Diş Hekimliği Fakültesi Koleksiyonu
Permanent URI for this collectionhttps://hdl.handle.net/11499/45989
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Article Investigation of Shear Bond Strength of Different Adhesive Agents to Demineralized Enamel with or Without Resin Infiltration(Wolters Kluwer Medknow Publications, 2023-01) Bilgic, Rabia; Yapar, Merve Iscan; Celik, Neslihan; Akgul, NilgunObjectives: This study aimed to investigate the bond strength of adhesive agents to enamel surfaces with and without resin infiltration. Materials and Methods: The crowns and roots of 198 human incisors were separated from each other and placed in an acrylic mold. The teeth were ground until the guide grooves created with the slotted bur disappeared. Then, it was thrown into the demineralization solution and artificial caries lesions were created. Teeth were randomly divided into two main groups, and each main group was divided into five subgroups. And also the control group was determined. The materials and composite were applied to demineralized enamel. For the shear bond analysis, a universal testing machine was used. Statistical analysis of the data was evaluated by one-way ANOVA test and independent t-test. Results: The result showed that there was no statistical difference between no resin infiltrant adhesive bonding agent groups (P < 0.05) and no difference between resin-treated groups and untreated groups of each bonding agent (P < 0.05). Furthermore, there is no difference between resin infiltrant pretreated adhesive bonding agent groups (P < 0.05). Conclusion: The use of different adhesive systems during restorative procedures after resin infiltration did not affect the shear bond strength.Article Citation - WoS: 4Citation - Scopus: 2Il-13 Gene Polymorphisms (-1112 C/T And-1512 A/C) in Patients With Chronic and Aggressive Periodontitis: Effects on Gcf and Outcome of Periodontal Therapy(Wolters Kluwer Medknow Publications, 2021-07) Gorgun, E. P.; Toker, H.; Tas, A.; Alpan, A. L.; Sari, I; Silig, Y.Background: IL-13 is the key cytokine in the regulation of inflammatory with an autoimmune disease and has an anti-inflammatory effect. Aims: This study aimed to compare IL-13 (-1112 C/T and -1512 A/C) gene polymorphisms in patients with aggressive periodontitis (AgP), chronic periodontitis (CP), and periodontally healthy group (C) and evaluate the effect of nonsurgical periodontal therapy on gingival crevicular fluid (GCF) IL-13 levels in patients. Materials and Methods: One hundred thirty patients with AgP, 120 patients with CP, and 70 periodontally healthy subjects were included in this study. Clinical parameters were recorded (plaque and gingival index, probing pocket depth, clinical attachment level), and GCF and blood samples were taken at baseline and 6-week. Nonsurgical periodontal therapy was performed in patients with periodontitis. Gene analyses (IL-13 - 1112C/T (rs1800925) and - 1512 A/C (rs1881457) were performed with real-time polymerase chain reaction (PCR) and cytokine levels were determined by an enzyme-linked immunosorbent assay method. Results: AgP and CP patients showed significant improvement in clinical parameters after periodontal therapy (P < 0.05). According to results, genotype distributions and allele frequencies in IL-13 variants - 1112C/T and - 1512 A/C were found similarly in all groups (P > 0.05). In the AgP group, GCF IL-13 cytokine level is statistically significant and increased in 6 weeks; however, in the CP group, there is no statistically significant difference between baseline and 6 week. In the AgP group, baseline GCF IL-13 cytokine level is lower than those of the CP group and C group (P < 0.05). Conclusion: Within the limits of this study, IL-13 -1112 and -1512 gene polymorphisms have not been associated with AgP and CP, and GCF IL-13 cytokine level is increased after treatment in the AgP group.Article Citation - WoS: 4Citation - Scopus: 4Effects of blood contamination and hemostatic agents on bond strength in primary teeth dentin(Wolters Kluwer Medknow Publications, 2020-08) Erdogan, Y.; Karayilmaz, H.; Unal, M.; Gungor, O.; Ciftc, Z. Z.Background: Contamination is a common problem in pediatric restorative dentistry and there are a few studies that investigate blood contamination, hemostatic agents, and tooth dentin. Aim: The purpose of this study was to evaluate the effects of blood contamination and hemostatic agents on the bond strength of two different bonding systems with the dentin of primary teeth. Materials and Methods: Buccal and lingual dentin surfaces of 40 primary second molar teeth were used for this study. Specimens were divided into 4 groups according to the contamination and hemostatic agents (Blood-B, Ankaferd Blood Stopper-A, ViscoStat-V, Control-C) and then every group was further divided into two subgroups according to the bonding systems (Clearfil SE Bond-I, All Bond Universal-II, n = 10 per group). A bulk-fill composite resin was built-up on the surfaces. The specimens were tested in the micro shear mode at a crosshead speed of 1 mm/min on a universal test machine. Statistical analysis was performed with ANOVA and Tukey's tests at P < 0.05. Results: Significant differences have been detected in the micro shear bond strengths only between the Ankaferd Blood Stopper (ABS) (AI = 13.72 ± 4.47 and AII = 9.12 ± 4.4) and control groups (CI = 22.78 ± 10.86 and CII = 16.49 ± 6.55) without regards to the bonding systems. The highest scores were obtained in the control groups. Clearfil SE Bond showed better performance than All Bond Universal in all groups. Conclusion: It was determined that only the ABS contamination groups showed statistically significant decreases in the bond strengths when compared with control groups. © 2020 Wolters Kluwer Medknow Publications. All rights reserved.Article Citation - WoS: 22Citation - Scopus: 24In vitro evaluation of the wear of primary tooth enamel against different ceramic and composite resin materials(Wolters Kluwer Medknow Publications, 2019) Bolaca, A.; Erdogan, Y.Background: Although there are several studies on permanent tooth wear caused by dental materials, studies concerning primary teeth are limited. Aim: To evaluate the wear of primary tooth enamel against different ceramic and composite resin materials. Settings and Design: In vitro study. Materials and Methods: We assessed five materials (n = 10 per group): monolithic zirconia (group Z), lithium disilicate glass ceramic (group L), resin nanoceramic (group R), nanohybrid composite resin (group C), and primary tooth enamel (group E). The mesiopalatal cusps of primary maxillary second molars were used as antagonists. Wear tests were performed in a dual-axis chewing simulator, and the volume loss in the antagonist tooth was evaluated using a laser scanner and three-dimensional profiling system. Statistical Analysis Used: Data were statistically analyzed using one-way analysis of variance with Tukey's post hoc tests (P < 0.05). Results: The maximum antagonist tooth wear was observed in group L (3.84 ± 0.7 mm 3 ), followed by groups C (3.68 ± 0.76 mm 3 ), R (3.48 ± 0.71 mm 3 ), Z (2.66 ± 0.65 mm 3 ), and E (1.66 ± 0.42 mm 3 ). Volume loss was significantly lesser in group Z than in groups L and C (P < 0.05), whereas there were no significant differences among groups L, C, and R. Conclusion: Within the limitations of this in vitro study, our findings suggest that zirconia should be used for full coronal coverage in primary tooth restorations because it causes lesser antagonist tooth wear than does lithium disilicate, resin nanoceramic, and nanohybrid composite resin. © 2019 Nigerian Journal of Clinical PracticeArticle Citation - WoS: 8Citation - Scopus: 11The effects of psychostimulants on oral health and saliva in children with attention deficit hyperactivity disorder: a case-control study(Wolters Kluwer Medknow Publications, 2018) Ertugrul, C. C.; Kirzioglu, Z.; Aktepe, E.; Savas, H. B.Introduction: This study investigated the dental health problems and saliva characteristics of children under psychostimulant therapy for attention-deficit hyperactivity disorder (ADHD). Materials and Methods: One hundred and twenty children aged 7-12 years were divided into three groups. Groups 1-2 comprised children diagnosed with ADHD: those who had not yet started psychostimulant therapy (Group 1) and those already receiving long-term psychostimulant therapy (Group 2). Group 3 comprised healthy, nonmedicated children. Possible side effects of psychostimulants were investigated at the beginning of study in Group 2 and after 3 months drug use in Group 1. Bruxism and dental erosion prevalence, salivary Streptococcus mutans count, buffering capacity, and stimulated salivary flow rate (SSFR) were measured, and salivary amylase, calcium, total protein, and proline-rich acidic protein (PRAP) levels were quantified in the beginning of the study. Data were analyzed using the Kruskal-Wallis test. Results: The most frequently reported side effects of psychostimulants were decreased appetite, dry mouth, and increased fluid consumption. The prevalence of bruxism and dental erosion was higher in Groups 1 and 2 than in Group 3, but the differences were not significant (P > 0.05). In Group 2, subjective dry mouth feel was reported by 32.5% of patients and 17.5% had a very low SSFR. Salivary amylase, calcium, total protein, and PRAP levels were lower in Group 2 than the others, but the differences were not significant (P > 0.05). Conclusions: ADHD and psychostimulant therapy do not appear to be significantly related to decreasing SSFR or protective saliva components against dental caries. However, a systematic investigation of the long-term safety of psychostimulants is needed. The most effective method of maintaining dental health of children with ADHD is frequent appointments focusing on oral hygiene practices accompanied by dietary analyses. © 2018 Medknow Publications. All rights reserved.