Results 141 to 150 of about 2,646,104 (204)

Effect of Acid Spending on Etching and Acid-Fracture Conductivity

open access: yesSPE Production & Operations, 2010
Summary In acid fracturing, while the near-wellbore area of the fracture receives live, unspent acid, sections of the fracture farther down the length receive partially spent acid because of the acid's reaction with the rock. As a result, there is a distribution of acid concentration along the fracture length.
M. Pournik   +3 more
openaire   +2 more sources

Variations in acid-etch patterns with different acids and etch times

American Journal of Orthodontics and Dentofacial Orthopedics, 2001
Research has shown that mandibular premolars have the highest rate of orthodontic bracket bond failure. Bond strength is thought to depend on the quality and quantity of enamel etch produced by the acid. Phosphoric acid is the most commonly used acid for etching before bonding.
Gardner A, Hobson R
openaire   +3 more sources

The Acid-Etched Fixed Prosthesis

The Journal of the American Dental Association, 1982
Acid-etched composite resins can be used to retain a cast fixed prosthesis. Such a prosthesis will be functional, esthetic, reversible, and economical.
L, Yanover, W, Croft, F, Pulver
openaire   +2 more sources

Pyruvic acid as an etching agent

Journal of Oral Rehabilitation, 1976
SummaryPhosphoric acid at different concentrations has been extensively used as an etching agent to improve bonding of dental materials to enamel surfaces. Recently attention has been drawn to the possible use of polyfunctional organic acids as conditioning agents.The object of this investigation was to determine the optimal concentration of pyruvic ...
D H, Retief   +2 more
openaire   +2 more sources

Self-Etching Primers – an Alternative to the Conventional Acid Etch Technique?

Journal of Orofacial Orthopedics / Fortschritte der Kieferorthopädie, 2001
The aim of the present in vitro study was to evaluate the bonding capacity of three self-etching primers (Clearfil SE Bond [SE], Clearfil Liner Bond 2V [CLB], Novabond [NOVA]) to enamel. Two adhesive systems with a separate phosphoric acid etching procedure (Gluma Comfort Bond [GLU], Kurasper F [KU]) served as controls.
U B, Fritz, P, Diedrich, W J, Finger
openaire   +2 more sources

The continuous brushing acid-etch technique

The Journal of Prosthetic Dentistry, 1987
The continuous brushing of an acid-etching agent onto the enamel surface of an extracted tooth resulted in a more debris-free surface. SEM photomicrographs showed dissolution of some of the apatite crystals and a reduction in size of the remaining crystals, thus increasing the potential space between them for retention of unfilled composite.
H, Baharav   +3 more
openaire   +2 more sources

Acid‐etching of enamel cavity walls

Australian Dental Journal, 1984
Abstract— The acid‐etched patterns produced on enamel cavity walls and the enamel tooth surface were investigated and the implications of these patterns on cavity preparation for composite resin restorations are discussed.The predominant pattern on enamel cavity walls is of obliquely and longitudinally sectioned prisms.
F E, Martin, R W, Bryant
openaire   +2 more sources

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