The outcomes showed a significant reduction of discomfort compared to baseline values for teeth of SG-@ immediately post treatment ( @ % ) ( P < @ ) , after @ month ( @ % ) ( P < @ ) and after @ months ( @ % ) ( P < @ ) , respectively , compared with the reduction scores of @ % ( P < @ ) , @ % ( P < @ ) and @ % ( P > @ ) , recorded for SG-@ ; @ % , ( P < @ ) , @ % ( P < @ ) , and @ % ( P < @ ) , recorded for SG-@ ; @ % ( P < @ ) , @ % ( P < @ ) , and @ % ( P < @ ) , recorded for SG-@ .