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A maxillary implant supported overdenture on angulated implants with limited interocclusal space

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A maxillary implant supported overdenture on angulated implants with limited interocclusal space


Diagnosis is critical in obtaining a predictable outcome. Failure to diagnose and treatment plan appropriately can yield unsatisfactory results for both the patient and the clinician. Several factors contribute to the selection of treatment of the edentulous patient: anatomy, esthetics, phonetics, available interocclusal space, neuromuscular function, cost, patient’s expectations and compliance.

The treatment options for the edentulous patient range from conventional complete dentures to implant supported/retained fixed/removable prostheses. Advantages of implant supported overdentures include: facial scaffolding, dental esthetics, ease in reconciling arch discrepancies, improved hygiene access, latitude in positioning of implants, initial cost savings, ease of repair of prosthesis.

Reported minimum vertical space requirements for overdentures supported by individual attachments range between 8-10mm and 12-14mm for bar retained overdentures. The implant survival rate and patients’ satisfaction are independent of the attachment system. However, from a maintenance standpoint, a bar has been recommended when restoring divergent implants of more than 10 degrees.

This poster presentation illustrates the prosthodontic rehabilitation of a complete edentulous patient with implant supported overdentures. A new locator system, composed of multiple layers of titanium nitride and titanium carbon nitride, was used to compensate for the divergence of the implants and the limited interocclusal space, minimizing the cost of treatment and facilitating future redesign in case of implant failures.

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