牙根短小在临床上并不少见,一般分为先天性和后天性两大类,先天性牙根短小是指牙根发育不良,与遗传性因素、全身性疾病、医源性因素等有关,通常是牙根发育的调控基因出了问题;后天性牙根短小通常是由损伤和刺激导致的牙根吸收造成的。严重牙根短小者可造成牙齿过早脱落,从而影响美观和功能。 Short roots are not uncommon in clinical practice, are generally divided into two major categories of congenital and acquired, congenital short roots refers to dysplasia, and hereditary factors, systemic diseases, iatrogenic factors, etc., usually the root Developmental regulatory genes are problematic; acquired root shortness is usually caused by root resorption due to injury and irritation. Serious teeth short teeth can cause premature loss, thus affecting the appearance and function.