An analysis of rotational movement of asymmetrical distal-extension removable partial dentures

An axis of rotation is created through the most distally placed occlusal rests when a distal-extension removable partial denture is loaded. If the residual ridges are of unequal lengths, this axis of rotation may not be perpendicular to the residual ridges. The resultant movement of asymmetric dentu...

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Bibliographic Details
Published inThe Journal of prosthetic dentistry Vol. 61; no. 2; pp. 211 - 214
Main Authors Aviv, I., Ben-Ur, Z., Cardash, H.S.
Format Journal Article
LanguageEnglish
Published United States Mosby, Inc 01.02.1989
Subjects
Dental Abutments
Dental Stress Analysis
Dentistry
Denture Bases
Denture Design
Denture Retention
Denture, Partial, Removable
Humans
Jaw, Edentulous, Partially - rehabilitation
Rotation
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Summary:An axis of rotation is created through the most distally placed occlusal rests when a distal-extension removable partial denture is loaded. If the residual ridges are of unequal lengths, this axis of rotation may not be perpendicular to the residual ridges. The resultant movement of asymmetric denture bases and their effect on the tissues are discussed. Movement of I-bar retainers located on the mesiobuccal aspect of asymmetrical abutment teeth may torque the abutment teeth as the denture base moves tissueward. Use of L-shaped direct retainers on the distobuccal surveyed undercut will create a more favorable class II lever effect on the abutment tooth.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
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ISSN:0022-3913
1097-6841
DOI:10.1016/0022-3913(89)90376-4