Clinical Study on Gingival Invagination after Tooth Extraction and Orthodontic Treatment.

doi:10.13701/j.cnki.kqyxyj.2016.03.017

Abstract

Abstract: Objective: To investigate the factors of gingival invagination and provide the basis for clinical prevention and treatment. Methods: 87 cases were chosen from edgewise fixed appliance cases who had premolars removed. Among them, 65 cases who had gingival invagination on one side (experimental group) and no gingival invagination (control group) on the other side were selected. CBCT measurement was used to compare the alveolar bone width, height, the changes of bone mineral density, and the correlation of gingival invagination on both sides. The correlation of alveolar bone atrophy to the gingival invagination was also studied. Results: Gingival invagination was severe in the mandible than in the maxilla. The periodontal depth was deeper in the mandibular teeth than in the maxillary teeth. The height, width and density of alveolar bone in the experimental group decreased greater than in the control group (P<0.05). Conclusion: Gingival invagination was correlated to the change of alveolar bone width, height and bone mineral density. The alveolar bone resorption during the space closing and the loss of soft tissue support may be the anatomical factors associated with gingival invagination.

Key words: Gingival invagination , Orthodontics, Tooth extraction , Space closure , Alveolar bone

CLC Number:

R783.5

XU Geng-chi,ZHANG Xiao-bo, MOU Lan,HAN Yao-hui,GE Zhen-lin. Clinical Study on Gingival Invagination after Tooth Extraction and Orthodontic Treatment.[J]. Journal of Oral Science Research, 2016, 32(3): 282-284.

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