The objective of this study was to evaluate of two different techniques and materials of repair for denture base. Thirty –six maxillary complete denture were constructed from final impression for different ready-made casts standard model, all maxillary denture were divided into two groups. Group (I): Eighteen conventional heat cure acrylic resin denture. Group (II): Eighteen microwave polymerized acrylic dentures base resin. Complete dentures were fractured ad prepared for repairing with different design(dove tail, bevel, butt) .Two repair materials were used to repair fractured dentures with different designs :Self cure acrylic esin and self cure acrylic resin reinforced with silver nan-particles.