Pearson M H, Robinson S N, Reed R, Birnie D J, Zaki G A
Maxillofacial Unit, Queen Alexandra NHS Trust Hospital, Portsmouth, UK.
Eur J Orthod. 1997 Oct;19(5):511-5. doi: 10.1093/ejo/19.5.511.
The impacted palatal canine requires a combination of both surgical and orthodontic management. Two types of approach are commonly used: simple exposure, or exposure with bracketing at the time of surgery. In this study 104 consecutively treated patients with palatally impacted canines were examined at two centres, one at which the ectopic tooth was surgically exposed alone and the other where an orthodontic bracket was bonded to facilitate early traction, and the flap replaced. The aim was to compare the outcome and complication rate for each type of procedure. In 30.7 per cent of all cases exposed and bracketed a second surgical intervention was required, compared with 15.3 per cent in the simple exposure group. Bracketing, though effective, is a more costly and time-consuming procedure, and it is suggested that simple exposure provides an equally efficient and predictable method of managing the palatally impacted canine with obvious clinical and financial benefits. The long-term periodontal status of the teeth which have been exposed in these two ways, however, needs further investigation.
埋伏阻生的腭侧尖牙需要手术和正畸联合治疗。常用的方法有两种：单纯暴露，或在手术时暴露并粘接托槽。在本研究中，在两个中心对104例连续接受治疗的腭侧埋伏阻生尖牙患者进行了检查，其中一个中心仅通过手术暴露异位牙，另一个中心则在手术时粘接正畸托槽以利于早期牵引，然后复位瓣。目的是比较每种手术方式的治疗效果和并发症发生率。在所有暴露并粘接托槽的病例中，有30.7%需要进行二次手术干预，而单纯暴露组为15.3%。虽然粘接托槽有效，但它成本更高且耗时更长，建议单纯暴露是一种同样有效且可预测的治疗腭侧埋伏阻生尖牙的方法，具有明显的临床和经济效益。然而，以这两种方式暴露的牙齿的长期牙周状况需要进一步研究。
