Dentition/Teeth Measurement Clinical Trial
Official title:
Validity, Reliability and Reproducibility of Digital Models Obtained With iTero® (AlignTech) and Lava Digital® (3M) in Comparison With Plaster Models.
The purpose of this study is to evaluate the validity, reliability and reproducibility of digital models obtained from iTero® and Lava Digital® in comparison with traditional plaster models.
The primary objective of this study is to evaluate the validity, reliability and
reproducibility of the dental measurements obtained on the digital models with iTero® in
comparison with those obtained on the plaster models (gold standard) and on the digital
models with Lava Digital®.
The secondary objective is to compare two different impression materials (i.e. alginate and
polyvinylsiloxane (PVS)) and determine whether the impression material used affects the
accuracy of the measurements.
Statistical analysis:
- Intraclass correlation coefficient (ICC) will be used to evaluate the intra- and
inter-operator reliability of the measurements for each method, i.e. the plaster models
and the digital models.
- A paired t-test will be used to determine the validity of the digital measurements with
iTero®, and to compare the impression materials (alginate and PVS).
- A Bland-Altman plot will also be used to compare the two digital methods (Lava Digital®
et iTero®) with the plaster models.
- Dahlberg coefficient will be used to evaluate the technical error associated with the
measurements that will be made.
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Observational Model: Case-Only, Time Perspective: Prospective