Magnetizable abutment crowns for distal-extension removable partial dentures.
A study of the retention and load-distributing characteristics of bilateral distal-extension dentures with magnetizable abutment crowns revealed the following findings: Comparable retention was obtained with the horizontal and oblique pedestals. Decreased retention was noted when there was space between the magnet and pedestal. The retention values were substantially higher than reported values for the I-bar retainer. For the space and no-space situations, the horizontal pedestal design provided better stress results than the oblique design. Better stress-distributing properties for horizontal and oblique pedestals were obtained with the presence of a space between the magnets and pedestals. Of all the designs tested, the horizontal pedestal with a space demonstrated the best load-transmission characteristics.
D000044:Dental Abutments; D003779:Denture Design; D003781:Denture Retention; D003832:Denture, Partial, Removable; D006801:Humans; D008280:Magnetics; D013314:Stress, Mechanical