Abstract:
Background. After tooth extraction, the alveolar ridges undergo a more pronounced resorption
in the absence of physiological mechanical stimuli on the alveolar bone, but due to nonphysiological
forces, they lead both to horizontal and vertical bone loss, resulting in bone
atrophy. Evaluation of the bone reconstruction method by autogenous graft interposition for
implant-prosthetic rehabilitation of patients with severe upper jaw atrophy.
Case report. The patient B.A., 38 years old, non-smoker, with satisfying oral hygiene and
mean smile line, was diagnosed with Bimaxillary retrognatism with obstructive sleep apnea
syndrome, class I subclass I edentation after Kennedy at maxilla, combined bone defect in the
region teeth 1.2-2.2. This diagnosis was established following the standard clinical and
paraclinical examination: photographic examination, analysis of study models, CBCT, profile
teleradiography, based on which the surgical guides for the repositioning of the jaws were
manufactured. The surgical treatment consisted in the Le Fort I osteotomy of the upper jaw
with the application by interposition of the granulated xenograft mixture with autogenous bone
graft of iliac crest harvested by the minimal-invasive technique and its immobilization with
osteosynthesis plates in the normo-cephalometric position. The lower jaw was also advanced,
after bilateral sagittal osteotomy, in accordance with the upper jaw. As a result of the bone
reconstruction by interposition of autogenous graft from the iliac crest, a sufficient bone
volume was obtained both in width and in length for insertion of dental implants of optimum
dimensions, which allowed the patient's rehabilitation from the morphological, functional and
aesthetic point of view.
Conclusions. Reconstruction of the upper jaw with severe atrophy can be performed by the
technique of interposition of autogenous bone graft from the iliac crest in combination with
xenograft. This method offers a good possibility of morpho-functional and aesthetic
rehabilitation with a high degree of predictability.
Description:
Department of Oral and
Maxillofacial Surgery and Oral Implantology Arsenie Gutan, Nicolae Testemitanu State
University of Medicine and Pharmacy, Chisinau, Republic of Moldova, The 8th International Medical Congress for Students and Young Doctors, September 24-26, 2020