All issues
Volume 49, Issue 2
Displaying 1-10 of 10 articles from this issue
- |<
- <
- 1
- >
- >|
-
Hisao SHIGEMATSU, Masayuki KAGAYA, Aya HAMAO, Aya TANAKA, Seiji SUZUKI ...2000 Volume 49 Issue 2 Pages 57-61
Published: March 10, 2000
Released on J-STAGE: September 07, 2011
JOURNAL FREE ACCESSThis article describes the incidence of mineralization in the stylohyoid ligament complex (SLC) in a sample of the patient population of the Meikai University School of Dentistry. The age of the patients ranged from 3 to 89 years, and a total of 800 orthopantomographs of the patients were analyzed. There was a sharp increase in mineralization during the first three decades of life, from 38% in the first decade to 90.5% in the third. No relationship could be established between the extent of mineralization and increasing patient age thereafter. The SLC could be detected in 93.8% of the adult patients who were over 20 years of age. The results suggest that orthopantomography is one of the best methods to observe the SLC. A classification of the radiographic appearance of the SLC based on three types of complexes -type A: normal type B: elongated and type C: very elongated- is proposed. According to the classification, among adult patients, type A represented 73.9% type B 18.7% and type C 1.2%. Among all patients, the incidence of elongated SLC was 19.9%. This classification is easy and useful to diagnose an elongated SLC clinically.View full abstractDownload PDF (718K) -
Studies on Salivary Scintigraphy Using 99mTcO4-Michio TOYAMA, Tsutomu KATADA, Yoshihiko SASAKI, Masatoshi TOGASHI, Ma ...2000 Volume 49 Issue 2 Pages 62-69
Published: March 10, 2000
Released on J-STAGE: September 07, 2011
JOURNAL FREE ACCESSThe purpose of this study was to show clearly what factors such as tumor size, duration of illness, location, and tumor invasion in salivary gland tumor affect salivary gland function.
The study cases were 42 salivary gland tumor patients who underwent computed tomography (CT) and sialoscintigraphy. Salivary gland tmor was confirmed histopathologically. The patients were 24 males and 18 females, aged from 16 to 82 years old (mean age: 52.8years old). There were 23 patients with parotid gland tumors and 19 patients with submandibular gland tumors (27 benign tumors, 15 malignant tumors).
By using 99mTcO4- sialoscintigraphy, the salivary gland function was classified into three different types according to stimulatory selection ratio which was expressed as the ratio of pre-to post-stimulation counts on the salivary gland, namely, normal, lower functional, and no functional types. Then the normal type was judged abnormal function, and the lower and no functional types were judged as abnormal function.
The results were as follows:
1. There was a significant difference between malignant tumor and benign tumor in salivary gland function (P < 0.0001).
2. Depending on tumor size, abnormal function was significantly higher than normal function (P < 0.05).
3. There was no statistical significant difference among duration of illness, location of tumor, and salivary gland function.
4. There was a significant difference between tumor invasion and salivary gland function (P < 0.0001).
The results showed that salivary gland function was disturbed in salivary gland tumor with larger size and positive invasion.View full abstractDownload PDF (2764K) -
The SIR Presentation by NCCLS MethodKazuki TAKAOKA, Hiromitsu KISHIMOTO, Yukiyo MANNO, Norihiko NISHIMURA, ...2000 Volume 49 Issue 2 Pages 70-79
Published: March 10, 2000
Released on J-STAGE: September 07, 2011
JOURNAL FREE ACCESSThe abscesses (224 cases) formed in the oral and maxillofacial region were studied bacteriologically from January, 1994 to September 1996. One hundred ninety-five strains of streptococci were identified as causative organisms, and their antimicrobial susceptibilities were assessed. The antimicrobial agents used were PCG, ABPC, CLDM, EM, CCL, FMOX, IPM, MINO, OFLX, GM. It was attempted to apply the break point of St. pneumoniae in the NCCLS method (USA) to oral streptococci in comparison with that determined by using the calculation formula for antimicrobial agents against respiratory tract infection in Japan (JSC method), and classified their antimicrobial susceptibilities.
As a result, there was little difference in antimic antimicrobial susceptibilities of bacterial species. Penicillins (PCG, ABPC) had slightly higher MICs against S. pneumoniae than those against other oral streptococci. Susceptibilities for cefems (FMOX), EM and IPM, other than of penicillins (PCG, ABPC), also did not decrease in oral streptococci. The break point in JSC method was not similar to that in the NCCLS method. Particularly, it was suggested that the break point for oral streptococci of penicillins and cefems in the NCCLS method was higher than that in the JSC method. Therefore, it is necessary to make the appropriate break point for oral streptococci.View full abstractDownload PDF (1801K) -
The Analysis of Present Situation of Medical Expenses for Diseases of Oral and Maxillofacial SurgeryThe Provision for Introduction of DRG/PPSAkihisa KAKIZOE, Takanori SUMIDA, Masaaki GOTO, Takeshi KATSUKI2000 Volume 49 Issue 2 Pages 80-85
Published: March 10, 2000
Released on J-STAGE: September 07, 2011
JOURNAL FREE ACCESSA change from the current piecework payment system to the Diagnosis-Related Group/Prospective Payment System (DRG/PPS) has been under discussion for “rationalization” of increasing medical expenses. Success of the DRG/PPS partly depends on how appropriate the grouping of diagnosis-related groups is going to be. The hospital charges were calculated by the method or progress of medical treatment in mandibular fracture or oral cancer cases. An appropriate grouping of diagnosis-related groups and the feasibility of an introduction of the DRG/PPS were discussed. The subjects were 11 patients hospital-treated for mandibular fracture and 20 patients hospital-treated for oral cancer between January 1997 and January 1999. In mandibular fracture, there is a fair chance for an introduction of the DRG/PPS if two treatmentmethod groups, opened and closed treatment, are established. However, in the case of oral cancer, it is difficult to establish reasonable diagnosis-related groups because of the large variety of methods of medical treatment. Introduction of the DRG/PPS is deemed unsuitable at the present for oral cancer cases. Medical payment points, as stipulated by the current piecework payment system, seem to be in need of streamlining by cost accounts before whether or not the DRG/PPS is appropriate in oral cancer cases can be concluded.View full abstractDownload PDF (803K) -
Pre- and Postoperative Changes of Swallowing Function in Patients with HemiglossectomyMika YOKOYAMA, Yukihiro MICHIWAKI, Koji TAKAHASHI, Risa UYAMA, Ken-ich ...2000 Volume 49 Issue 2 Pages 86-91
Published: March 10, 2000
Released on J-STAGE: September 07, 2011
JOURNAL FREE ACCESSThe purpose of this study was to clarify the influence of extent of tongue resection on the swallowing function in postsurgical tongue cancer patients. The subjects were three patients who had hemiglossectomy combined with immediate surgical reconstruction using free radial forearm flaps. Videof luorography was done pre- and postoperatively to examine the swallowing function. The swallowing function was qualitatively subdivided into 3 groups: safe, penetrated and aspirated. For quantitative assessment of the function, the laryngeal delay time, the pharyngeal passing duration, and the cricopharyngeal opening duration were measured. The risk of aspiration and penetration increased postsurgically. The laryngeal delay time and the pharyngeal passing duration of the patients increased, comparing with normal volunteers. The operation significantly affected both the laryngeal delay time and the pharyngeal passing duration. The results revealed that the pharyngeal phase of the swallow in tongue cancer patients was harmed. Postsurgical patients were at high risk of aspiration, particularly, in the early postoperative stage despite surgical reconstruction using forearm flaps.View full abstractDownload PDF (1759K) -
Methodology and Area Function in Normal SubjectsHiroto SAITO, Noriko SUZUKI, Yukihiro FUJITA, Ken-ichi MICHI, Toshiyuk ...2000 Volume 49 Issue 2 Pages 92-101
Published: March 10, 2000
Released on J-STAGE: September 07, 2011
JOURNAL FREE ACCESSThe purpose of this study was to investigate the applicability of magnetic resonance imaging (MRI) to measure the 3-D shape of the vocal tract during speech, for use in the treatment of patients with speech disorders due to oral lesions. Advantages of this procedure are (1) reduction of exposure time, (2) use of dental crown plate, and (3) stable landmarks. The stability and reproducibility of this technique and functional areas of the vocal tract in five normal subjects during the production of the vowel [i] were investigated.
Results were as follows:
(1) Reproducibility of the system and data analysis were high.
(2) The largest area in the oral cavity was located at the upper central incisor, canine, and posterior nasal spine (PNS).
(3) The narrowest section of the oral cavity was located at the first molar during the production of [i] in the five subjects.
(4) An extreamely narrow section of the oral cavity was located between 15 and 35 mm from the central incisors in the five subjects.
In conclusion, our results suggest that 3-D measurements provided by MR images are useful for clinical evaluation of speech disorders. The characteristics of normal subjects were obtained.View full abstractDownload PDF (3481K) -
Evaluation of Removal of the Cyst in Combination with Resection of the Hyoid BoneShigehito WADA, Ken OMURA2000 Volume 49 Issue 2 Pages 102-107
Published: March 10, 2000
Released on J-STAGE: September 07, 2011
JOURNAL FREE ACCESSNineteen cases of thyroglossal duct cyst treated in our division between April, 1974 and March, 1995 were clinicopathologically studied. The results were as follows:
1. There were 8 (42.1%) males and 11 (57.9%) females. The mean age of the patients was 33.5 years, ranging from 1 to 57 years.
2. Fifteen cysts (78.9%), including 3 previously treated cysts, was located in the hyoid region, 2 in the infrahyoid region, 1 in the submental region, and 1 in the thyroid region.
3. According to operative findings, the suitable operative procedure was selected for each patient. Macroscopically the duct crossed the hyoid bone in 12 patients and the cyst contacted the hyoid bone in 3 patients. In these 15 patients whose cyst was located in the hyoid region, the cyst and duct were removed in combination with resection of the body of the hyoid. In one patient the duct was not detected, and in the remaining 3 patients the duct disappeared without reaching the hyoid bone. In these 4 patients, the cyst was removed without resecting the hyoid bone.
4. The disease recurred after the operation in 2 out of 19 patients (10.5%). The locations of recurrence were in the hyoid region and in the submental region. The rate of recurrence was 6.7% in the cases of resected hyoid bone, and 25.0% in the cases of preserved hyoid bone.
5. It was suggested that the thyroglossal duct cyst located in the hyoid region should be removed in combination with resection of the hyoid bone.View full abstractDownload PDF (1686K) -
Yukiko AKASHI, Yoshiaki SHIGEMATSU, Munehisa OKADA, Kazuhiko SAITO, Se ...2000 Volume 49 Issue 2 Pages 108-111
Published: March 10, 2000
Released on J-STAGE: September 07, 2011
JOURNAL FREE ACCESSVerruciform xanthoma is a rare lesion of the oral cavity, and it's appearance ranges from ‘white and warty’ to ‘red and ulcerated’. This disease was first described as an entity by Shafer in 1971.
Case 1: On April 8, 1989, an 84-year-old male had contact pain elicited by his dentures. Clinically, the buccal gingival mucosa of the upper right canine area displayed yellowish-white marks and a granular surface lesion that measured 11×10mm and was well defined. The lesion was clinically diagnosed as a papilloma.
Case 2: On April 14, 1998, this lesion of the palatal gingiva upper right first molar occurred in a 42-year-old male. By clinical observation, the lesion was seen to have yellowish-white marks and a papillary surface that measured 17×9 mm and was well defined. The clinical diagnosis was papilloma.
Histopathologically, the lesion was typically verrucous and parakeratinized and foamy cells filled the papillary corium, but extended only as far as the tips of the elongated rete ridges. The foamy cells were suggested to be macrophages, because the cells were CD-68 positive and S-100 protein negative by immunohistochemistry.View full abstractDownload PDF (2897K) -
Akira WATANABE, Koichi SHIBASAKI, Akira YAMAGUCHI2000 Volume 49 Issue 2 Pages 112-121
Published: March 10, 2000
Released on J-STAGE: November 25, 2011
JOURNAL FREE ACCESSThe seroprevalence of HBs antigen (HBs Ag), anti-HCV antibody (anti-HCV), and transfusionassociated TT virus (TTV) DNA was studied in 80 patients with oral cancer. Control screening was also conducted for 28 other dental diseases, 47 hepatoellular carcinoma (HCC), and 181 subjects. HBs Ag, and-HCV and TTV DNA were detected in 1.3%, 7.5% and 50.0% of oral cancer patients, and the superinfection between HCV and TTV was found in 10%. As for 28 other dental diseases, HBs Ag, anti-HCV, and TTV DNA were detected in 3.6%, 3.6%, and 10.7%, respectively, and in 6.4%, 72.3%, and 59.6% of 47 HCC. Among 72 oral cancer patients confirming the existence of the blood transfusion, TTV DNA was detected in 57.1% of transfusion patients and in 37.8% of nontransfusion patients. There was no significant difference between the two groups. The liver function test values showed also no significant differences between the two groups with and without TTV DNA. On the contrary, the positive rate of HBs Ag, and-HCV, and TTV DNA in control subjects were 1.1%, 1.7%, and 18.8%, respectively. In oral cancer patients, TTV infection was significantly higher than other dental diseases and control subjects (p<0.05). The results suggested there is a possibility in which the hepatitis virus, including HCV and TTV, plays some important roles for the pathogenesis of oral cancer.View full abstractDownload PDF (1928K) -
Kou KAWAHARA, Fumio HOTTA, Azusa TABATA, Takamasa SHIROZU, Hitoshi MIY ...2000 Volume 49 Issue 2 Pages 122-126
Published: March 10, 2000
Released on J-STAGE: September 07, 2011
JOURNAL FREE ACCESSA 43-year-old female visited our facility with complaints of severe trismus, unilateral ache of the back of the head, and slight left ptosis.
A plain CT at the epipharyngeal level showed diffuse swelling of the left lateral and medial pterygoid muscles.
The diagnosis was trismus based on the infection or the tumor.
Antibiotic chemotherapy was started but without improvement of clinical symptoms. On day 9, the patient developed left ptosis and double vision.
A coronal view indicated the sphenoid sinus to have spread to the base of the pterygoid process with a soft tissue density lesion adjacent to the lateral wall. Coronal MRI disclosed swelling of the lateral and medial pterygoid muscles. All findings suggested sphenoidal sinusitis or tumor.
The sphenoid sinus was opened for endoscopic endonasal inspection. The sphenoid sinus showed mucosal thickness with exudation and no tumor. The diagnosis was sphenoidal sinusitis.
All ocular complications and trismus disappeared within 30 days after the operation and steroid therapy to control the progress of nerve injury. It was concluded that sphenoidal sinusitis caused the ophthalmological complications and trismus in consideration of anatomical location of the sinus, its proximity to the nerves In, N, and VI, and the pterygoid muscle.View full abstractDownload PDF (3687K)
- |<
- <
- 1
- >
- >|