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Palatal discrepancies and postdams
Author(s) -
LAMB D. J.,
SAMARA R.,
JOHNSON A.
Publication year - 2005
Publication title -
journal of oral rehabilitation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.991
H-Index - 93
eISSN - 1365-2842
pISSN - 0305-182X
DOI - 10.1111/j.1365-2842.2004.01403.x
Subject(s) - dentures , replica , sagittal plane , plaster casts , dentistry , orthodontics , materials science , medicine , anatomy , art , visual arts
summary To investigate the variation in post‐cure palatal discrepancy of dentures, 20 complete maxillary replica dentures were prepared on models with high and low palates and processed by conventional compression moulding and injection moulding. Measurements were made by travelling microscope of the sagittal midline discrepancies between palate and model on three occasions; after processing; after removal of part of the investing plaster; and after immersion in water for 1 month at 37 °C. The magnitudes of discrepancies were greatest distally, diminishing with distance anteriorly from the postdam. They increased with partial removal of plaster, and decreased slightly after immersion.