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Clinical Oral Investigations

, Volume 23, Issue 3, pp 1373–1382 | Cite as

Changes in periapical status, quality of root fillings and estimated endodontic treatment need in a similar urban German population 20 years later

  • Thomas ConnertEmail author
  • M. Truckenmüller
  • A. ElAyouti
  • F. Eggmann
  • G. Krastl
  • C. Löst
  • R. Weiger
Original Article

Abstract

Objectives

The study aimed at assessing, as primary objective, the periapical status and quality of root fillings, and, as secondary objective, the endodontic treatment need of a German urban population in a cross-sectional study 20 years after the first one.

Materials and methods

Clinical and radiographic data of 353 patients were evaluated. Descriptive and regression analyses were performed and the endodontic treatment need was calculated. Results were compared with data from the year 1993.

Results

A total of 9269 teeth were examined (26.2 teeth per patient; 1993, 24.4), of which 337 teeth were root filled (3.6%; 1993, 2.7%). Prevalence of apical periodontitis in root-filled teeth was 34% (1993, 61%). Quality of root fillings was adequate in 117 cases (35%; 1993, 14%). Minimum endodontic treatment need was estimated with 1.6% (1993, 2.3%), including teeth with clinical symptoms. Considering symptomless teeth with apical periodontitis and poor quality of root filling, the treatment need was 2.9% (1993, 3.7%). Regression analysis identified quality of root filling as a significant factor for periapical health (p = 0.01, odds ratio 3.4×, 95% CI 1.9–6.3×), likewise the type of instrumentation. Teeth treated with rotary files had a significantly better outcome (p = 0.02, odds ratio 2.0×, 95% CI 1.1–3.7×).

Conclusions

Quality of root fillings and the periapical status have improved over the last 20 years in Germany. However, there is still a need for an increase in quality of root canal treatment.

Keywords

Periapical status Apical periodontitis Epidemiology Repeated cross-sectional study Endodontic treatment need Endodontics 

Notes

Acknowledgments

We would like to thank Carmen Buckley for the help with the manuscript.

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

Ethical approval

This article does not contain any studies with animals performed by any of the authors. Ethical approval was obtained by the local Research Ethics Committee (Nr. 412/2013 D). The study was performed in accordance with the ethical standards laid down in the 1964 Declaration of Helsinki and its later amendments.

Informed consent

Informed consent was obtained from all individual participants included in the study.

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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Department of Periodontology, Endodontology and Cariology, University Center for Dental MedicineUniversity of BaselBaselSwitzerland
  2. 2.Private practiceStuttgartGermany
  3. 3.Department of Operative Dentistry, Periodontology, Endodontology and Pediatric Dentistry, School of Dental MedicineEberhard-Karls UniversityTübingenGermany
  4. 4.Department of Operative Dentistry and PeriodontologyUniversity of WürzburgWürzburgGermany

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