Browsing by Author "Ozmeric, Ahmet"

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    Histomorphometric and Biomechanical Evaluation of The Osseointegration Around Micro- And Nano-Level Boron-Nitride Coated Titanium Dental Implants
    (2022) Ozmeric, Nurdan; Cakal, Gaye Ozgur; Gokmenoglu, Ceren; Ozmeric, Ahmet; Oduncuoglu, Bahar Fusun; Hacaloglu, Tugce; Kaftanoglu, Bilgin; 35724866; AAH-5405-2020
    Introduction: Titanium dental implants has been coated with different materials such as polymers and biomi-metic agents, bone morphogenetic protein, calcium phosphate to enhance surface properties of the titanium implants for osseointegration. The aim of this study was to evaluate the bone tissue healing around Boron Nitride-coated (BN-coated) titanium implants histomorphometrically and biomechanically and also observe the effect of different coating thicknesses on osseointegration. Materials and methods: BN was coated on dental titanium implants with two different coating thicknesses by using RF magnetron sputtering system. Totally fifty-four implants were inserted into the tibias' of 12 New Zealand rabbits bilaterally under general anesthesia. All animals were sacrificed after 4-weeks. Bone-implant contact (BIC) and new bone area/total area ratios (BATA) were calculated. Also, the removal torque (RT) test was performed. Results: The highest new bone area in the medullary cavity was around the nano-BN-coated surface with 15.70%. In micro-BN-coated surface and control group, this ratio was determined as 10.48% and 8.23%, respectively. The BIC ratios in upper-side of implants and cortical-associated BIC ratios in lower-side were found significantly higher in control and micro-BN-coated group than nano-BN-coated group (p > 0.05). Sim-ilar BIC values were observed between control and micro-BN-coated groups (p > 0.05). BATA values did not show statistically significant differences between all three groups (p > 0.05). The RT values measured in all groups were found comparable and no statistically significant differences were found (p > 0.05). Conclusion: No inflammatory reaction developed around any implant. Relatively more new bone formation around nano-BN-coated titanium implants indicates the promising osseoinductive effect of BN coating. BN-coated implants showed similar biomechanical and histomorphometrical outcomes to that of the conven-tional titanium implants through a 4-week evaluation period. (c) 2022 Elsevier Masson SAS. All rights reserved.
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    IS FUNCTIONAL OUTCOME BETTER AFTER ARTHROPLASTY FOR TROCHANTERIC FRACTURES IN OLDER ADULTS?
    (2018) Ozturk, Alper; Iltar, Serkan; Alemdaroglu, Kadir Bahadir; Dincel, Veysel Ercan; Ozmeric, Ahmet; Gokgoz, Burak; 0000-0003-2986-4083; 29977135; P-8036-2018
    Objectives: This article evaluated functional recovery and mortality after surgery to repair trochanteric fracture with regard to treatment technique through one year of follow-up. Method: Eighty consecutive patients with trochanteric fractures were divided into two groups according to treatment technique (osteosynthesis and arthroplasty). We evaluated patient data including age, sex, time to surgery, total hospital stay, transfusion volume, and functional status according to FIM (Functional Independence Measure) scores. Scores for FIM were assessed three times: prior to fracture, six months after surgery, and one year after surgery. Results: Patients who received osteosynthesis had shorter hospital stays than arthroplasty patients. The arthroplasty group had significantly higher functional independence six months after surgery, while no difference was detected one year after surgery. Patient age, transfusion volume, and FIM scores were detected as significant predictors of mortality. Conclusion: Trochanteric fractures lead to unavoidable functional loss, although this can be reduced in the short term by treating with arthroplasty instead of osteosynthesis. Age, transfusion and functional situation predict one-year mortality for patients with trochanteric fractures. The patient's functional situation must be considered when choosing treatment for trochanteric fractures in order to reduce patient morbidity.