A comparison of the retention of complete denture bases having different types of posterior palatal seal with different palatal forms
Main Article Content
Abstract
Background: The most common problem associated with the lack of retention of maxillary complete denture is faulty
posterior palatal seal pps. The methods for achieving a pps include arbitrarily scraping the cast, selective pressure
technique, and the physiologic impression technique.
Material and Method: In this study forces required to dislodge a maxillary complete denture bases were compared
for different types of posterior palatal seals (PPS) with different palatal forms by using a specially designed strain
gauge force tranducer and strain measuring device. Nine male and female subjects are selected with age range
55-70 years. These patients with different palatal forms according to House's classification of palatal forms: Class I flat,
Class II intermediate and Class III high. Using different impression technique the first ordinary impression with Zincoxide
eugenol and scraping the cast for pps, the second physiological impression by using korecta wax No.4.
Result: The results show very highly significant difference, between the different designs of pps and physiological
impression for each group.
Conclusion: The physiological impression of pps give better retention because no over compression of tissues (within
the physiological limit) and concluded that the form of palate has direct influence on the retention of complete
dentures and will aid in the selection of type of posterior palatal seal needed.
posterior palatal seal pps. The methods for achieving a pps include arbitrarily scraping the cast, selective pressure
technique, and the physiologic impression technique.
Material and Method: In this study forces required to dislodge a maxillary complete denture bases were compared
for different types of posterior palatal seals (PPS) with different palatal forms by using a specially designed strain
gauge force tranducer and strain measuring device. Nine male and female subjects are selected with age range
55-70 years. These patients with different palatal forms according to House's classification of palatal forms: Class I flat,
Class II intermediate and Class III high. Using different impression technique the first ordinary impression with Zincoxide
eugenol and scraping the cast for pps, the second physiological impression by using korecta wax No.4.
Result: The results show very highly significant difference, between the different designs of pps and physiological
impression for each group.
Conclusion: The physiological impression of pps give better retention because no over compression of tissues (within
the physiological limit) and concluded that the form of palate has direct influence on the retention of complete
dentures and will aid in the selection of type of posterior palatal seal needed.
Article Details
How to Cite
Abdul Khafoor, M. (1) “A comparison of the retention of complete denture bases
having different types of posterior palatal seal with
different palatal forms”, Journal of Baghdad College of Dentistry, 24(2), pp. 11-17. Available at: http://jbcd.uobaghdad.edu.iq/index.php/jbcd/article/view/1260 (Accessed: 29November2019).
Issue
Section
Restorative Dentistry
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