Back to Access Cavities
MaxillaryOvoid
Maxillary Lateral Incisor
Maxillary Lateral Incisor - Axial View showing ovoid access cavity
Average Length22 mm
Root Development10 years
Universal #7, 10
FDI #12, 22
Access Cavity Design
ShapeOvoid
OrientationBuccopalatal
Entry PointPalatal surface, just above cingulum
DimensionsM-D: 1.13 mmB-L: 1.39 mm
Canal Anatomy
Configurations
Single canal100%
Canal Positions
MCMain Canal
Ovoid cervically, round at apex
Clinical Tips
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Warning
Usually has distopalatal curvature in apical third - careful technique needed
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Warning
Check for dens-in-dente on radiograph before access - most common in this tooth
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Tip
Root canal is wide in proportion to root - careful instrumentation
Anatomical Variations
Dens-in-dente (Dens Invaginatus)
Most common in lateral incisorsInvagination of enamel into the tooth - complex internal anatomy
Access Modification: May require modified access to address invagination