To validate the use of the Index of Complexity, Outcome and Need (ICON) in assessing orthodontic treatment need among 12-13 year-olds in southern China, we determined the threshold value of ICON based on Chinese ort...To validate the use of the Index of Complexity, Outcome and Need (ICON) in assessing orthodontic treatment need among 12-13 year-olds in southern China, we determined the threshold value of ICON based on Chinese orthodontists' judgments. The samples consisted of 335 students in grade 7 from 16 randomly selected middle schools in Chengdu, China. Three associate professors provided ICON scores for each participant and the results were compared with the gold standard judgments from 25 experts on treatment needs. Based on the gold standard, 195 casts belonged to the treatment category, while the rest 140 belonged to the no-treatment category. With the international cutoff point of 43, the sensitivity and specificity of the iCON score were 0.29 and 0.98. The best compromise between sensitivity and specificity in Chengdu, compared with the gold standard, was found at a cutoff point of 29, and the sensitivity and specificity were 0.88 and 0.83. When used to evaluate the treatment need of 12-13 year-olds in southern China, the international ICON cutoff value did not correspond well with Chinese orthodontists' judgments; a lower cutoff value of 29 offered a ~reater sensitivitv and soecificitv with respect to exoert orthodontists' oerceotion of treatment need.展开更多
目的:应用正畸治疗难度、结果、需要指数(Index of orthodontic treatment Complexity,Outcome and Need,ICON)评价新疆医科大学口腔医学生的正畸治疗需要量及难度,为开展防治提供科学的依据。方法:采用整群抽样法,选取新疆医科大学2008...目的:应用正畸治疗难度、结果、需要指数(Index of orthodontic treatment Complexity,Outcome and Need,ICON)评价新疆医科大学口腔医学生的正畸治疗需要量及难度,为开展防治提供科学的依据。方法:采用整群抽样法,选取新疆医科大学2008-2012届大学四年级口腔医学生619例,男265例,女354例;汉族376例,维吾尔族202例,其他少数民族41例;年龄21~26岁,制取石膏模型,应用ICON确定正畸治疗需要量及难度。结果:研究结果以M(P25,P75)表示。男性ICON分值23(14.0,34.5),女性21(14.0,33.0),男女性别无差异(P>0.05)。汉族ICON分值21(14.0,33.0),维吾尔族23(14.0,33.0),其他少数民族26(19.5,34.0),各民族间ICON分值无显著性差异(P>0.05)。根据ICON分值分类,正畸治疗需要量方面:男性需要正畸治疗者为34例(12.8%),女性需要治疗者为29例(8.2%)。族别间:汉族需要正畸治疗者42例(11.2%),维吾尔族18例(8.9%),其他3例(7.3%)。正畸治疗难度方面:"容易"占66.6%,"较容易"占28.3%,"中等难度"占3.2%,"困难"占2.4%,"非常困难"占1%。结论:(1)新疆口腔医学生正畸需要量较少,难度较低,新疆地区牙病防治和宣传工作开展有效;(2)ICON是一种可信、可重复、内容全面的错牙合流行病学指数,有利于确定正畸需要量、难度、结果改善度,建议推广使用。展开更多
目的:采用正畸治疗难度、结果和需要指数(index of orthodontic treatment complexity ,outcome and need ,ICON )评价上海地区初中学生正畸治疗难度及客观治疗需要。方法:抽取上海中心城区12~15岁初中生365名作为研究对象。采用...目的:采用正畸治疗难度、结果和需要指数(index of orthodontic treatment complexity ,outcome and need ,ICON )评价上海地区初中学生正畸治疗难度及客观治疗需要。方法:抽取上海中心城区12~15岁初中生365名作为研究对象。采用ICON评价研究对象正中咬合时正面相及牙颌模型,分析正畸治疗难度与正畸治疗需要。结果:正畸治疗需要方面,不需要正畸治疗占62.19%、需要正畸治疗占37.81%。正畸治疗难度方面,根据ICON的评分结果,在365例被调查者中,正畸治疗难度为“容易”占43.56%、“较容易”占31.51%、“中等难度”占12.88%、“困难”占5.75%、“非常困难”占6.30%。男女性正畸治疗难度、正畸治疗需要差异均无统计学意义。结论:在被调查初中生中,需要接受正畸治疗者较多,多数正畸治疗难度不大,治疗困难与非常困难者较少。展开更多
目的验证正畸治疗难度、结果、需要指数(Index of treatment complexity,outcome and need,ICON)在新疆地区的可靠性及有效性,为新疆地区正畸治疗提供帮助。方法选取新疆石河子地区在校学生254名制取模型,由专业人员按照ICON标准对模型...目的验证正畸治疗难度、结果、需要指数(Index of treatment complexity,outcome and need,ICON)在新疆地区的可靠性及有效性,为新疆地区正畸治疗提供帮助。方法选取新疆石河子地区在校学生254名制取模型,由专业人员按照ICON标准对模型进行正畸治疗需要评分,所得结果与该地区6名正畸专家构成的专家组决定进行比较。结果不论是ICON测量者、专家组,还是ICON与专家组"金标准",Kappa值均大于0.80具有较高一致性,表明ICON可以反映新疆地区正畸医师决策。通过ROC曲线评价ICON,其标准截止点与优化截止点的灵敏度、特异度、准确度分别为(93.6%、79.5%、86.8%)和(89.4%、90.9%、90.1%),表明ICON具有良好的诊断效能,但ICON应用于新疆时应考虑地区治疗需要量较低而优化截止点,提高准确度。结论在新疆地区应用ICON指数能够正确的反映正畸医生的决策,且具有较高的诊断效能,但要注意其最佳治疗需要截止点受地域影响。应用ICON确定正畸治疗需要使诊断过程简化将是正畸学未来的发展方向。展开更多
文摘To validate the use of the Index of Complexity, Outcome and Need (ICON) in assessing orthodontic treatment need among 12-13 year-olds in southern China, we determined the threshold value of ICON based on Chinese orthodontists' judgments. The samples consisted of 335 students in grade 7 from 16 randomly selected middle schools in Chengdu, China. Three associate professors provided ICON scores for each participant and the results were compared with the gold standard judgments from 25 experts on treatment needs. Based on the gold standard, 195 casts belonged to the treatment category, while the rest 140 belonged to the no-treatment category. With the international cutoff point of 43, the sensitivity and specificity of the iCON score were 0.29 and 0.98. The best compromise between sensitivity and specificity in Chengdu, compared with the gold standard, was found at a cutoff point of 29, and the sensitivity and specificity were 0.88 and 0.83. When used to evaluate the treatment need of 12-13 year-olds in southern China, the international ICON cutoff value did not correspond well with Chinese orthodontists' judgments; a lower cutoff value of 29 offered a ~reater sensitivitv and soecificitv with respect to exoert orthodontists' oerceotion of treatment need.
文摘目的:应用正畸治疗难度、结果、需要指数(Index of orthodontic treatment Complexity,Outcome and Need,ICON)评价新疆医科大学口腔医学生的正畸治疗需要量及难度,为开展防治提供科学的依据。方法:采用整群抽样法,选取新疆医科大学2008-2012届大学四年级口腔医学生619例,男265例,女354例;汉族376例,维吾尔族202例,其他少数民族41例;年龄21~26岁,制取石膏模型,应用ICON确定正畸治疗需要量及难度。结果:研究结果以M(P25,P75)表示。男性ICON分值23(14.0,34.5),女性21(14.0,33.0),男女性别无差异(P>0.05)。汉族ICON分值21(14.0,33.0),维吾尔族23(14.0,33.0),其他少数民族26(19.5,34.0),各民族间ICON分值无显著性差异(P>0.05)。根据ICON分值分类,正畸治疗需要量方面:男性需要正畸治疗者为34例(12.8%),女性需要治疗者为29例(8.2%)。族别间:汉族需要正畸治疗者42例(11.2%),维吾尔族18例(8.9%),其他3例(7.3%)。正畸治疗难度方面:"容易"占66.6%,"较容易"占28.3%,"中等难度"占3.2%,"困难"占2.4%,"非常困难"占1%。结论:(1)新疆口腔医学生正畸需要量较少,难度较低,新疆地区牙病防治和宣传工作开展有效;(2)ICON是一种可信、可重复、内容全面的错牙合流行病学指数,有利于确定正畸需要量、难度、结果改善度,建议推广使用。
文摘目的:采用正畸治疗难度、结果和需要指数(index of orthodontic treatment complexity ,outcome and need ,ICON )评价上海地区初中学生正畸治疗难度及客观治疗需要。方法:抽取上海中心城区12~15岁初中生365名作为研究对象。采用ICON评价研究对象正中咬合时正面相及牙颌模型,分析正畸治疗难度与正畸治疗需要。结果:正畸治疗需要方面,不需要正畸治疗占62.19%、需要正畸治疗占37.81%。正畸治疗难度方面,根据ICON的评分结果,在365例被调查者中,正畸治疗难度为“容易”占43.56%、“较容易”占31.51%、“中等难度”占12.88%、“困难”占5.75%、“非常困难”占6.30%。男女性正畸治疗难度、正畸治疗需要差异均无统计学意义。结论:在被调查初中生中,需要接受正畸治疗者较多,多数正畸治疗难度不大,治疗困难与非常困难者较少。
文摘目的验证正畸治疗难度、结果、需要指数(Index of treatment complexity,outcome and need,ICON)在新疆地区的可靠性及有效性,为新疆地区正畸治疗提供帮助。方法选取新疆石河子地区在校学生254名制取模型,由专业人员按照ICON标准对模型进行正畸治疗需要评分,所得结果与该地区6名正畸专家构成的专家组决定进行比较。结果不论是ICON测量者、专家组,还是ICON与专家组"金标准",Kappa值均大于0.80具有较高一致性,表明ICON可以反映新疆地区正畸医师决策。通过ROC曲线评价ICON,其标准截止点与优化截止点的灵敏度、特异度、准确度分别为(93.6%、79.5%、86.8%)和(89.4%、90.9%、90.1%),表明ICON具有良好的诊断效能,但ICON应用于新疆时应考虑地区治疗需要量较低而优化截止点,提高准确度。结论在新疆地区应用ICON指数能够正确的反映正畸医生的决策,且具有较高的诊断效能,但要注意其最佳治疗需要截止点受地域影响。应用ICON确定正畸治疗需要使诊断过程简化将是正畸学未来的发展方向。