The role of sandblasting on the retention of metallic brackets applied with glass ionomer cement.
A laboratory investigation of the shear bond strength of stainless steel brackets applied with glass ionomer cement (Ketac-Cem) and a conventional adhesive (Right-on) is described. Sandblasting of the bracket base was undertaken in half of the sample bonded with Ketac-Cem and produced a significant reduction in the probability of failure relative to the unsandblasted sample. Brackets with sandblasted and unsandblasted bases, bonded with Ketac-Cem were subjected to mechanical fatigue in a ball mill for a total of 20 hours. Mean survival time (MST) was then calculated for each group and was found to be significantly improved by sandblasting of the bracket base (P < 0.01).
Department of Child Dental Health, Dental School, Newcastle upon Tyne.
D
D
Millett
J F
JF
McCabe
P H
PH
Gordon
D000269:Adhesives / Q000737:chemistry; D000293:Adolescent; D003188:Composite Resins / Q000737:chemistry; D001840:Dental Bonding; D003743:Dental Enamel / Q000648:ultrastructure; D003799:Dental Stress Analysis; D017220:Dentin-Bonding Agents / Q000737:chemistry; D004868:Equipment Failure; D005899:Glass Ionomer Cements / Q000737:chemistry*; D006801:Humans; D008277:Magnesium Oxide / Q000737:chemistry; D008422:Materials Testing; D008855:Microscopy, Electron, Scanning; D016910:Orthodontic Brackets; D010865:Pilot Projects; D011076:Polycarboxylate Cement / Q000737:chemistry; D019279:Resin Cements; D013193:Stainless Steel / Q000737:chemistry*; D013314:Stress, Mechanical; D013499:Surface Properties; D013997:Time Factors; D015034:Zinc Oxide / Q000737:chemistry
D000269:Adhesives; D003188:Composite Resins; D017220:Dentin-Bonding Agents; D005899:Glass Ionomer Cements; D011076:Polycarboxylate Cement; D019279:Resin Cements; C071164:Right-On cement; D013193:Stainless Steel; D008277:Magnesium Oxide; C040235:Ketac-cem; D015034:Zinc Oxide