Comparing Three Types of Bonded Retainers for Lower Front Teeth After Orthodontic Treatment with 5-Year Follow-Up

What this Trial Is About

This research aims to evaluate and compare the effectiveness, failure rates, and complications of three types of bonded retainers used to maintain the corrected position of lower front teeth after orthodontic treatment. The study focuses on patients who have completed orthodontic treatment with fixed appliances and require a mandibular lingual fixed canine-to-canine retainer. Since retention is crucial to prevent teeth from moving back to their original position, this trial compares traditional and newer retainer types to provide more reliable data on long-term stability and cost-effectiveness. Participants are randomly assigned to one of three groups the Penta-One multistranded wire, the Ortho-FlexTech stainless steel chain, or the Memotain CADCAM fabricated nickel-titanium wire. Half of the patients in each group will have their teeth treated with sandblasting before bonding, while the other half will not. The bonding procedures involve cleaning and preparing the teeth surfaces, applying primer and composite materials, and securing the retainers using precise techniques specific to each retainer type. Follow-up visits are scheduled at baseline, 6 months, 1 year, 2 years, and 5 years after debonding. During the study, participants will have digital impressions and intraoral photographs taken at each visit to assess tooth position and retainer condition. Researchers will monitor retainer failures such as debonding or breakage and record any complications like plaque, calculus, or gum inflammation. They will also analyze the costs associated with each retainer type and investigate whether sandblasting improves retainer durability. The primary outcome is the failure rate of each retainer over the observation period, with additional assessments of complications and cost-effectiveness conducted at 2 and 5 years.

Retention With Three Different Bonded Retainers a Multicenter, Randomized Controlled Trial With 5-year Follow-up