a resin that is polymerized at each step and eliminates the central point in resin, so that the stresses are additionally r...

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