4K Dental Models
4K-CNT-T2
Type 7 — DNA Canal
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.
ExpertType VIIComplex Anatomy
Prices are not published — quoting depends on quantity and anatomy level.
Why this case matters
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.
Training outcomes
- Systematic multi-segment negotiation
- Working length per segment
- Complex canal obturation sequencing
Common mistakes this model helps you avoid
- 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
Suggested 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
What a successful exercise looks like
- All segments negotiated
- Sealer flow visible across anatomy
- No perforation or strip at transition zones
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