Complication and failure rates in patients treated for chronic periodontitis and restored with single crowns on teeth and/or implants

Schmidlin, Kurt; Schnell, Natascha; Steiner, Stefanie; Salvi, Giovanni E; Pjetursson, Bjarni; Matuliene, Giedre; Zwahlen, Marcel; Brägger, Urs; Lang, Niklaus P (2010). Complication and failure rates in patients treated for chronic periodontitis and restored with single crowns on teeth and/or implants. Clinical oral implants research, 21(5), pp. 550-557. Oxford: Wiley-Blackwell 10.1111/j.1600-0501.2009.01907.x

[img] Text
Schmidlin ClinOralImplRes 2010.pdf - Published Version
Restricted to registered users only
Available under License Publisher holds Copyright.

Download (166kB) | Request a copy

Objectives: To assess the biological and technical complication rates of single crowns on vital teeth (SC-V), endodontically treated teeth without post and core (SC-E), with a cast post and core (SC-PC) and on implants (SC-I). Material and methods: From 392 patients with chronic periodontitis treated and documented by graduate students during the period from 1978 to 2002, 199 were reexamined during 2005 for this retrospective cohort study, and 64 of these patients were treated with SCs. Statistical analysis included Kaplan–Meier survival functions and event rates per 100 years of object-time. Poisson regression was used to compare the four groups of crowns with respect to the incidence rate ratio of failures, and failures and complications combined over 10 years and the entire observation period. Results: Forty-one (64%) female and 23 (36%) male patients participated in the reexamination. At the time of seating the crowns, the mean patient age was 46.8 (range 24–66.3) years. One hundred and sixty-eight single unit crowns were incorporated. Their mean follow-up time was 11.8 (range 0.8–26.4) years. During the time of observation, 22 biological and 11 technical complications occurred; 19 SC were lost. The chance for SC-V (56) to remain free of any failure or complication was 89.3% (95% confidence interval [CI] 76.1–95.4) after 10 years, 85.8% (95% CI 66–94.5) for SC-E (34), 75.9% for SC-PC (39), (95% CI 58.8–86.7) and 66.2% (95% CI 45.1–80.7) for SC-I (39). Over 10 years, 95% of SC-I remained free of failure and demonstrated a cumulative incidence of failure or complication of 34%. Compared with SC-E, SC-I were 3.5 times more likely to yield failures or complications and SC-PC failed 1.7 times more frequently than did SC-E. SC-V had the lowest rate of failures or complications over the 10 years. Conclusions: While SCs on vital teeth have the best prognosis, those on endodontically treated teeth have a slightly poorer prognosis over 10 years. Crowns on teeth with post and cores and implant-supported SCs displayed the highest incidence of failures and complications.

Item Type:

Journal Article (Original Article)

Division/Institute:

04 Faculty of Medicine > Pre-clinic Human Medicine > Institute of Social and Preventive Medicine
04 Faculty of Medicine > School of Dental Medicine > Department of Periodontology
04 Faculty of Medicine > School of Dental Medicine > Division of Fixed Prosthodontics (discontinued)

UniBE Contributor:

Schmidlin, Kurt; Salvi, Giovanni; Matuliene, Giedre; Zwahlen, Marcel and Brägger, Urs

ISSN:

0905-7161

Publisher:

Wiley-Blackwell

Language:

English

Submitter:

Eveline Carmen Schuler

Date Deposited:

04 Oct 2013 14:08

Last Modified:

11 Sep 2017 14:13

Publisher DOI:

10.1111/j.1600-0501.2009.01907.x

PubMed ID:

20443806

Web of Science ID:

000276467600013

BORIS DOI:

10.7892/boris.462

URI:

https://boris.unibe.ch/id/eprint/462 (FactScience: 199466)

Actions (login required)

Edit item Edit item
Provide Feedback