Umer Khayyam, Khalil Ahmed Alizai, Atif Jawad.
Differences In Tooth Size Ratio Between Male And Female Patients Reporting To OPD Of Orthodontic Department Bhitai Dental & Medical College Mirpurkhas.
Pak Oral Dental J Jan ;37(1):79-82.

The aim of the present study was to assess differences in tooth size ratio between male and female patients reporting to Orthodontic Department at Bhitai Dental Hospital, Mirpurkhas, Sindh. The study was carried out on 150 (75 males, 75 females) study casts. Criteria for selection of the study casts were pretreatment orthodontic casts with Angle Class I and fully erupted permanent teeth with no dental anomalies. The individual mesiodistal tooth size was measured with a Boley’s gauge. The mean and standard deviation was calculated for the size of the teeth and the interarch tooth width ratios both anterior and overall. The ratios for the tooth size were compared to the original Bolton ratio. The overall ratio was found to be 91.61almost equivalent to the original Bolton ratio of 91.3, whereas the anterior ratio was found to be 79.70, higher than the 77.1 as calculated by Bolton. The mean values for the overall and anterior ratio for the male and female subjects determined which significant. Standard deviations for overall were not statistically & anterior ratio were larger than the Bolton’s value. There were no significant differences between the mean overall and anterior tooth width ratio of males and females. Even though the values were not significantly high, a careful analysis of interarch tooth size relationship (Bolton’s ratio) should be added along with other diagnostic considerations before initiating orthodontic treatment for better finishing and stability.

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