The allegation someone decided to leave Halbach's teeth behind but plant her bones and tooth roots seems absurd. Someone planting a body to frame Avery would want Halbach to be able to be identified dentally. There is not a single rational reason that one would recognize her teeth among the remains and want to avoid planting her teeth along with the other remains. Yet I will include this option in the poll for the sake of completeness. The claim that they all fell out during the fire into the ash but were too small to be found doesn't really seem to fly either. The killer supposedly was able to find the tooth roots, which are smaller than crowns, among the ash in order to plant those and even supposedly recovered many of the teeth from the jean zipper and a zipper tooth is considerably smaller than a crown. The only rational argument I can think of to try to make regarding why one would not plant teeth and would leave them behind would be if the teeth were burned to a point where they could no longer be identified as teeth and thus the planter didn't realize they were teeth so left them behind. Indeed consider the court testimony about how teeth will look like a small piece of wood simply and hard to identify as a crown. Of course if it is possible for a fire to damage teeth to the point that they can't be recognized as teeth that means the teeth could have been in Avery's pit and simply unable to be determined to be teeth. The killer could have transferred the teeth among the ash that was transported and yet no one realized it. Take note that anyone who picks option 3 or 4 are effectively conceding that if Halbach had been burned in Avery's pit that her teeth could have been burned to the point where no longer recognized as teeth. It would be extremely hypocritical to claim that in a fire somewhere other than Avery's burn pit, her teeth would be able to reduced to a form that is no longer recognizable as teeth but that is not possible in Avery's pit. Thus anyone selecting option 3 or 4 are effectively admitting the invalidity of the argument that Halbach's remains had to have been planted because no fragments that were able to conclusively be identified as crowns were found.