Maxillary implant-supported Overdentures Opposed by (Partial) Natural Dentitions: A 5-Year Prospective Case Series Study

Abstract

Purpose

To assess the 5-year treatment outcome of maxillary implant-retained overdentures opposed by natural antagonistic teeth.

Methods

50 consecutive patients received maxillary overdentures supported by six dental implants. Implants were placed in the anterior region, if enough bone was present (n=25 patients) Implant were placed in the posterior region if implant placement in in the anterior region was not possible (n=25 patients). Variables assessed included survival of implants, condition of hard and soft peri-implant tissues, and patients' satisfaction.

Results

Five-year implant survival rate was 97.0% and 99.3% and mean radiographic bone loss was 0.23 mm and 0.69 mm in the anterior and posterior group, respectively. Median scores for plaque, calculus, gingiva, bleeding, and mean scores for pocket probing depth were low and stayed low. Patients' satisfaction after treatment was high in both groups.

Conclusions

Within the limits of this 5-year study, it is concluded that six dental implants (placed in the anterior or posterior region) connected with a bar and opposed to natural antagonistic teeth result in acceptable results for clinical parameters; and good outcomes for marginal bone level changes and patient satisfaction.

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