歯周炎が歯の移動に及ぼす影響についての実験的研究
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This study investigated tooth position influenced by periodontitis. Litter of four mongrel dogs served as subjects. A metal cap was set on both sides of the lower 3 rd premolar, and a bridgetype splint used for measuring the amount of tooth migration was splinted on both sides of the lower canine and 1st molars. At the experimental side three-walled osseous defect was prepared for the distal site of the 3rd premolar in use of fissuer bar. Every week, dental floss was stuffed into the osseous defect. Experimental localized periodontitis was induced (an inflammation area). The periodontal tissue on the contralateral side and the experimental side of the mesial side (a non-inflammation area) was kept healthy. The amount of tooth migration was measured once a week by using silicone rubber impression paste and determining the distance between the standard point of the metal cap and the standard point of the apparatus on the study cast models was determined. Then clinical parameters were examined. The experimental period was planned at 8 weeks. In order to avoid the effect of the cheek and tongue pressures, a removable cheek-and-tongue guard was set on the both sides of the lower 3rd premolar, except during examining time. The results obtained were as follows : 1) The experimental side (experimental localized periodontitis) showed that the tooth migration was more as compared with the control side (healthy gingiva). 2) The experimental side showed migration from the inflamed area to the non-inflamed area toward. 3) The amount of tooth migration was correlated with the tooth mobility.
- 九州歯科学会の論文
- 1996-02-25
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- 歯周炎が歯の移動に及ぼす影響についての実験的研究 : 主論文の要旨
- 歯周炎が歯の移動に及ぼす影響についての実験的研究