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Clinical Oral Investigations

, Volume 23, Issue 1, pp 381–389 | Cite as

Direct restoration of endodontically treated maxillary central incisors: post or no post at all?

  • Manja von Stein-LausnitzEmail author
  • M. Bruhnke
  • M. Rosentritt
  • G. Sterzenbach
  • K. Bitter
  • R. Frankenberger
  • M. Naumann
Original Article
  • 282 Downloads

Abstract

Objectives

The aim of this ex-vivo study was to evaluate the impact of cavity size and glass-fiber post (GFP) placement on the load capability of endodontically treated maxillary incisors directly restored with resin composite.

Materials and methods

Ninety-six extracted human maxillary central incisors were endodontically treated and distributed to four groups (n = 24): access cavity (A), access cavity and uni-proximal class III cavity (U), access cavity and bi-proximal class III cavity (B), and decoronated tooth (D). Specimens were restored with resin composite, and 12 specimen of each group received an adhesively placed glass-fiber post (P). Prior to linear loading, specimens were exposed to thermo-mechanical loading (TCML). Statistical analysis was performed using log-rank test after TCML, Kruskall-Wallis and Mann-Whitney U test to compare load capabilities (Fmax).

Results

Significantly more failures occurred in group D for specimens without GFP during TCML (p = 0.001). Fmax (mean (SD) in N was (A) 513 (124), (AP) 554 (201), (U) 438 (171), (UP) 537 (232) (B) 483 (219), (BP) 536 (281), D 143 (181), and DP 500 (331), and differed significantly among groups (p = 0.003). Pair-wise comparison revealed lower Fmax values for group D compared to all other groups (p < 0.034) except group DP.

Conclusions

Endodontically treated maxillary central incisors with cavity sizes up to bi-proximal class III may be successfully directly restored with resin composite. Post placement shows no additional effect except for decoronated endodontically treated incisors.

Clinical relevance

Endodontically treated incisors with access cavities to class III cavities can be successfully restored with resin composite. Post placement for decoronated ETT is recommended.

Keywords

Direct restoration Endodontic post Glass-fiber post Postendodontic treatment Resin composite 

Notes

Acknowledgements

The authors thank Dr. René Tunjan a lot for his very kind introduction into the embedding procedure.

Funding

The study is funded in part by the German Society of Prosthodontics and Biomaterials (DGPro e.V., Hannover, Germany) and Dentsply DeTrey, Konstanz, Germany.

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

Ethical approval

This article does not contain studies with animals or human participants.

Informed consent

Formal consent is not required for this kind of study.

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Copyright information

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

Authors and Affiliations

  1. 1.Department of Prosthodontics, Geriatric Dentistry and Craniomandibular DisordersCharité–Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of HealthBerlinGermany
  2. 2.Department of Prosthetic DentistryRegensburg University Medical CenterRegensburgGermany
  3. 3.Department of Operative and Preventive DentistryCharité–Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of HealthBerlinGermany
  4. 4.Department of Operative Dentistry and EndodonticsUniversity of MarburgMarburgGermany

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