Reliability of Tooth Width Measurements Delivered by the Clin-Check Pro 6.0 Software on Digital Casts: A Cross-Sectional Study

Abstract

The purpose of this study was to assess the accuracy and reliability of tooth width measurements and Bolton Indices delivered by the Clin-Check Pro 6.0 software (Align Technology, San José, CA, USA). Fifty-four plaster casts were selected and measured with a manual calliper by a trained and calibrated observer. The data gathered were compared with those delivered by the software on the corresponding fifty-four virtual casts. The method reliability of the software was assessed by comparing the measurements performed by the software on 201 pairs of clin-checks corresponding to two consecutive treatment phases. Accuracy and reliability were statistically assessed using a mixed model. The software tends to provide larger widths compared with the manual method. Statistically significant differences were found in 23 teeth. At a global level, the mean difference between the methods was −0.19 mm, with a Dahlberg error of 0.24 mm and an intraclass correlation coefficient of 0.98. The Bolton Indices delivered by the two methods had a moderate correlation (ICC = 0.59; 0.69). The within method reliability of the software was extremely high. Tooth width measurements delivered by the software, despite the positive bias, can be considered accurate and clinically acceptable for all teeth except molars. The Bolton Indices made available by the software are not accurate and clinically acceptable, especially in the case of mandibular excess.

Evaluating Measurements: A Comparative Study of Digital and Plaster Models for Orthodontic Applications in Mixed Dentition

“…Notably, a trend of greater underestimation was observed, particularly in posterior teeth. In contrast, Adobes et al [18] reported the opposite, with ClinCheck Pro tending to display larger widths. Soto-Alvarez et al [19] and Rajshekar et al [20] found substantial agreement with no statistically significant differences between the cast and digital models.…”

Prosthetic Oral Rehabilitation with CAD/CAM Suprastructures in Patients with Severe Tissue Deficits: A Case Series

“…In the field of dentistry, the digital workflow is increasing and offering viable impression, design, and manufacturing protocols for prosthetic dentistry [41]. However, multiple different scanners and types of software are available, and features such as trueness, accuracy, and precision are important to comprehend and to be evaluated in order to obtain the proper information and possible limitations about the system used [42].…”

Association between crowding estimation and extraction recommendations in orthodontics

“…Four weeks after the initial measurements, the same student repeated crowding analysis on each model in a random order. The decision to measure crowding on physical rather than digital models was based on variation in study findings, with some reporting digital measurements to be larger than manual measurements, and others finding them to be smaller (Adobes et al, 2022, Naidu et al, 2013, Santoro et al, 2003, Shailendran et al, 2021. The assessor was blinded to all records and patient identifiers during the measurement process.…”