Purpose: The purpose of this document is to clarify the biomechanical principles involved when zygoma implants are placed under functional loads.
Methods: Two independent reviewers conducted electronic search of the literature from January 2000 to February 2023 describing the biomechanical principles involved using the zygoma implant for maxillary reconstruction. Articles describing the stresses within the zygoma implant, the maxillary bone and the zygoma bone under functional loads were included.
Results: The lack of maxillary boney support at the implant platform resulted in significant higher stress measured within the zygoma implant as well as the zygoma bone.
Conclusion: The maxilla is the primary support when zygoma implants are placed under functional loads. Quad-cortical stabilization of the zygoma implants and their cross-arch stabilization are recommended to reduce the degree of stress whenever possible.
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http://dx.doi.org/10.1186/s40729-023-00483-1 | DOI Listing |
J Craniomaxillofac Surg
December 2024
School of Medicine and Health Sciences, University of Barcelona, Barcelona, Spain; IDIBELL Institute, Barcelona, Spain.
Real-time surgical navigation systems (dynamic computer-aided surgery, d-CAIS) and static guided surgery (static computer-aided surgery, s-CAIS) have been shown to enhance the accuracy of zygomatic implant (ZI) placement. The objective of this systematic review was to evaluate and compare the accuracy and risk of complications associated with d-CAIS and s-CAIS in ZI placement. A systematic review of published studies involving more than 4 patients was conducted to assess and compare the accuracy of d-CAIS and s-CAIS in zygomatic implant placement.
View Article and Find Full Text PDFEur J Orthod
December 2024
Department of Dentistry, All India Institute of Medical Sciences, Basni Industrial Area Phase-2, Jodhpur- 342005, Rajasthan, India.
PeerJ
December 2024
Department of Oral and Maxillofacial Surgery, University Medical Center Groningen, Groningen, Netherlands.
Purpose: Placement of zygomatic implants in the most optimal prosthetic position is considered challenging due to limited bone mass of the zygoma, limited visibility, length of the drilling path and proximity to critical anatomical structures. Augmented reality (AR) navigation can eliminate some of the disadvantages of surgical guides and conventional surgical navigation, while potentially improving accuracy. In this human cadaver study, we evaluated a developed AR navigation approach for placement of zygomatic implants after total maxillectomy.
View Article and Find Full Text PDFJ Oral Implantol
December 2024
Advance Education in Implant Dentistry Department, Loma Linda University, Redlands, California.
This study aimed to compare the angular, platform, and apical deviation of zygoma implants placed with the aid of a dynamic navigation (DN) device compared with the implants placed freehand. Eight cadaver heads were used for the study. Preoperative cone beam computerized tomography (CBCT) scans were made for the heads, and an implant-planning software was used to plan zygoma implants bilaterally in each scanned head.
View Article and Find Full Text PDFJ Clin Med
November 2024
Cellular Signaling Laboratory, Anatomy Center, Department of Biomedical and Neuromotor Sciences (DIBINEM), University of Bologna, 40126 Bologna, Italy.
: The malar bone provides an anchorage point for zygomatic implants, avoiding invasive reconstructive surgeries in the fixed rehabilitation of fully edentulous and severely atrophic maxillae. The limited bone volume, however, requires precise implant placement to prevent complications related to nearby anatomical structures. This observational cross-sectional study aims to measure the malar and zygomatic arch bones and their distances from critical anatomical landmarks to guide surgeons in safe zygomatic implant placement.
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