Abstract
116 Poly-Sulfone Dentures (PSDs) have been set to 86 patients over a period of one year from June 1981 ot May 1982. We obtained following results by surveying postoperative conditions of these PSDs.
1) We observed 27 PSD troubles which were set to 23 patients. Most of the troubles were breakage of denture base and displacement of artificial tooth.
2) We think that the main factors of PSD base breakage were due to its tendency to deflect for the PSD's small modulus of elasticity and the lack of resistance to fatigue.
3) We could think that the main factors of displacement of artificial tooth were due to no presence of adhesion between PS and artificial tooth, no full injection of PS into the retention holes and its nature of easy deflection.
