5175
Aida Mohamed Mostafa
Anterior Maxillary Segmental Distraction of Hypoplastic Maxilla Using Extraoral Versus Intraoral Bone Distractors
maxillary hypoplastic, distraction osleogenesis
This study was designed to compare the effect of anterior maxillary segmental distraction technique using extraoral bone distractor versus intra oral bone distractor for twelve non syndromic cleft lip and palate patients having hypoplastic maxilla divided into two groups. Group A had undergone the surgery using extraoral device while group B used intraoral device. The assessment was based on clinical examination which included (intraoral and extraoral photographs besides dental impressions) as well as radiographic examination including (digital panorama, lateral cephalometry and multi slice CT.) also a 3D model with the aid of the MIMICS software was constructed for presurgical planning and pre adaptation of the bone distractor preoperatively. All patients had undergone preoperative orthodontic treatment for teeth alignment and arch expansion. Afterwards alveolar cleft grafting was performed for closure of oronasal fistula. Surgical procedures were performed for anterior maxillary advancement. After five days latency period, the bonedistractors were activated for two to three weeks postoperatively and were removed after twelve weeks postactivation for bone consolidation. Immediate lateral cephalometry and digital panorama were taken. Postoperative orthodontic treatment continued for all patients for proper teeth alignment. After six months of complete consolidation multislice CT were taken for bone density measurement. After nine months of device removal another lateral cephalometry was taken to measure amount of postoperative relapse and soft tissue changes. There was a noticeable change as regard maxillary advancement and profile improvement for patients. Minimal relapse occurred.
2015
Ph.d
Al-Azhar
Dental Medicine