Abstract:
Present study was aimed to investigate the frequency of anterior tooth size discrepancy in Angle’s
class I and class II malocclusion groups seen at Bahria University, Karachi.
Male and female subjects were randomly selected and assigned to two dental malocclusion groups
according to Angle’s classification class I, and II. Total number of subjects were 108 (55casts of Angle’s
Class I and 53 casts of Class II malocclusion). Sampling technique was non-probability, purposive
type with anterior permanent teeth erupted in the upper and lower arches. The width of each tooth
was measured from its mesial contact point to its distal contact point at its greatest interproximal
distance. Bolton’s anterior (canine to the canine) ratios were calculated.
Gender distribution was 29 males and 78 female with mean anterior ratio of class I (mean =2.33)
and class II (mean = 2.51) On comparison of anterior ratio no significant difference was found between
class I and class II malocclusion groups which was indicated by the p value (p = 0.565).
The use of the actual millimeters of correction for the tooth size ratios could help orthodontists avoid
underestimating the prevalence of clinically significant tooth size discrepancy
