1 0 0 0 OA 顎関節症の臨床的研究
1 0 0 0 OA イオン導入について
1 0 0 0 OA 各種印象法による作業用模型の寸法精度に関する研究 アンダーカットが寸法精度に及ぼす影響
- 著者
- 和田 邦子
- 出版者
- 口腔病学会
- 雑誌
- 口腔病学会雑誌 (ISSN:03009149)
- 巻号頁・発行日
- vol.59, no.2, pp.518-540, 1992 (Released:2010-10-27)
- 参考文献数
- 31
- 被引用文献数
- 3 2
The purpose of this research was to evaluate the clinical acceptability of various impression thechniques by comparing the dimensional accuracy of their working casts. An original metallic model was designed for this experiment. It has reference points to overlap and compare the master model and the working casts for measuring their dimensional accuracy under the same condition. The amount of distortion in each area of the working casts was examined by the measuring points within the model. The master model simulated an abutment for a full veneer crown with undercuts between the adjacent teeth. It was planned so that the amount of undercuts and distances between the adjacent teeth could be changed. As a result, a small distortion of the working casts due to the undercuts was observed by the technique using an individual tooth tray and polysulfide rubber base impression material. There was no significant dimensional change in the working casts made with silicone rubber base material. For the working casts made by hydrocolloid-alginate combination technique, the dimensional change was greater and distortion was observed in the abutment cast when the undercuts of the adjacent teeth were great. However, the distortion was less when the undercuts were small.
1 0 0 0 OA 舌の血管腫形成を主症状とした遺伝性出血性血管拡張症 (Osler氏病) の一例について
1 0 0 0 OA 左右的な下顎位の変化が咬筋筋活動に及ぼす影響
- 著者
- 吉野 敏明
- 出版者
- 口腔病学会
- 雑誌
- 口腔病学会雑誌 (ISSN:03009149)
- 巻号頁・発行日
- vol.63, no.1, pp.70-87, 1996-03-31 (Released:2010-10-08)
- 参考文献数
- 35
- 被引用文献数
- 2 2
The investigation of the physiological response of masticatory muscle which is associated with the perception of the mandibular lateral deviation is clinically important. Therefore, the effects of various lateral mandibular deviation on the masseter muscle function were investigated on five healthy subjects. The mandibular position was deviated 0.5, 1.0, 1.5, 2.0 and 3.0 mm to the right and left from a reference position corresponding to the rest position. The mandible was passively retained in each test position by means of a bite block. Electromyographic activity (background activity) was recorded with bipolar surface electrodes applied to the right and left masseter muscles. Jaw-jerk reflex was evoked by a reflex hammer, and motoneuron activity was indirectly examined.The background activity as well as the amplitude of the jaw-jerk reflex on the mediotrusive side mainly increased in proportion to the mandibular deviation. However, most subjects showed no significant change about 3 mm from the reference position in the background activity and about 2 mm in the range of muscle activity evoked by the jaw-jerk reflex. These results suggested that the masseter jaw-jerk reflex may assist clinical examination of small mandibular deviations.
1 0 0 0 OA 計測による人の歯列 (顎模型) の性別判定法
1 0 0 0 OA 脳卒中患者の循環動態
- 著者
- 植松 宏
- 出版者
- 口腔病学会
- 雑誌
- 口腔病学会雑誌 (ISSN:03009149)
- 巻号頁・発行日
- vol.66, no.2, pp.165-169, 1999-06-30 (Released:2010-10-08)
- 参考文献数
- 11
1 0 0 0 OA 抜歯による上顎洞穿孔症例の臨床的検討
- 著者
- 平田 康 木野 孔司 長岡 俊哉 宮本 亮三 吉増 秀實 天笠 光雄
- 出版者
- 口腔病学会
- 雑誌
- 口腔病学会雑誌 (ISSN:03009149)
- 巻号頁・発行日
- vol.68, no.3, pp.249-253, 2001-09-30 (Released:2010-10-08)
- 参考文献数
- 10
- 被引用文献数
- 19 20
Oro-maxillary sinus perforation occurs occasionally at the extraction of a maxillary tooth, and it may be a cause of maxillary sinusitis or antro-oral fistula. Our purpose was to investigate the most frequent site of perforation, and to understand the clinical course of patients after perforation.We examined 2, 038 maxillary teeth extracted from 1, 337 patients (473 males and 864 females) at the First Department of Oral and Maxillofacial Surgery, Tokyo Medical and Dental University, from January 1991 to December 1993.Perforation occurred in 77 of all 2, 038 teeth (3.8%) . Of these, 38 teeth were from males (38/733 ; 5.2%), and 39 were from females (39/1, 305 ; 3.0%) . The perforation rate was significantly higher in males.Perforation occurred most often with extraction of an upper first molar, and in the third decade of life. The perforation rate gradually decreased with higher age.We classified 38 cases into 3 categories according to panorama X-P : 1) The tip of the root crossed over the bottom line of the maxillary sinus (29 cases), 2) Not crossed over distinctly (4 cases), 3) Just lie on, or whether the tip of the root crossed over the bottom line of the maxillary sinus was not distinct (5 cases) .As to treatment, 30 perforations (39.0%) closed spontaneously in the course of observation, irrigation with physiological saline was used in 43 cases (55.8%), radical sinusotomy accompanied by closure of the perforation was performed in 4 cases, and only flap closure was used in 7 cases. There were no cases of relapse.
1 0 0 0 OA ウ蝕象牙質の硬さと着色および細菌侵入度との関係
1 0 0 0 OA Comforter (「ゴム」乳首) ノ乳齒穹ニ及ボス影響ニ就テ
- 著者
- 高橋 新次郎 小原 博司
- 出版者
- 口腔病学会
- 雑誌
- 口腔病學會雜誌 (ISSN:03009149)
- 巻号頁・発行日
- vol.9, no.3, pp.251-259, 1935 (Released:2010-12-08)
- 参考文献数
- 7
Until quite recently, it has been regarded in pediatric circles that the continuous use of the comforter may be very harmful to children, owing to various reasons such as the continuous and superfluous flow of saliva, due to the comforter, which may lead to a disturbance in appetite during feeding- time, and the lack of disinfection has also been regarded as making the comforter a means of conveying bacteria into the mouth to cause different sorts of stomatitis.But when we look at this problem from an orthodontic point of view, an additional grievance, which may be classed as an etiological factor of malocclusion, should be added to these.Hardly any investigations on this special line have as yet appeared in Japan, but in Europe and the United States quite a few has been interested in this subject and results of their investigations were reported.In 1930, Dr. S. Dreyfus in Switzerland wrote an article entitled “Infant Feeding”, the contents of which may be of some interest to us. He states that bony deformation may result from the use of the ordinary teat in artificial feeding, through compressing the teat with the tongue (See Fig.1) . The effects of this action of the tongue would be to project the anterior part of the maxilla in V-shaped form, and to raise the median part of the palate.It would also produce a protrusion of the maxillary incisor, leading to an ogival or gothic palate. By the elevation of the palate, the palato-frontal distance is diminished, which in consequence diminishes the height of the nasal cavities and leads to a deviation of the septum narrowing the nesal cavities as well. Insufficient work of the lips, according to him, results in flabby lips, or in their atrophy.He adds to say that the insufficient exercise of suprahyoid and masticatory muscles causes a retardation of the mandible, and in consequence the teeth do not find the normal space to arrange themselves, producing the crowd of the mandibular anterior teeth. Also by reason of want of exercises of the masticatory muscles, the upper part of the face, and the part corresponding to the skull and the mandible, where these muscles have their insertions, undergo delays in their development.The mechanicle influences of the comforter may be regarded as the same as those of the ordinary teat during artificial feeding, but it must be borne in mind that the comforter is in far more continuous use than the teat and therefore it is easily conceived that much damage should be done.Fortunately, we had a chance to make statistical investigations in children using the comforter and the results of the examination were as follows : —1) Most of the children using the comforter are found to be artificially fed.2) The use of the comforter may be regarded as an etiological factor, leading to deformities such as elevation of the palate, V-shaped narrow arch, protrusion of the upper incisors, open bite, flabby lips, and mouthbreathing.3) Bony deformity is clearly observed, even when the comforter is used, preceding the eruption of the deciduous teeth.4) Early discontinuance of the use of the comforter will in most cases act as a corrective measure to malocclusion.
1 0 0 0 OA 最近の日本人小児に見られる顎顔面頭蓋の発育変化
1 0 0 0 歯科心身症への新しいアプローチ
1 0 0 0 OA 各種アマルガム用研磨材 (遊離砥粒) の研磨能率
1 0 0 0 OA 発癌遺伝子
- 著者
- 土田 信夫
- 出版者
- 口腔病学会
- 雑誌
- 口腔病学会雑誌 (ISSN:03009149)
- 巻号頁・発行日
- vol.52, no.4, pp.607-616, 1985 (Released:2010-10-27)
- 参考文献数
- 38
1 0 0 0 OA 噛みしめと上肢等尺性運動の関連性に関する研究
- 著者
- 上野 俊明
- 出版者
- 口腔病学会
- 雑誌
- 口腔病学会雑誌 (ISSN:03009149)
- 巻号頁・発行日
- vol.62, no.2, pp.212-253, 1995-06-30 (Released:2010-12-08)
- 参考文献数
- 181
- 被引用文献数
- 7 6
To investigate the relationship between teeth clenching in Intercuspal position and isometric shoulder adduction movement in 12 normal subjects, the muscle strength and electromyogram (EMG) of the seven muscles concerned were measured by using Cybex 6000 Extremity Testing and Rehabilitation System and surface EMG analyzing system. Normalized peak torque (n-PT) and normalized average torque (n-AT) were analyzed to find muscle strength. Normalized integrated EMG (n-iEMG) was analyzed to find muscle activity.The results were as follows :1. For n-AT, the value in 100 %MVC significantly increased by 5.4% as compared with that in the rest position (RP) .2. There was a significant positive correlation between biting force of intercuspal position (ICP), 20%MVC, 50%MVC and 100%MVC and muscle strength of n-PT and n-AT.3. For n-iEMG, the value of latissimus dorsi, teres major, triceps brachii and forearm extensor muscles in 100%MVC significantly increased by 8.4%, 13.0%, 9.3% and 18.9% respectively as compared with that in RP.4. There was a significant positive correlation between biting force of intercuspal position (ICP), 20%MVC, 50%MVC and 100%MVC and muscle activity of pectralis major, latissimus dorsi, teres major, biceps brachii, triceps brachii, forearm extensor and forearm flexor muscles.
- 著者
- 三浦 維四 桜井 実
- 出版者
- 口腔病学会
- 雑誌
- 口腔病学会雑誌 (ISSN:03009149)
- 巻号頁・発行日
- vol.23, no.2, pp.136-142, 1956
In dental practice, whether brazing is easy or not is important. A brazing process for titanium in air was studied using town-gas as a heat-source.<BR>Due to the gas-active properties of titanium, it seems to be necessary to braze it at a low temperature.<BR>The alloys and the fluxes for low temperature brazing were studied by us and it was found that some alloys in Table 1 and 2, and fluxes in Fig, 3-7 were satisfactory for this purpose.
1 0 0 0 OA 難治性口腔・顎・顔面痛について
- 著者
- 鈴木 長明
- 出版者
- 口腔病学会
- 雑誌
- 口腔病学会雑誌 (ISSN:03009149)
- 巻号頁・発行日
- vol.68, no.1, pp.1-7, 2001-03-31 (Released:2010-10-08)
- 参考文献数
- 33
1 0 0 0 OA 小児用義歯の咬合位の決定とその経年的変化について
1 0 0 0 シュレーデル, トレビッチュ氏萬能咬交器ヲ以テスル咬交ノ實施
- 著者
- Trebitsch F.
- 出版者
- 口腔病学会
- 雑誌
- 口腔病學會雜誌
- 巻号頁・発行日
- vol.6, no.3, pp.223-225, 1932
