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CC BY-NC-ND 4.0 · Eur J Dent 2016; 10(02): 176-182
DOI: 10.4103/1305-7456.178299
Original Article
Dental Investigation Society

Intermaxillary tooth size discrepancy in a Pakistani population: A stereomicroscope versus digital caliper

Fazal Shahid
1   Orthodontic Unit, School of Dental Science, Universiti Sains Malaysia, Kelantan, Kubang Kerian, 16150, Malaysia
,
Mohammad Khursheed Alam
1   Orthodontic Unit, School of Dental Science, Universiti Sains Malaysia, Kelantan, Kubang Kerian, 16150, Malaysia
,
Mohd Fadhli Khamis
2   Forensic Dentistry Unit, School of Dental Science, Universiti Sains Malaysia, Kelantan, Kubang Kerian, 16150, Malaysia
› Author Affiliations
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Publication History

Publication Date:
23 September 2019 (online)

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ABSTRACT

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). Materials and 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.

Key words:

Arch length - arch perimeters - digital dental models - intermaxillary tooth size discrepancy
 

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