222 - A Novel Formula to Predict Tooth Eruption Patterns in Pediatric Patients

Abstract:

Purpose:
To develop a novel mathematical formula predicting the number of permanent teeth in patients
between the ages of 6 and 12 years, allowing for prediction of a patient’s dental age, advanced or delayed.

Methods:
The patients, aged between 6 and 12 years, were randomly selected from the pool of patients seen at
the University of Nevada, Las Vegas, School of Dentistry, Graduate Pediatric Dental Clinic between
July and September 2024. Their radiographs, which included periapical, bitewing, and panoramic images were evaluated. The radiographs were used to determine the number of erupted permanent teeth.

Results:
These samples were plotted with the number of permanent teeth
on the y-axis, and the patient's age in months on the x-axis. A linear regression analysis was
performed to determine the best-fit line for the data. The resulting equation was:
Number of permanent teeth (y) = 0.3024x−17.847, R2 = 0.7979, indicating a
strong linear relationship between the patient’s age and the number of erupted permanent teeth.
This result suggests that age is a reliable predictor of the number of permanent teeth present in
patients between the ages of 6 and 12. The equation can be also expressed as:
y = 3/10 x − 18, where x = patient’s age in months

Conclusion:
The findings of this study contribute to the field of pediatric dentistry by providing a
mathematical model that predicts the number of permanent teeth based on a patient's age. This
model can assist in making clinical judgement and accurate assessments of dental
development.

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