Dental Age Estimation by Different Methods in Patients With Cleft Lip and Palate

Willems method measures the developmental stages of the seven left permanent mandibular teeth and is frequently used for dental age estimation. The score of each stage is allocated, and the sum of the scores provides an evaluation of the subject's dental maturity.

Cameriere et al. designed a quantitative approach through a formula based on sex and the ratio between length and apex opening measurements of each lower left tooth.

The London Atlas requires the user to assess the tooth development and eruption and then match it to one of the 31 pictures of age categories.