engleski

Marginal bone loss in short mini-dental implants as complete mandibular overdenture retainers: 1- year cohort study.

Purpose/Aim: To study clinical performance of 4 short mini-dental implants (MDIs) (6 or 8 mm long) for complete mandibular overdenture (OD) retention in patients with extremely atrophied alveolar ridges (interforaminal height < 10 mm). Materials and Methods: The study included 28 patients with extremely atrophied mandibular alveolar ridges. Each patient received 4 short MDIs (6 or 8 mm long, 2 or 2.5 mm wide). New mandibular ODs were reinforced with CoCr framework. MDIs were early loaded using matrices with O-rings mounted in mandibular ODs. Clinical and radiological parameters: marginal bone loss (MBL), Modified Plaque Index (MPI), Modified Bleeding Index (MBI) and prosthodontic complications were assessed after 1-year in function. Results: Mean MBL in short MDIs was 0.26 ± 0.35 mm after the first year. Only two MDIs broke during insertion (surgical complication) and none of the MDI was lost in function (100% survival and success). Most of the patients had very good oral hygiene (64, 28% had no plaque and 89, 28% patients was without bleeding) and only one patient was scored 3 for the MPI and MBI, respectively at the 1-year follow-up control examination. One O-ring was lost and changed. Conclusions: Within the limitations of this study, insertion of 4 short MDIs in extremely atrophied mandibles (interforaminal height < 10 mm) retaining complete mandibular ODs showed very good results in the first year of function. Acknowledgment: Croatian Science Foundation for funding project: 1218

mini dental implants ; complete mandibular overdenture ; marginal bone loss

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