Statement of the problem: The single implant mandibular overdenture (SIMO) is a cost effective, feasible alternative to the conventional 2 implant overdenture in the mandible. The clinical effectiveness and patient satisfaction have been studied in detail and a few systematic reviews have been done in this regard. The role of loading protocols on the longevity of the SIMO has not been the focus of any systematic review and neither has much attention been given to the type of attachment used. Most of the researchers have preferred to retrofit the overdenture using chair side relining techniques. The focus of this systematic review is to throw light on the effect of loading protocols and mode of attachment fixation on the success of the SIMO.
Methodology: Three electronic databases were utilized, namely PubMED, Ebsco and Science Direct. Additional hand searching was done to obtain maximum data. The search terms were Single And Midline Or Symphyseal And Implant And Overdenture. Literature published upto 25th june 2018 were included.. Inclusion and exclusion criteria were defined and only randomized controlled trials or longitudinal studies with at least 1 year follow up were pooled to extract relevant data.
Results: A total of 318 patients were treated with the SIMO with a mean age of 61 years. The systematic review table summarized the mean age and number, type of study and follow up period, the loading protocol and type of attachment, the mode of fixing the attachment, the implant success rate and the prosthetic events and/or failures. The results showed that immediate loading was not as predictable as delayed loading and denture base fractures could be minimized by using low profile attachments and employing laboratory relining to secure the attachment.
Impact Factor
2022: 6.012
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