Denture repairs Midline fracture Repair of denture flange Repair of fracture denture tooth Repair of posterior palatal seal

MIDLINE FRACTURE Trauma Improper handling Fatigue failure Poorly designed denture Unrelieved area Arrangement of artificial teeth out side the ridge Labial frenum too close to the crest of the ridge

REPAIR OF MIDLINE FRACTURE Assemble the two halves and fix them together using sticky wax Hold with wooden sticks or metal rods- block undercuts – separating medium – cast – dovetails- apply autopolymerizing acrylic resin N.B : midline fracture of mandibular arch requires repairing the labial flange

MATERIALS USED Autopolymerizing acrylic resin (lack of strength, porosity &discoloration) Heat cured acrylic resin (risk of warpage)

TOOTH REPAIR Select the tooth Prepare of lingual surface Fix the tooth using wax Plaster key (index) Eliminate the wax The use of autopolymerizing acrlic resin

FLANGE REPAIR *Flange,,,,, is present *Flange is absent

None separated fracture Separating medium Cast Replace the denture on cast Widen fracture line Add autopolymerizing acrylic resin

REPAIR OF POSTERIOR PALATAL SEAL Develop the desired thickness and extension of the seal ( green compound ) Separating medium & cast Remove the used material Add autopolymerizing acrylic resin