If more extensive, a veneer, inlay, or a crown might be needed, unless the crack goes below the gumline which might need a procedure called crown lengthening and if the cracks continue down too far to the bone, then the tooth may not even be savable and then a bridge, partial denture or implant might be needed. Also if the crack has gone to the
nerve of the
tooth and the
nerve is exposed, then a root canal might be needed as well.