Comparison of Maxillary Premolar Clinical Crown Height in Adolescent and Adult Patients with Healthy Periodontics


Alagu Rathi Bharathi and Sumathi Felicita A*


One of the most crucial steps in diagnosing a smile and to provide aesthetics is to assess the clinical crown length of the teeth in the smile line. A crucial role in the functional aesthetic display has been played by the clinical crown length, not only during a full smile, but it also plays a role during speech. The ultimate length of the clinical crown of the teeth is dependent upon several factors. These factors may be genetic factors and also developmental factors. The adolescence can be grouped into three age groups including early (ages 11 - 14 years), middle (ages 15 – 17 years), and late (ages 18 – 21 years). These adolescent patients are more problematic because their stomatognathic systems have not been stabilized. Tissue migration, that is the passive eruption, as well as growth of the whole premolar tooth are ongoing during these adolescent years.


The aim of our present study is to investigate the relationship between age, gender and clinical crown length of the maxillary premolars.

Materials and Methods

The study was done in a hospital setting, the data was collected from the patient software system of Saveetha dental College and the samples included adolescent and adult patients with healthy periodontium who needed orthodontic treatment. The data was analysed using the chi Square test.


In our study it was evident that adolescents of 11 - 14 years of age had crowns of heights 3 mm and 4 mm in relation to 14, while adolescents of 15 - 17 years of age had crowns of heights 4 mm, 5 mm, and 6 mm in relation to 14, while adolescents of 18 - 21 years of age had clinical crowns of heights 7 mm and 8 mm, in relation to 14 and the adults had clinical crowns of heights 8 mm, 9 mm and 10 mm in relation to 14.