My siren started to ring when I saw a pre-op pa radiograph like this one here. My main concerns were not to ledge the canal, maintain patency and avoid separating instrument at the apical curve in the mesial root. This was my strategy. After establishing a glide path with #8 file, I straightened the coronal third of the canal. Making sure that patency was maintained, I precurved all hand files and enlarged it to #20. Subsequently, the canal was shaped with Profile 0.06 taper to to #30.
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