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Computer aided manufacturing and design of fixed bridges restoring the lost dentition, soft tissue and the bone

Malara P., Dobrzański L. B.

Archives of Materials Science and Engineering

2016

Vol. 81, nr 2

68--75

Purpose: The aim of the paper is to present the methodology of computer aided designing and manufacturing of an all-ceramic multi-unit bridge restoring missing teeth and the lost soft and hard tissues of the oral cavity as a result of surgical treatment of oral tumor. Design/methodology/approach: The methodology of computer aided designing and manufacturing of the multi-unit all-ceramic bridge was presented on the basis of an actual clinical case of a patient who underwent the surgical treatment of myxoma of the oral cavity. All the steps of clinical and technical production of the bridge were described and illustrated. Findings: It is possible to use the CAD/CAM technology to design and manufacture all-ceramic multi-unit bridges restoring missing teeth and the lost soft and hard tissues of the oral cavity. The design of the bridge must be clinically validated using mock-ups and only then can be implemented for the CAM software. Practical implications: Thanks to the method of designing and manufacturing of multiunit all-ceramic bridges for patients with significant lost of the soft and hard tissues of the mouth it is possible to carry out a prosthetic rehabilitation of patients after trauma and tumor surgery. Originality/value: : The execution of extensive bridges with the maximum available height of about 25 mm requires a high technological rigor at the design and manufacture stage. To ensure longevity of the reconstruction, it is necessary to plan all the work while maintaining the maximum thickness of the substructure. It is desirable to provide minimum of 2 mm thick substructure and the surface of at least 20 mm2 or more in the cross-sections. At the same time, the structure of the bridge must be supported on the alveolar ridge to provide aesthetics and endurance.