Zimmermann M, Ender A, Attin T, Mehl A
Oper Dent. 2018 Nov/Dec;43(6):573-580. doi: 10.2341/17-272-C. Epub 2018 Apr 9.
: Accurate reproduction of the jaw relationship is important in many fields of dentistry. Maximum intercuspation can be registered with digital buccal scan procedures implemented in the workflow of many intraoral scanning systems.
: The aim of this study was to investigate the accuracy of buccal scan procedures with intraoral scanning devices for the registration of habitual intercuspation in vivo. The hypothesis was that there is no statistically significant difference for buccal scan procedures compared to registration methods with poured model casts.
: Ten individuals (full dentition, no dental rehabilitations) were subjects for five different habitual intercuspation registration methods: (CI) poured model casts, manual hand registration, buccal scan with inEOS X5; (BC) intraoral scan, buccal scan with CEREC Bluecam; (OC4.2) intraoral scan, buccal scan with CEREC Omnicam software version 4.2; (OC4.5β) intraoral scan, buccal scan with CEREC Omnicam version 4.5β; and (TR) intraoral scan, buccal scan with Trios 3. Buccal scan was repeated three times. Analysis of rotation (Rot) and translation (Trans) parameters was performed with difference analysis software (OraCheck). Statistical analysis was performed with one-way analysis of variance and the post hoc Scheffé test ( p<0.05).
: Statistical analysis showed no significant ( p>0.05) differences in terms of translation between groups CI_Trans (98.74±112.01 μm), BC_Trans (84.12±64.95 μm), OC4.2_Trans (60.70±35.08 μm), OC4.5β_Trans (68.36±36.67 μm), and TR_Trans (66.60±64.39 μm). For rotation, there were no significant differences ( p>0.05) for groups CI_Rot (0.23±0.25°), BC_Rot (0.73±0.52°), OC4.2_Rot (0.45±0.31°), OC4.5β_Rot (0.50±0.36°), and TR_Rot (0.47±0.65°).
: Intraoral scanning devices allow the reproduction of the static relationship of the maxillary and mandibular teeth with the same accuracy as registration methods with poured model casts.
准确重现颌关系在牙科的许多领域都很重要。在许多口腔内扫描系统的工作流程中，通过数字颊侧扫描程序可以记录最大牙尖交错位。
本研究的目的是调查使用口腔内扫描设备进行颊侧扫描程序在体内记录习惯性牙尖交错位的准确性。假设是与使用灌制模型石膏的记录方法相比，颊侧扫描程序不存在统计学上的显著差异。
10名个体（全口牙列，无牙齿修复）作为五种不同习惯性牙尖交错位记录方法的受试者：（CI）灌制模型石膏、手动记录、使用inEOS X5进行颊侧扫描；（BC）口腔内扫描、使用CEREC Bluecam进行颊侧扫描；（OC4.2）口腔内扫描、使用CEREC Omnicam软件版本4.2进行颊侧扫描；（OC4.5β）口腔内扫描、使用CEREC Omnicam版本4.5β进行颊侧扫描；以及（TR）口腔内扫描、使用Trios 3进行颊侧扫描。颊侧扫描重复三次。使用差异分析软件（OraCheck）对旋转（Rot）和平移（Trans）参数进行分析。采用单因素方差分析和事后Scheffé检验进行统计分析（p<0.05）。
统计分析显示，在平移方面，CI_Trans（98.74±112.01μm）、BC_Trans（84.12±64.95μm）、OC4.2_Trans（60.70±35.08μm）、OC4.5β_Trans（68.36±36.67μm）和TR_Trans（66.60±64.39μm）组之间无显著差异（p>0.05）。对于旋转，CI_Rot（0.23±0.25°）、BC_Rot（0.73±0.52°）、OC4.2_Rot（0.45±0.31°）、OC4.5β_Rot（0.50±0.36°）和TR_Rot（0.47±0.65°）组之间无显著差异（p>0.05）。
口腔内扫描设备能够以与使用灌制模型石膏的记录方法相同的准确性重现上颌和下颌牙齿的静态关系。
