Читать книгу Fundamentals of Fixed Prosthodontics - James C. Kessler - Страница 126
ОглавлениеComplex Fixed Partial Dentures (One Tooth)
| Missing: Maxillary canine Abutments: Central incisor, lateral incisor, and first premolar Considerations: A single implant-supported MCR crown would be the restoration of choice here. Restore the occlusion to group function. Using the two premolars and the lateral incisor as abutments is not desirable because it places too heavy a burden on the smaller single abutment, the lateral incisor. Retainers: MCR crowns Pontic: Modified ridge lap or ovate MCR, depending on the faciolingual dimension of the ridge Abutment-pontic root ratio: 2.3 | |
| Missing: Maxillary canine Implant: 4.5 × 15 mm Considerations: A dental implant is the restoration of choice. Restoration: MCR over a custom abutment (UCLA, Atlantis, or preparable abutment) | |
| Missing: Mandibular canine Abutments: Central incisor, lateral incisor, and first premolar Considerations: An implant-supported MCR is the restoration of choice in the mandible as well. Use group function to restore the occlusion. If there has been extensive bone loss around the lateral incisor, or if it is tilted to produce a line of draw discrepancy, remove the lateral incisor and use both central incisors as abutments if a fixed partial denture is used. Fortunately, the need to replace this tooth is not common. Retainers: MCRs Pontic: Ovate MCR Abutment-pontic root ratio: 1.9 | |
| Missing: Mandibular canine Implant: 4.5 × 15 mm Considerations: A dental implant is the restoration of choice. Restoration: MCR over a custom abutment (UCLA, Atlantis, or preparable abutment) |
