Square, square–tapered and triangular tooth shape: Periodontal phenotype determinants.

Dr. Rizwan M. Sanadi; Dr. Susmita R. Bhakkand; Dr. Kalyani Ramteke

Volume : VII, Issue : IX, September - 2017

Square, square–tapered and triangular tooth shape: Periodontal phenotype determinants.

Dr. Rizwan M. Sanadi, Dr. Susmita R. Bhakkand, Dr. Kalyani Ramteke

Abstract :

Background: It has been long known that the clinical appearance of healthy marginal periodontium differs from subject to subject and even among different tooth types. Many features are genetically determined; others seem to be influenced by tooth size, shape and position and biological phenomena such as gender, growth and age.

Aim: To assess correlation between different tooth shapes and gingival and periodontal characteristics.

Material and Methods: 60 subjects (34 females & 26 males) were included in the study. Clinical measurements; width and height of maxillary central incisors, extent of the keratinized mucosa (KM), gingival thickness (GT), depth of the sulcus (SD), bone–sounding depth (BS) and height of interproximal maxillary central papilla (Ph),contact surface length(CS) were assessed. Subjects were then divided into three groups based on the shape of maxillary central incisors: triangular; square; or square–tapered. The measurements were recorded and subjected to statistical analysis.

Results: There were no significant differences among the three groups in terms of the SD (p = 0.178), the BS (p = 0.183), extent of KM (p=0.356) whilst statistically significant differences were observed for the GT (p = 0.001), Ph (p =0.001), contact surface length (p =0.001); height and width of the crown (p=0.002, p=0.033).

Conclusion: Different tooth shapes are associated with significantly different values for its GT, with the Ph, contact surface length; height of the crown; and width of the crown.