Clinical and radiographic evaluation of implant-supported single-unit crowns with cantilever extension in posterior areas: A retrospective study with a follow-up of at least 10 years.

Schmid, Eric; Roccuzzo, Andrea; Morandini, Michele; Ramseier, Christoph A.; Sculean, Anton; Salvi, Giovanni E. (2021). Clinical and radiographic evaluation of implant-supported single-unit crowns with cantilever extension in posterior areas: A retrospective study with a follow-up of at least 10 years. Clinical implant dentistry and related research, 23(2), pp. 189-196. Wiley 10.1111/cid.12973

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BACKGROUND

Implant-supported restorations with cantilever extension may display high rates of biological and technical complications.

PURPOSE

To report the outcomes of single-unit crowns with cantilever extension (SCCs).

MATERIALS AND METHODS

Patients with SCCs were reevaluated after ≥10 years of loading. Radiographic marginal bone levels (mBLs) at baseline (ie, delivery of SCCs) and follow-up were calculated and compared between implant surfaces adjacent to and distant from the cantilever extension. Implant survival and success rates were calculated.

RESULTS

Twenty-one patients with 25 SCs supported by 25 implants were reevaluated after a mean of 13.6 ± 3.8 years (range: 10-19 years). No implants were lost. The mean overall mBLs changed from 0.99 mm ± 0.95 at baseline to 0.95 mm ± 0.99 at follow-up (p = 0.853). The mean pocket probing depths changed from 3.39 mm ± 0.62 at baseline to 3.34 mm ± 0.54 at follow-up (p = 0.635). Loss of retention occurred 3× in 2 patients (14.3%). At follow-up, peri-implant health was diagnosed in 10 (48%) and peri-implant mucositis in 11 (52%) patients, respectively.

CONCLUSIONS

Within the limitations of the present study, the use of implant-supported SCs with cantilever extension in posterior areas represents a reliable long-term treatment option with a 100% implant survival rate and minimal marginal bone level changes.

Item Type:

Journal Article (Original Article)

Division/Institute:

04 Faculty of Medicine > School of Dental Medicine > Department of Periodontology
04 Faculty of Medicine > School of Dental Medicine

UniBE Contributor:

Schmid, Eric, Roccuzzo, Andrea, Morandini, Michele Ettore Rodolfo, Ramseier, Christoph Andreas, Sculean, Anton, Salvi, Giovanni Edoardo

Subjects:

600 Technology > 610 Medicine & health

ISSN:

1708-8208

Publisher:

Wiley

Language:

English

Submitter:

Doris Burri

Date Deposited:

26 Jan 2022 13:45

Last Modified:

17 Jan 2023 13:54

Publisher DOI:

10.1111/cid.12973

PubMed ID:

33448601

Uncontrolled Keywords:

cantilever extension crestal bone loss implant-supported crown long-term survival peri-implantitis radiographs

BORIS DOI:

10.48350/163704

URI:

https://boris.unibe.ch/id/eprint/163704

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