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The diagnosis and treatment of dentinogenic ghost cell tumour
Free Papers—Poster Presentations inadequate draining represent the major causes of the elevated mortality rate of DNM. doi:10.1016/j.ijom.2009.03.627
P155 The diagnosis and treatment of dentinogenic ghost cell tumour G. Sun ∗ , E. Tang, Q. Hu, X. Huang, X. Yang Department of Oral and Maxillofacial Surgery, Stomatological Hospital of Nanjing, Nanjing, China
Background and Objectives: The purpose of this study was to assess the diagnosis, treatment and prognosis of the dentinogenic ghost cell tumours. Methods: This is a retrospective study of patients who underwent one or multiple surgical interventions during the 10-year period from 1997 to 2007. Because dentinogenic ghost cell tumour have a more aggressive behaviour than ordinary calcifying odontogenic cyst and trends to local recurrence after enucleation, all patients underwent aggressive local resections. Results: Seven patients with dentinogenic ghost cell tumour are identified under the 2005 World Health Organization classification guidelines, here reported, have been surgically treated. The lesions were located in the maxilla in 4 patients and in the mandible in 3 patients. Five patients experienced recurrence following conservative surgeries. Two patients had no recurrence after aggressive local resections. After 7 to 105 months follow-up, no recurrence was found. Conclusion: The intraosseous dentinogenic ghost cell tumours should be treated by resection with an adequate safety margin, at least 0.5 cm, similar to recommend for ameloblastoma. For the recurrent dentinogenic ghost cell tumours, should remain in long-term follow-up. doi:10.1016/j.ijom.2009.03.628
P156 The pattern of maxillofacial fractures in Ministry of Health Hospitals Malaysia W.M. Mustafa ∗ , K.K. Tay, P.I. Chelvanayagam, K.A. Mutalib, Y. Najardin, A. Rahman Razali, B.C. Ma, K.M. Yuen, S.J. Royan, V. Celestine, C. Vincent, A.R. Rusdi Department of Oral Surgery, Hospital Kuala Lumpur, Jalan Pahang, Malaysia
Background and Objectives: To assess the pattern of facial fractures at 23 Malaysian hospitals. Methods: A one year prospective study was carried out. The data collected include age, gender, ethnicity, aetiology, sites of fractures and treatment. Results: 2101 fractures were found in 1862 patients. Most fractures occurred in the age range 20 to 29 years old (mean 29.2, 642 cases, 34.5%). Men were more commonly affected (6 males vs 1 female). Malays (62%) were the most commonly affected ethnic group followed by Indians (14.4%) and Chinese (14.1%) and foreigners (5.9%). Most fractures were caused by road traffic accidents (RTAs) (79.59%), assaults (7.62%) and falls (6.50%). The majority of RTAs cases involved motor cyclists. The commonest bones involved were the mandible (51.2%), followed by zygoma (23.6%), maxilla (19.8%), isolated orbital (3.9%), nasoethmoidal (19 or 0.9%) and frontal bone fractures (15, 0.7%). The commonest method of treatment used was conservative treatment (33.2%), followed by open reduction and internal fixation (31.5%), and closed reduction (29.6%). 4.7% of the patients refused treatment. Conclusion: Maxillofacial fractures as a result of RTAs are still very high and are usually associated with the motorcycle rider and pillion rider. Current preventive measures have little impact on the incidence of road traffic accident related facial fractures in Malaysia. doi:10.1016/j.ijom.2009.03.629
P157 Maxillomandibular advancement and uvulopalatopharyngoplasty for severe obstructive sleep apnoea syndrome X. Lu ∗ , M. Zhu, G. Shen, J. He, R. Zhang Department of Oral and Maxillofacial Surgery, Affiliated Shanghai Ninth People’s Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
Background and Objectives: For oriental patients with severe obstructive sleep apnoea syndrome (OSAS), maxillomandibular advancement (MMA) procedures may cause craniomaxillofacial deformities after their jaws advance in large distance though these procedures can resolve the upper airway problem. What we want is to resolve the problem by means of combined uvulopalatopharyngoplasty (UP3/UPPP) and MMA in same term.
577
Methods: 18 obese patients with severe OSAS, age 42 ± 10 years, body mass index 28.42 ± 3.0, apnoea hypopnoea index (AHI) 66.72 ± 15.82 preoperatively. All patients underwent cephalometric analysis, polysomnograph and estimation of velopharyngeal closure and speech function preoperatively. All patients underwent UPPP and MMA in same term. Their maxilla advanced 8.33 ± 1.46 mm by Le Fort I osteotomy; mandible moved forward 11 ± 3 mm by bilateral sagittal split ramus osteotomy; and the pogonion moved 15 ± 2 mm by genioplasty. Results: All patients’ sleep-related breathing disorders was cured successively, their AHI 5.14 ± 2.70 postoperatively, mean follow-up duration is 16.0 ± 7.23 months. All patients have no speech/swallow problems and have good teeth occlusion and good appearances. Conclusion: Velopharyngeal insufficiency can be avoided by means of computeraided designed UP3 and MMA. Patient’s maxillary bone and wound can also get to heal smoothly and well after underwent combined UPPP and MMA in same term. Our surgical procedures have good responds for the obese patients with severe OSAS. Long term results need to be followed. doi:10.1016/j.ijom.2009.03.630
P158 Measurement of salivary secretion and estimate of salivary function S. Toya ∗ , I. Mataga Dry Mouth Clinic, Oral and Maxillofacial Surgery, The Nippon Dental University Niigata Hospital, Chuo-ku, Niitaga City, Japan
Background and Objectives: Xerostomia causes a decrease in the amount of salivary secretion, which can lead to other symptoms of the oral cavity and pharynx. Protocol for the treatment of dry mouth at our “Dry Mouth Clinic” is discussed. Methods: As subjective total number of fifty eight patients (18 males and 40 females; mean age 64.5 years) who visited and were treated at our clinic during the year 2007. The Saxon test was employed as the marker of salivary secretion by chewing a gauze sponge for 2 minutes. Oral moisture was measured at both lingual and buccal mucosa by using an oral moisture checking device. Results: The average amount of salivary secretion in the Saxon test was 1.96 g/2 minutes. The average oral mucosal
P155 The diagnosis and treatment of dentinogenic ghost cell tumour G. Sun ∗ , E. Tang, Q. Hu, X. Huang, X. Yang Department of Oral and Maxillofacial Surgery, Stomatological Hospital of Nanjing, Nanjing, China
Background and Objectives: The purpose of this study was to assess the diagnosis, treatment and prognosis of the dentinogenic ghost cell tumours. Methods: This is a retrospective study of patients who underwent one or multiple surgical interventions during the 10-year period from 1997 to 2007. Because dentinogenic ghost cell tumour have a more aggressive behaviour than ordinary calcifying odontogenic cyst and trends to local recurrence after enucleation, all patients underwent aggressive local resections. Results: Seven patients with dentinogenic ghost cell tumour are identified under the 2005 World Health Organization classification guidelines, here reported, have been surgically treated. The lesions were located in the maxilla in 4 patients and in the mandible in 3 patients. Five patients experienced recurrence following conservative surgeries. Two patients had no recurrence after aggressive local resections. After 7 to 105 months follow-up, no recurrence was found. Conclusion: The intraosseous dentinogenic ghost cell tumours should be treated by resection with an adequate safety margin, at least 0.5 cm, similar to recommend for ameloblastoma. For the recurrent dentinogenic ghost cell tumours, should remain in long-term follow-up. doi:10.1016/j.ijom.2009.03.628
P156 The pattern of maxillofacial fractures in Ministry of Health Hospitals Malaysia W.M. Mustafa ∗ , K.K. Tay, P.I. Chelvanayagam, K.A. Mutalib, Y. Najardin, A. Rahman Razali, B.C. Ma, K.M. Yuen, S.J. Royan, V. Celestine, C. Vincent, A.R. Rusdi Department of Oral Surgery, Hospital Kuala Lumpur, Jalan Pahang, Malaysia
Background and Objectives: To assess the pattern of facial fractures at 23 Malaysian hospitals. Methods: A one year prospective study was carried out. The data collected include age, gender, ethnicity, aetiology, sites of fractures and treatment. Results: 2101 fractures were found in 1862 patients. Most fractures occurred in the age range 20 to 29 years old (mean 29.2, 642 cases, 34.5%). Men were more commonly affected (6 males vs 1 female). Malays (62%) were the most commonly affected ethnic group followed by Indians (14.4%) and Chinese (14.1%) and foreigners (5.9%). Most fractures were caused by road traffic accidents (RTAs) (79.59%), assaults (7.62%) and falls (6.50%). The majority of RTAs cases involved motor cyclists. The commonest bones involved were the mandible (51.2%), followed by zygoma (23.6%), maxilla (19.8%), isolated orbital (3.9%), nasoethmoidal (19 or 0.9%) and frontal bone fractures (15, 0.7%). The commonest method of treatment used was conservative treatment (33.2%), followed by open reduction and internal fixation (31.5%), and closed reduction (29.6%). 4.7% of the patients refused treatment. Conclusion: Maxillofacial fractures as a result of RTAs are still very high and are usually associated with the motorcycle rider and pillion rider. Current preventive measures have little impact on the incidence of road traffic accident related facial fractures in Malaysia. doi:10.1016/j.ijom.2009.03.629
P157 Maxillomandibular advancement and uvulopalatopharyngoplasty for severe obstructive sleep apnoea syndrome X. Lu ∗ , M. Zhu, G. Shen, J. He, R. Zhang Department of Oral and Maxillofacial Surgery, Affiliated Shanghai Ninth People’s Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
Background and Objectives: For oriental patients with severe obstructive sleep apnoea syndrome (OSAS), maxillomandibular advancement (MMA) procedures may cause craniomaxillofacial deformities after their jaws advance in large distance though these procedures can resolve the upper airway problem. What we want is to resolve the problem by means of combined uvulopalatopharyngoplasty (UP3/UPPP) and MMA in same term.
577
Methods: 18 obese patients with severe OSAS, age 42 ± 10 years, body mass index 28.42 ± 3.0, apnoea hypopnoea index (AHI) 66.72 ± 15.82 preoperatively. All patients underwent cephalometric analysis, polysomnograph and estimation of velopharyngeal closure and speech function preoperatively. All patients underwent UPPP and MMA in same term. Their maxilla advanced 8.33 ± 1.46 mm by Le Fort I osteotomy; mandible moved forward 11 ± 3 mm by bilateral sagittal split ramus osteotomy; and the pogonion moved 15 ± 2 mm by genioplasty. Results: All patients’ sleep-related breathing disorders was cured successively, their AHI 5.14 ± 2.70 postoperatively, mean follow-up duration is 16.0 ± 7.23 months. All patients have no speech/swallow problems and have good teeth occlusion and good appearances. Conclusion: Velopharyngeal insufficiency can be avoided by means of computeraided designed UP3 and MMA. Patient’s maxillary bone and wound can also get to heal smoothly and well after underwent combined UPPP and MMA in same term. Our surgical procedures have good responds for the obese patients with severe OSAS. Long term results need to be followed. doi:10.1016/j.ijom.2009.03.630
P158 Measurement of salivary secretion and estimate of salivary function S. Toya ∗ , I. Mataga Dry Mouth Clinic, Oral and Maxillofacial Surgery, The Nippon Dental University Niigata Hospital, Chuo-ku, Niitaga City, Japan
Background and Objectives: Xerostomia causes a decrease in the amount of salivary secretion, which can lead to other symptoms of the oral cavity and pharynx. Protocol for the treatment of dry mouth at our “Dry Mouth Clinic” is discussed. Methods: As subjective total number of fifty eight patients (18 males and 40 females; mean age 64.5 years) who visited and were treated at our clinic during the year 2007. The Saxon test was employed as the marker of salivary secretion by chewing a gauze sponge for 2 minutes. Oral moisture was measured at both lingual and buccal mucosa by using an oral moisture checking device. Results: The average amount of salivary secretion in the Saxon test was 1.96 g/2 minutes. The average oral mucosal