An easily removable ceramic bracket?
The use of ceramic brackets in fixed appliance orthodontics has highlighted several problems, amongst which are the problems of enamel damage and possible trauma to the patient during debonding. A ceramic bracket has recently been developed with a polycarbonate laminated base (Ceramaflex) claiming to make debond much easier, although there are no independent data to substantiate this claim. The in-vitro bond strength of these ceramic brackets to enamel was tested and compared with metal standard Edgewise brackets. The bond produced with the Ceramaflex bracket was similar in magnitude, but less reliable. No fracture of the bracket or damage to enamel was seen during debonding. Debonding of these brackets was easy to carry out, but it is possible that more debonds may occur during treatment than with the use of metal brackets.
Fox
N A
NA
Department of Child Dental Health, Newcastle Dental School, Newcastle Upon Tyne.
McCabe
J F
JF
D000269:Adhesives / Q000737:chemistry; D002516:Ceramics / Q000737:chemistry*; D003722:Dental Alloys / Q000737:chemistry; D001840:Dental Bonding / Q000379:methods; D017005:Dental Debonding / Q000379:methods; D003743:Dental Enamel / Q000648:ultrastructure; D003799:Dental Stress Analysis; D006801:Humans; D008422:Materials Testing; D016382:Orthodontic Appliance Design; D016910:Orthodontic Brackets; D010968:Plasticizers / Q000737:chemistry; D011076:Polycarboxylate Cement / Q000737:chemistry; D013314:Stress, Mechanical; D013499:Surface Properties
D000269:Adhesives; D003722:Dental Alloys; D010968:Plasticizers; D011076:Polycarboxylate Cement; C005506:polycarbonate