Related Experiment Video
Updated: May 2, 2026

Systematic Approach to Identify Novel Antimicrobial and Antibiofilm Molecules from Plants' Extracts and Fractions to Prevent Dental Caries
Published on: March 31, 2021
Hormonal fingerprints: a key to early diagnosis of caries
Priya Verma1, Amitha M Hegde, R Narayanacharyulu
1Departments of Pedodontics and Preventive Dentistry; ITS Centre for Dental Sciences and Research, Ghaziabad, Uttar Pradesh, India.
Background:
6-n-propylthiouracil (PROP) is one of the widely used anti-hyperthyroid drug used for the treatment of grave's disease. A medicated tool despite being non-invasive, economical and giving reliable results presented with some difficulties, which became prevalent in our subsequent studies, thus prompting us to formulate a new method for predicting oral health status and diseases like diabetes occurring in India.
Aim And Objectives:
The current paper would be focusing on the new biological marker-Hormonal Fingerprint that is under trial to predict children for their caries risk susceptibility.
Materials And Methods:
A total of 250 children were selected of age group 6-16 years and PROP sensitivity test was carried out by placing a strip on the dorsal surface of the subject tongue. The hormonal fingerprint was made by measuring the length ratio of the index and ring finger with the help of digital vernier caliper.
Statistical Analysis Used:
The statistical method employed to compute the results were Pearson's Chi-square test and analysis of variance.
Results:
Overall results suggested positive correlation between low second-to-fourth digit ratio(2D:4D), i.e. high prenatal androgen levels and high caries index in an Indian population.
Conclusion:
The research confirms the impact of hormones on human perception of taste and dietary preferences, which in turn influence their caries index and could also extend way beyond it.
Related Concept Videos
Tooth Anatomy
The Crown, Neck, and Root
The visible part of the tooth is referred to as the crown. It's covered by enamel, the hardest substance in the human body. The crown is uniquely shaped for each type of tooth, allowing for different functions such as cutting, tearing, or...
Teeth
In the bud stage, the tooth germ (an aggregation of cells) starts to form in the developing jawbone. During the cap stage, the tooth germ differentiates into enamel organ, dental papilla, and dental sac, which will later develop into the tooth's enamel, dentin...

