Accuracy of full arch scans performed with nine different scanning patterns- an in vitro study.

IF 3.1 2区医学 Q1 DENTISTRY, ORAL SURGERY & MEDICINE

Clinical Oral Investigations Pub Date : 2025-01-27 DOI:10.1007/s00784-025-06154-2

Kerstin Schlögl, Jan-Frederik Güth, Tobias Graf, Christine Keul, Kerstin Schlögl

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引用次数: 0

Abstract

Objective: Evaluation of the accuracy of direct digitization of maxillary scans depending on the scanning strategy.

Materials and methods: A maxillary model with a metal bar as a reference structure fixed between the second molars was digitized using the CEREC Primescan AC scanner (N = 225 scans). Nine scanning strategies were selected (n = 25 scans per strategy), differing in scan area segmentation (F = full jaw, H = half jaw, S = sextant) and scan movement pattern (L = linear, Z = zig-zag, C = combined). Trueness was assessed by evaluating linear differences in the X, Y, and Z axes and angular deviations (α axial, α coronal, α total) compared to a reference dataset. Statistical differences were analyzed using Kruskal-Wallis and Mann-Whitney U tests (p<0.017). Precision was analyzed by the standard deviation of linear and angular aberrations (ISO 5725-1) (p < 0.05).

Results: Strategy F_L showed significantly higher trueness and precision than F_Z for VE (p = 0.009), V_E(y) (p = 0.010), α_overall (p = 0.004), and α_axial (p = 0.002). Strategy F_C demonstrated significantly better trueness than F_Z for VE (p = 0.007), α_overall (p = 0.010), and α_coronal (p = 0.013). For scan segmentation, F_L showed better trueness for V_E(y) (p = 0.001) and α_axial (p < 0.001) than H_L. Strategy H_L showed better trueness for V_E(z) than for F_L and S_L (p = 0.001, p = 0.002). The scanning patterns F_L, F_C, and H_L exhibited the best performance for trueness and precision.

Conclusions: Scanning motion and segmentation have a significant impact on the trueness and precision of full-arch scans.

Clinical relevance: The scanning strategy is decisive in enhancing the clinical workflow and the accuracy of full-arch scans.

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目的根据扫描策略评估上颌扫描直接数字化的准确性：使用 CEREC Primescan AC 扫描仪（N = 225 次扫描）对固定在第二臼齿之间、以金属棒为参考结构的上颌模型进行数字化。选择了九种扫描策略（每种策略 n = 25 次扫描），扫描区域划分（F = 全颌、H = 半颌、S = 六分仪）和扫描移动模式（L = 线性、Z = 之字形、C = 组合）各不相同。与参考数据集相比，通过评估 X、Y 和 Z 轴的线性差异和角度偏差（α 轴向、α 冠状、α 总）来评估真实度。统计差异采用 Kruskal-Wallis 和 Mann-Whitney U 检验进行分析（pResults：在 VE (p = 0.009)、VE(y) (p = 0.010)、α 总体 (p = 0.004) 和 α 轴向 (p = 0.002) 方面，FL 策略的真实度和精确度明显高于 FZ。在VE（p = 0.007）、α总体（p = 0.010）和α冠状面（p = 0.013）方面，FC策略的真实度明显优于FZ策略。在扫描分割方面，FL 对 VE(y) (p = 0.001) 和 α 轴向 (p = 0.003) 显示出更好的真实性。与 FL 和 SL 相比，策略 HL 在 VE(z)方面显示出更好的真实度（p = 0.001，p = 0.002）。扫描模式 FL、FC 和 HL 在真实度和精确度方面表现最佳：结论：扫描运动和分割对全拱形扫描的真实度和精确度有显著影响：扫描策略对提高临床工作流程和全牙弓扫描的准确性起着决定性作用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Clinical Oral Investigations 医学-牙科与口腔外科

CiteScore

6.30

自引率

5.90%

发文量

484

审稿时长

3 months

期刊介绍： The journal Clinical Oral Investigations is a multidisciplinary, international forum for publication of research from all fields of oral medicine. The journal publishes original scientific articles and invited reviews which provide up-to-date results of basic and clinical studies in oral and maxillofacial science and medicine. The aim is to clarify the relevance of new results to modern practice, for an international readership. Coverage includes maxillofacial and oral surgery, prosthetics and restorative dentistry, operative dentistry, endodontics, periodontology, orthodontics, dental materials science, clinical trials, epidemiology, pedodontics, oral implant, preventive dentistiry, oral pathology, oral basic sciences and more.