数码摄影技术与视觉比色法在前牙全瓷冠修复中的效果评价

Evaluation of digital photography technology and visual color matching in all-ceramic crown restoration of incisor

摘要:

目的：评价数码摄影技术与视觉比色法在前牙全瓷冠修复中的效果。方法：排除邻牙外形、色泽、位置异常等干扰因素后筛选30名上中切牙缺损或因颜色异常需行冠修复的患者，随机分为A、B ２组，比色后，A组使用VITA 3D-MASTER比色板比色法选择的颜色制作瓷牙，B组利用在尽量相同的时间及环境下拍摄的数码影像照片制作瓷牙，记录。结果：2种比色方法在切端比色结果具有统计学差异（P=0.034），使用数码摄影技术组患者在瓷牙形态、协调性方面患者满意度较视觉比色法高，差异有统计学意义（P=0.041）。结论：单纯使用数码摄影技术在患牙颜色选择上较视觉比色法无明显优势，但可以较好地辅助患牙制作，受一定外因干扰，需结合其他比色方法，临床及科研中应对数码摄影技术的操作环境进行必要的规范，以便获得更加精准的比色结果。

Abstract:

Objective：To study the differences of the color matching accuracy between the visual color matching and digital photogra－phy color matching. Methods：Thirty patients whose maxillary middle incisors needed to be restored were enrolled and randomized into A and B groups excluding the interfering factors of appearance，color and position. After color matching，patients in group A used VI－TA 3D-MASTER to choose color while those in group B took photograph by digital camera under the same time and environment，then fabricated all-ceramic crown. Results：There were statistical differences between the two methods in incisor color（P=0.034） and the digital photography color matching got higher satisfaction degree concerning the shape and harmony（P=0.041）. Conclusions：Only using digital photography technology could help the full crown making and it maybe interfered by some factors. Therefore，other methods should be combined in order to get an excellent color matching and necessary standards about the operating environment of digi－tal photography should be set.