| In this case, the assistant may need to move to the patient's right to position the HVE inlet lingually and to retract the patient's tongue with a mouth mirror. |
| Lingually, these cusps are flat or slightly concave from apex to base, while their labial sides are convex along their height and in cross section. |
| The upper postcanines have a tall principal cusp that is flanked by a smaller, slightly lingually displaced cusp mesially and distally. |
| It appears as a small bilateral papule with a distinctive location at the lingually attached gingiva, apical to the mandibular canine. |
| Access to the mesial furcations is best from the lingual surface because the furcation entrance is located lingually and not directly in the midline. |
| A complete furcation closure was obtained lingually. |
