Back to Access Cavities
MandibularOvoid
Mandibular Canine
Mandibular Canine - Axial View showing ovoid access cavity
Average Length25.6 mm
Root Development14 years
Universal #22, 27
FDI #33, 43
Access Cavity Design
ShapeOvoid
OrientationBuccolingual
Entry PointCenter of lingual surface
Canal Anatomy
Configurations
Single canal92-98%
Two canals (one root)5-18%
Two roots/canals<3%
Canal Positions
MCMain Canal
Ovoid at cervical, round at midroot
BBuccal Canal
Easier and straighter when 2 canals present
LLingual Canal
Shielded by lingual shelf
Clinical Tips
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Warning
Second longest tooth (25.6 mm) - may require 30mm instruments
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Technique
Extend access linguo-cervically to locate potential lingual canal
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Technique
Directional instrumentation needed due to ovoid canal cross-section