This study compares two common ways of straightening teeth in adults who have mild-to-moderate crowding of the lower front teeth and do not need any teeth removed: clear aligners and traditional fixed braces.
The main aim is to find out whether the two methods differ in how they affect the bone that surrounds the teeth. Using three-dimensional X-ray scans (cone-beam CT) and digital models of the teeth taken before and during treatment, the researchers measure the level and thickness of the bone around the lower front teeth, the tilt (inclination) of the lower front teeth, and how quickly the crowding is corrected.
Adults are randomly assigned to receive either clear aligners or fixed braces, and the same measurements are compared between the two groups over about six months.
Inclusion Criteria:
Exclusion Criteria:
Participants and care providers cannot be masked because the two appliances are visibly different. All CBCT and digital-model measurements are performed by independent outcome assessors blinded to group allocation, and the statistician analyses coded data.
Conventional pre-adjusted edgewise fixed appliance (0.022-inch slot, MBT prescription) bonded from first molar to first molar; levelling and alignment with a sequence of nickel-titanium and stainless-steel archwires over approximately six months.
Three-dimensionally printed, thermoformed clear aligners with bonded attachments and interproximal reduction as indicated; worn \~22 hours/day and changed per the digital staging, with clinical review every four weeks over approximately six months
Cairo, 11865, Egypt
Evaluation of Dentoalveolar Changes of Clear Aligners Versus Fixed Orthodontic Appliances on Skeletal Class I Non-extraction Patients With Dental Crowding
Treatment Outcome of Clear Aligner and Traditional Fixed Appliances in Four Premolar Extraction Cases
Efficiency, Efficacy, Periodontal & Occlusal Outcomes for Aligners Versus Fixed Orthodontic Appliances in Crowded Incisor Treatment
Root Resorption Accompanied Clear Aligners and Fixed Orthodontic Appliance
3D Evaluation of Clear Aligners Versus Fixed Orthodontic Treatment of Lower Anterior Crowding
Comparison Between Clear Aligners and Traditional Fixed Appliances in the Treatment of Four-premolar-extraction Cases
Comparing Labial and Lingual Orthodontic Appliances on Root Resorption and Bone Height
Effects of Micro-osteoperforations on Lower Anterior Crowding Using Clear Aligners