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Year :2017
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Month :
March-April
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Volume :
6
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Issue :
2
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Page :
RO17 - RO20
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Comparative Study of MDCT with Plaster Cast Model of Dentoalveolar Arch Morphology
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Correspondence Address :
Nagrajmurthy, Vishwanath T Thimmaiah,
Dr. Nagrajmurthy,
Professor, Department of Radiology, JSS Hospital MG
Road, Mysuru-570004, Karnataka, India.
E-mail: jssctscan@gmail.com
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Introduction: Introduction: Dentoalveolar arch morphology and its measurements are of importance in various disciplines of dental science. It is usually studied by impression plaster cast models with mechanical calipers or scanned and digitized dental models. Multidetector Computed Tomography (MDCT) can be used to obtain similar data for the study of dentoalveolar arch morphology.
Aim: Present study was done to know the accuracy of distance measurements done by MDCT in comparison with plaster cast models. Also to determine the potential benefits and advantages of MDCT measurements over plaster cast measurements of dentoalveolar morphology.
Materials and Methods: Comparative study was carried out in 48 cases, who underwent MDCT scans of head and neck for various other causes. MDCT distance measurements of dentoalveolar arch by MDCT and plaster cast model was done. Pearson’s correlation was applied for calculation the correlation. The p-value of less than 0.05 was considered statistically significant.
Results: Out of the 48 cases, age group ranged from 5 to 53 years. Proportion of males and females were 28 (58.3%) and 20 (41.7%) respectively. MDCT measurements showed a strong positive correlation with that of plaster cast measurements (p<0.05). There was no statistically significant difference in the mean values for distance measurements except for palatal arch distance (p>0.05)
Conclusion: MDCT is a useful and reliable imaging tool to evaluate normal morphology and abnormalities of the dental arch. There was no significant differences in measurements obtained by MDCT and plaster cast, making MDCT a useful method for digital acquisition, storage and communication, which also depicts the anatomy other than dental arch.
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