Laser scanning to 3D printer
Same menu, different location in the sub-menu (at the bottom):



As T.M. states in their comment, see Poisson mesh reconstruction on StackOverflow:


  MeshLab 2016 now uses the new version of the Poisson merging, and the
  filter is called:
  
  Screened Poisson Surface Reconstruction
  
  it is in the same submenu, on the bottom. The relevant parameter
  (octree depth) is called Reconstruction Depth. It is now possible to
  merge multiple layers at once, without flattening them beforehand (as
  before). If source layer(s) have color, the result will be colored
  too. If you want to have the same result of the old version, put 0 in
  the "interpolation weight" parameter