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Year : 2015  |  Volume : 7  |  Issue : 6  |  Page : 465-469

Digital model as an alternative to plaster model in assessment of space analysis

Department of Orthodontics, JKK Nattraja Dental College, Komarapalayam, Namakkal, Tamil Nadu, India

Correspondence Address:
Dr. A Anand Kumar
Department of Orthodontics, JKK Nattraja Dental College, Komarapalayam, Namakkal, Tamil Nadu
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/0975-7406.163506

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Introduction: Digital three-dimensional models are widely used for orthodontic diagnosis. The purpose of this study was to appraise the accuracy of digital models obtained from computer-aided design/computer-aided manufacturing (CAD/CAM) and cone-beam computed tomography (CBCT) for tooth-width measurements and the Bolton analysis. Materials and Methods: Digital models (CAD/CAM, CBCT) and plaster model were made for each of 50 subjects. Tooth-width measurements on the digital models (CAD/CAM, CBCT) were compared with those on the corresponding plaster models. The anterior and overall Bolton ratios were calculated for each participant and for each method. The paired t-test was applied to determine the validity. Results: Tooth-width measurements, anterior, and overall Bolton ratio of digital models of CAD/CAM and CBCT did not differ significantly from those on the plaster models. Conclusion: Hence, both CBCT and CAD/CAM are trustable and promising technique that can replace plaster models due to its overwhelming advantages.

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