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Corticotomy-assisted retraction: an outcome assessment.

S Vijayashri Sakthi, B Vikraman, V R Shobana

¹Department of Orthodontics, Ragas Dental College and Hospital, Chennai, Tamil Nadu, India.

Indian Journal of Dental Research : Official Publication of Indian Society for Dental Research

|March 3, 2015

Summary

Corticotomy-assisted orthodontic retraction significantly speeds up tooth movement, achieving results twice as fast as conventional methods. This surgical approach also improves molar anchorage control during the treatment process.

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Area of Science:

Orthodontics
Oral and Maxillofacial Surgery

Background:

Assessing the efficiency and outcomes of corticotomy-assisted en-masse orthodontic retraction versus conventional en-masse retraction.
Evaluating treatment acceleration and anchorage control in orthodontic retraction procedures.

Purpose of the Study:

To compare the efficiency and treatment outcomes of corticotomy-assisted en-masse orthodontic retraction with standard en-masse retraction.
To determine the impact of corticotomy on the rate of tooth movement and anchorage loss.

Main Methods:

A study involved 40 adult patients with bimaxillary protrusion, divided into a study group (22 patients, corticotomy-assisted retraction) and a control group (18 patients, conventional retraction).
The rate of retraction and molar anchor loss were compared between the two groups over the treatment period.

Main Results:

The corticotomy group showed a significantly faster rate of space closure (1.8 mm/month in maxilla, 1.57 mm/month in mandible) compared to the control group (1.02 mm/month in maxilla, 0.87 mm/month in mandible).
Retraction accelerated in the first two months for the study group.
Molar anchor loss was less in the study group (0.6 mm) than in the control group (1.8 mm) over four months.

Conclusions:

Corticotomy-assisted orthodontic retraction is approximately twice as fast as conventional retraction.
The surgical intervention enhances the rate of tooth movement, particularly in the initial stages of retraction.
Improved molar anchorage control was observed in the corticotomy group compared to the control group.