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Horizontal Maxillary Osteotomy Stability Using Mandibular Outer Cortex Bone Grafts in Patients With Cleft Lip and
Yilue Zheng1, Ningbei Yin, Chanyuan Jiang
1Center of Cleft Lip and Palate, Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
The Journal of Craniofacial Surgery
|July 21, 2018
Summary
This study found that using mandibular outer cortex bone grafts in unilateral cleft lip and palate (UCLP) patients undergoing maxillary advancement did not improve surgical stability. Bone grafting did not significantly alter horizontal relapse rates in UCLP patients.
Area of Science:
- Plastic Surgery
- Orthognathic Surgery
- Craniofacial Surgery
Background:
- Unilateral cleft lip and palate (UCLP) often involves maxillary hypoplasia, requiring surgical correction.
- Maxillary advancement surgery, such as Le Fort I osteotomy, is used to address this deficiency.
- The stability of maxillary osteotomies can be influenced by various factors, including bone grafting techniques.
Purpose of the Study:
- To evaluate the impact of mandibular outer cortex bone grafts on the stability of horizontal maxillary osteotomy in UCLP patients.
- To compare the horizontal relapse rates between patients who received bone grafts and those who did not.
Main Methods:
- Retrospective cohort study involving 58 UCLP patients with maxillary hypoplasia.
- Patients underwent Le Fort I maxillary advancement (6-9 mm).
- Test group (n=28) received mandibular outer cortex bone grafts; control group (n=30) did not.
Main Results:
- Mean maxillary advancement was similar in both groups (7.13 mm in test group, 6.90 mm in control group).
- Mean horizontal relapse at 12 months was comparable: 25.07% in the test group and 24.89% in the control group.
- No statistically significant difference in horizontal relapse was observed between the groups.
Conclusions:
- Mandibular outer cortex bone grafting as a physical barrier does not enhance postoperative stability in UCLP patients undergoing maxillary advancement of 6-9 mm.
- The findings suggest that bone grafting in this context does not provide additional stability benefits.
- Further research may explore alternative grafting materials or techniques for improved outcomes.
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