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Öğe Degree of conversion of luting cements under fiber-reinforced composite resins(University of Dicle, 2016) Turkaslan S.S.; Deger Y.The mechanical properties and clinical performance of cements are affected by their degree of conversion; inadequate polymerization may lead to failures. This study evaluated the polymerization proportion of a dual-cure luting cement beneath two different fiber-reinforced composite restorations of various thicknesses utilizing a degree of conversion (DC) technique. Two types of glass fiber (GF); Everstick (Stick Tec, Turku, Finland) and Vectris Frame (Ivoclar, Vivadent Schaan, Liechtenstein) were used to prepare laminate veneer simulations. The polymerization course of the composite resin luting cement (Rely X ARC/3M-ESPE) was investigated using Fourier-transformed infrared spectroscopy (FT-IR) to evaluate the quantity of remaining carbon-carbon double bonds in the specimen beneath two types of fiber-reinforced composite restorations of three thicknesses. The polymerization proportion of Rely X ARC cement beneath Everstick-reinforced composite restorations was similar to the composite-only group (p>0.005) at 0.5-, 1-, and 1.5-mm thicknesses after the light-curing period (40 sec) utilizing the DC technique. The polymerization proportion was decreased when the thickness (1 and 1.5 mm) of Vectris Frame was increased (p<0.005). The polymerization process was continued using the auto-polymerization mechanism after 1020 sec, but the 1.5-mm Vectris Frame-reinforced composite group exhibited the lowest polymerization proportion of all groups (p<0.005). In conclusion, an increased thickness of fiber-reinforced composite resin may negatively affect the polymerization proportion of the underlying resin cement, depending on the fiber material used.Öğe Dental practitioner performance when incorporating attachments in implant-retained overdentures with unsplinted abutments(University of Dicle, 2015) Turkaslan S.S.; Deger Y.; Akan E.; Demirekin Z.B.; Kan S.; Uysal E.The aim of the present study was to evaluate the performance of dental practitioners incorporating attachments into overdenture prostheses, via the direct method, before and after an instructive course. Forty randomized gypsum models, with implants either angulated or parallel to each other, were given to forty dentists before and after an instructive course. A rubber dam or temporary light-curing composite resin was seated around the ball abutment, to avoid acrylic resin penetration while incorporating the attachments to the implant overdenture. A comparison of proportions test showed statistically significant differences between the rubber dam and temporary composite resin groups. There were no statistically significant differences between the groups with parallel and angulated abutments, before or after the course. Temporary light-curing composite resin as a block-out material is superior to a rubber dam, when incorporating attachments into the implant overdenture. The practitioners were more successful after the course, without considering the type of block-out material. The success of the practitioners was not affected by the angulation of the abutments before or after the course.Öğe Direct composite resin application, and prosthetic management in a patient with hypohidrotic ectodermal dysplasia: A case report(2009) Tümen E.C.; Hamamci N.; Deger Y.; Tumen D.S.; Agackiran E.Ectodermal dysplasia is a rare group of disorders affecting the nails, hair, teeth, and sweat glands to a variable degree. The most common form of ectodermal dysplasia is X-linked hypohidrotic ectodermal dysplasia, which affects males more severely, while heterozygous females exhibit variable severity, ranging from mild to severe, because of inactivation of the X-chromosome. The 7-year, 3-month-old boy presented the classical features of hypohidrotic ectodermal dysplasia, including diffusely sparse hair, eyelashes and eyebrows, severe hypohidrosis, and subsequent problems with thermoregulation, dry skin and fingernail defects. Considering the clinical situation, the age and potential growth of the young patient, a maxillary RPD and mandibular complete denture were determined to be the treatment of choice. HED is usually a difficult condition to manage prosthodontically, because of the typical oral deficiencies and afflicted individuals are quite young to receive extensive prosthodontic treatment, which restores their appearance, for the development of a positive self-image.Öğe Relationship between SARS-CoV-2 Transmission Risk and Denture Cleaning Attitudes of Removable Denture Wearers: A Case-Control Study(Science Printers and Publishers Inc., 2021) Yilmaz B.D.; Deger Y.; Izgi A.D.; Tuncer M.C.OBJECTIVE: This study aimed to evaluate the relationship between severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) transmission risk and the oral hygiene behaviors of patients using removable dentures. STUDY DESIGN: A total of 220 removable dental prosthesis users were included in the study. Among them, 110 users diagnosed with the coronavirus disease were included in the case group and 110 unaffected users were included in the control group. A survey regarding their hygiene, prosthesis removal, and handwashing attitudes was completed by the participants. Measurable variables are presented as mean±standard deviation (SD) and categorical variables as numbers and percentage (%). RESULTS: Individuals in the case group had a significantly lower rate of handwashing with soap and water before prosthesis removal. Additionally, no significant difference was found between the frequencies of denture removal between the 2 groups. Furthermore, individuals who removed their prostheses more than 2 times a day had an increased rate of handwashing with soap and water. CONCLUSION: To prevent the transmission of SARSCoV-2, proper hand hygiene is important among individuals wearing removable dentures. Individual hand hygiene habits can affect transmission of the virus. Furthermore, dentists should educate their patients wearing removable dentures regarding proper hand hygiene and denture care to prevent further spread of the virus. (Anal Quant Cytopathol Histpathol 2021;43:471–476) © Science Printers and Publishers, Inc.
