Analysis On Self-healing Effect Of Anterior Teeth Area Gingival Soft Tissue In Canine Model

Objective：The purpose of this study is to observe the self-healing effect of gingivalsoft tissue around the gingival under the condition of artificial simulation of theresidual roots in canine maxillary anterior teeth area.Methods：Residual roots model was conducted in the maxillary anterior teeth area ofthe canine (right maxillary lateral incisor and left maxillary central incisor) by grindingdental crown to approximate alveolar ridge top level in subgingival margin andavoiding wearing gingival tissue. The growth of gums were observed in the1,3,4,5weeks after surgery through measuring the distance between gingival papilla andadjacent regions spire, the vertical distance between gingival papilla and the level ofthe adjacent regions spire, the distance between the modpoint of gingival margin andadjacent tooth spire and the vertical distance between the modpoint of gingival marginand the level of the adjacent regions spire. All the statistical analyses for experimentaldata were performed by SPSS statistical software.Results：Hyperplasia of the gingival tissue in the fourth week after surgery was nearlyfull of residual root fracture, and no color and texture difference was found betweenthe gingival tissue in the fifth week after surgery and normal gingival. According to theresults of statistical analysis, the growth of gingival tissue is toward the direction ofhyperplasia during the observation period.Conclusions：Gingival have some certain ability of self-healing in the case of nodamage, and the residual root tissue can complete self-healing at4weeks.