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    Evaluation of the clinical success of class I cavities prepared by an Er:YAG laser-5-year follow-up study
    (Springer London Ltd, 2015) Hamidi, Mehmet Mustafa; Ercan, Ertugrul; Dulgergil, Coruh Turksel; Colak, Hakan
    The purpose of this study was to evaluate, after 5 years, the clinical success of preparing class 1 composite resin restorations with an Er:YAG laser. Sixty-five teeth of 30 patients were included in the study, and an Er:YAG laser emitting at a wavelength of 2.94 mu m was used for the class I cavity preparations with not more than one third of the mesiodistal width of the occlusal surfaces of each tooth. All cavities were restored with a light-cured composite resin, following a single bond application. After the baseline examination, restorations were reevaluated by the same experienced clinician after 5 years, using the modified Ryge criteria. At the end of 5 years, 41 of the 65 restorations were evaluated in 22 patients and scored. With respect to marginal discoloration, anatomic form, color match, and surface texture, significant differences were found between baselines tested after 5 years. Clinical evaluation of postoperative sensitivity showed that 90.2 % were rated as alpha. All restorations evaluated in this study demonstrated acceptable clinical performance within the evaluation period based on the alpha and bravo ratings for clinically satisfactory restorations. Further evaluations are necessary for a better clinical performance analysis.
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    Geomedical assessment of an area having high-fluoride groundwater in southeastern Turkey
    (Springer, 2016) Yesilnacar, Mehmet Irfan; Yetis, Aysegul Demir; Dulgergil, Coruh Turksel; Kumral, Mustafa; Atasoy, Ayse Dilek; Dogan, Tuba Rastgeldi; Aydogdu, Murat
    The high-fluoride concentration in groundwater has been yet determined in two villages (Sarim and Karatas) of western Sanliurfa (Turkey) where it is the only source of drinking water. To assess medical and hydrogeological dimensions of this problem, principally including fluoride concentrations as well as electrical conductivity, temperature and pH values were measured in groundwater wells of 65 villages including these two villages on site and a dental examination was performed on 451 children. The fluoride concentrations in the groundwater of four villages determined as greater than 1.20 mg/L, causing dental fluorosis among children of these villages. Results revealed that dental fluorosis cases can develop even at low fluoride levels. Finally, the prepared geomedical map demonstrated that medical and hydrogeological evidences were compatible with each other.