Replacing old defective amalgam filling with lithium disilicate overlay
Old amalgam removed
Unsupported enamel removed
Hypocalssified enamel that extend buccally removed
Caries removal by using CDD
Overlay preparation that extends into the buccal surface (vonlay or veneerlay prep.)
IDS with G2 bond
RC with universal flowable composite from GC
Cementation with heated composite
Initially, large amalgam on two cavities in upper first molar, sensitive to cold and sweet
Starting amalgam removal and the hypocalssified enamel on the buccal surface also removed, the remaining enamel cusps are weak anb if direct composite done on this situation they may break in unfavourable fracture mode in the future
All weak cusps and unsupported enamel removed
Final cavity design, no hypocalssified enamel, no soft caries, no unsupported enamel , IDS with G2 bond ,RC with flowable composite
In cementation day, isolation with rubberdam then sandblast the biobase
Cementation with heated composite
Immediate result
Buccal extension of the indirect restoration
Immediate after rubberdam removal, occlusal view
Look to the buccal extension of the lithium disilicate overlay (veneerlay or vonlay )
Pre-operative x-ray
Final x ray , look to the fitness
