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Retrospective assessment of dental implant-related perforations of relevant anatomical structures and inadequate spacing between implants/teeth using cone-beam computed tomography

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Abstract

Objectives

To assess the prevalence of dental implant-related perforations of relevant anatomical structures and inadequate spacing between the implant and the adjacent tooth or implant, and their association with anatomical location, implant dimension, thread exposure, and presence of graft, using cone beam computed tomography (CBCT).

Materials and methods

CBCT scans of patients with implants were retrospectively assessed regarding the presence of implant-related perforation of adjacent anatomical structures, and inadequate mesial and distal spacing between the implant and the adjacent tooth/implant (i.e., < 1 mm or < 3 mm, respectively). Implants were classified according to anatomical location, dimensions, thread exposure, and the presence of graft (i.e., bone graft or bone substitutes). Prevalence of perforations and inadequate spacing was compared among the different implant classifications (Chi-squared test). Significance level was set at 5%.

Results

A total of 1109 implants were assessed, out of which 369 (33.3%) presented perforation of adjacent structures. Prevalence of perforations in the maxilla (43.5%) was higher than in the mandible (11.3%). Inadequate spacing was found in 18.2% of the mesial and distal measurements, which was more prevalent in the maxilla (p < 0.001). Implants perforating adjacent structures or placed with inadequate spacing presented higher prevalence of thread exposure (p < 0.001). No significant difference was found between the presence of perforations or inadequate spacing and presence of graft (p > 0.05).

Conclusions

Implant-related perforations of relevant anatomical structures and inadequate spacing between the implant and the adjacent tooth/implant are relatively prevalent and more common in the maxilla. Both are associated with threads exposure.

Clinical relevance

Information on dental implant-related perforations and inadequate spacing can assist dental surgeons in pre-surgical planning.

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Funding

This study was financed in part by the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior-Brasil (CAPES)-Finance Code 001.

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Authors and Affiliations

  1. Department of Oral Diagnosis, Division of Oral Radiology, Piracicaba Dental School, University of Campinas (UNICAMP), P.O. BOX 52, Av. Limeira, 901, Piracicaba, SP, 13414-903, Brazil

    Hugo Gaêta-Araujo, Nicolly Oliveira-Santos & Matheus Lima Oliveira

  2. Post-gradaute Program in Oral Rehabilitation, School of Dentistry of Ribeirao Preto, University of São Paulo (USP), Av. do Cafe, s/n, Ribeirao Preto, SP, 14040-904, Brazil

    Arthur Xavier Maseti Mancini & Christiano Oliveira-Santos

  3. Department of Stomatology, Public Oral Health and Forensic Dentistry, Division of Oral Radiology, School of Dentistry of Ribeirao Preto, University of Sao Paulo (USP), Av. do Cafe, s/n, Ribeirao Preto, SP, 14040-904, Brazil

    Christiano Oliveira-Santos

Authors
  1. Hugo Gaêta-Araujo
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  2. Nicolly Oliveira-Santos
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  3. Arthur Xavier Maseti Mancini
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  4. Matheus Lima Oliveira
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  5. Christiano Oliveira-Santos
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Corresponding author

Correspondence to Hugo Gaêta-Araujo.

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The authors declare that they have no conflict of interest.

Ethical approval

This study was carried out after local Institutional Review Board approval (protocol no. 91544518.3.0000.5418).

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Gaêta-Araujo, H., Oliveira-Santos, N., Mancini, A.X.M. et al. Retrospective assessment of dental implant-related perforations of relevant anatomical structures and inadequate spacing between implants/teeth using cone-beam computed tomography. Clin Oral Invest 24, 3281–3288 (2020). https://doi.org/10.1007/s00784-020-03205-8

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  • DOI: https://doi.org/10.1007/s00784-020-03205-8

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