Think of what your face loooks like after a visit to the dentist with a dental block. Sometimes there is no change of movement of lower face or drooping but sometimes there is. I prefer injecting with topical numbing and use of ice as I want to see the patients mobile face when I am injecting them. Others have no preference and do use a dental block .
I haven't done a dental block before filler in more than a decade. That is, as we say, very "old school". There are newer, more advanced techniques available, using microcannulas to deliver filler to the lip and perioral region, that make dental blocks ENTIRELY unnecessary. Best,Lisa Vuich, MD