Influence of Re-casting on the Attractive Force of Attract
P®
K.Yoshihara,
T.Iwai, Y.Nakamura, K.Shoji, Y.Ohno, R.Kanbara, T.Masuda, Y.Tanaka
Department of
Removable Prosthodontics,
Abstract
gAttract Ph is a castable dental alloy with
magnetic potential property for use with dental magnetic attachments. The casting properties of Attract P
permit the application of the alloy for a wide variety of different configurations
and uses as a cast magnetic keeper for the retention of prosthetic appliances.
This material is ideal for customized fabrication of magnetic attachment
keepers intended for space restricted clearance uses such as restricted
occlusal clearance or the use with vital dentitions.1)
The@casting procedure for castable dental alloys may
require individual non-contaminated casting ingot use to prevent alloy
contaminations that would impair the cast alloy physical properties. Another
potential area of cast alloy physical property degradation may be the repeat
casting of an alloy also causing changes in physical property. The effect of
multiple melt and casting re-use upon magnetic attractive force for this
specialized castable alloy has not been reported. No reports have been available regarding
the influence of recasting on attractive force have been made.
Recasting was performed to fabricate a
custom-made keeper using a new ingot and melting new alloy ingots. The
influence of alloy recasting using a previously cast ingot and cruicible on
attractive force was investigated