Two narrow-diameter titanium-zirconium implants with stud attachments tied to highly satisfactory outcome mandible: Study

Results: The Kaplan–Meier survival rates were 100% for mandibular and 68.0% (SE ± 10.9%) for maxillary implants at 36 months (p = .008). Six maxillary implants failed after loading; no mandibular implants were lost. Five implants failed due to loss of osseointegration. One implant fractured. The mean marginal bone level changes around the analyzed implants (n = 28, 9 patients) were −0.71 ± 0.82 mm in the mandible and −2.08 ± 1.52 mm in the maxilla at the 36-month follow-up. The difference in marginal bone level changes between the maxilla and mandible was significant (p = .019) at the 12- and 36-month follow-ups. Two narrow-diameter titanium-zirconium implants with stud attachments showed a highly satisfactory outcome in the mandible. The maxillary implants showed a high failure rate and significantly more bone loss over time than the mandibular implants. The minimal concept of two implants and an overdenture should be limited to the edentulous mandible.

Reference:

Kern, J.-S., Salin, E., Elvers, D., Rittich, A., Tuna, T., Hölzle, F., & Wolfart, S. (2024). Maxillary and mandibular overdentures retained by two unsplinted narrow-diameter titanium-zirconium implants – A clinical pilot study. Clinical Oral Implants Research, 00, 1–13. https://doi.org/10.1111/clr.14303