Dr. Robert Berkenmeier

“This case was done twice by another lab. They did a lingual bar with an akers at #20 and an I-bar at #27. This approach did not work as the path of insertion, due to the anterior flaring of #22-27, but the distal incline of #20 can not be made in a way to engage undercuts, so, using the same frame, they removed buccal clasping on both #20 and #27 and redid the case with Valplast retentive features. This one too was so loose, that the patient could never really get a sense of posterior occlusion and simply stopped wearing the lower. Swing-lock may be the only way to achieve stability, unless of course we prep and crown teeth, something neither I nor the patient want to do.”
- Dr. Berkenmeier