Table 1 The modified ABC classification for five surgical approaches to maxillary sinus augmentation.

From: SinusC-Net for automatic classification of surgical plans for maxillary sinus augmentation using a 3D distance-guided network

Class

Diagnostic criteria

Recommended procedure(s)

A

RBH greater than 10 mm

Implant placement

B

RBH 6–9 mm

Osteotome

B’

RBH 6–9 mm with horizontal or vertical defect

Osteotome + GBR

C

RBH 5 mm or less

Lateral wall sinus elevation

C’

RBH 5 mm or less with horizontal or vertical defect

Lateral wall sinus elevation + GBR

  1. RBH residual bone height, GBR guided bone regeneration.
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