Purpose:The aim of this study was to evaluate and compare the 1 year clinical performances of a self-adhering flowable composite and a commercially available self-etch adhesive/composite system in occlusal restorations of primary second molars.Materials and methods:Thirty-one patients (10 male, 21 female) were recruited into the study. A total of 62 occlusal cavities were restored with either a universal composite or a self-adhering flowable composite according to manufacturers' instructions. The restorations were clinically evaluated 1 month after placement as baseline, and after 3, 6 months and 1 year post-operatively using modified USPHS criteria by two operators.Results:Lack of retention was not observed in any of the restorations. With respect to color match, marginal adaptation, secondary caries and surface texture, no significant differences were found between two restorative materials tested after 1 year. None of the restorations had marginal discoloration and anatomic form loss on the 1 year follow-up. Restorations did not exhibit post-operative sensitivity at any evaluation period.Conclusion:The clinical assessment of self-adhering flowable composite exhibited good clinical results with predominating alpha scores after 1 year. Advantage of the application convenience for children is promising for self-adhered flowable composite materials in pediatric use.

Background. Mineral trioxide aggregate (MTA) is a material that has recently gained popularity in the application of the vital pulp therapy. Along with the increasing use of MTA to this end, the permanent restoration material to be placed on MTA has become a significant issue. The aim of this in vitro study was to investigate the bond strength of the novel low-shrinkage silorane-based composite resin (SBC) to MTA. Methods. Twenty acrylic blocks filled with MTA were prepared for this study. SBC was the test group and methacrylate-based composite resin (MBC) was used as the control group. Shear bond strength test was performed to determine the bond strength. The surfaces of broken samples were evaluated under a stereomicroscope and grouped as adhesive, cohesive and mixed. Data were examined by statistical analysis. Results. Statistical analysis revealed that SBC exhibited higher shear bond strength than the control group. It was observed that most of the failures in the test group were of cohesive type within MTA. Conclusion. Based on the results, SBC showed higher shear bond strength than the control group; however, clinical follow-up is needed to evaluate the clinical success.

The aim of the present study was to evaluate the level of knowledge of general dental practitioners (GDPs) and dental specialists (DSs) about the management of Traumatic Dental Injuries (TDIs). Materials and methods:A total of 199 participants from three cities in Turkey completed the online questionnaires. The first section of the questionnaire consisted of personal information about the dentists, while the second section consisted of multiple-choice questions regarding their knowledge of managing different types of TDIs in children. The data were statistically analyzed using the Chi-square test or Fisher's test and Mann-Whitney U test or Kruskal Wallis test. The level significance was taken as 0.05 in all tests. Results:The questionnaires were completed by 145 GDPs and 54 DSs. In total, 29.1% of the participants (58) had less than 3 years of experience, 20.6% (41) had between 3 and 6 years of experience, 16.1% (32) had between 7 and 10 years of experience, 14.1% (28) had between 11 and 15 years of experience, 8% (16) had between 16 and 20 years of experience, and 12.1% (24) had more than 20 years of experience in clinical practice. Dentists with fewer years of experience (<10 years) were more knowledgeable than those with more years of experience (p=0.001). Moreover, DSs were more knowledgeable than GDPs (p=0.002). Conclusions:Our findings revealed a moderate level of knowledge about TDI management among dental practitioners. These findings highlight the need to improve dentists' knowledge about TDI treatment protocols.

Objective: The aim of this in vitro study is to evaluate the microleakage properties and shear bond strength to primary and permanent molar dentine of the low polymerization shrinkage silorane based composite resin and to compare the results with a methacrylate based composite resin. Materials and Methods: Shear bond strength test method was selected to evaluate the bond strength of the groups. Buccal dentine surfaces of primary and permanent molar teeth were used. The surfaces of the broken samples were detected under stereomicroscope and were grouped as adhesive, cohesive and mix. Dye penetration method was selected for the microleakage test. Class V cavities were prepared on the buccal surfaces of primary and permanent molar teeth. Dye penetration levels were recorded in accordance with determined scores.Results: Silorane based composite resin was showed lower shear bond strength for primary and permanent molar dentine (p< 0.05). It was observed that most of the failures occurred in silorane based composite resin group, were adhesive type failures. According to the microleakage evaluation, primary molars were restored with silorane based composite resin were showed least microleakage (p< 0.05). Conclusion: The results of the laboratory tests should not be seen as the conclusion of the evaluated material but can be considered as preliminary information about the clinical performance of the material.