hello group!

has anyone had success simulating realistic volume scattering objects, like
teeth? i know a lot of work has gone into rendering realistic skin, which is
also a volume scatterer (google BSSRDF) ... but is it possible with povray?

i experimented with scattering and absorbing media, for example with the
following material:

material {
    texture { pigment {rgbt <1,1,0.9,0.1> } }
    interior {
      media {
         scattering {1, rgb <0.8,0.6,0.2>*10 extinction 0.01 }
      }
   }
}

when i turn up the pigment transparency i get a fog-like object, when i set it
low you cannot see the inside. the effect is far from satisfactory. can anyone
please give me a hint?

thanks a lot
christoph

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