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Comparative Study
. 2009 Summer;10(2):135-40.

Mixed-dentition analysis in a Turkish population

Seher Gündüz Arslan  1 , Neval Dildeş, Jalen Devecioğlu Kama, Celal Genç
Affiliations
  • PMID: 19582257
Comparative Study

Mixed-dentition analysis in a Turkish population

Seher Gündüz Arslan et al. World J Orthod. 2009 Summer.

Abstract

Objective: To study the reliability of the Tanaka-Johnston mixed-dentition analysis in Turkish individuals and develop a new population-adjusted regression equation for predicting the size of unerupted canines and premolars. The new regression equations were tested to establish their validity in Turkish children.

Methods: The mesiodistal dimensions of teeth on study casts of 12- to 14-year-old Turkish children were measured. The actual tooth measurements were then compared with predicted values using the Tanaka-Johnston equation. Subsequently, the new regression equations were tested in a group of 50 individuals to determine their validity.

Results: The Tanaka-Johnston regression equations overestimated the actual mesiodistal widths of permanent canines and premolars. With the new regression equations, no statistically significant differences were observed between actual and predicted widths.

Conclusion: The Tanaka-Johnston prediction method is not accurate when applied to a Turkish population. The new equations are reliable for predicting the width of unerupted canines and premolars in Turkish individuals.

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