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J Clin Periodontol. 1994 Apr;21(4):225-9.

A meta-analysis of normal ranges for root surface areas of the permanent dentition.

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  • 1Department of Dental Public Health Sciences, School of Dentistry, University of Washingon, Seattle 98195.


The typical values and normal ranges of the permanent dentition root surface areas were estimated based on a meta-analysis of 4730 root surface area measurements collected from 22 published studies between 1950 and 1992. A typical dentition root surface area, excluding 3rd molars, was 75 cm2, and 95% of the dentitions had a total root surface area somewhere between 65 cm2 and 86 cm2. The prognostic significance of particular values of root surface areas for dental treatment outcomes requires further investigation.

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