Results 211 to 220 of about 1,016,919 (267)

An Erosion Test for Dental Cements

Journal of Dental Research, 1985
A new method for the in vitro measurement of the erosion of dental cements is described which allows repeated, gentle removal of loose surface debris and provides a direct quantitative measurement of material lost. A linear relationship for erosion against time is demonstrated for a glass polyalkenoate material under mildly acidic conditions.
A W, Walls, J F, McCabe, J J, Murray
openaire   +2 more sources

The flow properties of dental cements

Journal of Biomedical Materials Research, 1980
AbstractThe flow properties of several major types of dental cements were investigated using slow compressive strength and creep techniques. Considerable differences were found in their behavior. Whereas the phosphate‐bonded and glass‐ionomer cements exhibited brittle fracture, the other cements tended to distort to a greater or lesser extent under ...
A D, Wilson, B G, Lewis
openaire   +2 more sources

Thermal diffusivity of dental cements*

Australian Dental Journal, 1986
AbstractA transient method for measuring the thermal diffusivity of disc‐shaped specimens of dental cements is presented.
O, Baffa, J, Mielnik, H, Panzeri, D, Vinha   +3 more
openaire   +2 more sources

Formation of Dental Silicate Cement

Nature, 1970
THE setting of dental silicate cement, a material widely used as an anterior tooth filling1, is generally attributed to the formation of silica gel2. Its potentially high strength (< 3,000 kg/cm2) compared with known silica gel cements3 (150–270 kg/cm2) is, however, at variance with this view.
A D, Wilson, B E, Kent, R J, Mesley, R P, Miller, D, Clinton, K E, Fletcher   +5 more
openaire   +2 more sources

The tableting of dental cement powders

Journal of Dentistry, 1975
Abstract Preproportioned quantities of dental cement powders may be useful in obtaining correct powder: liquid ratios. Some dental cement powders have been investigated with regard to the feasibility of converting them into tablets to achieve this aim.
J T, Fell, E C, Combe
openaire   +2 more sources

The properties of four dental cements

Australian Dental Journal, 1975
Abstract— Tests on 4 cements showed no significant difference in the retentive property of zinc phosphate and polycarboxylate cements but significant differences existed between these and two zinc oxide eugenol (modified) materials. Polycarboxylate cement was the only material which fractured partially or wholly within the cement film and the zinc ...
openaire   +3 more sources

Early erosion of dental cements

European Journal of Oral Sciences, 1984
Abstract –The disintegration in water of various unset glass ionomer cements, a polycarboxylate and a zinc phosphate cement was measured gravimetrically after exposure of the cements to a constant water jet. The test gave reproducible results with significant variations between the various types and brands of cements.
openaire   +2 more sources

Medical and dental applications of cements

Journal of Biomedical Materials Research, 1971
AbstractA number of cements based upon polymeric systems are being utilized in both medical and dental fields. The polymethyl methacrylate rapid polymerizing monomerpolymer materials have undergone extensive development as dental materials and are used widely also for rentention of orthopedic prostheses.
openaire   +2 more sources

Evaluation of Water Sorption and Solubility of Different Dental Cements at Different Time Interval

, 2020
Raghad S. Jamel
semanticscholar   +1 more source

Dental cements: a comparison of properties

The Journal of the American Dental Association, 1963
An analysis of various types of dental cements from the standpoint of minimiz­ ing patient discomfort indicates that zinc oxide-eugenol cement is decidedly su­ perior. Although the solubility of this cement is low and its initial*adaptation to the cavity walls unusually good, its low strength and lack of resistance to abra­ sion confine its use to ...
openaire   +2 more sources