Results 171 to 180 of about 103,981 (215)

Direct bonding of orthodontic brackets

American Journal of Orthodontics, 1976
The direct adhesive bonding of orthodontic brackets to enamel was investigated. For a number of resin systems, all based on a bisphenol-GMA type of resin, commercially available or synthesized, the adhesive bonding to the enamel as well as to the bracket was studied. The maximum average bond strength to enamel was 121 Kg.
Keizer, S., ten Cate, J.M., Arends, J.
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Torsional creep of polycarbonate orthodontic brackets

Dental Materials, 1997
Polycarbonate materials are known to exhibit creep. The purpose of this study was to investigate torsional creep of polycarbonate orthodontic brackets.Four polycarbonate, one metal, and one ceramic brackets were tested. An in vitro torque apparatus was constructed which applied 2000 g-mm of torque to the bracket slot via a cantilever beam perpendicular
R G, Alkire, M D, Bagby, M A, Gladwin, H, Kim   +3 more
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Bond strength of rebonded orthodontic brackets

American Journal of Orthodontics and Dentofacial Orthopedics, 1996
A study was undertaken to determine the bond strength of brackets rebonded with a no-mix resin system or a paste-paste resin system. The efficacy of plastic conditioner and Enhance adhesion booster (Reliance Orthodontic Products, Inc., Itasca, Ill.) as an aid in rebonding was also evaluated.
F R, Egan, S A, Alexander, G E, Cartwright   +2 more
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Numerical investigation of fixed orthodontic brackets

Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine, 2000
This paper presents the results of investigations into the mechanical behaviour of fixed orthodontic brackets. Special attention has been paid to the detailed modelling of the interface between the bracket base and an adhesive by which attachment is made to the tooth surface.
J, Middleton, P, Hübsch, B, Kralj, J, Knox, M L, Jones   +4 more
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Material testing of reconditioned orthodontic brackets

Journal of Orofacial Orthopedics / Fortschritte der Kieferorthopädie, 2012
While all manufacturers of orthodontic brackets label these products for single use, there are commercial providers offering bracket reconditioning (or "recycling"). We conducted this study to investigate the effects of different recycling techniques on material-related parameters in orthodontic brackets, aiming to derive indications for clinical use ...
S, Reimann, A, Rewari, L, Keilig, F, Widu, A, Jäger, C, Bourauel   +5 more
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Adherence of Streptococcus mutans to orthodontic brackets

American Journal of Orthodontics and Dentofacial Orthopedics, 1998
The affinity of Streptococcus mutans to orthodontic brackets made from metal, plastic, and ceramic was tested. Twelve saliva-coated brackets and 12 noncoated brackets of each type were immersed in a S. mutans solution labeled with [3H] thymidine. Each sample was then immersed in distilled water at 20 degrees C for 24, 48, and 72 hours to measure the ...
A, Fournier, L, Payant, R, Bouclin
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Retention capacity of the bracket bases of new esthetic orthodontic brackets

American Journal of Orthodontics and Dentofacial Orthopedics, 1995
Tensile bond strength and bond failure locations were evaluated in vitro for three types of direct bonding cements (self-cured diacrylate, dual-cured diacrylate, and dual-cured glass ionomer) with four types of brackets (stainless steel, polycarbonate, ceramic, and ceramic-polycarbonate) by using a plastic cylinder as the substrate.
K A, Blalock, J M, Powers
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Orthodontic Treatment with Lingually Bonded Brackets

British Journal of Orthodontics, 1984
The direct bonding of orthodontic brackets to enamel has greatly improved the aesthetics of fixed appliance orthodontics. A recent development has been the lingual placement of the attachments Which has resulted in none of the mechanics being visible on the anterior teeth.
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Corrosion of resin-bonded orthodontic brackets

American Journal of Orthodontics, 1982
The objective was to identify the nature and origin of indelible black and green stains found in enamel after the removal of bonded orthodontic brackets. Several brackets were examined by scanning electron microscopy and energy-dispersive x-ray analysis. Irrespective of the type of bracket or resin, morphologic evidence of corrosion activity was found.
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Aesthetic orthodontic brackets.

Journal of orthodontics, 2005
Due to an increasing demand for superior aesthetics during fixed appliance treatment, the use of aesthetic brackets has grown in popularity over recent years. Although often requested by patients, aesthetic brackets are not without their disadvantages.
openaire   +1 more source