Do clear aligners protect tooth bone better than braces? a head-to-head trial

This study compares two popular ways to straighten teeth in adults with mild-to-moderate crowding: clear aligners and traditional fixed braces. The main question is whether the two methods differ in how they affect the bone that surrounds the teeth. Using 3D X-ray scans and digital models, researchers measure bone level and thickness around the lower front teeth before and during treatment. Adults are randomly assigned to receive either clear aligners or braces, and the results are compared over about six months.