Results 261 to 270 of about 56,113 (311)

Properties of Packable Dental Composites

Journal of Esthetic and Restorative Dentistry, 2000
ABSTRACTThe introduction of many new packable composites suggests that these products are rapidly gaining popularity. The purpose of this study was to evaluate the in vitro properties of a variety of packable composites and to determine if significant enhancements in physical and mechanical properties have been achieved for these materials compared ...
K K, Choi, J L, Ferracane, T J, Hilton, D, Charlton   +3 more
openaire   +2 more sources

Photopolymerization of dental composite matrices

Biomaterials, 1994
The kinetic behaviour of dental composite is traditionally studied, considering only the isothermal behaviour, whereas a fast and highly non-isothermal bulk polymerization is expected as a consequence of the significant heat developed due to the exothermic nature of the polymerization reaction.
MAFFEZZOLI, Alfonso, A. Della Pietra, S. Rengo, L. Nicolais, G. Valletta   +4 more
openaire   +4 more sources

Update on dental composite restorations

The Journal of the American Dental Association, 1994
The rapidly changing area of dental composites can confound practitioners if they ignore material selection and correct techniques. The complex steps involved in placing composite restorations are explained to avoid potential problems and ensure complete success.
S C, Bayne, H O, Heymann, E J, Swift
openaire   +2 more sources

Dental Composites: A Review.

The Journal of Nihon University School of Dentistry, 1993
Dental composite resins are widely used in dental practice and are continually being developed in order to obtain better products. To gain full benefit from these materials, it is important for the clinician to understand their properties. The following is a review of the more common characteristics of composites in current use.
openaire   +2 more sources

Storage Stability of Dental Composites

Journal of Dental Research, 1979
Composites made from powder-liquid constituents and subjected to elevated temperatures during storage are more stable than those employing pastes. The decomposition of the benzoyl peroxide ingredient is mainly responsible for the increased setting time and the decreased mechanical properties of the resulting composite.
G M, Brauer, N, Petrianyk, D J, Termini
openaire   +2 more sources

Nanoindentation of dental composites

Journal of Biomedical Materials Research Part B: Applied Biomaterials, 2005
AbstractThe intent of this project was to evaluate the elastic modulus and hardness of four composites with different fillers, a microfill, a hybrid, a dental resin cement, and a fiber filler, using nanoindentation. An indentation load of 0.001 N was used and 100 indents per specimen were taken. The elastic modulus measured for the Choice composite was
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Creep of posterior dental composites

Journal of Biomedical Materials Research, 1985
AbstractThe creep of microspecimens of posterior dental composites was studied using a torsional creep apparatus. Shear stresses were maintained for 3 h and recovery was followed for 50 h. Creep curves were obtained at 21, 37, and 50°C and four torque levels. The effect of conditioning the specimens in water up to 8 weeks was studied.
Y, Papadogianis, D B, Boyer, R S, Lakes
openaire   +2 more sources

Composite materials for dental implants

Oral Surgery, Oral Medicine, Oral Pathology, 1975
The requirements of endosteal dental implants are unique and stringent. The materials currently applied to implantation do not offer convincing evidence of satisfying these needs. This preliminary study reports on attempts at developing materials which would aid in obtaining a mucosal seal to maintain the integrity of the osseous, periosteal, and ...
A, Schulman, S J, Piliero, L, Pentel, W R, Ott, H D, Moskowitz   +4 more
openaire   +2 more sources

Dental Composite Resins

2012
Abstract This article discusses the composition of the major components of dental composite resins: organic resin matrix, filler, coupling agents, and initiator-accelerator systems. It describes the properties of composite resins that are related to the amount and type of filler and resin-matrix compositions.
openaire   +1 more source

Nanotechnology for dental composites

International Journal of Nanotechnology, 2004
In dentistry, composites consisting of inorganic fillers such as radiopaque glass, quartz or ceramic particles and an organic resin matrix based on a mixture of dimethacrylates, are used for the restoration of teeth. Important properties of the dental restorative materials can be improved by means of nanotechnology.
Norbert Moszner, Simone Klapdohr
openaire   +1 more source