Objectives:The aim of this study is to evaluate the child preference for dentist attire and camouflage versus conventional syringe in reduction of anxiety.Materials and Methods:A total of 600 children aged 6–14 years were made to look at a set of six photos of an individual dressed with different colored apron of pink, green, blue, white colors, formal dress, and cartoon character along with conventional syringe and camouflage syringe with a toy-like appearance to permit injection of local anesthesia. Children's anxiety level during injections and with colored coat was assessed and recorded using the Modified Child Dental Anxiety Scale faces version.Statistical Analysis Used:SPSS statistical software version 21 and using Chi-square test.Results:Among age group of 6–8 years, 65.33% selected colorful apron, while other age groups 9–10, 11–12 years, and 13–14 years selected 47.34%, 57.34%, and 50.67% white coat, respectively (P < 0.05). For syringe, 78% of younger age group (6–10 years) preferred camouflage syringe, whereas 71% of older age group (11–14 years) preferred conventional syringe. Anxiety level of all children for syringe was more compared to that of white coat.Conclusion:Younger children prefer colorful attire of dentist and camouflage syringe over conventional compared to older one.
Aims and Objectives:The introduction of ceramic brackets was a much-heralded development in the field of orthodontics. However, the increased frictional resistance with these brackets led to the development of ceramic brackets with metal slots, which claimed to combine the esthetics of ceramic brackets with the low frictional resistance of metal brackets. Hence, this study was undertaken to evaluate the rate of canine retraction and the amount of anchor loss while using ceramic brackets and ceramic brackets with metal slots and with conventional preadjusted edgewise appliance (PEA) metal brackets.Materials and Methods:The patient sample consists of 12 patients. Six patients received ceramic brackets on one canine and conventional PEA metal brackets on the opposite canine within the same arch. The other six patients received ceramic brackets with metal slot on one canine and conventional PEA metal brackets on the opposite canine within the same arch. Unpaired t-test was used to analyze the data using SPSS version 20 (3M Unitek, Bangalore, Karnataka, India). The rate of retraction was calculated for individual canine retraction after initial leveling and aligning. Anchor loss was also calculated using the pterygoid vertical to the mesiobuccal cusp of the upper first molar on the lateral cephalograms.Results:The result of this study showed that the difference in the rate of retraction between ceramic brackets with metal slot and conventional PEA metal brackets and ceramic bracket while clinically significant was not statistically significant. The difference in the amount of loss of anchorage of both the groups was not statistically significant.Conclusions:Incorporation of the metal slot in ceramic brackets has reduced frictional resistance for more efficient and desired tooth movement. Ceramic brackets with metal slot generate lower frictional forces than ceramic brackets but higher than conventional PEA metal brackets.
Aims and Objectives:Conventionally, composites are cured using halogen-based light-curing units (LCUs). However, recently, light-emitting diode (LED) LCUs have been introduced commercially, claiming many advantages, yet producing comparable bond strength even when cured with single LED LCUs. This present study was undertaken to compare the shear bond strength of orthodontic brackets bonded to teeth with conventional halogen LCU (3M ESPE Elipar 2500) and LED LCU (3M ESPE Elipar FreeLight 2) and to determine the site of bond failure.Materials and Methods:Fifty extracted human bicuspid teeth were randomly divided into two groups of 25 each. All the teeth were etched and primed. Then, orthodontic brackets were bonded onto the teeth with the light-cured adhesive (Transbond XT, 3M Unitek), and the adhesive was cured with halogen LCU and LED LCU for Group I and Group II, respectively. The brackets were then subjected to shear stress using a Hounsfield universal testing machine at a crosshead speed of 1 mm/min. The force was recorded in Kgf and converted to MPa. The residual adhesive was scored based on the modified adhesive remnant index (ARI) using an optical stereomicroscope. The data were analyzed using the Student's t-test and the Mann–Whitney test at a significance level of 0.05.Results:The results have shown that there is no significant difference between the shear bond strengths and the ARI scores of both the groups.Conclusion:From this study, it can be concluded that (1) LED LCUs containing even only a single LED can cure the composite as well as a halogen-based LCU; (2) there is no statistically significant difference in the shear bond strengths of the two groups; and (3) the ARI scores show no significant difference.
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