目的评估轻中度拥挤下采用iTero Element 1口内扫描仪获得的数字化模型和传统石膏模型测量数据的准确性。方法选取到昆明医科大学附属口腔医院前兴路门诊部就诊的37名患者,使用iTero Element 1口内扫描仪扫描获得数字化模型和藻酸盐取...目的评估轻中度拥挤下采用iTero Element 1口内扫描仪获得的数字化模型和传统石膏模型测量数据的准确性。方法选取到昆明医科大学附属口腔医院前兴路门诊部就诊的37名患者,使用iTero Element 1口内扫描仪扫描获得数字化模型和藻酸盐取模获得同一患者传统石膏模型,比较数字化模型自动测量和传统石膏模型人工测量牙冠宽度、牙弓宽度、覆盖的差异。结果数字化模型和石膏模型的3次重复测量一致性检验ICC值均在0.9以上,均具有良好的可重复性。轻度拥挤组11、16、21、31、36、41、43、46牙冠宽度、14~24牙弓宽度、22覆盖,中度拥挤组11、23、16、31牙冠宽度、14~24牙弓宽度、11、12覆盖差异有统计学意义(P<0.05)。结论iTero数字化模型在轻中度拥挤时部分数据与手工测量石膏模型存在一定差异,可能是由于牙齿排列不齐,导致测量误差,但测量数据差异较小,不影响iTero数字化模型在临床中的应用。展开更多
Lead-free inorganic copper-silver-bismuth-halide materials have attracted more and more attention due to their environmental friendliness,high element abundance,and low cost.Here,we developed a strategy of one-step ga...Lead-free inorganic copper-silver-bismuth-halide materials have attracted more and more attention due to their environmental friendliness,high element abundance,and low cost.Here,we developed a strategy of one-step gas-solid-phase diffusioninduced reaction to fabricate a series of bandgap-tunable Cu_(a)Agm_(1)Bim_(2)I_(n)/CuI bilayer films due to the atomic diffusion effect for the first time.By designing and regulating the sputtered Cu/Ag/Bi metal film thickness,the bandgap of Cu_(a)Agm_(1)Bim_(2)I_(n)/CuI could be reduced from 2.06 to 1.78 eV.Solar cells with the structure of FTO/TiO_(2)/Cu_(a)Agm_(1)Bim_(2)I_(n)/CuI/carbon were constructed,yielding a champion power conversion efficiency of 2.76%,which is the highest reported for this class of materials owing to the bandgap reduction and the peculiar bilayer structure.The current work provides a practical path for developing the next generation of efficient,stable,and environmentally friendly photovoltaic materials.展开更多
文摘目的评估轻中度拥挤下采用iTero Element 1口内扫描仪获得的数字化模型和传统石膏模型测量数据的准确性。方法选取到昆明医科大学附属口腔医院前兴路门诊部就诊的37名患者,使用iTero Element 1口内扫描仪扫描获得数字化模型和藻酸盐取模获得同一患者传统石膏模型,比较数字化模型自动测量和传统石膏模型人工测量牙冠宽度、牙弓宽度、覆盖的差异。结果数字化模型和石膏模型的3次重复测量一致性检验ICC值均在0.9以上,均具有良好的可重复性。轻度拥挤组11、16、21、31、36、41、43、46牙冠宽度、14~24牙弓宽度、22覆盖,中度拥挤组11、23、16、31牙冠宽度、14~24牙弓宽度、11、12覆盖差异有统计学意义(P<0.05)。结论iTero数字化模型在轻中度拥挤时部分数据与手工测量石膏模型存在一定差异,可能是由于牙齿排列不齐,导致测量误差,但测量数据差异较小,不影响iTero数字化模型在临床中的应用。
基金supported by National Natural Science Foundation of China(Grant No.52072327,62074052,61874159)Zhongyuan Thousand Talents(Zhongyuan Scholars)Program of Henan Province(202101510004)+6 种基金Higher Education and Teaching Reformation Project(2014SJGLX064)Academic Degrees&Graduate Education Reform Project of Henan Province(2021SJGLX060Y)Key research and development projects of Universities in Henan Province(20A140026)the Scientific Research Innovation Team of Xuchang University(2022CXTD008)Science and Technology Project of Henan Province(222102230009).L.Ding thanks the National Key Research and Development Program of China(2022YFB3803300)the open research fund of Songshan Lake Materials Laboratory(2021SLABFK02)the National Natural Science Foundation of China(21961160720).
文摘Lead-free inorganic copper-silver-bismuth-halide materials have attracted more and more attention due to their environmental friendliness,high element abundance,and low cost.Here,we developed a strategy of one-step gas-solid-phase diffusioninduced reaction to fabricate a series of bandgap-tunable Cu_(a)Agm_(1)Bim_(2)I_(n)/CuI bilayer films due to the atomic diffusion effect for the first time.By designing and regulating the sputtered Cu/Ag/Bi metal film thickness,the bandgap of Cu_(a)Agm_(1)Bim_(2)I_(n)/CuI could be reduced from 2.06 to 1.78 eV.Solar cells with the structure of FTO/TiO_(2)/Cu_(a)Agm_(1)Bim_(2)I_(n)/CuI/carbon were constructed,yielding a champion power conversion efficiency of 2.76%,which is the highest reported for this class of materials owing to the bandgap reduction and the peculiar bilayer structure.The current work provides a practical path for developing the next generation of efficient,stable,and environmentally friendly photovoltaic materials.
