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Effects of force application on periodontal blood circulation
Author(s) -
Gaengler Peter,
Merte Knut
Publication year - 1983
Publication title -
journal of periodontal research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.31
H-Index - 83
eISSN - 1600-0765
pISSN - 0022-3484
DOI - 10.1111/j.1600-0765.1983.tb00339.x
Subject(s) - periodontal fiber , microcirculation , blood circulation , medicine , dentistry , molar , maxillary central incisor , orthodontics , traditional medicine
The different structure and function of the systemic circulation and microcirculation in the gingiva and in the periodontal ligament in rat incisors has been demonstrated by vital microscopy. A previously developed, standardized vital microscopic technique was applied in order to assess the effects of horizontal force application to the tooth on blood circulation. In narcotized animals, the incisors were prepared for vital microscopic observation either of the periodontal ligament or gingiva, using tooth loading with forces ranging from 30 to 500 mN. The force was applied as short, intermittent forces at 5 to 30 s and as a continuous force for 10 to 180 min. The results revealed circulatory changes which were different in the periodontal and gingival vessels. Both compression and tension in the periodontal ligament led to ischemic areas beginning in the vessels and capillaries (30 mN) and ending with the arteries (100 mN). After continuous force application (60 min, 100 mN), the periodontal vessels showed irreversible thrombosis. Neither short, intermittent forces nor continuous force application had an effect on gingival blood circulation.