4K Dental Models
4K-CRV-DC
90° Curved Premolar
90° Curved Premolar · 4K-CRV-90
Extreme 90-degree curvature demands maximum instrument flexibility and controlled glide path creation to avoid transportation or fracture.
Advanced90° CurveGlide Path
Prices are not published — quoting depends on quantity and anatomy level.
Why this case matters
A true 90° curve is the outer limit of what NiTi systems can safely negotiate. Training on it builds respect for cyclic fatigue and surgical patience.
Training outcomes
- Controlled glide path in extreme curves
- Flexible NiTi system selection
- Transportation and fracture prevention
Common mistakes this model helps you avoid
- Entering rotary before glide path is established
- Reusing the same rotary file beyond 3 curves
- Skipping lubricant replenishment between files
- Forcing the file past tactile resistance
Suggested training protocol
- Straight-line coronal access to reduce stress
- Glide path to #15 with hand files
- Rotary in pecking motion, no engagement below the curve
- Discard rotary after this single canal
- Radiographic confirmation at MAF
What a successful exercise looks like
- Curvature preserved on final radiograph
- No apical transportation
- No file fracture
Pair it with
Curved Canals
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