Mandibular changes during initial alignment with SmartClip self-ligating and conventional brackets: A single-center...

Area of Science:

• Orthodontics
• Dental Materials Science

Background:

• Conventional brackets are widely used for orthodontic alignment.
• Self-ligating brackets, such as SmartClip, are proposed to improve treatment efficiency.
• Limited comparative data exists on their effectiveness in initial mandibular alignment.

Purpose of the Study:

• To compare the effectiveness of SmartClip self-ligating brackets versus conventional Gemini brackets for initial mandibular alignment.
• To identify factors influencing the improvement of anterior irregularity.

Main Methods:

• Randomized controlled trial with 50 patients (25 per group: SmartClip vs. Gemini).
• Standardized archwire sequence used.
• Measurements included anterior irregularity index, intercanine and intermolar widths, and incisor inclination at 8 and 16 weeks.

Main Results:

• Data from 46 patients analyzed; 4 excluded due to missing appointments or bracket failure.
• Both bracket types showed significant increases in incisor inclination and intercanine width.
• No significant differences were found between SmartClip and conventional brackets for measured parameters.
• Initial anterior irregularity and intercanine width changes significantly predicted improvement in anterior irregularity.

Conclusions:

• The null hypothesis was rejected, indicating bracket type has minimal impact on initial mandibular alignment outcomes.
• Treatment effectiveness for anterior crowding is influenced more by initial patient factors than by bracket type.