Tsurumi shigaku. Tsurumi University dental journal最新文献

{"title":"[Case of a neurotic patient complaining about her facial disfigurement after prosthetic therapy].","authors":"H Nakamura","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Problems accompanied with dental practice of a neurotic patient who complained about her facial disfigurement after prosthetic treatment were discussed. Through this discussion, the necessity of understanding mental state and personality of this kind of patient was pointed out. And the need of systematic study of these neurotic cases with relation to dental practice including the method of smooth liaison with a psychiatrist was suggested. Also, the process leading the patient to have a firm belief of having a disfigured face was discussed.</p>","PeriodicalId":76770,"journal":{"name":"Tsurumi shigaku. Tsurumi University dental journal","volume":"15 2","pages":"329-33"},"PeriodicalIF":0.0,"publicationDate":"1989-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"13842620","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}

{"title":"[Study on gypsum hardener].","authors":"Y Kokubo,&nbsp;A Wada,&nbsp;H Takase,&nbsp;Y Nagano,&nbsp;A Nozaki,&nbsp;N Yanaka,&nbsp;M Mizuno,&nbsp;S Miyamoto,&nbsp;Y Nakamura,&nbsp;Y Imai","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>The purpose of this study was to search for an appropriate condition for shortening the treatment time of gypsum hardener, Plaster Aid. In order to keep the increased strength of plaster with this new hardener, compressive strength and dimensional change in various conditions of heating temperature, heating time and drying time were examined. The following results were obtained. 1. High compressive strength was maintained in the condition of 70 degrees C of heating temperature, with more than 15 minutes of heating time and more than 15 minutes of drying time. In this condition up to 90 minutes could be saved in comparison with the conventional method. 2. Plaster models had a tendency to shrink in the condition of 70 degrees C of heating temperature.</p>","PeriodicalId":76770,"journal":{"name":"Tsurumi shigaku. Tsurumi University dental journal","volume":"15 2","pages":"323-7"},"PeriodicalIF":0.0,"publicationDate":"1989-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"13782692","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}

{"title":"[The macroscopic and microscopic study of the human lateral pterygoid muscle].","authors":"H Naohara","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>The purpose of this investigation was to study the morphology of the human lateral pterygoid muscle and its attachment to the temporomandibular joint. A total of twenty-five lateral pterygoid muscles, twenty for macroscopic and five for microscopic study, were obtained with their temporomandibular joints from eighteen adult cadavers. The results were as follows: 1) The lateral pterygoid muscles observed in this study were classified into three types based on the number of their heads; 65% of the macroscopic specimens had two heads (superior and inferior), 20% three heads (superior, inferior and medial), and 15% a single head. 2) The fascicular architecture of the single-headed specimens was quite simple and so the orientation of their fasciculi was parallel or radial to the line of pull. In their course the fasciculi of the two and three-headed specimens showed a relatively complicated architecture, having a large number of crossover fibers between each head. 3) In all specimens observed macroscopically, the uppermost fasciculi were inserted into the articular disc and capsule of the temporomandibular joint and the rest were inserted into the pterygoid fovea of the neck of the mandible, although no clear boundary could be found between them on their lateral surfaces. The bulk of the fasciculi which were inserted into the articular disc relative to the total amount of the lateral pterygoid muscles was estimated as being in the range of one fifth to one tenth. 4) From the microscopical examination of the specimens the cross-sectional area of the fasciculi which were inserted into the articular disc was about 3 mm2 at their attachment and this corresponded to 30% of the superior head and 3% of total amount of the lateral pterygoid muscle. 5) The fasciculi attached to the articular disc were derived from the superior and medial head of the lateral pterygoid muscle and from the temporalis muscle. In two cases of the twenty examined macroscopically, the fasciculi derived from the inferior head of the lateral pterygoid muscles were inserted into the articular disc.</p>","PeriodicalId":76770,"journal":{"name":"Tsurumi shigaku. Tsurumi University dental journal","volume":"15 1","pages":"1-26"},"PeriodicalIF":0.0,"publicationDate":"1989-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"13768702","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}

{"title":"[An experimental study of the measuring system of the mean film thickness of white silicone through image analysis].","authors":"M Tsuruoka","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Clinically, the fitness test of a denture base employing white silicone has been widely used, and there are several methods for assessing the results. However, none of the conventional methods of assessment are completely objective or quantitative. For solving these problems, a new system has been developed for measuring the mean film thickness of white silicone based on image analyzing. There are several factors that affect the results of the fitness test of the denture base, such as the shape of the denture, the condition of the mucosa within denture bearing area, bite force and the state of occlusal contact. Then, using the new system, these factors were examined for clinical application of the mean film thickness of white silicone. The experiments are composed of three stages. In the first stage, the white silicone was pressurized between two of tablets involved in three types, with a pressurizer. These data resulted in a regression equation applying the rheological equation. In the second stage, pressurizing tests were performed on the models of jaw mucosa with uniform compressibility. The models were categorized into three types according to their compressibility. A result was the more compressible the models of jaw mucosa are, the thicker the white silicone film is. In the third stage, the compressibilities were mixed in the models of jaw mucosa. In the pressurizing test, the compressing dies were modeled on the denture base. Five loading points were established on the surface. Correlation between data obtained from the results of the pressurizing test at each loading point was investigated. The results from these experiments were as follows. 1. The regression equation was established from the compressing test of white silicone between tablets of rigid type. H = 0.236 (r1r2/square root of P) -0.0008 R = 0.977 H: mean film thickness of white silicone R: coefficient of correlation P: loading volume r1: 1/2 of the major side of the each tablet r2: 1/2 of the minor side of the each tablet Units are expressed in the C. G. S system. The film thickness was more highly correlated with the distance to the open system of each tablet than the area.</p>","PeriodicalId":76770,"journal":{"name":"Tsurumi shigaku. Tsurumi University dental journal","volume":"15 1","pages":"139-61"},"PeriodicalIF":0.0,"publicationDate":"1989-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"13768622","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}

{"title":"[Changes of bacterial flora on inbred mouse strains using experimental dental caries model].","authors":"M Nakano","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>In the experimental dental caries model using inbred mouse strains, the bacterial flora of lower molars were investigated during the process of caries induction to examine the differences of bacterial flora between the caries susceptive mouse strains (BALB/cA, C57BL/6N) and the caries resistant mouse strain (C3H/HeN), as well as the relation between the bacterial flora and Streptococcus faecalis that seemed to be the pathogen of caries on this caries model. The total cultivable bacterial number immediately after weaning (3 weeks old) was larger in the caries susceptive strains than in the caries resistant strain. The composition of Gram(+) cocci, Gram(+)rods and Gram(-)rods varied in each strain and Gram(-)cocci were not isolated from any of the strains. The proportion of Gram(+)cocci to the total cultivable bacterial number was larger in the caries susceptive strains than in the caries resistant strain, while S. faecalis was the most predominant species in Gram(+)cocci in all strains. It suggests that S. faecalis existed indigenously on the lower molars of mice at the time of weaning (3 weeks old). The total cultivable bacterial number increased in all strains as feeding with Diet-2000 which contains 30% sucrose started. The number reached its peak on the fifth week, and it either remained the same or slightly declined after that. The number of S. faecalis also reached the peak between third and fifth week. The order of 10(5) - to 10(6) S. faecalis was isolated from the caries susceptive strains, and the order of 10(4) from the caries resistant strain throughout the experimental period. It suggests that C3H/HeN (the caries resistant strain) mice have certain caries resistant factors in the genetic background. Toward the end of the experimental period, S. acidominimus in the caries susceptive mice and Staphylococcus sciuri in the caries resistant mice increased and replaced S. faecalis. Gram(+)rods also increased in the caries susceptive strains. It seems that Gram(+)rods have some relation with the progress of advanced dental caries.</p>","PeriodicalId":76770,"journal":{"name":"Tsurumi shigaku. Tsurumi University dental journal","volume":"15 1","pages":"235-47"},"PeriodicalIF":0.0,"publicationDate":"1989-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"13767741","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}

{"title":"[Changes in the circulation and blood catecholamines following electrical stimulation to the infraorbital nerve in rabbits which had received a long-term administration of imipramine].","authors":"T Nakajima","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>The purpose of the present study was to observe how circulation would be affected with imipramine. An experimental model of rabbits which had received a long-term administration of imipramine was prepared, and electrical stimuli were applied to the infraorbital nerve to determine: i) the circulatory responses (the mean femoral arterial blood pressure, the regional cortical blood flow in the marginal gyrus measured by a hydrogen clearance method and the carotid blood flow measured by using an electromagnetic blood flow meter): and ii) the catecholamine levels in the femoral arterial blood and in the brain tissues, and the imipramine level in the left-ventricular blood measured by high performance liquid chromatography. After norepinephrine (4 micrograms/kg) was infused into the femoral vein, the electrical stimuli were applied to the infraorbital nerve to determine circulatory responses. The rabbits were initially anesthetized with a mixture of nitrous oxide, oxygen and halothane during the operation for the placement of the measuring device. During measurement the animal were lightly anesthetized with the same gas under spontaneous respiration through a tracheal cannula. The data obtained from the group of rabbits to which imipramine had been administered were compared with those obtained from the control group. The results of the present study are as follow: 1) The cerebral blood flow in both groups increased significantly (p less than 0.05, p less than 0.01) following the application of the electrical stimuli to the infraorbital nerve. When the same stimuli applied after norepinephrine had been infused into the femoral vein the cerebral blood flow was further increased (p less than 0.01). 2) The natural norepinephrine level in the femoral arterial blood increased significantly (p less than 0.001) in the imipramine group following the application of the electrical stimuli. 3) Although the natural norepinephrine level in the femoral arterial blood increased following the application of the electrical stimuli, the mean femoral arterial blood pressure and the carotid blood flow decreased significantly (p less than 0.05) in the imipramine group. It is considered that the decreases of the blood pressure and the cardiac blood flow were probably due to the reduction of the cardiac output.</p>","PeriodicalId":76770,"journal":{"name":"Tsurumi shigaku. Tsurumi University dental journal","volume":"15 1","pages":"49-62"},"PeriodicalIF":0.0,"publicationDate":"1989-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"13767745","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}

{"title":"[Diagnosis and treatment of fibrous adhesion into upper joint compartment of the TMJ. Part 2. Arthroscopic findings and arthroscopic sweeping and lysis].","authors":"T Kondoh,&nbsp;K Kobayashi","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>A fibrous adhesion into upper joint compartment of the TMJ is indicated by a secondary pathological condition of the disk displacement. A fibrous adhesion increases resistance to motion in the joint because condyle translation disrupted. The treatment for this condition is too difficult. On this paper, we presented to arthroscopic findings of 4 cases of the fibrous change and fibrous adhesion into upper joint compartment of the TMJ (1) and arthroscopic sweeping as the treatment procedure (2). On these cases, we compared double contrast arthrotomographic findings with arthroscopic findings (3). (1) On the arthroscopic findings, banddle like fibrous adhesion, wide areal fibrous adhesion, and wide areal fibrous change of the articular surfaces were observed. These findings varied to case by cases. (2) The arthroscopic sweeping and lysis performed on this four cases. The clinical symptoms prior to arthroscopic surgery, improved post surgically in all cases. (3) The fibrous lesions in the upper joint compartment was presumed by double contrast arthrotomography that demonstrated by arthroscopy.</p>","PeriodicalId":76770,"journal":{"name":"Tsurumi shigaku. Tsurumi University dental journal","volume":"15 1","pages":"173-81"},"PeriodicalIF":0.0,"publicationDate":"1989-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"13768624","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}

{"title":"[The report of the 12th and 13th clinical practical training of the Tsurumi University School of Dental Medicine].","authors":"T Toyohara,&nbsp;N Hanamura,&nbsp;Y Kurachi,&nbsp;T Yoshida,&nbsp;A Kohno,&nbsp;T Hosoi","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>This report concerns the state of the patients and the progress of the 12th and 13th clinical practical training. A questionnaire was carried out with the trainees of the 13th clinical practical training and their leaders. Consequently it was learned that a trainee was in charge of ten patients on the average a year. He was able to complete the treatments of 3.5 patients, but was obligated to discontinue them for 1.4 patients, while handling over treatments for 5.2 patients to the next year's trainees or doctors. The progress of the clinical practical training was slow during the first 9 months but the pace increased rapidly during the last 3 months. The results of the questionnaire showed 37% of the trainees were satisfied with the present clinical practical training, but 17% of the trainees were not satisfied. On the other hand 15% of the leaders were satisfied with it, but 48% of the leaders were not satisfied.</p>","PeriodicalId":76770,"journal":{"name":"Tsurumi shigaku. Tsurumi University dental journal","volume":"15 1","pages":"201-9"},"PeriodicalIF":0.0,"publicationDate":"1989-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"13768626","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}

{"title":"[Diagnosis and treatment of fibrous adhesion into upper joint compartment of the TMJ. Part 1. Double contrast arthrotomographic findings].","authors":"K Kobayashi,&nbsp;T Kondoh","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>A fibrous adhesion into upper joint compartment of the TMJ is indicated by a secondary pathological condition of disk displacement. The fibrous adhesion increases resistance to motion in the joint because the condyle translation has been disrupted. Fibrous adhesion cases resist splint therapy, manipulation technique and manipulation-while-pumping the upper joint compartment. Diagnosis of fibrous adhesion into upper joint compartment is important for internal derangement of the TMJ. The diagnosis depends on information from double contrast arthrotomography of the TMJ. But double contrast arthrotomography findings of fibrous adhesion into upper joint compartment of the TMJ have been recognized in few reports. We have described the varied conditions of the fibrous adhesion into the upper joint compartment of the TMJ by double contrast arthrotomographic findings. These cases confirmed the fibrous adhesion into the upper joint compartment of the TMJ by arthroscopy. Double contrast arthrotomographic findings were as follows: 1. Narrow fibrous band-like structure is observed into upper joint compartment of the TMJ. 2. A partial expansion of the upper joint compartment can be seen with a contrast medium injection. Also positional change of this stenosis decreases in both open and closed jaw positions.</p>","PeriodicalId":76770,"journal":{"name":"Tsurumi shigaku. Tsurumi University dental journal","volume":"15 1","pages":"163-71"},"PeriodicalIF":0.0,"publicationDate":"1989-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"13768623","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}

{"title":"[Composite resin cores. Part 1. Comparison of various composite resin cores].","authors":"S Miyamoto,&nbsp;Y Kokubo,&nbsp;T Kamiyama,&nbsp;S Noguchi,&nbsp;N Hanamura","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>This study evaluated compressive strength, sealing ability and tensile bond strength of various materials of composite resin cores. 1. Compressive strength of the various materials, after they were placed in air for 24 hours, underwent thermal cycling testing, or were soaked in water for 2 weeks, ranged from 2000 kgf/cm2 to 2900 kgf/cm2. 2. The sealing ability after thermal cycling testing and being soaked in water for 2 weeks varied among the materials. 3. The bond strength of all composite resin core materials to dentin was less than 50 kgf/cm2. 4. In this study, no relationship was found between sealing ability and tensile bond strength.</p>","PeriodicalId":76770,"journal":{"name":"Tsurumi shigaku. Tsurumi University dental journal","volume":"15 1","pages":"109-18"},"PeriodicalIF":0.0,"publicationDate":"1989-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"13768620","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}