Aim: To determine the most common rugae pattern and
to find if it has any association with dental arch form or malocclusion.
Study Design and setting: It was a retrospective cross-sectional study
conducted using the records of 200 patients visiting the Orthodontic Outpatient
department of Bahria University Medical and Dental College.
Methodology: Number, size, orientation and pattern of
palatal rugae were assessed on the plaster models. Dental malocclusion along
with dental arch form and width were also evaluated. Descriptive statistics
such as frequencies were analyzed. Chi square, Fischer exact test and One Way
ANOVA was used to see the significance of differences, p≤0.05 was considered as
Results: The sample comprised of class I (n=97), class
II(n=87) and class III(n=16).113 cases
had inter-molar width >44mm while 87 had ≤44mm. Posterior orientation of the
rugae, was pre-dominant for both right (n=100) and left (n=122) first rugae.
The most common pattern was curved for both first rugae on right (n=66) and
left (n=72) sides.
Conclusion: Our study showed that the rugae pattern, size
and numbers did not show significant variation in different malocclusion
classes. It can be concluded that rugae pattern do not have any significant
association with malocclusion class or arch form.