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Calcimator

Root Fracture Risk Calculator

Fracture risk from remaining dentin thickness and loading.

Inputs

Results

Fracture risk score (0-100)

44

Risk category (1-3)2
Dentin deficit (mm)0
Cuspal coverage needed (0/1)1
Est. 5-year survival (%)72%
How to Use This Calculator
  1. Enter Remaining Dentin Thickness (mm) at the thinnest point.
  2. Input Final Canal Size (ISO) used for the apical preparation.
  3. Toggle Post Present if a post will be or is cemented.
  4. Select Occlusion Type (normal, bruxism, or parafunctional) and Tooth Type (anterior, premolar, molar).
  5. Review Fracture Risk Score (0-100) and Risk Category — high-risk cases warrant crown coverage and occlusal adjustment.
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