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Fit of direct retainers in removable partial dentures after 8 years of use
Author(s) -
KELTJENS H. M. A. M.,
MULDER J.,
KÄYSER A. F.,
CREUGERS N. H. J.
Publication year - 1997
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.1365-2842.1997.tb00306.x
Subject(s) - dentures , removable partial denture , dentition , orthodontics , dentistry , logistic regression , molar , medicine , mathematics
summary In a cross‐sectional study the fit of direct retainers was assessed after 8 years of use. A total of 101 metal frame removable partial dentures (RPD) were investigated, including 54 extension base prostheses without any tooth supported replacement and 47 tooth supported prostheses that replaced only premolars and molars. Of the frameworks studied, about 60% of the clasps showed a space between retainers and abutments. Logistic regression analyses demonstrated that the age of the RPD and the type of opposing dentition significantly influenced the fit of the clasps. The relative risks and a backward regression analysis revealed that the variable non‐rigid extention base RPD had the greatest influence on clasp fit. It was concluded that in extension base RPDs a rigid design should be preferred.