Mina W. Yassa, Amal Kaddah And Ahmed E. Fayyad,

ABSTRACT
This Study Was Conducted To Evaluate The Effect Of Cast Modifications On The Adaptation Of Maxillary Denture Base In Completely Edentulous Patients. Three Groups Of Maxillary Complete Dentures Were Fabricated. Each Group Contained 15 Dentures. The First Group Was The Control Group And Did Not Contain Any Modifications. The Second Group Was Modified By Scraping A Postdam Posterior To The Fovea Palatini. The Third Group Was Modified By Scraping A Postdam As Well As Creating A Vertical Box-shaped Depression With Pinhole. Sagittal And Coronal Cuts Were Made On All The Casts Using Specific Points. These Images Were Then Captured And Scanned Using Stereomicroscope (50X Magnification) And Then The Images Were Introduced To An Image Analysis Software For Accurate Gap Measurement. There Was A Statistical Significant Difference Between The Three Groups In Both Sagittal And Coronal Cuts In Favor Of The Modified Casts. The Dentures With Postdam Scraping And Vertical Box With Pinhole Showed Better Adaptation And Less Gap Distance When Compared To The Dentures With Postdam Scraping Only.