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

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 and Funda Goker
Additional contact information
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
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

IJERPH, 2021, vol. 18, issue 11, 1-20

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.

Keywords: zygomatic implant; guided surgery; computer aided implantology; navigation; dynamic navigation; surgical guides; surgical templates; pterygoid implants; CAD/CAM; accuracy; guidance (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.mdpi.com/1660-4601/18/11/6142/pdf (application/pdf)
https://www.mdpi.com/1660-4601/18/11/6142/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jijerp:v:18:y:2021:i:11:p:6142-:d:570031

Access Statistics for this article

IJERPH is currently edited by Ms. Jenna Liu

More articles in IJERPH from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().