Assessment of inferior alveolar nerve damage in neurosensory disturbance

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Poster

DNA-cytometry increases the sensitivity of relapse prognosis from 5% to 28%. doi:10.1016/j.ijom.2007.09.090

Herewith, we stress the importance of MULTIPLE SECTIONAL BIOPSY for all suspected cases of AMELOBLASTOMA.

presentation, we will present a case of cystic type of fibrous dysplasia in the mandible. doi:10.1016/j.ijom.2007.09.094

doi:10.1016/j.ijom.2007.09.092

P90 Assessment of inferior alveolar nerve damage in neurosensory disturbance K. Asada*, A. Tasaka, K. Kiyohashi, K. Hirashita, H. Yamamoto, K. Ishibashi Second Department of Oral and Maxillofacial Surgery, Tsurumi University School of Dental Medicine, Japan Current perception threshold (CPT) values at frequencies of 2000, 250, 5 Hz reflect function of AAY, Ad and C nerve fibre. This study was to clarify damages of trigeminal nerve by measuring CPT and Semmes-Weinstein pressure threshold in 50 patients who complained of neurosensory disturbances. Increase in CPT values at 2000 Hz or it at all frequencies was observed mostly. The former associated with low level increase of SW pressure threshold, the latter associated with high level it. This result suggests that only AAY fibres is damaged in mild injury to bundle of nerve fibre but all fibres are damaged equally in case of severe injury. doi:10.1016/j.ijom.2007.09.091

P94 P92 Incisional versus punch biopsy for diagnosis of oral mucosal lesions M. A. Nusrath*, M. Goodson, U. Durrani, D. Farr Maxillofacial Unit, James Cook University Hospital, Middlesbrough, UK Introduction: Traditionally, incisional biopsy has been advocated for diagnosis of oral pathology. Punch biopsy however has recently been recommended as a quicker, easier technique with fewer complications. Aim: The aim of this study was to observe differences in diagnostic value of incisional versus 4 and 6 mm punch biopsies. Methods: Three groups of twenty patients underwent a randomised management protocol of either incisional, 4 or 6 mm punch biopsy. Specimens were assessed by the same team of pathologists. Results: No significant differences existed in diagnostic value of incisional, 4mm and 6 mm biopsies (P > 0.05). Conclusions: Punch biopsy is a quick, easy and safe technique for diagnosis of oral mucosal lesions. doi:10.1016/j.ijom.2007.09.093

P91 Diagnostic dilemma – a Trojan horse

P93 M. S. P. S. Sundaravel Vel*, R. Veena Dayananda Sagar College Of Dental Sciences, Kumaraswamy Layout, Bangalore 78, India Some odontogenic tumours mimick cystic lesions in behaviour both clinically and radiologically. Histopathology, which is the mainstay for diagnosing odontogenic tumours may give a deceptive presentation in certain areas of the lesion. We present a case of painless swelling of mandible, extending from molar to molar bilaterally having odontogenic cystic features both clinically and radiologically with aspiration of frank pus. Histopathological diagnosis of incision biopsy specimen was glandularodontogenic cyst but multiple sections of excised specimen showed unicystic ameloblastoma with glandularodontogenic cystic changes in some regions.

Cystic fibrous dysplasia in mandible N. Guler*, G. Tore, K. Sencift, S. Cologlu Yeditepe University Faculty of Dentistry and Medicine, Istanbul, Turkey Fibrous dysplasia is a benign, rare and idiopathic skeletal disorder characterized by replacement and expansion of medullary bone by disorganized fibroosseous tissue. Radiographically, the lesions found as unilocular or multilocular in radiolucency or a spotted radiolucent/radiopaque pattern or dense radiopaque mass. The most typical radiographic feature is an opacification with weak defined margins interfered into the surrounding bone. Histologically, it is divided as osteolytic, osteosclerotic and cystic type although fibrous dysplasia shows irregularly shaped trabeculae of immature woven bone in a cellular fibroblastic stroma. In this poster

Rehabilitation of benign pathological condition by implants in adolescents R. Reddy*, H. Nandakumar, N. Srinath Krishnadevaraya College of Dental Sciences, Bangalore, India Dentigerous cyst is one which encloses the crown of an unerupted tooth by expansion of the follicle. It accounts for 16.6% of all jaw cysts. Patient may give the history of slowly enlarging swelling. A female patient aged 13 years came to our unit with a diffuse swelling on right side of her face where the clinical, radiological and histopathological examination revealed as dentigerous cyst. The patient underwent enucleation with extraction of affected teeth leading to partial edentulous state. Post-operatively after six months adequate bone filling was noted. Implant supported rehabilitation was done. This shows us the implant supported rehabilitation has proven good results. doi:10.1016/j.ijom.2007.09.095

P95 Solitary submucous neurofibroma of the mandib R. A. Depprich*, J. K. Handschel, U. Meyer, H. E. Gabbert, N. R. Kubler Department of Cranio and Maxillofacial Surgery, Heinrich-Heine-University Duesseldorf, Germany Neurofibroma is an uncommon tumour of the oral cavity. Our reports about a 64-year-old male patient with an enormous exophytic tumor in the oral cavity. Preoperative panoramic radiographs showed little to moderate interdental height loss of bone between teeth 37 and 38 but no other abnormalities. Surgical treatment included tumor resection, extraction of teeth 37 and 38 and a modelling osteotomie. Histopathological examination revealed a submucous benign mesenchymale proliferation with no signs of malignancy. Immunohistochemical findings showed a solitary submucous neurofibroma with a predominate fibromatous component. Pathogenesis of solitary