Clinical Research Directory

Segmented Indirect Versus Direct Bracket Bonding

This randomized clinical trial compared two methods of attaching orthodontic brackets to teeth: conventional direct bonding, in which each bracket is placed and bonded individually in the mouth, and a segmented modified indirect bonding technique, in which brackets are first positioned on a plaster model of the patient's teeth and then transferred to the mouth in segments using a hot-glue transfer tray. The purpose was to find out whether the two techniques differ in how often brackets come loose (bond failure) during treatment. Eighteen patients receiving fixed orthodontic appliances at Riyadh Elm University, Riyadh, Saudi Arabia, were randomly assigned so that their brackets were placed by either the direct or the modified indirect technique. The same bracket type and adhesive were used in both groups. Patients were examined every four weeks for six months, and any bracket that debonded was recorded along with the tooth involved, the arch (upper or lower), the side (right or left), and the time from bonding to failure. The main outcome was the time from bonding to bracket failure; the investigators also compared failure rates and examined whether failure varied by tooth type, arch, or side.

Comparison of Orthodontic Bracket Bond Failure Using Acid Etching With or Without Sandblasting

The goal of this clinical trial is to assess if sandblasting before acid etching reduce orthodontic bracket bond failure in fixed orthodontic treatment. The main question it aims to answer is: • What are the differences in bracket bond failure rate between acid etching with or without sandblasting method for the preparation of enamel? Researchers will compare acid etching with sandblasting method to acid etching without sandblasting method for enamel preparation to see if sandblasting prior to acid etching reduce bracket bond failure rate. Participants will: * Receive sandblasting of enamel before acid etching on one side of the mouth and only acid etching on the contralateral side for enamel preparation. * Participants would visit at the the OPD of Hospital at 3 weeks interval for follow up and for a total duration of 4 months to assess the changes. The number of bracket bond dislodgements at each session will be recorded .