著者
荒川 仁志 鷹股 哲也 田村 利政
出版者
松本歯科大学学会
雑誌
松本歯学 (ISSN:03851613)
巻号頁・発行日
vol.19, no.1, pp.54-61, 1993-04-30

The reasons for difficulties involving the distal extension removable partial detures is their undue movement under the occlusal forces. The supporting structures in removable partial dentures (abutment teeth and residual ridges) are "living things" and are subjected to forces. To a great extent the forces accruing through a removable restoration can be widely distributed, directed, and minimized by the selection, design, and location of components of the removable partial denture and by developing a harmonious occlusion. For these reasons, mesial rest I bar clasp (RPI) is the most commonly used retainers for distal extension removable partial dentures. The RPI clasp allows release from an abutment tooth when occlusal forces are applied to the denture base, and the clasp gives good resistance to occlusal displacement, covers a minimun of tooth structure, and in most situations shows less metal than other clasps. However, when an insufficient vestibular depth will not allow the I bar to be released from tissue, undercut below the abutment teeth for the I bar may be so extensive that it is uncomfortable for the patient. In these situations, the RPI clasp cannot be used. This paper presents the clinical considerations about the RPA clasp serving as the RPI clasp.
著者
緒方 貴美子 大澤 雅樹 荒井 敦 山田 一尋
出版者
松本歯科大学学会
雑誌
松本歯学 (ISSN:03851613)
巻号頁・発行日
vol.38, no.1, pp.30-35, 2012-04-30

The report describes orthodontic treatment of a 24- year 11 months old female patient with skeletal mandibular protrusion and large lower facial height.The facial profile was concave type because of the mandibular overgrowth. The maxillary incisors were labially inclined and the molar relationship was Angle Class III. This patient was diagnosed as having mandibular protrusion and large lower facial height. After extraction of the maxillary first premolars, 0.018 inch pre−adjusted edgewise brackets were placed to treat the compensated upper incisor inclination and minor crowding. Orthognathic surgery , sagittal splitting ramus osteotomy, was performed at 26 years 10months and genioplasty was performed at the removal of mini−plate fixation of the mandible at 27 years 8 months. After post−surgical orthodontic treatment, the facial profile was significantly improved, and an acceptable occlusion was achieved. No relapse was observed after two years of retention.

2 0 0 0 OA 壊死性筋膜炎

著者
山岡 稔
出版者
松本歯科大学学会
雑誌
松本歯学 (ISSN:03851613)
巻号頁・発行日
vol.22, no.3, pp.233-244, 1996-12-31

Bacterial resistance to antimicrobial agents increases rapidly outside as well as in hospitals. Antimicrobials may remove sensitive organisms from the bacterial flora, but they also foster the establishment of a resistant strain, not only inducing infection by bacteria which had not previously been considered pathogens, but also preventing spontaneous healing. Although necrotizing fasciitis has been seen in the past 20 years throughout the world, it remains unclear which cases are attributable to new forms of infectious disease because no data are available on their incidence. Regional clusters of cases of necrotizing fasciitis in England and Norway suggest the differential geographic distribution of certain bacteria with high toxicity, such as beta-hemolytic Streptococcus (mainly invasive group A Streptococcus). For the most part, gram-negative rods and anaerobes were simultaneously isolated from tissue fluid cultures. Necrotizing fasciitis occurs within 24 hours after the onset of cellulitis. The progression of necrotizing fasciitis is usually rapid, resulting in widespread gangrene of the subcutaneous fat and fascia around the scalp and into the deep neck spaces. Crepitus, cutaneous anesthesia due to gas bubbles in the soft tissues, and foul-smelling gray watery discharge are found. Some cases are seen as post-operative infection after maxillofacial surgery. Frequently, septic shock, mediastinitis and multiple organ failure are associated with necrotizing fasciitis, leading to a fatal outcome. Some patients have a history of systemic diseases, particularly those associated with compromised status, accounting for the increased risk of necrotizing fasciitis. In some cases, however, there is no such history. This suggests that the toxicity of the bacteria influences the onset of this disease in addition to the widely accepted risk factor of compromised host. Computed tomography can be diagnostic when there is evidence of gas bubbles in the deep tissue even in the absence of crepitation, foetor, and anesthesia of the skin. Abnormally elevated C-reactive protein concentration is a sensitive quantitative measure of the inflammatory response associated with necrotizing fasciitis. Necrotizing fasciitis requires prompt surgical referral for immediate debridement to reduce necrotic tissue and expose anaerobes to oxygen, followed by antibiotics such as clindamycin. The precription of antibiotics alone is not helpful because of the ischaemic focus in necrotic tissue. One of our patients developed septicemia, but all of our patients including the one with septicemia recovered fully without skin grafting. Our findings point to the clinical significance of the computed tomographic findings and débridement associated with eradication of gas bubbles. The patient without objective findings may be misdiagnosed as having a form of cellulitis, such as Ludwigs angina. Any patient with cellulitis should be referred for an early surgical evaluation to prevent the development of the disease and dyspnea due to pharyngeal edema. Prompt evaluation and surgical treatment might reduce the overall mortality in necrotizing fasciitis. It was recently noted that invasive streptococcal infection is associated with a substantial risk of transmission in households and health care institutions. Infections seen throughout the world should be continuously and carefully reviewed.
著者
矢ヶ崎 崇 望月 雅樹 吉田 潤一郎 中嶌 哲 鹿毛 俊孝 千野 武広 水本 恭史 出口 敏雄
出版者
松本歯科大学学会
雑誌
松本歯学 (ISSN:03851613)
巻号頁・発行日
vol.11, no.1-2, pp.123-128, 1985-08-31

A case of mandibular prognathism with open bite in a 18-year old girl was presented, which was treated by anterior alveolar osteotomy of the mandible combined with genioplasty. The procedure should be carefully planned with the use of analysis of dental casts, radiographs, split-photo techniques and other records, and has many advantages that will promise satisfactory results when the indication is correct, as shown in this case.
著者
千野 武広
出版者
松本歯科大学学会
雑誌
松本歯学 (ISSN:03851613)
巻号頁・発行日
vol.10, no.1, pp.1-16, 1984-06-30

The exposure of medical care staff to viral hepatitis is well known and the preventive measures against infection by viral hepatitis in the hospital have been presented as one of the important items on the agenda of the National Japan Conference of the Directors of Dental College Hospitals on several occasions. Current status at each Dental College Hospital was reported and discussed. In the present report, in addition to the results of surveys on infection by type B hepatitis virus at each Dental College Hospital, current status of the preventive measures against infection by viral hepatitis in each of these hospitals are reported. Survey data reported by Tohoku University School of Dentistry, Showa University School of Dentistry, Nippon Dental University, Josai Dental University, Kyushu Dental College, Kagoshima University Faculty of Dentistry and our College were used as referece. According to these surveys, it seems that dentists and predoctoral students in the Dental College belong to a high risk group for hepatitis B infection. This would indicate that the college or university, as an educational institution, should provide the students with sufficient training regarding the nature of HB hepatitis, as well as preventive procedures. The countermeasures for the infection by viral hepatitis in the hospital have been practiced in each Dental College and University Hospital according to the Medical Institution Guidelines for Type B Hepatitis. Those who engage in dental care should sufficiently recognize the danger of nontransvenous infection and practice necessary preventive measures to avoid infection.
著者
武井 賢郎 TAKEI KENRO
出版者
松本歯科大学学会
雑誌
松本歯学 = Journal of the Matsumoto Dental University Society (ISSN:03851613)
巻号頁・発行日
vol.40, no.1, pp.40-49, 2014-06-30

要旨【背景と目的】痛みは組織の障害や疾患を認識させる重要な感覚であるが,不快感や機能障害をもたらすことが多くQOL(Quality of Life)の低下につながる.しかしそのような痛みは,スポーツ等他の事に熱中している時は認知が低下するという事例が多数報告されているため,痛みの認知は行動や情動と密接な関係があることが示唆される.そこで,多様な条件を加えた時の侵害刺激に対する認知程度をVAS(Visual Analog Scale)を用いて調べた結果,音楽を聞いている時は痛みの認知程度が低下する事がわかった.そこで本研究では,音楽を聞くことにより疼痛閾値はどの程度変化するか,また侵害刺激に反応していた帯状回の神経活動は音楽を聞くことにより変化するかを検討した.【方法】被験者45名を対象に前腕内側と足首内側に電極を貼り知覚・痛覚定量分析装置(Pain VisionRPS–2100N:ニプロ株式会社)を用いて,無条件時と3 種類の音楽(ポップス・バラード・クラシック)を聞かせたときの知覚閾値(最小感知電流値)と疼痛閾値(痛み対応電流値)を測定し比較検討した.さらに,口腔内測定用の電極を舌・頬粘膜・上顎歯肉・下顎歯肉に置き,上記と同様に無条件時と3 種類の音楽を聞かせたときの疼痛閾値を測定し比較検討した.また,被験者8 名を対象にPain Visionから流れる電流80μAを侵害刺激として足首内側に与えた時の帯状回の神経活動を機能的磁気共鳴装置(fMRI)で調べ,無条件時と3 種類の音楽を流している時の活動状態を比較した【結果と考察】 前腕の知覚閾値では無条件と3 種類の音楽による4 条件下での有意差は認められなかったが,前腕の痛覚閾値,足首の知覚閾値,足首の痛覚閾値では4 条件下での有意差が認められた(Friedmantest:順にp< 0.001,p< 0.05,p< 0.01).また口腔内4 箇所においても4 条件下での有意差が認められた(Friedman test:p<0.01).各部位のそれぞれの2 条件をWilcoxon signed–rankstestを用いて比較した場合,前腕知覚閾値ではポップスとバラード,ポップスとクラシックの間に有意差が認められ,痛覚閾値ではクラシックと他3 条件の間に有意差が認められた( 2 条件間のうち後者が前者に比較して閾値が上昇).足首知覚閾値では無条件とポップス,無条件とクラシック,バラードとクラシックの間に有意差が認められ,痛覚閾値では無条件とバラード,無条件とクラシック,ポップスとバラード,ポップスとクラシックとの間に有意差が認められた.舌の疼痛閾値は無条件とバラード,無条件とクラシック,ポップスとクラシックの間に有意差が認められ,頬粘膜の疼痛閾値は無条件とバラード,無条件とクラシック,ポップスとバラード,ポップスとクラシックの間に有意差が認められ,上顎歯肉では無条件とバラード,無条件とクラシック,ポップスとバラードの間に有意差が認められ,下顎歯肉では,無条件とバラード,無条件とクラシック,ポップスとクラシックの間に有意差が認められた.fMRIの実験では,侵害刺激に反応を示した帯状回での神経活動がポップスを聞くことにより2 名,バラードを聞くことにより1 名,クラシックを聞くことにより2 名の被験者において減弱した.これらの結果より,バラードやクラシックのようなスローテンポの曲を聞くことは疼痛緩和に非常に有効であることが示唆された.これは音楽の気分や感情に与える心理的作用と痛覚伝導系への抑制作用によるものだと考えられた.
著者
大野 忠男 谷山 貴一 隅田 佐知 芝 規良 澁谷 徹
出版者
松本歯科大学学会
雑誌
松本歯学 (ISSN:03851613)
巻号頁・発行日
vol.39, no.1, pp.12-15, 2013-06-30

The allergic reactions to drugs are divided into two types ; type I (anaphylactic or fast type) and type IV (delayed type). The anaphylactic type is due to the specific IgE antibody and the reactions occur immediately after the administration of the causal drugs. On the other hand, the delayed type is due to the specific T cell and the reactions are more slowly. We experienced a case who suffered from delayed type allergic reaction twice after dental treatment. At the first time, the patient’s lower firstmolar was extracted under local anesthesia with 3% prilocaine with felypressin and he had acetaminophen for the postoperative pain. At second time, scaling was done under surface anesthesia with COPARON which contains 6% tetracaine hydrochloride. We performed the drug−induced lymphocyte stimulation test ; DLST and the challenge test. It was ascertained from the anamnesis and the results of allergic tests that the causal drugs for the allergic reactions were 3% prilocaine with felypressin and COPARON . 2%lidocaine for surface anesthesia, 2% lidocaine with adrenaline, acetaminophen and cefdinir were safely used.
著者
矢ヶ﨑 康 加藤 倉三 枝 重夫
出版者
松本歯科大学学会
雑誌
松本歯学 (ISSN:03851613)
巻号頁・発行日
vol.15, no.2, pp.217-231, 1989-08-31

In a previous paper 142 books and journals containing biographies of Dr. Hideyo Noguchi were reviewed (Matsumoto Shigaku, Vol. 13, pp. 1-34, 1987). An additional 34 books and journals, and some old picture post cards, were subsequently added to the collection of the biographies of Dr. Hideyo Noguchi in Matsumoto Dental College. These new materials, including following valuable books, are accordingly described in this paper. 1) Yamazaki, H., Medical History for Boys. Kyoikukenkyukai, Tokyo, 1933. 2) Ohki, K., Educational Phirosophy of Dr. H. Noguchi who is a world great man. Kyoikujissaisha, Tokyo, 1933. 3) Miyajima, M., The Eyes of Frog. Sohgaboh, Tokyo, 1936. 4) Umezawa, H. ed., Biographic Episodes of Modern Famous Doctors. Nihon Ijisinposha, Tokyo, 1937. 5) Koizumi, M., Hideyo Noguchi. Hiroshimatosho, Hiroshima, 1949
著者
矢ヶ﨑 康 加藤 倉三 枝 重夫
出版者
松本歯科大学学会
雑誌
松本歯学 (ISSN:03851613)
巻号頁・発行日
vol.20, no.1, pp.80-99, 1994-04-30

In the previous papers 176 books and journals regarding the biography of Dr. Hideyo Noguchi were reviewed (Matsumoto Shigaku, Vol.13, pp.1~34, 1987: Vol.15, pp.217~231, 1989). In addition to these, 58 books and journals, including the following 3 important books, were introduced in this paper. 1) Hokari, Y.: A Tasteful Biography of Great Men. Daikyosha, Tokyo, 1931 2) Masaki, F.: A Benefactor of the Humans, Hideyo Noguchi. Shinchosha, Tokyo, 1936 3) Kobayashi, S.: Memories of Hideyo Noguchi. Iwanami-Shoten, Tokyo, 1941
著者
山田 博仁 山本 昭夫 笠原 悦男
出版者
松本歯科大学学会
雑誌
松本歯学 (ISSN:03851613)
巻号頁・発行日
vol.30, no.2, pp.129-142, 2004-08-31

It is a universal hope to retain clean teeth and dentition as long as possible. The number of patients with chief complaints of tooth discoloration and staining, and inquiries about esthetics and whitening of the teeth, are increasing. Dental treatment is shifting from the previous age of tooth pain relief and removal to the age of emphasis on esthetic recovery of natural tooth color and morphology in addition to the recovery of functionality. Therefore, it is necessary for clinicians to try to meet these various requests by patients. Although bleaching, veneer restoration, and prosthetic treatment are used for tooth discoloration and staining, we reported the following items focusing on a bleaching method, and describe clinical cases in this paper: I. Causes of tooth discoloration and staining II. Indications and contraindications for bleaching III. Technical procedures for intra-oral examination IV. Bleaching of the vital teeth 1. Office bleaching method 2. Home bleaching method V. Bleaching of the pulpless tooth 1. Walking bleach technique 2. Bleaching of the pulpless tooth using Highlight^[○!R]
著者
音琴 淳一
出版者
松本歯科大学学会
雑誌
松本歯学 (ISSN:03851613)
巻号頁・発行日
vol.31, no.3, pp.230-240, 2005-12-31

Halitosis (Bad breath) is classified into physiological bad breath and oral or systemic diseased bad breath. When halitosis is caused by oral disease, odor originate in the oral cavity. When halitosis is caused by systemic disease, odor is part of into the expired air. Physiological halitosis and morbid halitosis are collectively called genuine halitosis. Physiological halitosis depends on lifestyle and age. Halitosis which occurs at the time of rising in the morning is the frequent type of physiological halitosis. Halitosis caused by oral disease has been thought to be caused by dental plaque. However, it has been shown recently that the tongue coating (fur) is the cause of halitosis. In the case of periodontal disease, it is important to remove the fur which is located at the root 1/3 of the tongue simultaneously throughout the periodontal treatment. Moreover, bad odors from the oral cavity are caused mainly by volatile sulfur compounds (VSC). Pseudo-halitosis and halitophobia are generally called self-halitosis. However, when it is a self-halitosis, the patient should receive not only dental treatment but also by medical treatment in psychosomatic internal medicine. Most patients with halitophobia were not treated ambitiously because most people with self-halitosis could not judge their condition and feeling by other people, including dentists. eighty percent or more of people will tend to develop self-halitosis. This is important self-halitosis is cased by too much strain in many cases. We must help relax not only the patient's mental state to also make relax not only mentality but also orbicular muscle of mouth. Diagnosis of halitosis is performed by dividing the contents of questions so that the cause of halitosis can be distinguished throuh a questionnaire at first. Next, odor is judged by organic functional inspection, and the amount of gas in the oral cavity or respiratory organ is measured by apparatus. Organic functional inspection is a formal method of judging a bad odor in Japan. It is necessary to be training always for judging the odor of patients and make the inspection capability not decline. Odor measurement by apparatus has the advantage of explanation to the patient. Various gases are also measurable. We need to know which portion of the bad smell substance is measured, and it is necessary to use it for the purpose collectively.
著者
平岡 行博
出版者
松本歯科大学学会
雑誌
松本歯学 (ISSN:03851613)
巻号頁・発行日
vol.32, no.2, pp.117-127, 2006-08-31

Porphyromonas gingivalis is a major etiological agent implicated in adult periodontitis. The survival of this organism in the periodontal pocket would require an ability to overcome oxidative stress induced by reactive oxygen species generated by neutrophils or exposure to free oxygen from blood. An antioxidant enzyme that may contribute to the survival strategy of this organism is superoxide dismutase (SOD). P. gingivalis has a characteristic SOD which is called "cambialistic SOD" from the Latin cambialis, suggesting change and denoting enzymes capable of making a cofactor substitution. We prepared a mutant P. gingivalis SOD that possessed a mutation of the amino acids near the active-metal by site-directed mutagenesis, and discussed the structural basis of the metal-specific activity. SODs distribute in three primary domain, Bacteria, Eucarya, and Archaea, then the survival strategy of P. gingivalis seems to be an evolutional strategy of early life in remote ages.
著者
大塚 尚美 松浦 健 岡藤 範正 栗原 三郎
出版者
松本歯科大学学会
雑誌
松本歯学 (ISSN:03851613)
巻号頁・発行日
vol.32, no.3, pp.212-219, 2006-12-31

We used a pendulum appliance for distal and palatal movement, and depression of the upper bilateral second molar to correct scissors bite and deep overbite. As a result, we were able to achieve a good arrangement of occulusion without root resorption. The in superposition of the Cephaologram trace on a three-dimensional shape measuring system using a dental cast at initial diagnosis was useful for planing orthodontic treatment with visual and numerical prediction of tooth movement.
著者
御郷 信也 五十嵐 順正
出版者
松本歯科大学学会
雑誌
松本歯学 (ISSN:03851613)
巻号頁・発行日
vol.24, no.1, pp.72-76, 1998-04-30

Dental health beliefs of middle-aged and older adults have been recently investigated. Although social factors that influence dental beliefs have been acknowledged for a long time, many studies have been mainly concerned with biological factors. The aim of this study was to investigate the influence of educational level on the dental health beliefs of removable denture patients. A total of 182 dentate patients aged 50 years and older with removable dentures who attended the Prosthodontic Clinic of Showa University Dental Hospital were interviewed before an oral examination. The patients were divided into two groups; those who used insurance-provided removable dentures and those who used non-insurance-provided removable dentures. Their dental knowledge and attitudes were investigated. Their educational level was also examined. We found no significant differences in educational level between the 2 groups. We found no significant difference in dental beliefs among wearers of non-insurance-provided dentures in regards to educational level.
著者
市川 博保
出版者
松本歯科大学学会
雑誌
松本歯学 (ISSN:03851613)
巻号頁・発行日
vol.19, no.3, pp.315-327, 1993-12-31

Albucasis is one of the representative scholar of Arabic Medicine in the Middle Ages. He wrote a book titled "Surgery", which it thought to be a quotation from the work of Paul of Aegina. Nevertheless, the book is very famous for its vast quantity of illustrations of surgical and dental instruments. In 1909 V. Guerini described the instruments in "Surgery" from the book which had been translated into Latin by Channing. I compared the work of Channing with the English Version by Spink and Lewis and discovered something new. "Surgery" is of composed three books. In the first book, treatment or cures involve cauterization. In the second book cure is referred to as incision, perforation, venesection and wounds. Finally the third book focuses on the cures for bone fractures and dislocations. Among the books there appeared 196 illustrations of surgical and dental instruments. Therefore, it is said that "Surgery" is the first book which adopted illustrations, of mentioned above. I found that some articles should have been added to the dental descriptions by Guerini. Moreover, I found that regarding the dental instruments, especially the sealer, different illustrations had been introduced by Guerini.
著者
千野 武広
出版者
松本歯科大学学会
雑誌
松本歯学 (ISSN:03851613)
巻号頁・発行日
vol.10, no.1, pp.1-16, 1984-06-30

The exposure of medical care staff to viral hepatitis is well known and the preventive measures against infection by viral hepatitis in the hospital have been presented as one of the important items on the agenda of the National Japan Conference of the Directors of Dental College Hospitals on several occasions. Current status at each Dental College Hospital was reported and discussed. In the present report, in addition to the results of surveys on infection by type B hepatitis virus at each Dental College Hospital, current status of the preventive measures against infection by viral hepatitis in each of these hospitals are reported. Survey data reported by Tohoku University School of Dentistry, Showa University School of Dentistry, Nippon Dental University, Josai Dental University, Kyushu Dental College, Kagoshima University Faculty of Dentistry and our College were used as referece. According to these surveys, it seems that dentists and predoctoral students in the Dental College belong to a high risk group for hepatitis B infection. This would indicate that the college or university, as an educational institution, should provide the students with sufficient training regarding the nature of HB hepatitis, as well as preventive procedures. The countermeasures for the infection by viral hepatitis in the hospital have been practiced in each Dental College and University Hospital according to the Medical Institution Guidelines for Type B Hepatitis. Those who engage in dental care should sufficiently recognize the danger of nontransvenous infection and practice necessary preventive measures to avoid infection.
著者
河野 のり子 野村 浩道
出版者
松本歯科大学学会
雑誌
松本歯学 (ISSN:03851613)
巻号頁・発行日
vol.5, no.1, pp.21-26, 1979-06-30

Biochemical and histochemical studies on the phosphatase activities of the mucous membrane of the frog tongue were carried out. The biochemical study strongly suggested that the mucous membrane of the tongue contains both ATPase and alkaline phosphatase activities. But, since the ATPase activity was dependent on the pH of the incubating solution and the maximal activity was obtained around pH 9.0, the ATPase activity may be partly due to the alkaline phosphatase activity. The histochemical study revealed that ATPase activity was localized on the superficial layer of the tongue. Great activity was exhibited in the sensory discs of the fungiform papillae and in the ciliated cell layer of the back of the tongue. Alkaline phosphatase activity could not be demonstrated histochemically in the present study.