Abstract
Background: The purpose of this case report is to describe a case of full arch rehabilitation in the maxilla and mandible using fixed detachable BioHPP frameworks veneered with prefabricated veneers in the presence of one-piece implants. Methods and findings: A 63-year-old male patient presented with a maxillary acrylic resin fixed restoration supported on six implants and a mandibular implant retained overdenture on two one-piece implants. Five implants were placed in the mandible in addition to the existing two one-piece implants using CAD/CAM surgical guides. Steps for prosthetic construction of the final full arch BioHPP restorations were completed. The mandibular BioHPP framework was relieved during construction to accommodate the one-piece implants. Cement was applied to fill the space in the framework above the one-piece implants. Conclusion: Full arch screw-retained restorations can be fabricated in the presence of one-piece implants without sectioning of the abutment part to avoid patient discomfort and heat generation. The low modulus of elasticity of BioHPP along with prefabricated PMMA veneers provided a major advantage over other materials by dampening the occlusal forces and reducing debonding rates.
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