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Endaural Endoscopic Atticoantrotomy Retrograde Mastoidectomy using a Constant Suction Bone-drilling Technique

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Does LeFort I Surgery Have Any Influence on External Root Resorption?

Ellen Kim¹, Ahmed A Alsulaiman², Michael J Gunson¹

¹Boston University, Henry M. Goldman School of Dental Medicine, Department of Orthodontics and Dentofacial Orthopedics, Boston, Massachusetts.

Turkish Journal of Orthodontics

|July 7, 2025

Summary

This summary is machine-generated.

Segmental LeFort I osteotomy causes root resorption in maxillary teeth. However, the increase in resorption is not significantly different from orthodontic treatment alone and is clinically insignificant.

Keywords:

CBCT LeFort I root resorption

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Area of Science:

Dentistry
Orthodontics
Oral and Maxillofacial Surgery

Background:

Segmental LeFort I osteotomy is a surgical procedure used in orthodontics to correct maxillary deformities.
Root resorption is a potential complication of orthodontic treatment and orthognathic surgery.

Purpose of the Study:

To evaluate the incidence and severity of root resorption in maxillary teeth adjacent to osteotomy sites following segmental LeFort I osteotomy.
To compare root resorption between patients undergoing segmental LeFort I osteotomy with orthodontic treatment and those undergoing orthodontic treatment alone.

Main Methods:

Cone-beam computed tomography (CBCT) scans of 18 surgical patients and 16 control subjects were analyzed at three time points (pre-surgery/treatment, post-surgery/treatment, and long-term follow-up).
Root volume, surface area, and length of maxillary central incisors, canines, and first molars were measured and analyzed using repeated measures ANOVA.
Statistical significance was set at p<0.05.

Main Results:

The surgical group exhibited a statistically significant increase in root resorption (length, volume, and surface area) over time.
No significant differences in root resorption were observed between the surgical and control groups, except for a few variables.

Conclusions:

Segmental LeFort I osteotomy combined with orthodontic treatment induces root resorption.
The observed root resorption differences between combined treatment and orthodontic treatment alone are not statistically significant or clinically significant.