A 5‐year prospective randomized clinical trial on the influence of splinted and unsplinted oral implants retaining a mandibular overdenture: prosthetic aspects and patient satisfaction

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Abstract
Prosthetic outcome and patient satisfaction were evaluated in order to investigate whether there is a need or advantage to splint two implants in the mandible retaining a hinging overdenture. This study included 36 fully edentulous patients randomly divided into three groups according to the attachment system they received: magnets, ball attachments or straight bars (reference group). None of the implants failed during the whole observation period in any of the groups. After 5 years of observation, the Bar group presented the highest retention capacity and the least prosthetic complications but revealed more mucositis and gingival hyperplasia. Patient satisfaction rated similar for all groups although the Magnet group showed lower retention forces. All patients would repeat the same treatment even though the majority of the Magnet group would prefer a more retentive solution because of limited denture stability.

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