Evaluating point cloud density, surface topography, and accuracy across six extraoral scanners: A correlational and 3-dimensional (3D) comparative study
Journal of Prosthetic Dentistry, cilt.136, sa.1, 2026 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 136 Sayı: 1
- Basım Tarihi: 2026
- Doi Numarası: 10.1016/j.prosdent.2026.01.032
- Dergi Adı: Journal of Prosthetic Dentistry
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, CINAHL, EMBASE, MEDLINE
- Sağlık Bilimleri Üniversitesi Adresli: Evet
Özet
Statement of problem: Accurate digital scans are critical for clinically acceptable restorations, yet the influence of point cloud density and mesh topology on dimensional fidelity remains unclear. Purpose: The purpose of this in vitro study was to compare 6 extraoral scanners (EOSs) in terms of trueness, precision, and surface morphology and to examine the relationship between geometric density metrics and coordinate-specific deviations. Material and methods: A mandibular complete arch model with 5 abutments was scanned using 6 devices (10 scans each). A calibrated industrial structured-light scanner (ATOS Core 200) served as the reference device. Trueness (RMS), precision, point density, triangle count, and axis-specific deviations were analyzed with Geomagic and CloudCompare. Statistical tests included nonparametric analyses, 3-way ANOVA, and Spearman correlations (α=.05). Results: Significant differences were found among scanners (P<.05). DOF showed the highest trueness, E3 highest precision, and MEDIT lowest performance. Mesh density correlated weakly with accuracy. Z-axis deviations exceeded X and Y (P<.001). Conclusions: All scanners met clinical thresholds, but device-specific differences and vertical errors should be considered in complete arch applications.