The long axis (a) was determined, followed by the alveolar bone axial inclination (b). To determine this axis, a line was drawn joining the palatal and buccal bone crest. Subsequently, the midpoint of this line was determined. In parallel to this line, another line was drawn intersecting the long axis of the tooth, 2 mm apical to the root apex. This line intersected the maxillary bone in the palatal and buccal surfaces and found the midpoint between these points. The alveolar bone axial inclination is a straight line crossing the two midpoints of the two lines. After setting the two axes, the angle (Ang) between them was measured in degrees.