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Longitudinal dento-skeletal changes in UCLP patients following maxillary distraction osteogenesis using RED system
Eduardo Yugo Suzuki1, Nobuyoshi Motohashi, Kimie Ohyama
1Maxillofacial Orthognathics, Department of Maxillofacial Reconstruction and Function, Division of Maxillofacial/Neck Reconstruction, Graduate School, Tokyo Medical and Dental University, Tokyo, Japan. yugotmdu@hotmail.com
Journal of Medical and Dental Sciences
|May 13, 2004
Summary
Maxillary distraction osteogenesis in unilateral cleft lip and palate (UCLP) patients shows significant skeletal changes, with relapse occurring early post-surgery. Careful consideration of dental and skeletal factors is crucial for successful outcomes.
Area of Science:
- Orthodontics
- Craniofacial Surgery
- Genetics
Background:
- Unilateral cleft lip and palate (UCLP) often presents with midface hypoplasia.
- Maxillary distraction osteogenesis is a surgical technique to correct such deformities.
Purpose of the Study:
- To analyze longitudinal dento-skeletal changes after maxillary distraction in UCLP patients.
- To identify factors influencing relapse after the procedure.
Main Methods:
- Retrospective analysis of lateral cephalograms from 12 Japanese UCLP patients.
- Data collected at four time points: pre-osteotomy, immediately post-distraction, and 6 and 12 months post-osteotomy.
- Statistical analyses included paired t-tests, Pearson correlation, and stepwise linear regression.
Main Results:
- Maxillary advancement led to nasal bone advancement, mandibular rotation, and dental changes.
- Maxillary dental changes correlated with mandibular rotation and traction force.
- Significant dento-skeletal relapse occurred between 0-6 months post-osteotomy, with less relapse between 6-12 months.
Conclusions:
- Maxillary distraction osteogenesis induces significant skeletal and dental alterations in UCLP patients.
- Early post-operative relapse is notable, influenced by advancement magnitude and initial hypoplasia severity.
- Optimal clinical outcomes necessitate careful management of surrounding dento-skeletal dynamics and traction forces.