Larsson E, Rönnerman A
Br J Orthod. 1981 Oct;8(4):171-3. doi: 10.1179/bjo.8.4.171.
Continuing finger-sucking often leads to an anterior open bite. The object of the present study was to attempt to illustrate whether this open bite is caused by an arrested eruption of incisors or primarily by inhibited growth of the alveolar processes. A comparison is made between 9-, 11- and 13-year-old children with continuing finger-sucking habits or who ceased finger-sucking only after 8 years of age, and children of the same ages without sucking habits in respect of the clinical crown length of central and lateral incisors in the upper and lower jaws. In all measurements the clinical crown length among children in the finger-sucking groups was greater than among children in the control groups (Table 1). The anterior open bite of the finger-suckers was therefore probably not caused by arrested eruption of incisors but rather by inhibited vertical growth of the anterior part of the alveolar processes.
持续吮指常导致前牙开牙合。本研究的目的是试图阐明这种开牙合是由切牙萌出受阻引起的，还是主要由牙槽突生长受抑制所致。对9岁、11岁和13岁有持续吮指习惯或8岁后才停止吮指的儿童，与同年龄无吮指习惯的儿童，就上下颌中切牙和侧切牙的临床冠长度进行比较。在所有测量中，吮指组儿童的临床冠长度均大于对照组儿童（表1）。因此，吮指儿童的前牙开牙合可能不是由切牙萌出受阻引起的，而是由牙槽突前部垂直生长受抑制所致。
