Buccolingual (BL) aspect measurements of right first molar, assessed in 2 different points, referred to tooth long axis: (1) A—5 mm coronal to the apices (4.99 mm from the apex; green line, the BL width is 6.3 mm; yellow line), (2) X- alveolar crest level (BL width is 9.02 mm; green line). CBCT para-axial cross section. B-buccal; L-lingual.