Summary trial/Orthodontics
Evidence-Based Dentistry (2007) 8, 105. doi:10.1038/sj.ebd.6400524
Bond or band?
Is there a difference in clinical failure rates between bonded and banded first molar attachments during fixed appliance therapy?
Address for correspondence: Philip Banks, Orthodontics Department, Burnley General Hospital, Casterton Avenue, Burnley, Lancashire BB10 2PQ, UK. E-mail: philbanks_burnly@yahoo.com
Anmol Kalha1
1Department of Orthodontics and Dentofacial Orthopaedics, College of Dental Sciences, Davangere, Karnataka, India
Banks P, Macfarlane TV. Bonded versus banded first molar attachments: a randomized controlled clinical trial. J Orthod 2007; 34:128–136
Abstract
Design
This was a prospective randomised controlled clinical trial (RCT).
Intervention
The experimental group received single first molar tubes bonded with a no-mix chemically cured composite (Rely-a-Bond; Reliance, Itasca, Illinois, USA) after a 30-second etch. The control group participants were treated with bands cemented with glass ionomer cement (Intact; Ortho-Care, Bradford, West Yorkshire, UK).
Outcome measure
The primary outcome was first-time attachment failure (tooth level) and the secondary outcome was number of first-time failures per patient (patient level).
Results
There were 18.8% first-time failures in the band group compared with 33.7 % in the bonded group. Bonds had a relative risk of failure of 2.4 (95% confidence interval, 1.4–4.1) compared with bands. There was no difference in failure rates between maxillary and mandibular teeth, or between left and right sides. 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 glass-ionomer cement.
