I was thinking that if the siblings had mostly been on restricted diets (to put it mildly) and never got treats of sugary foods, maybe there have been limited cavities?
But, wisdom teeth is a good point, lots of people have impacted wisdom teeth. And there are other childhood injuries that are normal in growing up, not associated with abuse. I was well looked after and had a bad burn at about 18 months old, then I trapped my fingers in a door when I was about 3 or 4, and both of these incidents required hospital treatment. Then I had things like measles, mumps, rubella, and I needed GP care for those things. Lots of kids break an arm or a leg while playing, or hit their head badly. How could all of the siblings avoid all these normal childhood accidents and illnesses?
We've heard that one child was treated for a dog bit, maybe there was more healthcare in the earlier years and it's just that the siblings have been more restricted in their movements/actions and physically chained too, to avoid many of these things like broken bones in later years. But you can't avoid things like impacted wisdom teeth, you either get them or you don't, and being smaller in stature than they probably would have turned out if not for malnutrition, wouldn't that make impaction more likely if their jaws grew too small for their wisdom teeth to fit in their mouths?
But then there's one sibling who looks like he's missed out on eye treatment. I am wondering if another of them has scoliosis. These things we can conjecture were ignored by LT and DT out of neglect, and I suppose a child crying with toothache or earache would be told to shut up instead of being given a tylenol and taken to a doctor?