These groups were characterized by a high frequency of cusp expression of the cusp of Carabelli, the X cusp pattern and the + cusp pattern.
This occurred in such a way that a group of Mestizos in the city of Cali was characterized in a simplification of the dental morphology as having a low frequency of the cusp of Carabelli (this trait was expressed ambiguously in their fossa forms - characteristic of sinodonts - and cuspids of medium size - a characteristic of Caucasoids), a reduced hypocone (a property of Western Caucasoid groups) and the high frequency of the point P of the protostylid (an exclusive feature of Amerindian populations) (4).
Talon cusp can be found in isolation or in association with other dental anomalies such as peg-shaped lateral incisors, shovel-shaped incisors, bifid cingulum, unerupted canines and the large cusp of Carabelli
, dens invagi-natus, supernumeraries and complex odon-tomas (2, 23, 26).
The aim of this study was to determine the prevalence of cusp of carabelli in permanent teeth in a sample from the population of Khyber Pakhtunkhwa.
Key words: Cusp of Carabelli, Unilateralism, Khyber Pakhtunkhwa
The cusp of carabelli is a nonfunctioning mini cusp or tubercle or groove or furrow that occurs on the mesiopalatal cusp at mesiopalatal line angle in maxillary first permanent molar but does not occur on maxillary second deciduous molar.
Cusp of carabelli is entirely absent in some individuals and present in others in a variety of forms.
Patients attending outpatient department and students of Khyber College of Dentistry, Peshawar were examined in the ordinary chair for the presence or absence of cusp of Carabelli on maxillary first and second permanent molar using torch light, mouth mirror and probe.
Each patient was examined by two researchers to confirm the presence of cusp of carabelli or otherwise.
TABLE 1: PREVALENCE OF CUSP OF CARABELLI IN MALES AND FEMALES