Implant Size Selection Calculator
Diameter and length from bone volume proxy.
Inputs
Results
Recommended diameter (mm)
4
Recommended length (mm)10
Bone density class (D1-D4)3
Crown-to-implant ratio1
Bone adequate (0/1)1
Implant surface area (mm²)126
How to Use This Calculator
- Enter Available bone width (mm), Available bone height (mm), and Hounsfield units (HU).
- Set Position (1-4).
- Review the Recommended diameter (mm) result.
- Use Recommended length (mm) and Bone density class (D1-D4) to inform your decision.
How the result changes with Available bone width (mm)
| Available bone width (mm) | Recommended diameter (mm) |
|---|---|
| 4.2 | 3 |
| 7.2 | 4 |
| 11 | 4 |
| 14 | 4 |
What each input means
- Available bone width (mm)
- Buccolingual bone width at the crest.
- Available bone height (mm)
- Crestal bone height above vital structures.
- Hounsfield units (HU)
- CBCT bone density at the implant site.
- Position (1-4)
- 1 = anterior, 2 = premolar, 3 = molar mandible, 4 = molar maxilla.
What each result means
- Recommended diameter (mm)
- Optimal implant diameter for the available bone.
- Recommended length (mm)
- Optimal implant length with safety margin.
- Bone density class (D1-D4)
- Misch classification from Hounsfield units.
- Crown-to-implant ratio
- Estimated crown height to implant length ratio.
- Bone adequate (0/1)
- 1 = sufficient bone without augmentation.
- Implant surface area (mm²)
- Approximate bone-implant contact area.
How this is calculated
Worked example, using the default values
- Identify Input Parameters4 parametersAvailable bone width (mm) = 7, Available bone height (mm) = 12, Hounsfield units (HU) = 500, Position (1-4) = 2 = 4 input(s) provided
- Calculate Recommended diameterRecommended diameter4 = 4
- Calculate Recommended lengthRecommended length10 = 10
- Calculate Bone density class3 = 3
Engine last updated . Checked against 3 independently-derived tests — how we verify calculators.
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