Effect Of Simultaneous Working Length Control During Root Canal Preparation Versus Electronic Apex Locator On Postoperative Pain in Teeth With Symptomatic Irreversible Pulpitis (a Randomized Clinical Trial) is a NA clinical asset sponsored by Cairo University in Postoperative Pain. SEO and diligence focus: simultaneous working length control using E-CONNECT S, separate length determination and root canal preparation using Root ZX apex locator., endpoint relevance, enrollment feasibility, competitive positioning, readout timing and IP durability.