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Clinical Investigation of Hydroxyapatite-Coated Dental Implants (SUMICIKON®) The results and implications can be summarized as follows
Get PDFapplication/pdfHAP implants bond directly with bone, the load and distribution of occlusal force differs from that of natural teeth, which have physiological motility. More specifically, we considered the occlusal force is a key measure of the restoration of chewing ability. We performed a clinical investigation of the restoration of chewing ability and changes over time in peripheral gingiva in patients that had received HAP-coated dental implants (SUMICIKON®)The results and implications can be summarized as follows:journal articl
有床義歯患者の教育水準と歯科に対する行動・態度との関係について
Get PDFapplication/pdfDental 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.journal articl
歯の移動にともなう歯周組織の改造現象
Get PDFapplication/pdfChanges of periodontal tissues incident to experimental tooth movement in vivo and mechanical stress on bone tissue in vitro as well were explained and discussed in this article from the point of view of orthodontic treatment. These following items were introduced, based on results of basic and clinical researches. 1) Histological structures of periodontal tissues and reaction of the tissues incident to experimental tooth movement in vivo 2) Tissue and cellular reaction related to mechanical stimulus in vitro 3) Recent topics of osteoclastogenesis inhibitory factor (OCIF) and osteoclast differentiation factor (ODF) related to molecular biology 4) Prostaglandins as a mediator for bone resorption during orthodontic tooth movement 5) Recent topics of orthodontic application for bone morphogenetic protein (BMP) 6) Application of results from the basic research of tooth movement on orthodontic treatment, such as optimum force, effective tooth movement and pharmacological anchoragejournal articl
大臼歯の根管の解剖
Get PDFapplication/pdfThe molars of Japanese patients were injected with India ink, decalcified, and cleared in order to determine the number of root canals, marrow canals and apical ramifications. The following results were obtained. 1) The largest number of root canals is seen in the maxillary first molar, followed by the maxillary second molar, mandibular first molar and mandibular second molar in this order. The large number of marrow canals and apical ramification in the mandibular second molar, followed by the maxillary first molar, complicates determination of the number of root canals in these teeth. 2) The number of root canal in the mandibular first molar is larger in the Japanese than in the Swiss. This may indicate the difference among different races. 3) The number of root canals in the maxillary first molar is larger in Japanese than in Swiss populations. 4) The mandibular second molar shows the most complex C-shaped root canal, which increases difficulty of treatment.journal articl
中国人小児の乳歯列形態の検討 : 石家荘市と上海市の小児
Get PDFapplication/pdf中国人小児の乳歯歯冠幅径,歯列弓幅径および咬合状態を把握することを目的に石家荘市と上海市の小児の3・4歳児(低年齢児群)と5・6歳児(高年齢児群)の正常乳歯列模型98例を資料とし,歯列形態について計測観察を行い,両市を検討した結果,以下の結論を得た.1.歯冠近遠心幅径は石家荘市小児と上海市小児との間に差は認められなかった.2.歯列弓の大きさは，低年齢児群・男児と高年齢児群・女児では両市の小児問に差は認められなかった.3.歯間空隙の状態は石家荘市および上海市小児ともに霊長空隙と発育空隙が共存するものが最も高い頻度で認められた.4.ターミナルプレーンは上海市小児では垂直型の発現が最も高い頻度を示したものの,石家荘市小児では近心型が最も高く,次いで垂直型であった.また,乳犬歯咬合状態は石家荘市および上海市小児ともにI型が最も高い頻度で認められた.journal articl
