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Bucco alveolar bone thickness of mandibular impacted third molars with different inclinations: a CBCT study

  • Anatomic Bases of Medical, Radiological and Surgical Techniques
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Abstract

Purpose

To compare the buccal alveolar bone thickness of mesioangulated mandibular impacted third molars (MITM) with buccal versus lingual inclination using cone-beam computed tomography (CBCT).

Methods

This retrospective cross-sectional study evaluated 69 individuals (39 women and 30 men) who presented a total of 101 mesioangulated MITM according to the Winter classification and in B position according to the Pell and Gregory classification. The average age was 22.99 ± 3.94 years. The superior, medial and inferior alveolar thickness regarding buccal (n = 44) or lingual (n = 57) mandibular third molar inclination were measured. T test or Mann–Whitney U test and finally, a multiple linear regression were applied (p < 0.05).

Results

The buccal alveolar bone thickness of mesioangulated mandibular impacted third molars was significantly greater in the group with lingual inclination compared to the group with buccal inclination, in the superior region (6.21 ± 3.27 vs. 4.85 ± 3.06; p = 0.036). The lingual inclination significantly influenced the buccal alveolar bone thickness in the middle region (p = 0.011).

Conclusions

The mesioangulated MITM in B position with lingual inclination have a greater thickness of the superior and medial buccal alveolar bone than the MITM with buccal inclination. These results should be considered during MITM diagnosis and surgical planning.

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Funding

This research not received any funding.

Author information

Authors and Affiliations

  1. Medico Surgical Department, Faculty of Dentistry, Universidad Nacional Mayor de San Marcos, Calle Germán Amézaga 375, Lima, Peru

    Livia Sonia Zambrano-De la Peña & Maria Eugenia Guerrero

  2. Department of Orthodontics, Bauru Dental School, University of São Paulo, Bauru, São Paulo, Brazil

    Aron Aliaga-Del Castillo

  3. Division of Oral and Maxillofacial Radiology, Universidad Nacional de Colombia, Bogotá, Colombia

    Yalil Augusto Rodríguez-Cárdenas

  4. Division of Orthodontics, Faculty of Dentistry, Universidad Nacional de Colombia, Bogotá, Colombia

    Gustavo Armando Ruiz-Mora

  5. Division of Oral and Maxillofacial Radiology, School of Dentistry, Universidad Científica del Sur, Lima, Perú

    Luis Ernesto Arriola-Guillén

  6. Division of Orthodontics, School of Dentistry, Universidad Científica del Sur, Lima, Perú

    Luis Ernesto Arriola-Guillén

Authors
  1. Livia Sonia Zambrano-De la Peña
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  2. Aron Aliaga-Del Castillo
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  5. Luis Ernesto Arriola-Guillén
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  6. Maria Eugenia Guerrero
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Contributions

LSZ-DP: designed the study, analyzed and interpreted data. AA-DC: worked on drafting the manuscript and revised it critically for important intellectual content. YAR-C and GAR-M: analyzed and interpreted data and drafted the manuscript. LEA-G: designed the study and collected the data and drafting the manuscript. MEG: revised the manuscript and approved the final version to be published. All authors read and approved the final manuscript.

Corresponding author

Correspondence to Maria Eugenia Guerrero.

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The authors declare that they have no conflict of interests.

Ethical approval

This retrospective study was approved by the Ethics in Research Committee of Científica del Sur University, Lima, Perú (N° 270-2018-POS8).

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Zambrano-De la Peña, L.S., Aliaga-Del Castillo, A., Rodríguez-Cárdenas, Y.A. et al. Bucco alveolar bone thickness of mandibular impacted third molars with different inclinations: a CBCT study. Surg Radiol Anat 42, 1051–1056 (2020). https://doi.org/10.1007/s00276-020-02447-1

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  • DOI: https://doi.org/10.1007/s00276-020-02447-1

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