Validity and reproducibility of a tripoding method in point registration-based 3D superimposition software compared to a conventional cephalometric method
Published Online: Sep 06, 2022
Page range: 281 - 289
Received: Feb 01, 2022
Accepted: Jul 01, 2022
DOI: https://doi.org/10.2478/aoj-2022-0030
© 2022 Nor Nadia Zakaria et al., published by Sciendo
This work is licensed under the Creative Commons Attribution 4.0 International License.
Objective:
The present study aimed to assess the validity and reproducibility of a tripoding reference method for digital study cast superimposition to measure maxillary tooth movement.
Methods:
This retrospective study used 30 treated orthodontic cases which required premolar extractions. Pre- and post-treatment cephalograms were conventionally superimposed, while digitised study casts were superimposed using point registration-based software (Materialise 3-matic Research 12.0) and a tripoding method. This method involved superimposing the digital study casts using the medial two-thirds of the third palatal rugae, and the bilateral depression of the greater palatine foramen as references. Incisor and molar orthodontic tooth movements in the vertical and horizontal planes were measured using the Pancherz analysis for cephalograms and Materialise 3-matic software for the digitised study casts. Validity and agreement were assessed by a paired
Results:
The paired
Conclusion:
The tripoding method is a valid and reliable method to superimpose the maxillary study casts for measuring incisor and molar orthodontic movements but it is not interchangeable with the Pancherz analysis.