Yazar "Dindar, Mediha Büyükgöze" seçeneğine göre listele

Listeleniyor 1 - 4 / 4
  • Küçük Resim Yok
    Öğe
    The Effect of Brushing Force on The Surface Properties and Color Stability of Dental Enamel
    (2023) Dindar, Mediha Büyükgöze; Atay, Meltem Tekbaş
    Aim: This study aimed to determine the effects of toothbrushing force on the surface roughness, gloss, and color change of dental enamel. Material and Methods: This study was carried out on the sound vestibular enamel surfaces of 16 human permanent incisors extracted for periodontal or orthodontic reasons. Teeth were randomly divided into 2 subgroups (n=8, per group) and embedded in acrylic blocks. The vestibular enamel's initial surface roughness, gloss, and color were measured. Three measurements per sample were performed and averaged. Six months of toothbrush simulation with 5,000 circular cycles (with a load of 1.5 and 2.5 N for groups 1 and 2, respectively) (MOD Dental, Turkey) was performed. The same measurements were repeated and the data were analyzed with independent samples and paired sample t-tests (p<0.05). Results: A significant difference was observed between the surface roughness values after the toothbrushing simulation with 1.5 and 2.5 N (p=0.022). Surface gloss values decreased significantly when 1.5 and 2.5 N forces were applied (p=0.001, p=0.002, respectively). Color change (?E) for brushing force of 2.5 N (3.48±0.83) was statistically significantly higher than 1.5 N (2.42±0.86), (p=0.025). Conclusion: Results of this study revealed that the surface roughness and color change values increased depending on the applied brushing force whereas gloss values decreased.
  • Küçük Resim Yok
    Öğe
    Investigation of Short and Long Term Effects of Various Mouthwashes on the Color Stability of Hybrid Composites
    (2022) Dindar, Mediha Büyükgöze; Atay, Meltem Tekbaş
    Objective: The color stability of dental composite restorations is an important criteria for clinical success. This study aimed to investigate the long-term effects of various mouthwashes on the staining of direct composites. Methods: Disc-shaped samples were prepared by using 4 different commercially available hybrid composites (Clearfil Majesty, Kuraray; Charisma Smart, Heraeus Kulzer; Quadrant Universal, Cavex; Brilliant EverGlow, Coltene) and divided randomly into five groups according to mouthwashes: Sensodyne, Oral B 3D White Luxe Glamorous Shine, Listerine, Colgate Plax, Meridol. Initial colors of specimens were measured by using a spectrophotometer (Vita Easyshade V, Germany). Specimens were immersed in the mouthwashes and stored in an incubator set at 37 °C for 12, 60, and 120 hours, equivalent to daily use of mouthwash for 1, 5, and 10 years, respectively. Subsequently, the color change value of different materials was calculated as ?E*ab. The data were analyzed by ANOVA and paired sample t-tests. Results: The mouthwash type and application time affected the color change values (p=0.00). The most color change (?E*) was observed in Colgate Plax, followed by Meridol. The least ?E* was observed in Sensodyne after 1 year and in Oral B after 5 and 10 years. The materials showing the least and most ?E* after 1-year mouthwash application were Brilliant and Quadrant, respectively. The least and most ?E* after 5 and 10 years were observed in Brilliant and Charisma groups, respectively. Conclusion: The staining in composite restorations caused by mouthwashes varies depending on the structural properties of the resin composite, the pH of the mouthwashes, and exposure time.
  • Küçük Resim Yok
    Öğe
    Knowledge, Attitude and Practices of Dental Patients About Cross-infection and Infection Control
    (2021) Atay, Meltem Tekbaş; Dindar, Mediha Büyükgöze
    Purpose: This study aimed to evaluate the patient’s knowledge, attitude, and practice of cross-infection control in dentistry. Materials & Methods: This cross-sectional study was conducted at the Faculty of Dentistry, Trakya University. In this study, 250 patients (134 female and 116 male) aged 18 years and older (35.5±13.9) participated and data were collected using a questionnaire containing questions to determine the knowledge, attitudes, and practices related to cross-infection and infection control. Required personal and socio-demographic data were obtained. A chi-square test was conducted for categorical variables. Kruskal Wallis and Mann-Whitney U tests were used to compare questionnaire scores (p <0.05). Results: Most of the participants (30.5%) reported that their sources of information on dental infection control were social media. Knowledge scores of females were statistically signi?cantly higher than males (p=0.005) and participants living in the city were signi?cantly higher than those living in the town (p=0.015). Knowledge scores of health-care workers were signi?cantly higher than both other workers and unemployed/students (p=0.001, p=0.004, respectively). Regarding participants’ attitudes and practices, only 29.2% of the participants questioned the dentists about the contagious disease, and only 36% asked about the sterilization method of the dental instruments. Most of the participants perceived that wearing gloves, masks, eyewear, and face shield would protect both patients and dentists. Conclusion: Participants in this study seem to have a satisfactory level of knowledge about cross-infection and infection control methods in the nowadays’ pandemic condition. However, dental health professionals should make additional efforts to educate and encourage dental patients.
  • Küçük Resim Yok
    Öğe
    Microscopic evaluation of fissure patterns of posterior permanent teeth: An in vitro study
    (2022) Dindar, Mediha Büyükgöze; Atay, Meltem Tekbaş
    Aim: Pits and fissures are considered the areas in the posterior teeth that are most susceptible to decay. The aim of this in vitro study was to evaluate the prevalence of fissure types in relation to tooth type and localization. Methodology: A total of 100 extracted sound maxillary and mandibular molars and premolars were included in this study (25 teeth/group). The extracted teeth without any caries, cracks, fractures, anomalies, or restorations were classified according to tooth type and localization after disinfection. The teeth were sectioned in the buccolingual direction from the deepest part of the central fossa on the occlusal surface, and the fissure patterns were observed using a stereo microscope. The frequency distribution and percentages of the categorical data were obtained. Chi- square and exact tests were performed to compare the localization of the teeth and the prevalence of fissure types (p < 0.05). Results: The V-type fissure pattern (59%) was statistically significantly more common in both the premolar and molar teeth, followed by the I- type (18%) and U-type (14%) patterns (p = 0.000). The rarest fissure pattern was the IK type. No relationships were found between fissure pattern, the tooth subgroups, and localization (p = 0.390). Conclusion: Determining the types of fissure morphology is important for the prevention of caries on the occlusal surfaces of molars and premolars.