A Case of Mandibular Denture using a Custom-made Attachment for the Abnormal Movement by the Pseudoarthrosis of Mandible

Abstract

Patient: A 52-year-old male patient who underwent hemi-mandibulectomy due to cancer visited our hospital with chief complaint of masticatory dysfunction. As his oral condition, the alveolar bone of mandible between first molars was defected and remained teeth were second molars, that was reconstructed by the titanium plate and skin graft. To solve his chief complaint, dento-maxillary prosthesis with the retainers on second molars was fabricated by the conventional method. However, the both segments(left-right) of mandible showed an abnormal movement as a fulcrum of the mandibule midline. Then custom-made attachment was added on the prosthesis to correspond the abnormal movement. Although a fracture of the custom-made attachment and loss of the second molar were encountered due to periodontal disease in the period of observation, denture repair could solve these problems.
Discussion: In this case, we speculated that the negative influences of a muscle movement of mandibular segment and presence of a false joint on the center of mandible resulted in an abnormal mandiubular movement.
Conclusion: The applied custom-made attachment enabled the prosthesis to be crooked flexibly in accordance with the eccentric mandibular movement.