Journal of Prosthodontics News
Digital Optimization of Teeth Setup in an Edentulous Patient with Partial Glossectomy
Now online in the Journal of Prosthodontics, a case report co-authored by ACP Treasurer and Fellow, Caroline T. Nguyen, DMD, MS, FACP, FRCD(C).
This clinical report describes the treatment of an edentulous patient with hemiglossectomy and heavily resorbed mandible who consulted for complete denture rehabilitation to improve masticatory function and speech. Complete removable dental prostheses were prescribed and the piezographic impression technique was used for tooth setup. This method allows respect for the neutral zone by positioning the teeth where the muscular function will not destabilize the prosthesis, and where the lingual forces will be neutralized by the labio-jugal forces.
Master casts, wax rims, and piezographic impression were scanned for digital prosthetic work. Two digital try-ins were performed: 1 with posterior crossbite and one without crossbite. Muscle activity and mandibular kinetics were performed for each try-in following the MAC2 protocol (six criteria): muscular tone, contraction synchrony, contraction efficiency, interocclusal rest distance, amplitude of mandibular movement, and velocity.
The piezographic impression and the muscular and kinetic comparisons offered the possibility of selecting the prosthesis presenting the best neuro-musculo–kinetic results and thus the best prosthesis for the patient on a functional level.
Carrière, M, Prudentos, J-B, Lecigne, A, Laran, A, Nguyen, CT, Destruhaut, F, et al. Digital optimization of teeth setup in an edentulous patient with partial glossectomy: A case report. J Prosthodont. 2023; 1– 8. https://doi.org/10.1111/jopr.13685
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