Abstract
Aims: To find out the most frequent dental arch form in
Mosuli adults. Establishment of the normative values of the
upper dental arch dimensions. Materials and Methods: The
sample of this study involved students from Mosul University,
95 students (58 females, 37 males) were selected. The age of
the sample ranged between 18–25 years old. They were
normal healthy individuals of Mosul origin. Full complement
of permanent dentition, bilateral Class I molar and canine
occlusion. The data recorded in this research were subjected to
computerized statistical analysis using SPSS programs,
including descriptive statistics (mean, standard deviation,
minimum, maximum), Student’s t–test was applied to test the
significant differences between the genders. Results: There
were highly significant differences between males and
females of the vertical measurements, that males had larger
arch length than females. Also, males had larger arch width
with a highly significant difference at p < 0.01 in all width
dimensions in maxillary arches. It could be noticed that the
most prevalent arch form among the sample was the Mid form
followed by the Narrow and Wide then flat & pointed forms.
Conclusions: The mid arch form is the most frequent arch
form followed by other types. All the measured dimensions
(width and length) have significantly greater mean value in
males than in females with significant difference for linear
measurements. no significant difference in ratio between
genders.
