Bonded versus banded first molar attachments: a randomized controlled clinical trial.
OBJECTIVE
To compare the clinical failure rates of bonded first molar tubes with those of cemented bands during fixed appliance therapy.


METHODS
Prospective randomized controlled clinical trial.


METHODS
Two UK hospital orthodontic clinics, February 2001-December 2004.


METHODS
Hospital waiting list patients needing fixed appliances (n = 110).


METHODS
Patients were randomly allocated to two groups. Experimental group patients (n = 55) received single first molar tubes (n = 181) bonded with a no-mix chemically cured composite (Rely-A-Bond) after a 30-second etch. Control group patients (n = 55) were treated with bands (n = 186) cemented with Intact glass ionomer cement (GIC). First-time failures were recorded together with the time of failure. All patients were followed to the end or discontinuation of treatment.


RESULTS
First-time failures: bands = 18.8%; bonds = 33.7 %. Bonded tubes were more likely to fail [RR 2.4; 95% CI (1.4, 4.1)] compared with bands. Experimental group patients also had more bracket failures (P = 0.009), when analysed at patient level.


CONCLUSIONS
First molar tubes bonded with Rely-A-Bond composite showed a significantly higher first-time failure rate than bands cemented with Intact GIC.
Banks
Philip
P
Burnley General Hospital, Casterton Avenue, Burnley, Lancashire BB10 2PQ, UK. philbanks_burnly@yahoo.com
Macfarlane
Tatiana V
TV
D000134:Acid Etching, Dental; D000293:Adolescent; D000328:Adult; D002484:Cementation; D002648:Child; D001840:Dental Bonding; D004868:Equipment Failure; D005260:Female; D005500:Follow-Up Studies; D005899:Glass Ionomer Cements / Q000737:chemistry; D006801:Humans; D008297:Male; D008963:Molar; D016382:Orthodontic Appliance Design; D009967:Orthodontic Appliances; D016910:Orthodontic Brackets; D009969:Orthodontic Wires; D011446:Prospective Studies; D019279:Resin Cements / Q000737:chemistry
D005899:Glass Ionomer Cements; C097531:Rely a Bond system; D019279:Resin Cements