Validity and reliability of palatal rugae morphometric assessment with 3D laser scanned models

Authors

DOI:

https://doi.org/10.20396/bjos.v21i00.8665924

Keywords:

Forensic dentistry, Forensic anthropology, Imaging, three-dimensional, Palate

Abstract

Aim: To assess the reliability and validity of morphometric features on 3D digital models produced by scanning maxillary dental casts of Malaysian Malay subjects. Methods: Dental casts of 20 subjects were scanned using a 3D laser scanner (Next Engine Inc., Santa Monica, California, USA). The palatal rugae morphometric features were assessed on the resulting 3D models using 3-Matic Research 9.0 software (Materialise NV, Heverlee, Belgium). The assessments were repeated by the first and second authors to assess the intra- and interexaminer reliability, respectively. Rugae morphometric features were also evaluated on the conventional plaster models to assess the validity of the 3D method. Results: Kappa values of the validity ranged from 0.807 to 0.922 for rugae shape, size category and direction. The intraclass correlation coefficient (ICC) for rugae number validity was 0.979. For intra-examiner reliability, kappa values ranged from 0.716-1.000 for rugae shape, size category and direction. The ICC for rugae number intra-examiner reliability was 0.949. Kappa values of interexaminer reliability for rugae shape, size category and direction were 0.723-885, while the ICC of rugae number was 0.896. Conclusion: Palatal rugae analyses on 3D digital models scanned by the 3D Next Engine laser scanner using 3-Matic Research 9.0 software are valid and reliable.

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Author Biographies

Abdullah Abdulkhaleq Alselwi, Universiti Sains Malaysia of Science

SSchool of Dental Sciences, Health Campus, Universiti Sains Malaysia of Science, Malaysia, 16150 Kota Bharu Kelantan.

Mohd Fadhli bin Khamis, Universiti Sains Malaysia of Science

School of Dental Sciences, Health Campus, Universiti Sains Malaysia of Science, Malaysia, 16150 Kota Bharu Kelantan. Forensic Odontology and Oral BIology Unit, Hospital Universiti Sains Malaysia, Health Campus 16150 Kota Bharu Malaysia.

Johari Yap Abdullah, Universiti Sains Malaysia of Science

School of Dental Sciences, Health Campus, Universiti Sains Malaysia of Science, Malaysia, 16150 Kota Bharu Kelantan.

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Published

2022-01-03

How to Cite

1.
Alselwi AA, Khamis MF bin, Abdullah JY. Validity and reliability of palatal rugae morphometric assessment with 3D laser scanned models. Braz. J. Oral Sci. [Internet]. 2022 Jan. 3 [cited 2022 May 25];21(00):e225924. Available from: https://periodicos.sbu.unicamp.br/ojs/index.php/bjos/article/view/8665924

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Original Research