Maxillary distraction osteogenesis in cleft lip and palate cases with midface hypoplasia using rigid external distractor: an alternative technique.
BACKGROUND
Patients with operated cleft lip and palate present with a problem of midface hypoplasia, and such patients have been traditionally treated with orthognathic surgery. Such a procedure has its own limitations of relapse and hence a newer modality of distraction osteogenesis with histiogenesis can be chosen to overcome such limitations for midfacial advancement. The purpose of this study is to evaluate an alternative technique and its postoperative stability in maxillary distraction osteogenesis in patients of cleft lip and cleft palate using a rigid external device (RED).


METHODS
Nine patients with midface bone stock deficiency were selected for maxillary advancement. At the first surgery under general anesthesia, after Le Fort I osteotomy, RED system was used with the alternative technique. After distraction, evaluation was done for ease of the procedure, stability, and complications. Lateral cephalograms were evaluated at 3 stages: T1, pre-distraction; T2, post-distraction; and T3, 1 year post-distraction.


RESULTS
A mean 13.4-mm midface advancement was shown with bone formation at the pterygomaxillary region without losing the vector and having a standby mode in case the wire broke during distraction The results were stable even at 1 year of follow-up.


CONCLUSIONS
Maxillary position improved in relation to the cranial base. This study showed that the RED was versatile in midface advancement.
From the Army Dental Centre, Research and Referral Hospital, New Delhi, India.
Gaurav
G
Dua
Andrews
A
Navin Kumar
Indranil Deb
ID
Roy
Supriyo Kumar
SK
Roy
D000293:Adolescent; D002508:Cephalometry / Q000379:methods; D002971:Cleft Lip / Q000601:surgery*; D002972:Cleft Palate / Q000601:surgery*; D016267:External Fixators; D005115:Extraoral Traction Appliances; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008046:Lip / Q000473:pathology; D008297:Male; D008334:Mandible / Q000473:pathology; D008437:Maxilla / Q000002:abnormalities / Q000473:pathology / Q000601:surgery*; D009666:Nose / Q000473:pathology; D009971:Orthodontics, Corrective; D010012:Osteogenesis / Q000502:physiology; D019857:Osteogenesis, Distraction / Q000295:instrumentation / Q000379:methods*; D019340:Osteotomy, Le Fort / Q000379:methods; D056739:Pterygopalatine Fossa / Q000502:physiology; D012189:Retrospective Studies; D016896:Treatment Outcome; D055815:Young Adult