Vertical tooth bone loss can be grafted but horizontal bone loss cannot be grafted. can you explain this out to me?

Different situation: If i can make an analogy, it might help you to understand the difference. If you get your finger cut with a deep gash, your body will heal it, especially if the two areas are sutured together. If you get your finger cut off, it won't grow back. A vertical bony defect has surrounding blood supply & bone to help fill the defect.If there is no surrounding bone & blood supply, it won't take the graft.

Blood supply : If you have a vertical defect it is easier to get bone regeneration than horizontal because there is more blood supply available to nourish the bone graft there usually more walls in a vertical defect to provide blood you can get horizontal bone regeneration but it isn't as predictable as vertical good question.