Common errors
- 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
Curved Canals
90° Curved Premolar
4K-CRV-90
Extreme 90-degree curvature demands maximum instrument flexibility and controlled glide path creation to avoid transportation or fracture.
Advanced
90° Curve
Glide Path
Why this model
Its clinical value.
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.
Clinical context
How this model trains.
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
Success criteria
- Curvature preserved on final radiograph
- No apical transportation
- No file fracture
Learning outcomes
What the trainee learns.
- Controlled glide path in extreme curves
- Flexible NiTi system selection
- Transportation and fracture prevention
Specifications
Technical details.
- SKU
- 4K-CRV-90
- Category
- Curved Canals
- Printing
- 34μm SLA
- Manufactured in
- Cairo, Egypt
- Pricing
- Contact for institutional pricing
Pair with
Models in the same category.
4K-CRV-DC
Double Curved Premolar
Two sequential curvatures require strategic instrument sequencing, multi-angl...
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4K-CRV-SS
S-Shaped Canal Premolar
The S-curve tests conceptual understanding before manual skills. Requires pre...
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4K-CRV-HK
Hook-Shaped Canal Premolar
The apical hook challenges tactile recognition, micro-anatomy respect, and ap...
View details →
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