Comparative study of different colors of molded elastomeric ligatures

Mariana MARTINS E MARTINS, Álvaro de Moraes MENDES, Marco Antônio de Oliveira ALMEIDA, Maria Teresa de Andrade GOLDNER, Viviane Ferreira RAMOS, Sarita de Sá GUIMARÃES

Aim: the purpose of this study was to evaluate the different colors of molded elastomerics ligatures from Morelli trademark. Methods: the ligatures were stretched over stainless dowels with a circumference approximating that of upper central incisor bracket. They were immersed in a synthetic saliva bath at 37ºC and had force levels measured at initial (0h) and after 24 hours of immersion. The results were obtained from a computer connected to a traction machine and were submitted to statistical analysis (ANOVA e Tuckey) with p<0.05. Results and Conclusion: the medium values were md=0.3792KgF for 0h and md=0.1286KgF for 24h and the percentage of force decay were 66.07% ± 2.31%. The results revealed statically differences between forces delivered in 0h and 24h. At 0h, there were differences statistically significance between some colors of ligatures before the action of the time and the immersion in artificial saliva bath, with higher values for the pearl (md=0.4024KgF) and minors values for the slight green (md=0.3511KgF). At 24h, it was also find differences statistically significances between some colors, but the distribution was different than the observed at 0h. The slight green, red, yellow and white colors had the minor percentage of force decay, in which slight green showed the best behavior (62.60%). However, the pearl, silver and gray had the highest percentage of force decay, with pearl showing the worst behavior (69.23%).

Keywords: Elastomers. Ligature. Color. Elasticity.

Saturday, December 28, 2024 22:30