著者

内山 純一

出版者

特定非営利活動法人 日本歯周病学会

雑誌

日本歯周病学会会誌 (ISSN:03850110)

巻号頁・発行日

vol.23, no.2, pp.249-272, 1981-06-28 (Released:2010-07-16)

参考文献数

49

被引用文献数

4 5 14

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The effect of toothbrushing may be consist of plaque removal and gingival massage. However, analytical study of these two factors has not been demonstrated yet. The purpose of the present study was to analyze the effect of toothbrushing on experimental gingivitis, and to make clear the influence of plaque removal and/or gingival massage.Four monkeys (Macacca irus) were used, and to establish gingivitis they were fed soft diet during 8 months of preparatory period. An experimental period of 28 days, each monkey's mouth was separated in following four quadrants; 1) Toothbrushing (plaque removal plus gingival massage) 2) Plaque removal 3) Gingival massage 4) Control (no treatment). During 28 days, clinical examinations were repeated and biopsies were sampled on day 4, 7, 14 and 28. The biopsy material was subjected to histometric analysis.The results showed that:1) During experimental period, Gingival Index and pocket depth decreased gradually in all treated quadrants, except for control. However, the improvement of gingivitis was most remarkable in toothbrushing quadrant.2) Gingival shrinkage occurred in toothbrushing and gingival massage quadrant.3) The percentage-area of infiltrated connective tissue, and the number of inflammatoly cells within the connective tissue decreased gradually in all treated quadrants.However, these two parameters showed most marked decrease in toothbrushing quadrant.4) The number of leucocytes within the sulcular epithelium decreased rapidly in all treated quadrants.5) Collagen density increased gradually in all treated quadrants with decrease of inflammatory cells.The present experiment demonstrated that a gingival inflammation may be improved by gingival massage alone (without plaque removal). It seemed that the effect of toothbrushing on gingivitis results from both plaque removal and gingival stimulation (massage) with toothbrush.