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Tytuł:
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Accuracy of cone-beam computed tomography is limited at implant sites with a thin buccal bone: A laboratory study.
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Autorzy:
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Domic D; Department of Periodontology, Faculty of Odontology, University of Malmö, Malmö, Sweden.; Division of Oral Surgery, University Clinic of Dentistry, Medical University of Vienna, Vienna, Austria.
Bertl K; Department of Periodontology, Faculty of Odontology, University of Malmö, Malmö, Sweden.; Division of Oral Surgery, University Clinic of Dentistry, Medical University of Vienna, Vienna, Austria.
Ahmad S; Department of Periodontology, Faculty of Odontology, University of Malmö, Malmö, Sweden.
Schropp L; Section of Oral Radiology, Department of Dentistry and Oral Health, Aarhus University, Aarhus, Denmark.
Hellén-Halme K; Department of Oral and Maxillofacial Radiology, Faculty of Odontology, University of Malmö, Malmö, Sweden.
Stavropoulos A; Department of Periodontology, Faculty of Odontology, University of Malmö, Malmö, Sweden.; Division of Conservative Dentistry and Periodontology, University Clinic of Dentistry, Medical University of Vienna, Vienna, Austria.; Division of Regenerative Dentistry and Periodontology, University Clinics of Dental Medicine (CUMD), University of Geneva, Geneva, Switzerland.
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Źródło:
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Journal of periodontology [J Periodontol] 2021 Apr; Vol. 92 (4), pp. 592-601. Date of Electronic Publication: 2020 Sep 16.
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Typ publikacji:
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Journal Article
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Język:
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English
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Imprint Name(s):
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Original Publication: [Chicago] American Academy of Periodontology.
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MeSH Terms:
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Alveolar Process*/diagnostic imaging
Dental Implants*
Animals ; Cone-Beam Computed Tomography ; Cross-Sectional Studies ; Laboratories ; Swine ; Titanium
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References:
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Contributed Indexing:
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Keywords: alveolar process; cone-beam computed tomography; dental implants; titanium; zirconium
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Substance Nomenclature:
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0 (Dental Implants)
D1JT611TNE (Titanium)
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Entry Date(s):
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Date Created: 20200827 Date Completed: 20210419 Latest Revision: 20210703
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Update Code:
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20240105
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PubMed Central ID:
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PMC8247288
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DOI:
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10.1002/JPER.20-0222
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PMID:
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32846005
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Background: To evaluate whether buccal bone thickness (BBT), implant diameter, and abutment/crown material influence the accuracy of cone-beam computed tomography (CBCT) to determine the buccal bone level at titanium implants.
Methods: Two implant beds (i.e., narrow and standard diameter) were prepared in each of 36 porcine bone blocks. The implant beds were positioned at a variable distance from the buccal bone surface; thus, resulting in three BBT groups (i.e., >0.5 to 1.0; >1.0 to 1.5; >1.5 to 2.0 mm). In half of the blocks, a buccal bone dehiscence of random extent ("depth") was created and implants were mounted with different abutment/crown material (i.e., titanium abutments with a metal-ceramic crown and zirconia abutments with an all-ceramic zirconia crown). The distance from the implant shoulder to the buccal bone crest was measured on cross-sectional CBCT images and compared with the direct measurements at the bone blocks.
Results: While abutment/crown material and implant diameter had no effect on the detection accuracy of the buccal bone level at dental implants in CBCT scans, BBT had a significant effect. Specifically, when BBT was ≤1.0 mm, a dehiscence was often diagnosed although not present, that is, the sensitivity was high (95.8%), but the specificity (12.5%) and the detection accuracy (54.2%) were low. Further, the average measurement error of the distance from the implant shoulder to the buccal bone crest was 1.6 mm.
Conclusions: Based on the present laboratory study, BBT has a major impact on the correct diagnosis of the buccal bone level at dental titanium implants in CBCT images; in cases where the buccal bone is ≤1 mm thick, detection of the buccal bone level is largely inaccurate.
(© 2020 The Authors. Journal of Periodontology published by Wiley Periodicals, Inc. on behalf of American Academy of Periodontology.)