When scouting the apical one-third, after coronal two-thirds pre-enlargement, if a new and straight 15 file can gently 'slide' and passively 'glide' to length, then rotary instruments will generally follow this confirmed and reproducible glide path.

In this Just-In-Time segment, topics include:

• Root canal system anatomy
• Appreciating viscous chelators
• Sequencing the preparation
• Negotiating with hand files
• Choosing manual vs. rotary