Implant survival/success and peri-implant outcomes of titanium-zirconium mini implants for mandibular overdentures: Results from a 1-year randomized clinical trial.

Curado, Thalita Fernandes Fleury; Silva, Jésio Rodrigues; Nascimento, Lays Noleto; Leles, José Luiz Rodrigues; McKenna, Gerald; Schimmel, Martin; Leles, Cláudio Rodrigues (2023). Implant survival/success and peri-implant outcomes of titanium-zirconium mini implants for mandibular overdentures: Results from a 1-year randomized clinical trial. Clinical oral implants research, 34(8), pp. 769-782. Wiley 10.1111/clr.14102

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OBJECTIVE

To report the 1-year implant survival/success and peri-implant outcomes of mandibular overdentures retained by four titanium-zirconium mini implants (Straumann® Mini Implant System), and to assess how surgery and loading protocols influence these outcomes.

MATERIALS AND METHODS

A 2 × 2 factorial randomized clinical trial (RCT) tested the combined effects of two loading protocols (immediate or delayed) and two surgical approaches (flapless or flapped) on the success/survival of the mini implants, and peri-implant parameters (plaque, bleeding, sulcus depth, gingival position, and marginal bone loss). Outcomes were assessed up to 1-year after loading, and generalized estimating equations (GEEs) were used to analyze longitudinal and within-patient clustered data.

RESULTS

Two hundred and ninety-six implants were placed in 74 patients. The implant survival/success rates after 1 year were 100%, and no major biological complications were observed. After 1-year, descriptive data suggest no noticeable changes in plaque scores, whilst a reduction in bleeding scores at the 6-month and 1-year follow-ups compared to baseline. Good longitudinal stability was observed for the probing depth and gingival margin height measures. Overall mean marginal bone loss was 0.68 (±0.68) mm after 3 months and 0.89 (±0.75) mm after 1-year. The flapless protocol showed better results on soft tissue stability and health but a slightly higher risk for marginal bone loss.

CONCLUSION

The results of this RCT suggest that mandibular overdentures retained by this novel mini implant system represent a safe and predictable treatment option as confirmed by implant survival/success and peri-implant outcomes, even when flapless surgery and immediate loading protocols are adopted.

Item Type:

Journal Article (Original Article)

Division/Institute:

04 Faculty of Medicine > School of Dental Medicine > Department of Reconstructive Dentistry and Gerodontology

UniBE Contributor:

Schimmel, Martin

Subjects:

600 Technology > 610 Medicine & health

ISSN:

1600-0501

Publisher:

Wiley

Language:

English

Submitter:

Pubmed Import

Date Deposited:

31 May 2023 15:46

Last Modified:

09 Aug 2023 00:14

Publisher DOI:

10.1111/clr.14102

PubMed ID:

37254798

Uncontrolled Keywords:

clinical assessment clinical research clinical trials dental implant diagnosis edentulous patient

BORIS DOI:

10.48350/183071

URI:

https://boris.unibe.ch/id/eprint/183071

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