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  • 正畸治疗中开牙合牙和低位牙2种咬合功能低下牙的牙龈萎缩发生情况及相关影响因素

正畸治疗中开牙合牙和低位牙2种咬合功能低下牙的牙龈萎缩发生情况及相关影响因素

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  [Abstract] Objective To investigate the occurrence and related factors of gingival atrophy in two types of occlusal inferior teeth in orthodontic treatment. Methods From March 2016 to March 2018, 110 patients who received orthodontic treatment in this hospital were convenient selected and further divided into 55 cases open teeth (the treatment site was open teeth) and 55 cases, the lower teeth group (lower teeth in the treatment site) and 55 cases normal teeth were selected as the control group according to the treatment site. The occurrence of gingival recession after treatment of open teeth, lower teeth and control group was analyzed. The related factors of gingival atrophy were analyzed. Results The incidence of gingival recession after open teeth, lower teeth and control group were (0.86±0.24)mm, (1.36±0.52)mm and (0.24±0.08)mm, respectively. The difference was statistically significant (F=5.387, P<0.05). The open teeth, low teeth, missing teeth, tooth trauma, tooth extraction, gingival biotype and orthodontic gingival index were used as factors, and the assignment was(0=yes, 1=no). Logistic regression analysis was performed to show dental teeth, low teeth, tooth extraction, gingival biotype and orthodontic gingival index are risk factors for gingival recession. Conclusion After orthodontic treatment, there are two kinds of occlusal inferior teeth in both open and lower teeth. The incidence of open teeth is significantly higher than that of lower teeth. The reason is the combination of open teeth, lower teeth, tooth extraction, gingival biotype and orthodontic gingival index are related.
  [Key words] Orthodontic treatment; Open teeth; Lower teeth; Gingival atrophy
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  (收稿日期:2019-06-06)
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