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First results of malignant craniofacial tumour surgery
Posters 157 and those without metastasis were 9.95 + 4.31 and this difference was also significant (P = 0.0002). Multivariate analysis regarding Iymphnode metastasis was conducted, to compare vascularization with other factors. Vascularization showed the most significant indicators (P -- 0.0026).
Conclusion: Vascularization is a highly significant indicator for Iymphnode metastasis. Although a prospective study is necessary, we think this factor may be a useful parameter to assess whether the oral cancer will metastasize or not in the future.
Magnetic Resonance Images in Patients with Acute Traumatic Injury of the Temporomandibular Joint: A Preliminary Report Takaku S., Sano T., Yoshida M.
The Neoplasms of Oral Cavity (A Retrospective Study) Tasar F, 1, Araz K. 1, Usubiitiin A. 2, Saysel M. Y.I
1Department of Oral Surgery, Faculty of Dentistry and 2Department of Pathology, Faculty of Medicine, Hacettepe University, Ankara, Turkey The neoplasms of the oral cavity can be classified as odontogenic and nonodontogenic neoplasms. The neoplasms may be malign or benign and, according to their type, they can cause various complaints and can show different clinical symptoms. In this study, 1216 cases were reviewed in a 10 year period between 1985-1995. Eighty-five benign or malign cases were included in this study. These patients showed 26 different tumour types and 34 of the cases were odontogenic, while 51 of them were nonodontogenic. In the cases which were nonodontogenic, 20 cases were malign 31 of them were benign. All cases were re-evaluated according to their clinical and histopathological features.
Department of Oral and Maxillofacial Surgery, Saitama Medical School, Saitama, Japan From this study of condylar and subcondylar fractures, the damage to the intracapsular soft tissues, excluding bony structures, was most remarkable in the flexible tissues, such as the joint capsule and the retrodiscal tissues, and there were almost no signs of injury to the disc. This finding suggests that, in the case of delayed open reduction, consequent contracture, caused by secondary fibrous changes at the site of injury, may preclude reduction of a displaced condylar fragment and disc. From this point of view, open reduction should be performed at the earliest time permitted by the local and systemic condition of the patient. Magnetic resonance imaging is as useful as plain film radiograph and computed tomography for preoperative imaging of condyle and subcondyle fractures.
First Results of Malignant Craniofacial Turnout Surgery Tanyashin S. E, Tcherekaev EA., Reshetov L E, Sdvizkov A.M., Edneva Y.N.
Burdenko Neurosurgical Institute and P.A. Hertzen Cancer Research Institute, Moscow, Russia We have a 3-year experience of surgical treatment of 8 patients with malignant craniofacial tumours (2 males and 6 females). By histological examination adenocarcinomas (3), plan-cellular carcinomas (2) basal-cellular carcinomas (2) and micro-cellular (1) were found. We used transfacial, orbitozygomatic and combined approaches. The operative methods included wide resection of soft tissues (skin, muscles and dura) and cranial bones (orbital walls, zygomoid process, middle fossa base and petrous bone). Three patients had the radiotherapy before surgery, 3 patients before and during surgery and 2 patients before and after surgery. In 8 cases, the soft tissue plastic including skin, muscles and costal fragments was used. All patients underwent postoperative chemotherapy. In all cases the operations were performed simultaneously with participation of ENT surgeons, neurosurgeons and plastic surgeons. There was no postoperative mortality and no complication. In the 3-year period, 2 patients had recurrences of tumours.
Comparison of the Effectiveness of Asemetasin and Paracetamol in Impacted Mandibular Third Molar Surgery Tasar F., Saysel M., Sener B.C., Esen E.
Department of Oral Surgery, Faculty of Dentistry, Hacettepe University, Ankara, Turkey Prophylactic application of antiinflammatory drugs hinders postoperative oedema, trismus and pain. Asemetasin has been recently introduced to our field as an anti-inflammatory drug. Thirty healthy patients with bilateral impacted mandibular 3rd molar teeth were chosen for this study. Fifteen patients received 60 mg asemetasin 2 h prior the surgery and one side was operated on. Two weeks later, mandibular impacted 3rd molar of the other side was removed. One hour prior to the second operation, the patient received 500 mg paracetamol. To measure oedema and trismus predetermined distances as defined by Gabka on the face and the interincisal distance were measured preoperatively, postoperatively on the 1st, 2rid, 3rd, 5th and 7th days. Additionally, the presence of spontaneous pain, pain during oral functions and palpation were also measured at the postoperative 15, 30, 45 and 60 rain, 2, 4, 8, 12, 24, 48 and 72 h. Need for an additional analgesic drug and side effects, if present, were also noted. Results showed that, asemetasin and paracetamol have different anti-inflammatory effects.
A Histologic Study of the Embryonal Hard Palate on the Origin of the so-called 'Globulomaxillary Cyst' Fissural versus Odontegenic
Hwang S.J, WeidhaseA., Burkhardt A. The origin of the so-called globulomaxillary cyst is still controversial. Originally it was regarded as a fissural cyst derived from superficial epithelium entrapped during fusion of the intermaxillary segment of the facial process: with the palatal shelves. However recently the fissural nature of the cyst has been increasingly questioned and it is regarded by many as a cyst arising from odontogenic epithelium. A histologic study of embryonal hard palate was undertaken to examine epithelial cell remnants or cystic changes in the area of fusion lines especially in the anterior maxilla.
Conclusion: Vascularization is a highly significant indicator for Iymphnode metastasis. Although a prospective study is necessary, we think this factor may be a useful parameter to assess whether the oral cancer will metastasize or not in the future.
Magnetic Resonance Images in Patients with Acute Traumatic Injury of the Temporomandibular Joint: A Preliminary Report Takaku S., Sano T., Yoshida M.
The Neoplasms of Oral Cavity (A Retrospective Study) Tasar F, 1, Araz K. 1, Usubiitiin A. 2, Saysel M. Y.I
1Department of Oral Surgery, Faculty of Dentistry and 2Department of Pathology, Faculty of Medicine, Hacettepe University, Ankara, Turkey The neoplasms of the oral cavity can be classified as odontogenic and nonodontogenic neoplasms. The neoplasms may be malign or benign and, according to their type, they can cause various complaints and can show different clinical symptoms. In this study, 1216 cases were reviewed in a 10 year period between 1985-1995. Eighty-five benign or malign cases were included in this study. These patients showed 26 different tumour types and 34 of the cases were odontogenic, while 51 of them were nonodontogenic. In the cases which were nonodontogenic, 20 cases were malign 31 of them were benign. All cases were re-evaluated according to their clinical and histopathological features.
Department of Oral and Maxillofacial Surgery, Saitama Medical School, Saitama, Japan From this study of condylar and subcondylar fractures, the damage to the intracapsular soft tissues, excluding bony structures, was most remarkable in the flexible tissues, such as the joint capsule and the retrodiscal tissues, and there were almost no signs of injury to the disc. This finding suggests that, in the case of delayed open reduction, consequent contracture, caused by secondary fibrous changes at the site of injury, may preclude reduction of a displaced condylar fragment and disc. From this point of view, open reduction should be performed at the earliest time permitted by the local and systemic condition of the patient. Magnetic resonance imaging is as useful as plain film radiograph and computed tomography for preoperative imaging of condyle and subcondyle fractures.
First Results of Malignant Craniofacial Turnout Surgery Tanyashin S. E, Tcherekaev EA., Reshetov L E, Sdvizkov A.M., Edneva Y.N.
Burdenko Neurosurgical Institute and P.A. Hertzen Cancer Research Institute, Moscow, Russia We have a 3-year experience of surgical treatment of 8 patients with malignant craniofacial tumours (2 males and 6 females). By histological examination adenocarcinomas (3), plan-cellular carcinomas (2) basal-cellular carcinomas (2) and micro-cellular (1) were found. We used transfacial, orbitozygomatic and combined approaches. The operative methods included wide resection of soft tissues (skin, muscles and dura) and cranial bones (orbital walls, zygomoid process, middle fossa base and petrous bone). Three patients had the radiotherapy before surgery, 3 patients before and during surgery and 2 patients before and after surgery. In 8 cases, the soft tissue plastic including skin, muscles and costal fragments was used. All patients underwent postoperative chemotherapy. In all cases the operations were performed simultaneously with participation of ENT surgeons, neurosurgeons and plastic surgeons. There was no postoperative mortality and no complication. In the 3-year period, 2 patients had recurrences of tumours.
Comparison of the Effectiveness of Asemetasin and Paracetamol in Impacted Mandibular Third Molar Surgery Tasar F., Saysel M., Sener B.C., Esen E.
Department of Oral Surgery, Faculty of Dentistry, Hacettepe University, Ankara, Turkey Prophylactic application of antiinflammatory drugs hinders postoperative oedema, trismus and pain. Asemetasin has been recently introduced to our field as an anti-inflammatory drug. Thirty healthy patients with bilateral impacted mandibular 3rd molar teeth were chosen for this study. Fifteen patients received 60 mg asemetasin 2 h prior the surgery and one side was operated on. Two weeks later, mandibular impacted 3rd molar of the other side was removed. One hour prior to the second operation, the patient received 500 mg paracetamol. To measure oedema and trismus predetermined distances as defined by Gabka on the face and the interincisal distance were measured preoperatively, postoperatively on the 1st, 2rid, 3rd, 5th and 7th days. Additionally, the presence of spontaneous pain, pain during oral functions and palpation were also measured at the postoperative 15, 30, 45 and 60 rain, 2, 4, 8, 12, 24, 48 and 72 h. Need for an additional analgesic drug and side effects, if present, were also noted. Results showed that, asemetasin and paracetamol have different anti-inflammatory effects.
A Histologic Study of the Embryonal Hard Palate on the Origin of the so-called 'Globulomaxillary Cyst' Fissural versus Odontegenic
Hwang S.J, WeidhaseA., Burkhardt A. The origin of the so-called globulomaxillary cyst is still controversial. Originally it was regarded as a fissural cyst derived from superficial epithelium entrapped during fusion of the intermaxillary segment of the facial process: with the palatal shelves. However recently the fissural nature of the cyst has been increasingly questioned and it is regarded by many as a cyst arising from odontogenic epithelium. A histologic study of embryonal hard palate was undertaken to examine epithelial cell remnants or cystic changes in the area of fusion lines especially in the anterior maxilla.