Endodontic treatment for upper first molar with acute pulpitis + periapical periodontitis

Endodontic treatment for upper first molar with acute pulpitis + periapical periodontitis .
A reverse acute angle in the distobuccal canal was observed , one of the most important factors is the pre analysis of x ray that showed an angle that could compromise my preparation or lead to a separated instrument .

Usually i go for more stiff files , more aggressive in cutting , shorter time of preparation , but in this case i choose the super flexible TC-files (videya) that could be safer , more efficient , and respect the canal anatomy without alteration or transportation .
Access cavity and mechanical preparation was carried out on single visit , intracanal medicament for 10 days .
Second visit irrigation using EDTA , CHX , sonic activation , obturation CLC .