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A Novel Guided Zygomatic and Pterygoid Implant Surgery System: A Human Cadaver Study on Accuracy

Author

Listed:
  • Francesco Grecchi

    (IRCCS (Istituto di Ricovero e Cura a Carattere Scientifico) Orthopedic Institute Galeazzi, Via Riccardo Galeazzi, 4, 20161 Milano, Italy)

  • Luigi V. Stefanelli

    (Private Practice, Viale Leonardo Da Vinci 256, 00145 Rome, Italy)

  • Fabrizio Grivetto

    (Maggiore della Carità di Novara, Università degli studi del Piemonte Orientale “Amedeo Avogadro”, Reparto di Chirurgia Maxillo-Facciale, C.so Mazzini 18, 28100 Novara, Italy)

  • Emma Grecchi

    (Private Practice, Via G. Boccaccio 34, 20123 Milano, Italy)

  • Rami Siev

    (Private Practice, Tel Aviv Basel St 46, Tel Aviv 6100000, Israel)

  • Ziv Mazor

    (Private Practice, Tel Aviv Basel St 46, Tel Aviv 6100000, Israel)

  • Massimo Del Fabbro

    (IRCCS (Istituto di Ricovero e Cura a Carattere Scientifico) Orthopedic Institute Galeazzi, Via Riccardo Galeazzi, 4, 20161 Milano, Italy
    Department of Biomedical, Surgical and Dental Sciences, Università degli Studi di Milano, 20122 Milano, Italy)

  • Nicola Pranno

    (Department of Oral and Maxillo Facial Science, Sapienza University of Rome, Via Caserta 6, 00161 Rome, Italy)

  • Alessio Franchina

    (Private Practice, Via Legione Gallieno 44, 36100 Vicenza, Italy)

  • Vittorio Di Lucia

    (Private Practice, Viale Leonardo Da Vinci 256, 00145 Rome, Italy)

  • Francesca De Angelis

    (Department of Oral and Maxillo Facial Science, Sapienza University of Rome, Via Caserta 6, 00161 Rome, Italy)

  • Funda Goker

    (Department of Biomedical, Surgical and Dental Sciences, Università degli Studi di Milano, 20122 Milano, Italy)

Abstract

The aim of this human cadaver study was to assess the accuracy of zygomatic/pterygoid implant placement using custom-made bone-supported laser sintered titanium templates. For this purpose, pre-surgical planning was done on computed tomography scans of each cadaver. Surgical guides were printed using direct metal laser sintering technology. Four zygomatic and two pterygoid implants were inserted in each case using the guided protocol and related tools. Post-operative computed tomography (CT) scans were obtained to evaluate deviations between the planned and inserted implants. Accuracy was measured by overlaying the real position in the post-operative CT on the virtual presurgical placement of the implant in a CT image. Descriptive and bivariate analyses of the data were performed. As a result, a total of 40 zygomatic and 20 pterygoid implants were inserted in 10 cadavers. The mean deviations between the planned and the placed zygomatic and pterygoid implants were respectively (mean ± SD): 1.69° ± 1.12° and 4.15° ± 3.53° for angular deviation. Linear distance deviations: 0.93 mm ± 1.23 mm and 1.35 mm ± 1.45 mm at platform depth, 1.35 mm ± 0.78 mm and 1.81 mm ± 1.47 mm at apical plane, 1.07 mm ± 1.47 mm and 1.22 mm ± 1.44 mm for apical depth. In conclusion, the surgical guide system showed accuracy for all the variables studied and allowed acceptable and accurate implant placement regardless of the case complexity.

Suggested Citation

  • Francesco Grecchi & Luigi V. Stefanelli & Fabrizio Grivetto & Emma Grecchi & Rami Siev & Ziv Mazor & Massimo Del Fabbro & Nicola Pranno & Alessio Franchina & Vittorio Di Lucia & Francesca De Angelis &, 2021. "A Novel Guided Zygomatic and Pterygoid Implant Surgery System: A Human Cadaver Study on Accuracy," IJERPH, MDPI, vol. 18(11), pages 1-20, June.
    • Handle: RePEc:gam:jijerp:v:18:y:2021:i:11:p:6142-:d:570031
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    References listed on IDEAS

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    1. Gerardo Pellegrino & Pierantonio Bellini & Pier Francesco Cavallini & Agnese Ferri & Andrea Zacchino & Valerio Taraschi & Claudio Marchetti & Ugo Consolo, 2020. "Dynamic Navigation in Dental Implantology: The Influence of Surgical Experience on Implant Placement Accuracy and Operating Time. An in Vitro Study," IJERPH, MDPI, vol. 17(6), pages 1-9, March.
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