نتایج جستجو برای: composite restorations

تعداد نتایج: 125659  

جولانی, محمد, زاجکانی, الهام, فقیه‌زاده, سقراط,

Background and Objective: Polymerization shrinkage in composite resins is responsible for microleakage restoration. A recently introduced composite resin Filtek P90 is based on siloxanes and oxiranes which polymerize by cationic "ring opening" polymerization resulting in reduced polymerization shrinkage. The aim of this study was comparative evaluation of microleakage in class II cavities resto...

Farahani, Abolfazl , Farahani, Hamid, Farahani, Mohammad Hossein, Shafiee, Hasan Ali,

Background and Objectives: Increased bacterial (streptococcal) biofilm aggregation on the surface of resin composite restorations in comparison with amalgam and glass ionomer restorations makes the composite restorations susceptible to secondary caries next to the restorations.  In this study, the anti-Streptococcus mutans properties of resin composites containing silver nanoparticles were inve...

2017
Thayla Hellen Nunes Gouveia Jéssica Dias Theobaldo Waldemir Francisco Vieira-Junior Débora Alves Nunes Leite Lima Flávio Henrique Baggio Aguiar

BACKGROUND In daily clinical practice, esthetics of anterior teeth is a common presenting complaint of patients. OBJECTIVE This case report discusses the management of asymmetric smile associated with unsatisfactory extensive composite restorations and describes a clinical protocol using the direct composite resin for smile enhancement to restore the dental harmony of anterior teeth. METHOD...

2017
Nivaasini Sivarajah

In general excellent results cannot be guaranteed when using resin-based composites for posterior restorations. This is due to polymerization shrinkage which can still be regarded as the primary negative characteristics of composites.Sevaral factors responsible for the polymerization shrinkage process may negatively affect the integrity of the resoration.The materials shrinkage is associated wi...

2005
R. G. CRAIG

Neutron activation analysis with dysprosium as a tracer was employed to determine quantitatively the microleakage around the restorations of an experimental hydrophobic composite, as well as a commercial composite. Only a negligible uptake of tracer was obtained for the experimental composite, whereas a five-fold uptake was recorded for the commercial composite. Capillary penetration of fluid a...

2017
Zuhal Yildirim Omer Yavuz Gomec

Use of direct composite and indirect laminate veneers has been an alternative to metal- and all-ceramic crowns for anterior teeth restorations. Dental traumas are the most common reasons for excessive tissue loss. Treatment options depend on the amount of remaining tissue, the extent of the damage to dental pulp and periapical tissues and the time elapsed before dental treatment. The aim of thi...

Journal: :razavi international journal of medicine 0
majid akbari associate professor, dental research center, department operative dentistry mashhad university of medical sciences, mashhad, iran hamideh ameri school of dentistry, mashhad university of medical sciences, mashhad, iran hasan jamali school of dentistry, mashhad university of medical sciences, mashhad, iran ali asghar gholami school of dentistry, mashhad university of medical sciences, mashhad, iran sara majidinia assistant professor, dental research center, department operative dentistry mashhad university of medical sciences, mashhad, iran; assistant professor, dental research center, department operative dentistry mashhad university of medical sciences, mashhad, iran. tel: +98-9155191341

conclusions the clinical success rates of endodontically treated premolars restored with fiber posts and direct composite restorations, direct composite restorations with cusp capping and simple direct composite restoration were perfect after one year of follow-up evaluation. background endodontically treated teeth need to be restored in a manner to provide protection for the remaining tooth st...

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