Original Articles
Vol. 15 (2020)
https://doi.org/10.3269/1970-5492.2020.15.18

VALIDITY AND RELIABILITY OF MEASUREMENTS OF THE PARAMETERS OF SMILE AESTHETICS: A COMPARISON BETWEEN DIGITAL AND PLASTER MODELS

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Authors

Giuseppa Bilello
Department of Surgical, Oncological and Oral Sciences, University of Palermo, Italy, Italy.
Angela Puma
Department of Surgical, Oncological and Oral Sciences, University of Palermo, Italy, Italy.
Giuseppe Currò
Department of Surgical, Oncological and Oral Sciences, University of Palermo, Italy, Italy.
Giuseppe Pizzo
giuseppe.pizzo@unipa.it
Department of Surgical, Oncological and Oral Sciences, University of Palermo, Italy, Italy.
Antonino Puma
Private Practice, Ravanusa, Italy, Italy.
This study aims to evaluate the validity and reliability of the TRIOS3 Color intraoral scanner
(3Shape A/S, Copenhagen, Denmark) and its associated Ortho Analyzer™ software in measuring
parameters of smile aesthetics compared with measurements on plaster casts. The study sample
comprised plaster casts and digital models obtained from 30 subjects. Height (H), mesiodistal
diameter (MDD) and connecting space (CS) of the anterior teeth were measured with a digital
calliper on the plaster models and with the orthodontic software on the digital models. Validity was
assessed using a 2-tailed paired t-test; the reliability of measurements for intra-examiner was
evaluated with the Intra-class Correlation Coefficient (ICC). There were no statistically significant
differences between the measurements made with the two methods. The ICC is 99% for height and
MDD measurements, slightly lower in the evaluation of the CS. Linear measurements made on
digital model have clinically acceptable accuracy and reliability. The TRIOS3 Color intraoral
scanner represents a valuable tool for dental practice, particularly in evaluating parameters of smile
aesthetics.

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VALIDITY AND RELIABILITY OF MEASUREMENTS OF THE PARAMETERS OF SMILE AESTHETICS: A COMPARISON BETWEEN DIGITAL AND PLASTER MODELS. (2025). EuroMediterranean Biomedical Journal, 15. https://doi.org/10.3269/1970-5492.2020.15.18
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