Determination of the Frequency of Various Anatomical Forms of the Hard Palate for Complete Denture Fabrication

Muhammad Waqas 1              BDS, FCPS
Nazia Yazdanie2                      BDS, FCPS, MSc, PhD
Khuda-e-Dad3                         BDS, FCPS
Hina Aslam4                            BDS
Ayesha Bashir5                       BDS, FCPS
Mohid Rehman6                      BDS, FCPS

OBJECTIVE: To determine the frequency of patients with various anatomical forms of the hard palate for complete denture
fabrication and to compare the mean distortion in heat cure denture base polymer in millimetres in different hard palate forms.
METHODOLOGY: Informed consent was taken from total of seventy six patients and divided into low and medium hard palate
forms. Dental casts were prepared from alginate impression and poured in type III stone and reference point R was marked on
the deepest part of the posterior palatal seal area at the junction of hard and soft palate on each cast. After curing, the cast along
with the cured denture base was retrieved from the flask. After 48h of curing cycle the distortion was measured in millimetres
from R to R' via traveling microscope.
RESULTS: Among seventy six participants the frequency of low palate forms was 45 (59.2%) and medium palate forms was
31 (40.8%). For each sample three readings were taken R1, R2 and R3. The mean distortion measured in low hard palate form
was 0.52mm with a standard deviation of 0.18, the mean distortion measured in medium hard palate form was 0.76mm with a
standard deviation of 0.27, which were clinically significant with a p-value of 0.0001.
CONCLUSION: The hard palate forms has direct influence on retention of maxillary complete denture in posterior palatal area.
KEY WORDS: Heat Cure denture base, distortion in hard palate forms, dimensional changes in heat cure, hard palate anatomy
and denture bases
HOW TO CITE: Waqas M, Yazdanie N, Dad KE, Aslam H, Bashir A, Rehman M. Determination of the Frequency of Various
Anatomical Forms of the Hard Palate for Complete Denture Fabrication. J Pak Dent Assoc 2022;31(3):110-113.
Received: 07 March 2021, Accepted: 05 April 2022

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