Runyon C L, Rigg D L, Grier R L
J Am Vet Med Assoc. 1986 Apr 1;188(7):713-7.
Allogeneic tooth transplantation was evaluated as a functional and aesthetic treatment for dental fracture in the dog. Of 7 dogs that received tooth transplants, 5 were research animals and 2 were clinical patients. Canine teeth were transplanted immediately after extraction in the research dogs. Endodontic therapy had been performed on the affected canine tooth of one clinical patient. The other clinical patient had bilateral maxillary canine fractures 2 months earlier. One of the research dog transplants failed at 3 weeks as a result of improper surgical technique. Four of the research dogs had a solid implant for 18 months, after which time the dogs were euthanatized serially. All transplanted teeth were anchored firmly into the alveoli, but were nonviable. Root resorption, with bone replacement, was first noticed at 24 months. The transplanted tooth in the first clinical patient remained functional for 3 months, after which time the tooth was fractured. The right canine transplant in the second clinical patient failed by 3 months, probably because of preexisting periapical inflammation. The left transplanted tooth remains stable at 38 months. It was concluded that allogeneic tooth transplantation may have merit as a rapid and inexpensive method for replacement of fractured teeth in the dog. Function is compromised gradually as a result of root resorption and ankylosis, with tooth fracture likely to occur after 2 years.
异体牙移植被评估为一种用于犬牙骨折的功能和美学治疗方法。在接受牙齿移植的7只犬中，5只为实验动物，2只为临床患者。实验犬的犬齿在拔除后立即进行移植。其中一名临床患者的患侧犬齿已进行过牙髓治疗。另一名临床患者两个月前双侧上颌犬齿骨折。一只实验犬的移植牙因手术技术不当在3周时失败。4只实验犬的移植牙稳固植入达18个月，之后这些犬被依次安乐死。所有移植牙均牢固地锚定在牙槽中，但均无活力。在24个月时首次发现牙根吸收并伴有骨质替代。第一名临床患者的移植牙保持功能3个月，之后该牙折断。第二名临床患者右侧犬齿移植牙在3个月时失败，可能是由于先前存在根尖周炎。左侧移植牙在38个月时仍保持稳定。得出的结论是，异体牙移植作为一种快速且廉价的犬牙折断替代方法可能具有价值。由于牙根吸收和牙骨质粘连，功能会逐渐受损，两年后牙齿可能会折断。
