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目的探讨医学图像处理软件Image J在评估正畸固定矫治后牙釉质脱矿白斑的发生率、平均覆盖率及严重程度中的作用。方法收集208例患者完成固定正畸矫治后的临床数码照片和口内检查患者的牙龈指数,应用医学图像处理软件Image J评估8颗上颌前牙颊面的牙釉质脱矿白斑发生率和平均覆盖率,分析比较好发白斑的牙位与白斑的面积及不同性别患者白斑发生率和白斑平均覆盖率的差异,综合评价白斑发生率和白斑平均覆盖率与患者牙龈指数的关系。结果在8颗上颌前牙颊面至少有1个白斑的发生率为31.3%,白斑的平均覆盖率为8.4%,白斑发生率由高到低的顺序为:侧切牙34.8%,尖牙28.8%,第一前磨牙26.9%,中切牙20.7%。不同性别患者的白斑发生率无统计学差异(P>0.05),牙龈指数越高的患者白斑发生率越高,牙釉质脱矿白斑的平均覆盖率级别越高。结论使用Image J图像处理软件可以评价正畸固定矫治后上颌前牙牙釉质脱矿白斑的发生率和严重程度。
Objective To explore the role of Image J, a medical image processing software, in assessing the incidence, average coverage and severity of demineralized white enamel lesions after orthodontic fixation. Methods The clinical digital photographs and oral gingival index of 208 patients who underwent orthodontic treatment were collected. Image J imaging software was used to evaluate the incidence and average coverage of enamel demineralization in 8 maxillary anterior teeth The differences between white spot area and leukoplakia area and the average white spot area coverage were analyzed and compared. The incidence of white spot and the average white spot coverage were compared with those of patients with gingival index. Results The incidence of at least one leukoplakia in the buccal surface of the 8 maxillary anterior teeth was 31.3%, the average coverage of leukoplakia was 8.4%. The order of the incidence of leukoplakia was 34.8% for lateral incisors, 28.8% for canines, , The first premolar 26.9%, 20.7% of the incisors. There was no significant difference in the incidence of leukoplakia between different genders (P> 0.05). The higher the incidence of leukoplakia in patients with higher gingival index, the higher the average coverage rate of enamel demineralization leukoplakia. Conclusion Image J image processing software can be used to evaluate the incidence and severity of enamel demineralization in maxillary anterior teeth after orthodontic fixation.