CAJ | 학술논문

目的探讨用Photoshop进行模型测量的可靠性.方法牙列拥挤正畸病例上颌记存模10个,用数码相机分别拍摄其上下颌模型面的照片,用Photoshop法在数码相片上测量其前牙的可用间隙和必须间隙,用传统方法在石膏模型上测量其前牙的可用间隙和必须间隙,由5个测量者用同样的方法测量.比较不同测量者测量同一项目的测量结果,以及同一测量者用两种测量方法的测量结果.结果传统方法测量可用间隙时,5名测量者(M1～M5)的测量结果可重复性不高,M1的测量结果(44.87±2.55)mm分别与M3(42.15±2.20)mm和M5(41.86±3.12)mm的测量结果差异有统计学意义(P＜0.05);Photoshop法测量可用间隙时,可重复性较传统方法高,M5的测量结果(41.10±2.96)mm和其余4人的测量结果差异皆有统计学意义(P＜0.05);Photoshop法和传统方法测量必须间隙时,其可重复性皆比测量可用间隙时高,各组的测量结果差异无统计学意义(P＞0.05).结论测量必须间隙时,Photoshop法和传统方法差别不大,而测量可用间隙时,Photoshop法比传统方法有明显的优势.
목적 탐토용Photoshop진행모형측량적가고성.방법 아렬옹제정기병례상합기존모10개,용수마상궤분별박섭기상하합모형면적조편,용Photoshop법재수마상편상측량기전아적가용간극화필수간극,용전통방법재석고모형상측량기전아적가용간극화필수간극,유5개측량자용동양적방법측량.비교불동측량자측량동일항목적 측량결과,이급동일측량자용량충측량방법적측량결과.결과 전통방법측량가용간극시,5명측량자(M1～M5)적측량결과가중복성불고,M1적측량결과(44.87±2.55)mm분별여M3(42.15±2.20)mm화M5(41.86±3.12)mm적측량결과차이유통계학의의(P＜0.05);Photoshop법측량가용간극시,가중복성교전통방법고,M5적측량결과(41.10±2.96)mm화기여4인적측량결과차이개유통계학의의(P＜0.05);Photoshop법화전통방법측량필수간극시,기가중복성개비측량가용간극시고,각조적측량결과차이무통계학의의(P＞0.05).결론 측량필수간극시,Photoshop법화전통방법차별불대,이측량가용간극시,Photoshop법비전통방법유명현적우세.
Objective To investigate the reliability of cast measurements by comparing Photoshop and conventional hand-held method. Methods Maxillary standard plaster models from 10 orthodontic cases with crowding were enrolled in this study. The space available and the space required of anterior region were measured by using Photoshop in the digital pictures or conventional method used by 5 observers respectively.The measurement results of the same sample among every observer were analyzed with ANOVA, and the difference between the 2 methods was calculated and paired t test was used to analyze the data. Results The repeatability of measurement results was not good when the space available was measured with conven-tional method by different observer( M1 ～ M5 ), and the measurement results of M1 were significantly different from that of M3 and M5 respectively( P ＜ 0.05 ). The repeatability of measurement results was relatively good when the space available was measured by using Photoshop, and the measurement results of M5 were significantly different from other observers ( P ＜ 0.05 ). The measurement results of space required measured by different observer were very close, and the reproducibility was excellent when they were measured by means of Photoshop or conventional methods. Conclusion There were no much difference between Photoshop and conventional method to measure the required space. Photoshop had significant advantage over conventional method when available sRace was measured.