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A Comparative Finite Element Analysis of ‘Hexa-Zygomatic’ Implants vs Conventional Quad Zygomatic Implants for The Rehabilitation of Bilateral Maxillectomy Defects

Author(s): Abhay Datarkar, Priyanka Relan, Arwa Pardiwala, Prashant Pandilwar, Eitan Mijiritsky.

Restoration of bilateral maxillectomy defects is inherently challenging. Zygomatic implants are one of the non-bone grafting solutions for restoration of such defects which require minimum armamentarium and are widely available. The Quad Zygomatic Implants have a long track record in maxillectomy defects secondary to cancer ablative surgeries. In the current scenario, they are being used in COVID associated mucormycosis maxillectomy defects. Since there is a paucity in literature on the use of zygomatic implants in the above-mentioned malady, we have used finite element analysis to assess the longevity of the Quad Zygomatic Implants concept and the newer Hexa Zygomatic Implants concept for these types of cases. The finite element analysis showed similar results for both the concepts on simulation which leads to the conclusion whereas both are viable treatment modalities. The Quad Zygomatic Implants concept is the more economically favourable and practical solution. As this a finite element analysis study, clinical based studies with long follow-up may shed light on a more conclusive clinical outcomes.

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