Development and validation of a python-based pont’s index analysis tool: A technical validation study

V Bedre, Vinay; Mahajan, Sushil; Shrivastav, Trilok

Visibility 23 Views
Downloads 17 Downloads
Permissions
DOI 10.18231/j.ijodr.12544.1917624119
CrossMark
Citation

Development and validation of a python-based pont’s index analysis tool: A technical validation study

Author Details:

Vinay V Bedre ^*

Sushil Mahajan

Trilok Shrivastav

IP Indian Journal of Orthodontics and Dentofacial Research. 11(3):242–246, 2025. | 10.18231/j.ijodr.12544.1917624119

View PDF

Background: Pont’s Index is a very well know and important index in orthodontics, this index remains an integral tool for assessing dental arch proportionality, yet manual calculations are prone to errors and time-intensive. This study describes the development and validation of a Python-based application for standardized arch dimension analysis.
Materials and Methods: The application was developed using Python Tkinter, implementing Pont’s original methodology with mandibular conversion logic. Validation included 50 arch analyses (25 simulated, 25 clinical) evaluated by three orthodontists. Reliability was assessed using intraclass correlation (ICC) and calculation accuracy metrics.
Results: The tool demonstrated perfect reliability (ICC = 1.00, 95% CI: 0.99–1.00) with manual calculations. Analysis time decreased from 3.5 ± 0.9 minutes (manual) to 0.4 ± 0.1 minutes (automated). Clinical interpretations showed 96% agreement with expert judgment.
Conclusion: This digital Pont’s analyzer improves diagnostic efficiency while maintaining analytical precision, particularly valuable for initial arch assessment in orthodontic treatment planning.

References

Pont A, Der Zahn Index in der Orthodontie. zeitschrift fur Zahnartzliche Orthopedie.1909.3:306–21
Younes SA. Maxillary arch dimensions in Saudi and Egyptian population sample. Am J Orthod. 1984;85(1):83–8. doi:
1016/0002-9416(84)90126-x.
Al–Sarraf HA, Abdulmawjood A, Alsayagh N. Re–assessment of Pont’s index in Class I normal occlusion. Al-Rafidain Dental Journal. 2006;6(1):1–5. doi:10.33899/rden.2006.40173
[Google Scholar]
Nawi N, Mohamed AM, Nor MM, Ashar NA. Correlation and agreement of a digital and conventional method to measure arch parameters. J Orofac Orthop. 2018;79(1):19–27. doi: 10.1007/ s00056-017-0111-3.
Elm EV, Altman DG, Egger M, Pocock SJ, Gøtzsche PC, Vandenbroucke JP. The strengthening the reporting of observational studies in epidemiology (STROBE) statement: guidelines for reporting observational studies. Int J Surg. 2014;12(12):1495–9. doi: 10.1016/j.ijsu.2014.07.013
[Google Scholar]
Zahw EK, Albelasy NF, Fouda AM. Credibility of Pont’s index in Egyptian population. BMC Oral Health. 2024;24(1):1008. doi: 10.1186/s12903-024-04715-7
[Google Scholar]
Bishara SE, Jakobsen JR, Treder J, Nowak A. Arch width changes from 6 weeks to 45 years. Am J Orthod Dentofacial Orthop. 1997;111(4):401–9. doi: 10.1016/s0889-5406(97)80022-4
[Google Scholar]
Dung TM, Ngoc VTN, Hiep NH, Khoi TD, Xiem VV, Chu-Dinh T, et al. Evaluation of dental arch dimensions in 12 year-old Vietnamese children—A cross-sectional study of 4565 subjects. Sci Rep. 2019;9(1):3101. doi: 10.1038/s41598-019-39710-4
[Google Scholar]

IP Indian Journal of Orthodontics and Dentofacial Research

Development and validation of a python-based pont’s index analysis tool: A technical validation study

Author Details: Vinay V Bedre * Sushil Mahajan Trilok Shrivastav

References

How to Cite This Article

Vancouver

APA

MLA

Chicago

Author Details:

Vinay V Bedre ^*

Sushil Mahajan

Trilok Shrivastav