highly significantP = 0.001
There were nonsignificant differences in mean retention value of RSG and OSG bar groups ( P = 0.13 and P = 0.06, respectively) while there were highly significant differences of both HSG and HCG bar groups ( P = 0.001).
There were nonsignificant differences in mean retention value of RSG and OSG bar groups ( P = 0.13 and P = 0.06, respectively) while there were highly significant differences of both HSG and HCG bar groups ( P = 0.001).