OPERATIVE- FRACTURED OR DISLODGED RESTORATION

Question 1

Clinical photo shown: Both 36, 37 have amalgam restorations

a. Common cause of partial fractured/ dislodged restoration (4)

Answer 1

Restorations may be bulk fractured/partially or completely lost due to:

 Heavy occlusal loading – inadequate occlusal assessment before restoring the tooth

 Poor cavity design leading to weakened, thin-section restorations

 Poor bonding technique/contamination leading to an adhesive bond failure and lack of retention

 Inadequate placement procedures (condensation technique/curing) causing intrinsic material structural weaknesses (e.g. voids, ‘soggy bottom’ in resin composites)

Question 2

a. With reference to Fig, 2, provide tx options for the fractured molar (4)

Answer 2

 Direct restoration with resin composite

 CMC
 Half coverage crown
 No treatment