Abstract
Aims: The present study aims to estimate the effect of maxillary canine displacement on the arch measurements including ( inter 1st premolar width, inter1st molar width, inter2nd molar width, arch length, and arch perimeter). Materials and Methods: Maxillary dental study casts of 105 patients attending the orthodontic department of dentistry college, University of Mosul. The casts were photocopied and then all the measurements accomplished with the aid of AutoCAD 2010 software program (Automatic Computer Aided Design). The statistical analysis were done using software package (SPSS 11.5). Results and Discussion: The results showed significant difference among the variables at (p < 0.001, p < 0.05 ), the maxillary transverse dimensions were greater in the control group than in the canine displacement group and this may be attributed to that the displaced canine subjects have narrower dental arch than that for the normal subjects, also the results show that the mesiodistal dimensions of maxillary teeth in the canine displacement group were wider in comparison to the control group. Conclusion: The displaced canine position affect the arch width resulting in a narrow transverse arch measurement. In addition, the results of the arch perimeters indicate wider teeth for displaced canine group compared to control group.
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