Dr. Ahmed Alwaidh is an internationally trained clinician with over 17 years of experience in advanced clinical dentistry. He holds a Bachelor of Dental Surgery from the University of Baghdad, the LDS qualification from the Royal College of Surgeons of England, and an MSc in Endodontics from King’s College London. He is registered with the UK General Dental Council, licensed by the Dubai Health Authority, and a member of the Iraqi Dental Association.
His clinical practice focuses on microscopic endodontics, complex retreatment cases, and microscopic-assisted dentistry, alongside restorative and aesthetic rehabilitation. Dr. Alwaidh has lectured in postgraduate endodontics and contributed clinical case reports highlighting retreatment strategies and precision-based endodontic techniques.
His professional interests include minimally invasive dentistry, interdisciplinary treatment planning, and improving clinical predictability through modern endodontic protocols. He is committed to advancing patient-centred care through education, clinical excellence, and evidence-based practice.
Successful endodontic treatment relies on effective chemo-mechanical preparation of the root canal system. While numerous nickel-titanium instrumentation systems are available today, understanding the biological objectives and mechanical principles of canal preparation remains essential for predictable outcomes.
This lecture will discuss the evolution of root canal preparation techniques and examine the key factors influencing shaping quality, including instrument design, metallurgy, motion kinematics, and irrigation dynamics. Contemporary rotary and reciprocating systems will be compared, and practical considerations such as glide path creation, apical enlargement, taper selection, and preservation of dentin will be explored.
By integrating scientific evidence with clinical experience and case demonstrations, the presentation aims to provide clinicians with a comprehensive framework for selecting and using modern instrumentation systems safely and efficiently.