The aim of this study was to establish a specific proportional correlation method for space analysis in mixed
dentition applicable to the Italian population.
A retrospective analysis was performed on 300
plaster models taken from Italiansubjects, 156 females and 144 males, aged between 12 and 25 years, visited at the
Department of Orthodontic and Paediatric Dentistry of the University of Messina.
The variance analysis (ANOVA)
showed a high correlation between the dimension of the mesio-distal diameters of the four mandibular incisor and those of
the upper canine and premolars. The correlation coefficient showed the existence of a directly proportional, positive intra-
dependence between the two groups. DISCUSSION: The correlation tables used in the present study appear to be much
more accurate if applied to groups of patients with similar ethnic backgrounds, thus explaining the differences between the
various prediction indexes found in previous publications.
This study highlights the need to develop specific
values to fit the features of the different ethnic groups.
Vol.13 – n.2/2012
Harvard: M. Portelli, G. Matarese, A. Militi, G. Cordasco, A. Lucchese (2012) "A proportional correlation index for space analysis in mixed dentition derived from an italian population sample", European Journal of Paediatric Dentistry, 13(2), pp113-117. doi:
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