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The prevalence of root resorption of maxillary incisors caused by impacted maxillary canines

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Abstract

Objectives

The aim of this study was to evaluate the prevalence of root resorption of maxillary incisors caused by impacted maxillary canines using low-dose dental computed tomography and to gain additional knowledge of the underlying aetiology and the progression of root resorption.

Materials and methods

A total of 440 patients (mean age, 24.7 years) with 557 impacted maxillary canines were examined regarding their location and the occurrence of root resorption of maxillary incisors.

Results

The frequency of root resorption was 2 % of central and 7.7 % of lateral maxillary incisors. The location of the 557 impacted canines within the dental arch was palatal in 67.5 %, buccal in 15.4 % and central in 17.1 %. No significant differences could be shown with respect to the width and the shape of the dental follicle of the impacted maxillary canines and the presence of root resorption of incisors. The presence of root resorption of central (p < 0.0001) and lateral (p < 0.023) maxillary incisors was significantly correlated with an existing contact relationship of the impacted maxillary canines.

Conclusions

Our investigation confirms the theory of prior reports comprising a much larger patient population, hypothesising that the dental follicle of impacted maxillary canines does not cause resorption of adjacent maxillary incisors per se.

Clinical relevance

Root resorption of maxillary incisors is correlated with effects of contact of the impacted maxillary canines, and these findings should be considered in treatment planning. Our findings are consistent with other reports and may develop new treatment approaches for the treatment of this sequela.

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Abbreviations

2D:

Two dimensional

3D:

Three dimensional

CT:

Computed tomography

CBCT:

Cone beam computed tomography

MRI:

Magnetic resonance imaging

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Acknowledgements

The authors would like to thank Mag. Walter Kunstel, Dr. Emil Florin Mamut for their support and Univ. Prof. Mag. Dr. Martina Mittlböck for her contribution in statistical analyses.

Conflict of interest

The authors declare that they have no conflict of interest.

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Authors and Affiliations

  1. Department of Oral Surgery, Bernhard Gottlieb University Clinic of Dentistry, Medical University of Vienna, Sensengasse 2a, 1090, Vienna, Austria

    Georg D. Strbac, Georg Watzek & Thomas Bernhart

  2. Department of Orthodontics, Bernhard Gottlieb University Clinic of Dentistry, Medical University of Vienna, Sensengasse 2a, 1090, Vienna, Austria

    Andrea Foltin & Hans-Peter Bantleon

  3. Department of Radiology, Bernhard Gottlieb University Clinic of Dentistry, Medical University of Vienna, Sensengasse 2a, 1090, Vienna, Austria

    André Gahleitner

Authors
  1. Georg D. Strbac
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  2. Andrea Foltin
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  3. André Gahleitner
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  4. Hans-Peter Bantleon
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  5. Georg Watzek
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  6. Thomas Bernhart
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Correspondence to Georg D. Strbac.

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Strbac, G.D., Foltin, A., Gahleitner, A. et al. The prevalence of root resorption of maxillary incisors caused by impacted maxillary canines. Clin Oral Invest 17, 553–564 (2013). https://doi.org/10.1007/s00784-012-0738-9

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  • DOI: https://doi.org/10.1007/s00784-012-0738-9

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