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    Biomimetic dental implant production using selective laser powder bed fusion melting: In-vitro results
    (Elsevier, 2024) Önder, M. Ercüment; Çulhaoğlu, Ahmet; Özgül, Özkan; Tekin, Umut; Atil, Fethi; Taze, Cem; Yasa, Evren
    Instead of a textured surface with irregular pore size and distribution as in conventional dental implants, the use of lattice structures with regular geometric structure and controlled pore size produced by selective laser powder bed fusion melting (LPDF) technique will provide more predictable and successful results regarding osseointe- gration and mechanics. In this study, biomimetic dental implants with 2 different pore designs were fabricated by LPDF technique and compared with conventional dental implants in terms of surface characterization and resistance to biomechanical forces. Finite element analysis, scanning electron microscopy, computed micro to- mography scanning, ISO 14801 tests and detork tests were used for the comparison. The tested biomimetic implants were found to be as durable as conventional implants in terms of mechanical strength and detork values. They were also found to be 40-60% more advantageous than conventional dental implants with respect to surface area and volume. As a result, it was concluded that biomimetic dental implants with sufficient me- chanical strength and complex surface geometries can be made as designed without changing the reliable base material and can be produced using a different manufacturing method.
  • Küçük Resim
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    Long-term results of arthrocentesis in degenerative temporomandibular disorders
    (Mosby-Elsevier, 2009) Önder, M. Ercüment; Tüz, Hakan H.; Koçyiğit, Doruk; Kişnişçi, Reha S.
    Objectives. Long-term efficacy of arthrocentesis was investigated in patients with degenerative temporomandibular disorder (TMD) in this clinical study. Study design. Twenty-two joints of 15 patients with degenerative TMD were included as the study group, and 16 joints of 10 patients served as the control group. Arthrocentesis procedures in upper joint spaces were performed. The study group patients' mean follow-up period was 36.7 +/- 18.7 months, whereas the control group were kept for an average 9.9 +/- 2.8 months. Results were statistically compared using 1-way repeated analysis of variance and t test. Results. Pretreatment maximal interincisal opening increased significantly from 33.6 +/- 6.0 mm to 37.8 +/- 6.0 mm in the study group. Pretreatment pain and crepitus scores decreased significantly from 71.0 +/- 6.6 to 27.0 +/- 16 and 0.73 +/- 0.4 to 0.6 +/- 0.5, respectively, in the study group. Conclusions. Arthrocentesis was found to be a useful method for the treatment of degenerative TMDs, and the outcomes of treatment provide long-term cure for degenerative temporomandibular joints. (Oral Surg Oral Med Oral Pathol Oral Radiol Endod 2009; 107: e1-e5)