Initial view:
Patient suffering from hypersensitivity related to canine
Scaling first then isolation
After remove older restoration
Unfinished margin around the compsite leading to leakage and calculus
Scaling again
Selective etching
Bonding
1- remove the excess bond by brush not air to brevet formation Oxygen inheritor layer
2- light cure : slow start light curing to prevent rapid polymerisation that could stress then hybrid layer
Gap formation is the most prominent in the first 10 S of light cure
Slow start reduced stress to HL due to ordered polymer chine growth
20 S ON LOW MOOD
3- The last and most important step is
Resin coating 0.5 m on all dentine
And waiting 5 minutes for
Decouple with time. This protocol states that polymerization shrinkage stress to the developing dentin bond of the hybrid layer should be minimized for a certain period of time (ie 5 to 30 minutes) by keeping initial increments to a minimum thickness
Before finishing and polishing
After finishing
After finishing canine and first premolar
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