After RCT for lower 7
it’s time for tooth preparation for indirect restoration
– Isolation
– IDS :- applying the adhesive agent before taking the impression, this will create a stable hybrid layer and prevents collagen fibrils degradation . (PASCAL MAGNE) . 2005
– RC :- protect the underlying hybrid layer and also let the adhesive resin to complete the full polymerization reaction. (Jayasooriya et al). 2003
-Non-retentive overlay protocol(Politano et al) . 2018
-tooth prepared with special Komet burs kit
-digital impression with Helios from Eighteeth
-Decoupling with time (DWT) : 90% of polymerization stresses are reduced within 5 minutes of dentin bond curing. After 30 minutes, 95% of the stress is gone. After 120 hours, will be completely stress-free. In this state, the dentin bonding strength get mature and become stronger twice the enamel bonding strength . Indirect restoration will give you these time (ALLEMAN)
– Cementation with heated AP-X composite
Initial situation
Access opening
Obturation with bio-c sealer
IDS + RC
E-max
Immediate result
X-Ray
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