Patient: 66-year-old man. Chief complaint: his maxillary complete denture has fractured down the midline for the third time in a year. History: healthy. Findings: the denture opposes a complete natural mandibular dentition with heavy wear facets. Previous repairs used autopolymerizing resin. There is a deep labial frenum notch, and the occlusion shows heavy anterior contact. Which management is most appropriate?