Are your teeth single or crowned? It is normal if there is a gap between the two adjacent teeth of a single tooth. If you mean that there is a gap between the porcelain teeth and the underlying gums, it may be that the gums have receded. With normal age, the gums will shrink in part (this is a normal physiological shrinkage). I suggest you go to the hospital for examination. Because gingival recession has physiological atrophy and pathological atrophy. If it is pathological atrophy, according to the specific size of the gap, if the gap is large, your porcelain tooth will be classified as a bad restoration in medicine, and it needs to be removed and re-implanted. If the gap is normal, you don’t need to worry about it.