Effects of Scanning Strategy and Scanner Type on the Accuracy of Intraoral Scans: A New Approach for Assessing the Accuracy of Scanned Data

Journal of Prosthodontics : Official Journal of the American College of Prosthodontists
Kyung Chul OhHong Seok Moon

Abstract

This study aimed to determine the most reliable scanning strategy and scanner type, using a new protocol for assessing the accuracy (trueness and precision) of intraoral scan data. Five different maxillary and mandibular typodont pairs (n = 10) and 2 intraoral scanners were used for the study. A reference scan for each arch was obtained with an industrial scanner. Scanning strategies were classified into 2 continuous methods-continuous scan in horizontal direction (CH group) and continuous scan with vertical rotation in anterior region (CV group)-and 1 segmental method (S group). In the CH group, the scanner head was maintained mostly in a horizontal position. In the CV group, the scanners were rotated 180° around the anterior tooth region to allow smooth scanning through the area. The intraoral scan data were individually superimposed over their corresponding reference scan data. Raw data of the distances between paired surface points were extracted from the superimposed pairs of datasets, with (original distance values) or without consideration (absolute distance values) of the value signs. Trueness values were calculated using absolute distance values, while precision values were obtained from original distance values. Data ...Continue Reading

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Citations

Jan 26, 2021·The Journal of Advanced Prosthodontics·Min-Kyu KimKyu-Bok Lee
Mar 9, 2021·Korean Journal of Orthodontics·Miran KwonMinho Chang
Apr 15, 2021·Journal of Prosthodontics : Official Journal of the American College of Prosthodontists·Douglas A PorrLing Ye
Apr 9, 2021·Journal of Prosthodontics : Official Journal of the American College of Prosthodontists·Yuming ChenTamaki Nakano

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