Risk factors for failure in the management of cervical caries lesions

Clin Oral Investig. 2017 Jul;21(6):2123-2131. doi: 10.1007/s00784-016-2002-1. Epub 2016 Nov 10.


Objectives: The aim of this retrospective, non-interventional clinical study was to analyze factors influencing the survival of restorative treatments of active cervical (root) caries lesions (aCCLs) and the success of non-invasive treatment options of inactive cervical (root) caries lesions (iCCLs).

Material and methods: Records from patients who visited a single private practice regularly were searched for the presence of solely buccal CCLs. Data from 345 aCCLs and 232 iCCLs being detected at least 6 months before the last recall visit in 295 patients were recorded. Kaplan-Meier analyses were used to analyze time to failure in both groups. Cox proportional hazards models were used to evaluate the association between clinical factors and time until failure.

Results: Within 120 months, 20 aCCLs had received a second restorative follow-up treatment. For iCCLs, 35 lesions had to be restored within 120 months. Median survival/success time was 111 months for aCCLs (annual failure rate 1.7%) and 120 months for iCCLs (annual "restoration" rate 4.3%). In multivariate Cox regression, active and inactive CCLs being checked up more than twice a year showed significantly higher failure/restoration rates than CCLs being checked up less than twice a year (p < 0.001).

Conclusion: Low failure/restoration rates could be found for both treatment strategies for CCLs, and only the "number of check-ups per year" was significantly positively associated with failures.

Clinical relevance: Caries monitoring is a viable way to manage CCLs. However, individual check-up interval should be defined carefully, since higher rate of check-ups seems to lead to increased intervention rates in the management of CCLs. The study was registered in the German Clinical Trials Register (DRKS-ID: DRKS00010003).

Keywords: Clinical studies/trials; Geriatric dentistry; Preventive dentistry; Restorative dentistry; Risk factor; Root caries/resorption.

Publication types

  • Clinical Study

MeSH terms

  • Adult
  • Dental Restoration Failure*
  • Dental Restoration, Permanent / methods*
  • Female
  • Humans
  • Kaplan-Meier Estimate
  • Male
  • Middle Aged
  • Retrospective Studies
  • Risk Factors
  • Root Caries / therapy*