Fig. 2From: Dental implants and grafting success remain high despite large variations in maxillary sinus mucosal thickeningFigure illustrating the proposed mucosal thickening index. A ≤1 mm, indicating no thickening; B >1 mm but ≤2 mm, indicating minimal thickening; C >2 mm but ≤5 mm, indicating moderate thickening; D >5 mm, indicating severe thickeningBack to article page