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International Journal of Implant Dentistry

Table 3 Formula for the CBD

From: Peri-implant bone changes in immediate and non-immediate root-analog stepped implants—a matched comparative prospective study up to 10 years

Implant diameter and length

Formula for the calculation of the CBD

(CBD = coronal bone defect)

(DD = defect depth)

3.8 × 13 mm

CBD = DD + 5 mm

3.8 × 15 mm

CBD = DD + 7 mm

All other diameters

CBD = DD + 3.2 mm

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