Surgical removal of poly-ether-ether-ketone-derived basal type implants: A case report
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After Branemark et al.1 reported that titanium can support a prosthesis by being osseointegrated into the alveolar bone, titanium has undoubtedly been the most used implant material. Even the use of zirconium implants—the second-most commonly used after titanium—has been limited.2 However, there have been some reports about the disadvantages of titanium implants. Researchers continue to seek alternative materials to titanium because of factors that include titanium hypersensitivity; the possibility of local inflammation3–7; titanium elastic module differing from bone as a result of the transmission of force directly to the bone; and esthetic concerns, especially in the collar because of titanium’s dark color.8,9 Recently, poly-ether-ether-ketone (PEEK) materials that are biocompatible and have a similar elastic module to bone (3.6 Gpa) have been used in orthopedics10,11 and traumatology.12,13 For this reason, it has been proposed that implants made from PEEK may be used in the treatment of edentulism. Additionally, animal studies support the clinical use of PEEK-derived implants.14 To date, not only the implant materials but also different dental implant structures have been tried. Although bone grafts, mental nerve displacement, and maxillary sinus lifting procedures have been used with acceptable results in the treatment of severe bone resorption and insufficient bone volume, different treatment approaches are still being sought due to the second surgery area, higher complication risk, and potential patient refusal. Apart from the frequently used cylindrical implants, blade, pin-shaped, transmandibular and subperiosteal implants have also been used in the treatment of total or partial edentulism. Basal type implants, used as an alternative treatment option for severely atrophic alveolar bone, are among the preferred methods, although existing short- and long-term studies are insufficient.15 This case report presents the surgical removal of PEEKderived basal type dental implants due to failure of osseointegration.