Medeiros Raquel Bueno, Mucha José Nelson
Master Program in Dentistry at Universidade Federal Fluminense, Niteroi, RJ, Brazil.
Dent Traumatol. 2009 Aug;25(4):380-5. doi: 10.1111/j.1600-9657.2009.00771.x. Epub 2009 Jun 9.
Although the published papers about this matter is limited to clinical case reports, the aim of this review was to quantify the success rate of immediate vs late orthodontic extrusion of traumatically intruded teeth. From 55 reports in a PubMed and Medline computerized search, 13 reported patients involving 22 traumatically intruded anterior upper teeth with orthodontic extrusion were selected. In the sample of 13 patients, six were males and seven females and the average age was 16.4 years old. The selection criteria were patients presenting traumatized anterior upper teeth resulting in intrusive luxation, with at least 1 year follow-up period. Orthodontic extrusive forces were applied in the immediate group within 10 weeks post-trauma, while in the late group the forces were applied only after 3 months post-trauma. Immediate and late orthodontic extrusion was extremely favorable. The success rate (without or with complications) was 95.4% against only 4.5% (1 tooth) because of inflammatory root resorption with rapid progression. All mature teeth (100%) were endodontically treated. Among the 12 immature traumatically intruded teeth, eight were endodontically treated and four were not. A high rate of success was reported in the literature in traumatically intruded teeth orthodontically extruded, either immediate or late.
尽管关于此事的已发表论文仅限于临床病例报告，但本综述的目的是量化外伤性嵌入牙即刻正畸牵引与延迟正畸牵引的成功率。通过在PubMed和Medline数据库中进行计算机检索，从55篇报告中筛选出13篇报告，其中涉及22颗外伤性嵌入上前牙并接受正畸牵引的患者。在这13例患者样本中，男性6例，女性7例，平均年龄为16.4岁。入选标准为患有外伤性嵌入性脱位的上前牙患者，随访期至少1年。即刻组在创伤后10周内施加正畸牵引力，而延迟组仅在创伤后3个月后施加牵引力。即刻和延迟正畸牵引效果极佳。成功率（无并发症或有并发症）为95.4%，因炎症性牙根吸收进展迅速仅1颗牙失败率为4.5%。所有成熟牙（100%）均接受了根管治疗。在12颗外伤性嵌入的未成熟牙中，8颗接受了根管治疗，4颗未接受治疗。文献报道，外伤性嵌入牙无论是即刻还是延迟进行正畸牵引，成功率都很高。
