The purpose of this study was to clarify the relationship between shapes of the epiglottis and risk of aspiration. The subjects consisted of ten normal volunteers and sixty-eight stroke patients with dysphagia. Using videofluorographic images, shapes of the epiglottis were divided into three groups, straight, curved, and closed type. The appearance ratio of types of epiglottis shape in normal volunteers was not significantly different from those in dysphasic patients. The risk of aspiration was significantly different from the types of epiglottis shape, which was the highest in the patients of curved epiglottis and lowest in those of straight-type epiglottis. The results revealed that the shape of the epiglottis is useful to predict the risk of aspiration.
This study was to done to evaluate auditory psychological factors concerning assessment of dysphagia using cervical auscultation. A semantic differential technique was used to obtain the auditory psychological factors in this study. Expiratory sounds after swallows were recorded from 17 head and neck cancer patients, and they were classified in five categories according to videof luorograf is findings. Thirteen clinicians and nine acoustic scientists judged each of 23 sound samples, and scored them using a seven-step scale. The results of factor analyses of auditory psychological experiments were similar in both the clinician and engineer groups. Three factors were extracted, and each factor had high factor loading in similar semantic scales.
Aneurysmal bone cysts in the maxilla and mandible are extremely rare. We reported a case of aneurysmal bone cyst in the mandible treated successfully with an embolization. The patient was a 16-year-old woman. The chief complaint was swelling in the right buccal region. Preoperative at the first surgery with biopsy, the thinned cortical bone and bleeding from the bone marrow were observed. Bone resorption was observed, but tumorous tissue could not be seen. The inner layer of the bone was curetted. Based on the biopsy and the clinical findings, this lesion was diagnosed as aneurysmal bone cyst. During follow-up arterial embolization and sclerotherapy were added. The buccal swelling was diminished, and no evidence of recurrence was observed.
A case of central odontogenic fibroma with the impacted deciduous second molar in a 3-year-old boy is presented. Panoramic radiograph demonstrated a monolocular radiolucent lesion over the crown of the deciduous second molar. Under clinical diagnosis of a dentigerous cyst or benign tumor, the lesion was extirpated, and the crown was exposed to the oral cavity by marsupialization. The removed specimen was histologically diagnosed as odontogenic fibroma. The impacted deciduous second molar erupted completely in normal position 1 year after marsupialization. A tooth germ of the permanent second premolar was observed on the panoramic radiograph 3 years and 5 months after surgery, and there was no evidence of the tumor recurrence after 4 years.
Electrotome is frequently used for surgical treatments in the field of dentistry and oral surgery. We report a rare case of gingival and alveolar bone necrosis caused after gingivectomy with electrotome. The patient was a 30-year-old female complained of gingival discolor. She noticed the gingival discoloration 2 days after the gingivectomy with electrotome by her family dentist. The gingiva around the left upper central incisor was changed to white in color. Nine days after the electrosurgery, the left upper central incisor fell off spontaneously, and 7 weeks after the electrosurgery, the sequester was removed. Epithelization was completed 2 weeks after the sequestrectomy, and she was successufully treated by the fixed bridge and removable artificial gingiva.