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    Öğe
    Evaluation of Trabecular Structure Using Fractal Analysis in Patients Taking Proton Inhibitors
    (Galenos Publ House, 2022) Ozel, Selale; Okumus, Ozlem; Yurdabakan, Zeliha Zuhal
    Objective: The aim of this study was to evaluate the changes in the trabecular bone structure in patients using proton pump inhibitors (PPI) by performing measurements with fractal analysis, mandibular cortical width (MCW) and panoramic mandibular index (PMI) on panoramic radiographs. Materials and Methods: This study consists of 46 patients (20 males and 26 females) using PPI drugs regularly for at least 1 year and systemically healthy 46 persons (20 males, 26 females) as the control group. Fractal analysis was performed in five regions: the mandibular angle (ROI1), posterior mandible (ROI2), interdental area between apical of the second premolar and the first molar (ROI3), maxillary tuber region (ROI4), anterior mandible (ROI5). PMI and MCW as an indicative of osteoporosis, were measured on the panoramic radiographs. Results: For re-evaluated measurements, interobserver and intraobserver agreements were found to be 0.985 and 0.987, respectively. ROI2-4 (1.732, 1.334, 1.333; respectively) were significantly lower in PPI users, whereas, there was no significant in ROI1 (1.605) and ROI5 (1.694). The values MCW and PMI were not statistically significant in PPI users. Conclusion: Posterior region of the mandible, maxillary tuberosity and interdental region had lower trabecular microstructures in PPI users. The results of this study show that patients using PPI at least one year should be considered as regarding osteoporotic changes during dental treatment.
  • [ X ]
    Öğe
    Tooth coronal index and a new staging system for dental age estimation in southern Turkish population
    (Taylor & Francis Ltd, 2023) Ozel, Selale; Yanik, Deniz
    Dental age indicators should be evaluated in different populations. The aim of the study was to evaluate the accuracy of the estimated age results of tooth coronal index (TCI) and to develop a new staging system using panoramic radiography for the southern Turkish population. The study group consisted of panoramic radiographs of 1000 individuals aged 11-77 years. The study group was divided into four subgroups according to age of patients: Group 1 (11-18 years of age), Group 2 (18-29 years), Group 3 (30-50 years), Group 4 (51-77 years). The mandibular first molar was measured. TCI and a new staging system were assessed in the southern Turkish population by two observers. The novel model includes six new parameters. Multiple regression models, intraclass correlation coefficient and Durbin-Watson analysis were used. The estimation error of TCI and the novel model were 14.25 and 11.04, respectively. The parameters of the novel model were more powerful than TCI's. There was no significant difference in sex. For both methods, the estimated age in Group 3 (between 30-50 years) provides the highest accuracy in all age groups. The results showed that the novel age estimation model is more reliable in the southern Turkish population.