Intermaxillary tooth size discrepancy in a Pakistani population: A stereomicroscope versus digital caliper.
OBJECTIVE
Comprehensive diagnosis and treatment planning are essential in a successful orthodontic practice. The purpose of this study is to determine and compare intermaxillary tooth size discrepancy (IMTSD) using traditional digital caliper (DC) measurement on plaster dental models and stereomicroscopic digital dental models (SM).


METHODS
The samples were randomly selected from different states of Pakistan. Total 7168 variables were measured on plaster dental casts (128) and SM digital dental models (128) according to the selection criteria. For IMTSD, the 6 variable measured as for anterior tooth size (maxilla, mandibular), overall tooth size (maxilla, mandibular), Bolton's anterior ratios (BAR), and Bolton's overall ratios (BOR). The independent t-test and ANOVA were used for statistical analyses.


RESULTS
Significant sexual disparities in the sum of anterior tooth size and overall tooth size via DC and SM methods. No significant sexual disparities for BAR and BOR. No statistically significant differences were found in BAR and BOR between DC and SM. No significant differences were found on IMTSD ratio among different arch length and arch perimeters groups.


CONCLUSIONS
Norms were developed based on DC and SM for IMTSD. Sexual disparities were observed in the sum of teeth size. However, no significant differences in BAR and BOR for IMTSD between the two methods.
Orthodontic Unit, School of Dental Science, Universiti Sains Malaysia, Kelantan, Kubang Kerian, 16150, Malaysia.
Fazal
F
Shahid
Orthodontic Unit, School of Dental Science, Universiti Sains Malaysia, Kelantan, Kubang Kerian, 16150, Malaysia.
Mohammad Khursheed
MK
Alam
Forensic Dentistry Unit, School of Dental Science, Universiti Sains Malaysia, Kelantan, Kubang Kerian, 16150, Malaysia.
Mohd Fadhli
MF
Khamis
Arch length; arch perimeters; digital dental models; intermaxillary tooth size discrepancy