Common errors
- Assuming a linear path from orifice to apex
- Missing the secondary loop on the straight-on film
- Over-instrumenting at the split-rejoin zone
- Single-cone obturation leaving voids
Canal Variants
Type 7 — DNA Canal
4K-CNT-T7
Canals that separate and rejoin multiple times — a genuine anatomical puzzle that demands methodical negotiation and systematic obturation of each segment.
Expert
Type VII
Complex Anatomy
Why this model
Its clinical value.
Type VII "DNA" anatomy is the canal that splits, rejoins, and splits again. The value of the model is anatomical literacy — students stop assuming a canal is linear.
Clinical context
How this model trains.
Training protocol
- CBCT mapping before treatment
- Segment-by-segment negotiation with #08
- Flexible small-taper shaping only
- Warm vertical compaction with careful down-pack
- Multiple post-op angles to document seal
Success criteria
- All segments negotiated
- Sealer flow visible across anatomy
- No perforation or strip at transition zones
Learning outcomes
What the trainee learns.
- Systematic multi-segment negotiation
- Working length per segment
- Complex canal obturation sequencing
Specifications
Technical details.
- SKU
- 4K-CNT-T7
- Category
- Canal Variants
- Printing
- 34μm SLA
- Manufactured in
- Cairo, Egypt
- Pricing
- Contact for institutional pricing
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