Chewing efficiency and radiographic outcomes of (PEKK) framework for full-arch mandibular implant-supported fixed dental prostheses with All-on-four treatment concept.

Elsherbini, Rana Misbah; Mahanna, Fatma Fathe; Abdelsameaa, Sally Elsayed; Altonbary, Gilan Y; Kamal Emera, Radwa Mohsen

doi:10.21608/asdj.2024.313111.1452

Chewing efficiency and radiographic outcomes of (PEKK) framework for full-arch mandibular implant-supported fixed dental prostheses with All-on-four treatment concept.

Document Type : Original articles

Authors

¹ Assistant lecturer, Removable Prosthodontics Department, Faculty of Dentistry, Delta University for Science and Technology. Mansoura. Egypt.

² Associate Professor of Prosthodontics, Removable Prosthodontics Department, Faculty of Dentistry, Mansoura University. Mansoura. Egypt.

³ Associate Professor, Oral and maxillofacial surgery Department, Faculty of Dentistry, Mansoura University. Mansoura. Egypt.

⁴ Associate Professor, Removable Prosthodontics Department, Faculty of Dentistry, Mansoura University. Mansoura. Egypt

⁵ Professor, Department of Removable Prosthodontics, University of Mansoura, Faculty of Dentistry, Mansoura University. Mansoura. Egypt.

10.21608/asdj.2024.313111.1452

Abstract

Aim: Novel materials called polymers are employed in implant-supported prostheses. The purpose of this study was to evaluate polyetherketoneketone (PEKK) as a prosthetic framework material for fixed prostheses supported by implants in the mandible.
Materials and Methods: Four mandibular implants were placed in each of the sixteen totally edentulous patients, in accordance with the all-on-4 concept. Final repair; PMMA crowns and a screw-retained prosthesis with a PEKK framework were provided. After delivery, chewing efficiency (UF) with different number of chewing strokes was assessed at 6months(T6) 12 months (T12) and 18 months (T18), variations in marginal bone height were periodically observed at the same time intervals. SPSS software version 22 was used to analyze the data.
Results: For different chewing strokes, UF significantly decreased with advance of time. For 5, 20, and 50 strokes. There was a significant difference in UF between T6, and T18. There was a significant difference in vertical bone loss between implant positions at T6 (p=.032), T12 (p=.032), and T18 (p=.001) At all observations, posterior implants recorded significantly higher vertical bone loss than anterior implants
Conclusion: PEKK Framework showed improved chewing efficiency and low marginal bone loss after 18 months follow-up. PEKK polymer is suggested to be used as a framework material for full arch implant-supported prosthesis.

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