Is it normal to do chin filler with only one injection site?

It may be possible to fill the chin using one central injection site. It really depends on the areas which were lacking volume. It does not seem typical however. I normally use a similar fanning technique but still require 4-5 injection points in order to cross hatch the fill to create more structural support. Are you happy with the results you received? Or Did you feel your previous treatment better corrected your concerns? As long as you are satisfied with you end results, there is no concern!