الفهرس 
Growth of nasomaxillary complexOnly 14 pages are availabe for public view
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Abstract
Anterior maxillary osteotomy considered to be a method of choice to
correct the maxillary protrusion when there is an accepted occlusion
posteriorly. Fixation of the anterior maxillary osteotomy using biodegradable
bone plates and screw system eliminate the disadvantages of using titanium
bone plates and screw system.
In this clinical study, sixteen adult patients with ages ranged from 19
to 26 years having and suffering from maxillary protrusion that could not be
corrected by orthodontic treatment indicated and planed for surgical
correction using anterior maxillary osteotomy. They were selected from the
out-patients clinic of the Oral and Maxillofacial Surgery, as well as from
Orthodontic departments, Faculty of Dentistry, Tanta University.
Patients of this study were classified into two equal groups (8 cases
each) according to the plating and screw system that was used either
biodegradable bone plating or titanium bone plating systems.
The surgical technique was performed by the same team of surgeons in
planned steps for all patients in both groups who were operated under general
anesthesia via nasoendotracheal intubations.
Orthodontic preparation, model surgery and occlusal wafer were done.
before the surgical operation. Anterior maxillary osteotomy was done via
Cuper vestibular approaches, extraction of the first premolars, reposition of
the anterior maxillary part by the help of occlusal wafer and finally fixation
of the osteotomy segments using one methods of the plating systems.