Evaluation of the Efficacy of Smear Layer Removal Using Different Irrigation Activation Methods during Root Canal Treatment: An In Vitro Study - Geonath Immanuel K; Preethi Anju; Sneha Sanap; Saicharan Gorre; Nada M Ibrahim; Mustafa H Alattas; Mazen F Alkahtany (The Journal of Contemporary Dental Practice, 2026)