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    Is there a relationship between chronic periodontitis and erectile dysfunction
    (The Journal of Sexual Medicine, 2013) Oğuz, Fatih; Eltaş, Abubekir; Beytur, Ali; Akdemir, Ender; Güneş, Ali
    Introduction. Chronic periodontitis (CP) is characterized with inflammation of the gingival tissues, which causes endothelial dysfunction in different organs. Aim. In this study, we investigated the association of CP with the erectile dysfunction (ED). Methods. The study group included 80 male patients with ED and 82 male patients without ED (control), aged between 30 and 40 years. The International Index of Erectile Function (IIEF) questionnaire was used to assess male sexual function, particularly the presence or absence of ED. Main Outcome Measures. The patients in the study and control groups were statistically compared according to their plaque index (PI), bleeding on probing (BoP), probing depth (PD), and clinical attachment level (CAL). Results. In the non-ED and the ED groups, the mean age was 35.7 4.8 and 34.9 4.9 years, respectively. Patients’ characteristics including body mass index, household income, and education status were similar in both groups (P > 0.05). Nineteen patients (23%) had severe CP in the non-ED group; 42 patients (53%) had severe CP in the ED group. Logistic regression analysis showed a significantly high association between ED and the severity of CP (odds ratio: 3.29, 95% confidence interval: 1.36–9.55, P < 0.01). The mean values of PI, BoP, and the percentages of sites with PD >4 mm and sites with CAL >4 mm were significantly higher in the ED group than in the control group (P < 0.05). The mean values of PD and CAL were not significantly different in the two groups (P > 0.05). The decayed, missing, filled teeth scores were also significantly higher in the ED group than in the non-ED group (P < 0.05). Conclusion. Our results have suggested that CP had a high association with ED in young adults at 30–40 years. We think that it will be of benefit to consider periodontal disease as a causative clinical condition of ED in such patients.
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    Numerical analysis of the effect of implant geometry to stress distributions of the three different commercial dental implant system
    (Cumhuriyet University Faculty of Dentistry, 2015) Topkaya, Tolga; Solmaz, Murat Yavuz; Dündar, Serkan; Eltaş, Abubekir
    Objectives: The success of dental implants is related to the quality, quantity of local bones, implant design and surgical technique. Implant diameter and length are accepted as key factors. Present work focuses to investigate the effect of titanium implant geometry to stress distributions in implant system. Materials and Methods: For this purpose three different implant models which are currently being used in clinical cases constructed by using ANSYS Workbench 12.1. The stress distributions on components of implant system under static loadings were analyzed for all models. Results: The maximum stress values that occurred in all components happen in the case of loading in which the Nucleoss T-4 (Nucleoss, Turkiye) implant is used, but the occurred lowest stress values happen in the case of Fi loading in which Nobel Active (Nobel Biocare, Zurich, Switzerland) implant is used. In all models, the maximum tensions have occurred in the neck region of the implants. Conclusions: The crestal bone loss in the neck region of the implants reduced the long-term survival rate of implants.The length and the size of the implant are the two important factors in the stress distribution.