engleski

Evaluation of Marginal Bone Loss Around Short Mini-Dental Implants as Mandibular Overdenture Retainers: 1-Year Cohort Study

Objectives: To study clinical performance of 4 short mini- dental implants (MDIs) (6 or 8 mm long) for mandibular overdenture (OD) retention in patients with extremely atrophied alveolar ridge (interforaminal height < 10 mm) when standard length MDIs (≥10 mm) couldn't be inserted. Material and methods: The study consisted of 28 patients with extremly atrophied mandibular alveolar ridge. Each patient received 4 short MDIs (6 or 8 mm long, 2 or 2.5 mm wide) for mandibular overdenture (OD) retention. New mandibular ODs, reiforced with CoCr, were made. MDIs were early loaded using matrices with O-rings mounted in mandibular ODs. Clinical parameters, marginal bone loss (MBL), Modified Plaque Index (MPI) and Modified Bleeding Index (MBI) and prosthodontic complications were assessed after 1-year in function. Results: The MBL around short MDI was 0.26 ± 0.35 mm after first year in function. Only two MDIs broke during insertion and non of th MDI was loss in function (100% survival). Most of the patients had a very good oral hygiene (64, 28% had no plaque and 89, 28% patients without bleeding) and only one patient had MBL and MPI grade 3 on 1-year follow-up control. Conclusion: Within the limitations of this study, insertion of 4 short MDIs (6 or 8 mm long) in extremly atrophied mandibles (interforaminal height < 10 mm) for retention of mandibular ODs showed very good results in the first year of function. Acknowlegment: Croatian Science Foundation for funding project: 1218, Acronim: Mini dental implants

short mini dental implants ; extremely resorbed mandibular alveolar ridge ; complete overdenture

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