PDF(Pubmed)
Abstract：
OBJECTIVE: this study aims to compare the clinical outcomes of traditional and digital crown extension guides in the aesthetic restoration of anterior teeth. Additionally, the study will analyze the differences in the results of various digital crown extension guides in anterior aesthetic restorations.
METHODS: Sixty-two patients who required aesthetic restoration of their anterior teeth were selected for this study. The patients had a total of 230 anterior teeth and were randomly divided into three groups: a control group of 22 cases who received diagnostic wax-up with pressure film, an experimental group 1 of 20 cases who received 3D printed digital models with pressure film, and an experimental group 2 of 20 patients who received digital dual-positioning guides. The control group had a total of 84 anterior teeth, experimental group 1 had 72 anterior teeth, and experimental group 2 had 74 anterior teeth. The study compared three methods for fabricating crown extension guides: the control group used the diagnostic wax-up plus compression film method, while experimental group 1 used compression film on 3D printed models and experimental group 2 used 3D printed digital dual-positioning crown extension guides. After the crown lengthening surgery, the control group patients wore DMG resin temporary crown material for gingival contouring, while the experimental group patients wore 3D printed resin temporary crowns for the same purpose. The patients were followed up in the outpatient clinic after wearing temporary crowns for 1 month, 3 months, and 6 months, respectively. The clinical results were evaluated in terms of marginal fit, red aesthetic index, and white aesthetic index.
RESULTS: Based on the statistical analysis, the experimental group required significantly fewer follow-up visits and less time for guide design and fabrication compared to the control group. Additionally, the surgical time for the experimental group was significantly shorter than that of the control group. During the postoperative period between the 1st and 3rd month, the PES index scores for the marginal gingival level, proximal, and distal mesiodistal gingival papillae of the experimental group showed a trend of superiority over those of the control group. By the 6th month, the marginal gingival level exhibited a significant difference between the experimental and control groups. The experimental group demonstrated superior results to the control group in terms of shape, contour, and volume of the teeth, color, surface texture, and transparency of the restorations, and features during the 1st and 3rd postoperative months. In the 6th month, the comparative results indicated that the experimental group continued to exhibit superior outcomes to the control group in terms of the shape, color, surface texture, and transparency of the restorations, as well as the characteristics of the teeth. Additionally, the experimental group demonstrated significantly fewer gingival alterations than the control group at 1 month, 3 months, and 6 months post-procedure, with this difference being statistically significant. Furthermore, the combination of 3D printing technology and restorative techniques was utilized, resulting in consistent patient satisfaction.
CONCLUSIONS: Digitalisation plays an important role in anterior aesthetic restorations. The use of digital technology to manage the entire process of anterior cosmetic restorations can improve restorative results, reduce the number of follow-up appointments, shorten consultation time, and achieve better patient satisfaction.
METHODS: Sixty-two patients who required aesthetic restoration of their anterior teeth were selected for this study. The patients had a total of 230 anterior teeth and were randomly divided into three groups: a control group of 22 cases who received diagnostic wax-up with pressure film, an experimental group 1 of 20 cases who received 3D printed digital models with pressure film, and an experimental group 2 of 20 patients who received digital dual-positioning guides. The control group had a total of 84 anterior teeth, experimental group 1 had 72 anterior teeth, and experimental group 2 had 74 anterior teeth. The study compared three methods for fabricating crown extension guides: the control group used the diagnostic wax-up plus compression film method, while experimental group 1 used compression film on 3D printed models and experimental group 2 used 3D printed digital dual-positioning crown extension guides. After the crown lengthening surgery, the control group patients wore DMG resin temporary crown material for gingival contouring, while the experimental group patients wore 3D printed resin temporary crowns for the same purpose. The patients were followed up in the outpatient clinic after wearing temporary crowns for 1 month, 3 months, and 6 months, respectively. The clinical results were evaluated in terms of marginal fit, red aesthetic index, and white aesthetic index.
RESULTS: Based on the statistical analysis, the experimental group required significantly fewer follow-up visits and less time for guide design and fabrication compared to the control group. Additionally, the surgical time for the experimental group was significantly shorter than that of the control group. During the postoperative period between the 1st and 3rd month, the PES index scores for the marginal gingival level, proximal, and distal mesiodistal gingival papillae of the experimental group showed a trend of superiority over those of the control group. By the 6th month, the marginal gingival level exhibited a significant difference between the experimental and control groups. The experimental group demonstrated superior results to the control group in terms of shape, contour, and volume of the teeth, color, surface texture, and transparency of the restorations, and features during the 1st and 3rd postoperative months. In the 6th month, the comparative results indicated that the experimental group continued to exhibit superior outcomes to the control group in terms of the shape, color, surface texture, and transparency of the restorations, as well as the characteristics of the teeth. Additionally, the experimental group demonstrated significantly fewer gingival alterations than the control group at 1 month, 3 months, and 6 months post-procedure, with this difference being statistically significant. Furthermore, the combination of 3D printing technology and restorative techniques was utilized, resulting in consistent patient satisfaction.
CONCLUSIONS: Digitalisation plays an important role in anterior aesthetic restorations. The use of digital technology to manage the entire process of anterior cosmetic restorations can improve restorative results, reduce the number of follow-up appointments, shorten consultation time, and achieve better patient satisfaction.
摘要：
目的：本研究旨在比较传统和数字牙冠延伸指南在前牙美学修复中的临床效果。此外,这项研究将分析各种数字牙冠延伸指南在前牙美学修复中的结果差异。
方法：选择需要对前牙进行美学修复的62例患者进行本研究。患者共230颗前牙，随机分为三组：对照组22例，接受压力膜诊断蜡，实验组1为20例接受3D打印数字模型和压力膜的患者，和接受数字双定位指南的20名患者中的实验组2。对照组共84颗前牙,实验组1有72颗前牙，实验组2有74颗前牙。该研究比较了三种制造牙冠延伸导向器的方法：对照组使用诊断蜡加压缩膜方法，而实验组1在3D打印模型上使用压缩膜，实验组2使用3D打印数字双定位牙冠延伸指南。在牙冠延长手术后,对照组患者使用DMG树脂临时冠材料进行牙龈轮廓整理，而实验组患者佩戴3D打印树脂临时冠的目的相同。患者佩戴临时冠1个月后在门诊随访,3个月,6个月,分别。临床结果根据边缘拟合进行评估，红色审美指数，和白色审美指数。
结果：根据统计分析，与对照组相比,实验组需要的随访次数显著减少,指南设计和制作时间显著减少.此外,实验组手术时间明显短于对照组。在术后第1个月和第3个月之间，边缘牙龈水平的PES指数得分，近端,实验组远端中远端的牙龈乳头显示出优于对照组的趋势。到了第六个月,边缘牙龈水平在实验组和对照组之间表现出显著差异。实验组在形状方面表现出优于对照组的结果，轮廓,和牙齿的体积，颜色,表面纹理,以及修复的透明度，以及术后第1个月和第3个月的特征。第六个月,比较结果表明，实验组在形状方面继续表现出优于对照组的结果，颜色,表面纹理,以及修复的透明度，以及牙齿的特征。此外,实验组在1个月时表现出明显少于对照组的牙龈改变，3个月,术后6个月，这种差异具有统计学意义。此外，利用了3D打印技术和修复技术的结合，产生一致的患者满意度。
结论：数字化在前牙美学修复中起着重要作用。运用数字化技术对前牙美容修复的全过程进行管理,可以提高修复效果,减少后续任命的数量，缩短咨询时间，达到更好的患者满意度。
方法：选择需要对前牙进行美学修复的62例患者进行本研究。患者共230颗前牙，随机分为三组：对照组22例，接受压力膜诊断蜡，实验组1为20例接受3D打印数字模型和压力膜的患者，和接受数字双定位指南的20名患者中的实验组2。对照组共84颗前牙,实验组1有72颗前牙，实验组2有74颗前牙。该研究比较了三种制造牙冠延伸导向器的方法：对照组使用诊断蜡加压缩膜方法，而实验组1在3D打印模型上使用压缩膜，实验组2使用3D打印数字双定位牙冠延伸指南。在牙冠延长手术后,对照组患者使用DMG树脂临时冠材料进行牙龈轮廓整理，而实验组患者佩戴3D打印树脂临时冠的目的相同。患者佩戴临时冠1个月后在门诊随访,3个月,6个月,分别。临床结果根据边缘拟合进行评估，红色审美指数，和白色审美指数。
结果：根据统计分析，与对照组相比,实验组需要的随访次数显著减少,指南设计和制作时间显著减少.此外,实验组手术时间明显短于对照组。在术后第1个月和第3个月之间，边缘牙龈水平的PES指数得分，近端,实验组远端中远端的牙龈乳头显示出优于对照组的趋势。到了第六个月,边缘牙龈水平在实验组和对照组之间表现出显著差异。实验组在形状方面表现出优于对照组的结果，轮廓,和牙齿的体积，颜色,表面纹理,以及修复的透明度，以及术后第1个月和第3个月的特征。第六个月,比较结果表明，实验组在形状方面继续表现出优于对照组的结果，颜色,表面纹理,以及修复的透明度，以及牙齿的特征。此外,实验组在1个月时表现出明显少于对照组的牙龈改变，3个月,术后6个月，这种差异具有统计学意义。此外，利用了3D打印技术和修复技术的结合，产生一致的患者满意度。
结论：数字化在前牙美学修复中起着重要作用。运用数字化技术对前牙美容修复的全过程进行管理,可以提高修复效果,减少后续任命的数量，缩短咨询时间，达到更好的患者满意度。
