Absolutely! most babies find comfort in gnawing on something, and of course the most convenient item is his or her own hands! certainly a teething
toy may be helpful to many infants.
Interestingly, neither of my kids took to a teething toy, but preferred their own hands (or my knuckles!) they will outgrow this phase after the teeth come in, so not to worry. Bibs are also helpful for all the drool!