As in dentist's instruments, the triple-angle handle was developed to allow for greater precision in brushing and ease in reaching the back teeth. Description As in dentist's instruments, the triple-angle handle was developed to allow for greater precision in brushing and ease in re… More. Reviews. Close menu Product information "Mentadent Toothbrush Tecnic Gentle - Soft". As in dentist's instruments, the triple-angle handle was developed to allow for greater precision in brushing and ease in reaching the back teeth.