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Radiographic Evidence of Dental Complications after Mandibular Distraction Osteogenesis: Inverted-L versus Oblique
Carlos E Barrero1, Isabel A Ryan2, Lauren Salinero1
1From the Division of Plastic, Reconstructive, and Oral Surgery, Children's Hospital of Philadelphia.
Plastic and Reconstructive Surgery
|August 10, 2023
Summary
The inverted-L osteotomy pattern in mandibular distraction osteogenesis (MDO) is linked to fewer dental complications than the oblique pattern. This finding aids surgeons in planning MDO procedures for patients with micrognathia.
Area of Science:
- Oral and Maxillofacial Surgery
- Orthodontics
- Pediatric Dentistry
Background:
- Mandibular distraction osteogenesis (MDO) is used to treat micrognathia, but carries risks of dental complications.
- Osteotomy patterns, specifically oblique and inverted-L, may influence these risks.
Purpose of the Study:
- To compare the risk of dental complications associated with oblique versus inverted-L osteotomy patterns in patients undergoing MDO.
- To identify which osteotomy pattern is safer for developing dentition.
Main Methods:
- Retrospective review of dental radiographs from patients who underwent MDO with either oblique or inverted-L osteotomies.
- Assessment for missing, damaged, or displaced teeth.
- Statistical comparison of dental injury rates and severity between the two osteotomy groups.
Main Results:
- The oblique osteotomy pattern was significantly associated with higher odds of missing teeth (OR 13.3) and damaged teeth (OR 3.2) compared to the inverted-L pattern.
- Patients with oblique osteotomies had a greater number of missing, damaged, and total affected teeth per hemimandible.
- No significant difference was found in the incidence or number of displaced teeth between the groups.
Conclusions:
- Inverted-L osteotomies demonstrate a lower risk of dental complications compared to oblique osteotomies in MDO.
- These findings provide valuable information for surgeons planning MDO procedures, though further prospective studies are warranted.
