Periodontal healing following orthodontic movement of rat molars with intact versus damaged periodontia towards a bony defect.

摘要: The aim of this research was to determine whether orthodontic tooth movement influences periodontal healing. In 16 male Wistar rats, 12 week age, a bony defect created mesial both maxillary first molars, not including the attachment apparatus (group 1), and in 15 animals, included ligament 2). groups, right molar moved mesially (orthodontic side) for 2 weeks followed by 1-week retention period; contralateral (control side). Histomorphometric analysis performed. results within between different treatment groups sides were statistically compared t-test variance with repeated measures on logarithmic transformation. Junctional epithelium significantly larger at control than side (P = 0.024), group 1 < 0.001). A 0.034) pocket depth found 1. Supracrestal connective tissue 0.004). Root resorption infrequently only (five out 31 cases). principal findings suggest favourable effects restraining epithelial apical down-growth decreasing depth. Orthodontic could completely avoid formation long attachment. Therefore, regenerative surgery might be indicated prior movement. movement, shortly after surgery, had no detrimental effect soft healing or diminished but non-inflamed tissues.