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Clinical Paper Dental Implants| Volume 50, ISSUE 8, P1100-1106, August 2021

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Three-dimensional measurement of radiographic bone–implant contact lengths of zygomatic implants in zygomatic bone: a retrospective study of 66 implants in 28 patients

  • T.-Y. Huang
    Affiliations
    Department of Oral and Maxillofacial Surgery, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Xindian District, New Taipei City, Taiwan
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  • Y.-J. Hsia
    Affiliations
    Department of Oral and Maxillofacial Surgery, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Xindian District, New Taipei City, Taiwan
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  • M.-Y. Sung
    Affiliations
    Department of Dentistry, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Xindian District, New Taipei City, Taiwan
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  • Y.-T. Wu
    Affiliations
    Department of Dentistry, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Xindian District, New Taipei City, Taiwan
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  • P.-C. Hsu
    Correspondence
    Address: Po-Chih Hsu, Department of Oral and Maxillofacial Surgery, Taipei Tzu Chi Hospital, No. 289, Jianguo Road, Xindian District, New Taipei City, Taiwan. Tel: +886 2 22194719; Fax: +886 2 22194746
    Affiliations
    Department of Oral and Maxillofacial Surgery, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Xindian District, New Taipei City, Taiwan
    Search for articles by this author
Published:January 25, 2021DOI:https://doi.org/10.1016/j.ijom.2021.01.004

      Abstract

      Zygomatic implant treatment is widely applied for severe maxillary atrophy to help rehabilitate the maxillary dentition. This retrospective study was performed to evaluate the actual radiographic bone–implant contact (rBIC) lengths of zygomatic implants. The records of 28 patients who underwent zygomatic implant surgery and subsequent follow-up examinations between August 2013 and September 2018 in the Department of Oral and Maxillofacial Surgery, Taipei Tzu Chi Hospital were reviewed. The surgeries were performed by a single surgeon using the same treatment protocol. All patients had a computed tomography scan at 1 year after the surgery. Using three-dimensional imaging software, an investigator measured the rBIC lengths of 66 implants and documented their clinical status. The implant survival rate was 100%. The mean rBIC length was significantly longer in male patients than in female patients (20.80 ± 5.88 mm versus 17.79 ± 6.34 mm; P = 0.028). The mean rBIC length of double zygomatic implants was significantly longer when compared to that of single implants (21.11 ± 6.23 mm versus 17.75 ± 5.85 mm; P = 0.027). This article is novel in reporting the exact rBIC lengths of zygomatic implants in a clinical setting. The results showed that zygomatic implants are a viable treatment modality for full-mouth rehabilitation.

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