نتایج جستجو برای: dental restorations

تعداد نتایج: 164489  

بحرالعلومی, زهرا, سلیمانی, علی اصغر, غفوری فرد, رویا,

Introduction: General anesthesia (GA) is a valuable option for too young children or those children with medically complex problems, who need vast dental treatment. Considering the high cost and potential risk of general anesthesia, it is important to select the most reliable techniques and materials to enhance success rate of dental treatment. Therefore, this study aimed to investigate the cli...

Journal: :Journal of the American Dental Association 2007
Mario Bernardo Henrique Luis Michael D Martin Brian G Leroux Tessa Rue Jorge Leitão Timothy A DeRouen

BACKGROUND Failure of dental restorations is a major concern in dental practice. Replacement of failed restorations constitutes the majority of operative work. Clinicians should be aware of the longevity of, and likely reasons for the failure of, direct posterior restorations. In a long-term, randomized clinical trial, the authors compared the longevity of amalgam and composite. SUBJECTS, METHO...

Journal: :Acta stomatologica Croatica 2015
Davor Špehar Marko Jakovac

Dental ceramics represents a major structural material in fixed prosthodontics. Increasing demands for esthetics led to development of new ceramic materials in order to eliminate the use of metal framework and for all ceramic restorations with mechanical properties to withstand high occlusal forces. Out of all the present ceramic materials, zirconium-ceramic has the best mechanical properties, ...

2012
Raquel Castillo-de Oyagüe Christopher Lynch Robert McConnell Nairn Wilson

OBJECTIVES In an area of esthetic dentistry such as posterior composites, in which new materials and techniques are being devolved continuously, it is important to confirm that dental students have a clear understanding of the basic principles of clinical application of this knowledge. Considering that the preparation of dental graduates in Spain may be of interest to competent dental authoriti...

The daily increase in Patientschr('39') demand for cosmetic treatments has led to dental restorations moving towards the use of all-ceramic materials. The development of all-ceramic restorations over the last decade has revolutionized aesthetic dentistry. Recent advances in ceramic manufacturing and processing methods have led to the evolutionary growth of all-ceramic materials with superior bi...

2010
Nelson R.F.A. Silva Irena Sailer Yu Zhang Paulo G. Coelho Petra C. Guess Anja Zembic Ralf J. Kohal

The positive results of the performance of zirconia for orthopedics devices have led the dental community to explore possible esthetical and mechanical outcomes using this material. However, questions regarding long-term results have opened strong and controversial discussions regarding the utilization of zirconia as a substitute for alloys for restorations and implants. This narrative review p...

Journal: :Journal of materials science. Materials in medicine 2007
M Huang R Wang V Thompson D Rekow W O Soboyejo

This paper considers the use of bioinspired functionally graded structures in the design of dental multi-layers that are more resistant to sub-surface crack nucleation. Unlike existing dental crown restorations that give rise to high stress concentration, the functionally graded layers (between crown materials and the joins that attach them to dentin) are shown to promote significant reductions...

Journal: :Practical procedures & aesthetic dentistry : PPAD 2008
Stephen J Chu Mark N Hochman

Although human dental anatomy is taught in university curricula, clinicians often witness restorations that are not proportional to one another. Dental restorations should also be proportional to periodontal supporting tissues as an essential aspect of dental anatomy. Measurements can be performed directly on a patient's teeth with aesthetic gauges used to confirm the correct position of the su...

2009
David W. H. Chin Nathaniel Treister Bernard Friedland Robert A. Cormack Roy B. Tishler G. Mike Makrigiorgos Laurence E. Court

Dental restorations, fixed prosthodontics, and implants affect dose distribution in head and neck radiation therapy due to the high atomic number of the materials utilized. The backscatter of electrons from metallic materials due to the impinging treatment x-ray results in localized dose enhancements. These dose enhancements cause localized mucositis in patients who have dental work, a signific...

2011
Marília Oliveira Barbosa Adriana Fernandes da Silva Rodrigo Varella de Carvalho Sandra Beatriz Chaves Tarquinio Flávio Fernando Demarco

Purpose: Dental amalgam has been used as a dental restoration for more than 165 years. However, some patients with these restorations may present oral lichenoid lesions (OLL). OLL are chronic oral mucosal contact reactions to dental amalgam. Their diagnosis usually is based on the direct contact of the affected mucosa with the amalgam restorations, clinical appearance, and lack of migrations. A...

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