Microleakage through cervically exposed dentinal tubules in root canal filled teeth pretreated with desensitizing agent

Abstract EN

Dentin permeability and microleakage are related together and provide a continuous, microscopic, bidirectional fluid filled route between the oral cavity and the pulp space This study investigates the effect of pretreatment of inner canal wall with ferric-oxalate (desensitizing agent) on the salivary recontamination occurring between the root canal wall and sealer through cervically exposed dentinal tubules.

Material and Methods: Forty extracted mandibular premolar teeth were chemomechaincally prepared then randomly divided into two main groups.

The inner canal wall of each tooth in the second group was pretreated with ferric oxalate, and then all the teeth were obturated.

A ring of 3 mm length at the cervical level of the teeth was subjected to root planning.

All specimens were coated except for the ring area subjected to root planning, that was treated with citric acid.

The specimens were exposed to natural saliva then pelikan ink.

Then cleared and liner dye penetration was measured.

Results: Linear dye penetration was measured and the results were statistically analyzed using T-test.

Conclusion: The treatment of the inner canal wall with ferric-oxalate significantly reduced the microleakage through the cervically exposed dentinal tubules.