Nihon Ago Kansetsu Gakkai Zasshi最新文献

[Correlation of the disk configuration with duration of illness and opening distance in patients with closed lock of the temporomandibular joint]. 颞下颌关节闭锁患者椎间盘形态与病程及开口距离的关系

Nihon Ago Kansetsu Gakkai Zasshi Pub Date : 1989-01-01

N Segami, W H Chen, K Murakami, K Fujimura, K Miyaki, T Iizuka

引用次数: 0

[Reconsideration of the bilaminar zone in the retrodiscal connective tissue of the TMJ. 2. Fibrous structure of the retrodiscal connective tissue and relation between those fibers and the disk]. 颞下颌关节椎间盘后结缔组织双层带的重新考虑。2. 椎间盘后结缔组织的纤维结构及其与椎间盘的关系。

Nihon Ago Kansetsu Gakkai Zasshi Pub Date : 1989-01-01

K Kino, Y Ohmura, E Kurokawa, S Shioda

{"title":"[Reconsideration of the bilaminar zone in the retrodiscal connective tissue of the TMJ. 2. Fibrous structure of the retrodiscal connective tissue and relation between those fibers and the disk].","authors":"K Kino, Y Ohmura, E Kurokawa, S Shioda","doi":"","DOIUrl":"","url":null,"abstract":"The fibrous structure of the retrodiscal connective tissue was investigated histologically in order to reconfirm what Rees calls the bilaminar zone. Eleven TMJs were taken from the fresh cadavers. The sections, obtained from six materials with condyle protruded, were observed mainly. The Results were as follows: The retrodiscal area was composed of the collagen fibers originating into this area from the petrotympanic fissure, from the conjunctive area of the posterior wall of the fossa with the lateral wall of the articular cavity, and from the conjunctive area of the posterior slope of the auricular tubercle with the lateral wall of the articular cavity. In the superficial layer of the retrodiscal area, these fibers crossed each other, and a few fibers jointed with these fibers from the superficial layer of the disk and from the posterior wall of the articular fossa. The arrangement of these fibers had various directions, however most of fibers tended to run medio-laterally. The fiber bundles containing many elastic fibers ran into the retrodiscal area from the petrotympanic fissure. Although these fibers connected the most medial side of the disk with the medial side of the posterior wall of the articular fossa, they had many branches composing the retrodiscal area as stayed above. The fibers were very wavy, in spite of the protruded position of the disk. So these fibers were not considered to have a role in pulling back the disk in the retruded phase of the mouth closing. New findings as to the retrodiscal connective tissue were obtain in this research. They were different from Ree's description.","PeriodicalId":77756,"journal":{"name":"Nihon Ago Kansetsu Gakkai Zasshi","volume":"1 2","pages":"43-54"},"PeriodicalIF":0.0,"publicationDate":"1989-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"13629123","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

[Analysis of complications following double contrast arthrotomography of the temporomandibular joint]. 颞下颌关节双对比层析成像并发症分析。

Nihon Ago Kansetsu Gakkai Zasshi Pub Date : 1989-01-01

A Takahashi, A Jikko, S Murakami, Y Takemori, M Fujishita, H Fuchihata

{"title":"[Analysis of complications following double contrast arthrotomography of the temporomandibular joint].","authors":"A Takahashi, A Jikko, S Murakami, Y Takemori, M Fujishita, H Fuchihata","doi":"","DOIUrl":"","url":null,"abstract":"Temporomandibular joint (TMJ) arthrography is a valuable diagnostic method to evaluate the pathology of soft tissue components of the TMJ. However, arthrography is more or less invasive technique. The aim of this study was to investigate the sort and content of injury following TMJ arthrography. The symptoms before and after the arthrography were compared. In 90 joints that underwent TMJ arthrography, complications such as pain and/or trismus were encountered in 39 joints within one month. Twenty six patients complained of the change of pain conditions including the discomfort. The most common one was the pain on mouth opening. In every joint the pain disappeared within one month without any treatment. There was a high frequency of exacerbated pain in patients with some pain before the arthrography. The change of the degree of maximum opening was recognized in 11 patients. The duration of that condition was somewhat longer than that of pain conditions. In 5 joints with late clicking, 3 developed closed lock. Other complications were swelling, disability of mastication, eczema, hearing impairment and facial paresthesia. All the symptoms disappeared within 1 week without any treatment. From these results it was suggested that TMJ arthrography has low possibility of severe damage to the TMJ although there is some possibility of injury to the bone and soft tissue by arthrographic procedures.","PeriodicalId":77756,"journal":{"name":"Nihon Ago Kansetsu Gakkai Zasshi","volume":"1 1","pages":"1-9"},"PeriodicalIF":0.0,"publicationDate":"1989-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"13634451","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

[Biomechanical study on the mechanism of the mandibular condylar fracture. 1]. 下颌髁突骨折发生机制的生物力学研究。1]。

Nihon Ago Kansetsu Gakkai Zasshi Pub Date : 1989-01-01

M Inada, T Konuma, J Shimada, Y Kato, Y Hiranuma, E Sakamoto, Y Yamamoto

{"title":"[Biomechanical study on the mechanism of the mandibular condylar fracture. 1].","authors":"M Inada, T Konuma, J Shimada, Y Kato, Y Hiranuma, E Sakamoto, Y Yamamoto","doi":"","DOIUrl":"","url":null,"abstract":"The condylar process is one of the sites predisposed to fracture clinical and experimental studies on the fracture mechanism have so far been undertaken by a number of our predecessor. However, the difference in the fracture mechanisms of intracapsular and extracapsular fracture has not completely been determined yet. In a Japanese Journal of Oral and Maxillofacial Surgery: Vol.32, 1362-1381, 1986: Shimada have previously reported the strong possibility that the direction and extend of fracture lines in the fracture of condylar process were influenced by the morphological characteristics of the condylar head. In order to verify this postulation, stress distribution patterns by the cross-sectional morphology of various types of condylar heads were investigated by two-dimensional finite element method, using 15 Indian edentulous mandibles. In this analysis, loading was applied to three directions in the model of the mandibular body, and two directions in the model of the mandibular head. The results indicated the following something. 1) With the loading in the direction of condylar head from mandibular angle, compressed stress arose on the condylar head with the surface. And with the loading in the direction of condylar head from chin and mandibular body, tugged stress arose on the condylar neck. 2) With the loading in the direction of vertical, these were conjectured that comminuted fracture arose on convex type, sagittal fracture arose on concave type and a style midway fracture arose on straight type. 3) With the loading in the direction of lateral, these were conjectured that fracture of condylar neck arose on the three types, especially the tendency was remarkable on straight type.","PeriodicalId":77756,"journal":{"name":"Nihon Ago Kansetsu Gakkai Zasshi","volume":"1 1","pages":"89-101"},"PeriodicalIF":0.0,"publicationDate":"1989-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"13635675","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

[Electromyographic study on lateral jaw movements]. [侧颌运动肌电图研究]。

Nihon Ago Kansetsu Gakkai Zasshi Pub Date : 1989-01-01

T Nakamura, K Yoshikawa, T Omae, S Inoue, S Ishigaki, T Okuda, M Akanishi, T Maruyama

{"title":"[Electromyographic study on lateral jaw movements].","authors":"T Nakamura, K Yoshikawa, T Omae, S Inoue, S Ishigaki, T Okuda, M Akanishi, T Maruyama","doi":"","DOIUrl":"","url":null,"abstract":"This study aims to analyse how jaw-closing muscle activities are modulated during lateral jaw movement. Jaw movements were recorded by Sirognathograph (Siemens Co.) and electromyograms were simultaneously recorded from bilateral masseter, anterior temporal and posterior temporal muscles in 20 young adults without any stomatognathic dysfunction. Each subject sat upright in the chair with the head unsupported. The lateral jaw movements from the intercuspal position were guided three times for each lateral excurtion (right and left). The data were recorded on magnetic tape and later analysed by use of a computer. Following variables were analysed; the number of contacted teeth, the position of contacted teeth, the muscle activities during lateral jaw movement. The results can be summarised as follows; 1) The working-side posterior temporal muscle showed obvious activity in more than 90% subjects during lateral jaw movement. However, this muscle activity was not influence by the number or position of the contacted teeth. 2) The right side masseter muscle tended to show the obvious activity during both right and left lateral jaw movement. The results of this study suggest the difference in the activities between masseter and temporal muscle during lateral jaw movement.","PeriodicalId":77756,"journal":{"name":"Nihon Ago Kansetsu Gakkai Zasshi","volume":"1 1","pages":"19-26"},"PeriodicalIF":0.0,"publicationDate":"1989-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"13633595","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

[Evaluation of inferior joint space arthrography for type III temporomandibular arthrosis (internal derangements of temporomandibular joint)]. [下关节间隙关节造影术对III型颞下颌关节病(颞下颌关节内部紊乱)的评价]。

Nihon Ago Kansetsu Gakkai Zasshi Pub Date : 1989-01-01

H Kawamura, S Sato, H Nagasaka

引用次数: 0

[Incidence of temporomandibular joint disorders in patients with malocclusion]. [错牙合患者颞下颌关节紊乱的发生率]。

Nihon Ago Kansetsu Gakkai Zasshi Pub Date : 1989-01-01

K Fushima, S Akimoto, K Takamot, T Kamei, S Sato, Y Suzuki

{"title":"[Incidence of temporomandibular joint disorders in patients with malocclusion].","authors":"K Fushima, S Akimoto, K Takamot, T Kamei, S Sato, Y Suzuki","doi":"","DOIUrl":"","url":null,"abstract":"In order to examine the relationship between the incidence of temporomandibular joint (TMJ) disorders and the occlusal problems, epidemiological surveys regarding the signs of TMJ disorders (joint noise, pain and disturbance of mandibular movement) were carried out to 149 untreated patients (54 males and 95 females) with malocclusion. The results indicated as follows: 1) Incidence of TMJ disorders was 33.6% of total samples, 27.8% of males and 36.8% of females. 2) In symptomatic subjects, the most frequent sign of TMJ disorders was joint noise (76.0%), the second was joint pain (68.0%) and the third was disturbance of mandibular movement (38.0%). 3) The incidence of TMJ disorders increased after 8 years of age, while it decreased slightly from 15 to 18 years of age and showed high frequency after 19 years of age. It was suggested that these changes were related with the occlusal configurations such as the exfoliation followed by the eruption of permanent successors or the eruption of the third molars. 4) Symmetrical anterior cross-bite malocclusion showed low incidence of TMJ disorders. In posterior cross-bite malocclusion and mandibular lateral displacement case, however, the signs of TMJ disorders were found frequently. These results suggested that the lateral shift of mandibular head in fossa may relate with the appearance of TMJ disorders.","PeriodicalId":77756,"journal":{"name":"Nihon Ago Kansetsu Gakkai Zasshi","volume":"1 1","pages":"40-50"},"PeriodicalIF":0.0,"publicationDate":"1989-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"13633600","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

[Analysis on deformity of disk associated with internal derangement of TMJ]. [椎间盘畸形合并颞下颌关节内脱位分析]。

Nihon Ago Kansetsu Gakkai Zasshi Pub Date : 1989-01-01

K Wajima, M Sannta, A Yazaki, M Ikawa, Y Sumii, H Kogai, A Suzuki, H Nakagawa, T Nomoto

{"title":"[Analysis on deformity of disk associated with internal derangement of TMJ].","authors":"K Wajima, M Sannta, A Yazaki, M Ikawa, Y Sumii, H Kogai, A Suzuki, H Nakagawa, T Nomoto","doi":"","DOIUrl":"","url":null,"abstract":"Internal derangement of temporomandibular joint has been studied mainly arthrographically about disk position, but it was reported that morphologic alterations and histo-chemical changes of disk were frequently observed in joints with internal derangement. The aim of this investigation was to study the relationship between deformity of disk and the kind of internal derangement of TMJ (anterior disk displacement with or without reduction). We analysed arthrographically the configuration of anterior displaced disk according to the criteria of Westesson. Deformity of disk was seen in 35 joints in 60 joints (58.3%) associated with anterior disk displacement with reduction, and 51 joints in 66 joints (77.3%) without reduction. Statistically significant difference existed between the distribution of disk configuration in with-reduction and without-reduction. We analysed the relationship between distribution of disk configuration and age, clicking period and locking period. In cases long suffering from clicking and locking, no-deformed disk were seen, and any certain type of deformed disk did not increase. From above results it was suggested that there was a strong relationship between distribution of disk configulation and types of anterior disk displacement (with or without reduction).","PeriodicalId":77756,"journal":{"name":"Nihon Ago Kansetsu Gakkai Zasshi","volume":"1 1","pages":"139-50"},"PeriodicalIF":0.0,"publicationDate":"1989-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"13633706","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

[Relationship between orofaciocranial morphologic factors and electromyographic activities of the masticatory muscles]. 颌面颅形态学因素与咀嚼肌肌电图活动的关系。

Nihon Ago Kansetsu Gakkai Zasshi Pub Date : 1989-01-01

T Morimitsu, T Nokubi, T Nagashima, M Yoshida, K Ikebe, Y Okuno

{"title":"[Relationship between orofaciocranial morphologic factors and electromyographic activities of the masticatory muscles].","authors":"T Morimitsu, T Nokubi, T Nagashima, M Yoshida, K Ikebe, Y Okuno","doi":"","DOIUrl":"","url":null,"abstract":"The purpose of this study is to evaluate the relationship between orofaciocranial morphologic and functional factors. The lateral cephalograms of 10 normal subjects were taken and traced. The authors divided cephalometric parameters into linear and angular measurements. Electromyographic (EMG) activities were recorded from bilateral anterior temporal and masseter muscles during tapping movement. Then the total muscle activity of both muscles, and the masseter muscle activity ratio in the total muscle activity were measured. The correlation coefficients between cephalometric measurements and EMG parameters were analyzed. The results of this study are as follows: 1) The total muscle activity revealed positive correlation with all the linear measurements. Especially, the total muscle activity significantly correlated with the size of mandible, such as Co-Go and Go-Me. 2) The total muscle activity showed a tendency to increase when the angles among SN plane, FH plane, maxillary base plane and mandibular border plane became small, and when S-N-A and S-N-B became large. 3) There was no correlation between masseter muscle activity ratio and cranial morphologic measurments. But masseter muscle activity ratio correlated with tooth position and anteroposterior inclination of the anterior teeth. These results suggest that the consideration of the relationship between orofaciocranial morphologic factors and EMG parameters is necessary for examining the masticatory muscle activity.","PeriodicalId":77756,"journal":{"name":"Nihon Ago Kansetsu Gakkai Zasshi","volume":"1 1","pages":"162-71"},"PeriodicalIF":0.0,"publicationDate":"1989-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"13633708","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

[A case of complete rupture of the righ TMJ disc]. [1例右侧TMJ椎间盘完全破裂]。

Nihon Ago Kansetsu Gakkai Zasshi Pub Date : 1989-01-01

A Yamaguchi, K Nishimura, K Kosaka, T Kamitaki, T Okamura, K Koide, S Hatate, N Kitamura, H Takase, K Maeda

引用次数: 0