ABSTRACT
【Objective】 To evaluate the clinical effect of 3D printing technology in autogenous tooth transplantation for tooth loss. 【Methods】 From September 2017 to August 2021, 169 patients (176 teeth) were selected and analyzed regarding age, gender, recipient site, positioning of the donor tooth, transplantation time, and long-term follow-up. 【Results】 A total of 176 autogenous tooth transplants were completed, consisting of 133 cases of traditional autogenous tooth transplantation and 43 cases of autogenous tooth transplantation with 3D printing technology. The donor tooth separation time for autogenous tooth transplantation with 3D printing technology was significantly less than that for traditional autogenous tooth transplantation (P<0.000 1). A total of nine teeth were removed 3 months after the operation due to loosening(autogenous tooth transplantation failure), among which seven failed in traditional tooth transplantation and two failed in autologous tooth transplantation with 3D printing technology. The success rate of traditional tooth transplantation was 77% and the retention rate was 94.7%. The success rate of tooth transplantation with 3D printing technology was 88%, and the retention rate was 95.3%. 【Conclusion】 3D printed tooth donor model can greatly shorten the time of tooth donor, reduce the damage to the periodontal membrane cells of the transplanted teeth, and improve the success rate of tooth transplantation. It is worthy of broad promotion.
ABSTRACT
Objective@#To evaluate the therapeutic effect of dental autotransplantation with the application of digital design combined with 3D printing of donor tooth models and recipient alveolar fossa model preoperatively.@*Methods@# Twelve cases that could not be retained due to tooth fracture or extensive absorption of alveolar bone were recruited in the study. Cone-beam computed tomography (CBCT) data were imported into Mimics software for digital design, and the best-matched third molar was selected as the donor tooth. Replicas of the donor teeth and the recipient socket were printed out with three-dimensional (3D) printing technologies as a simulation model for recipient tooth socket preparation. During tooth autotransplantation, preparation of the recipient tooth socket and the donor tooth were guided by the 3D-printed replicas sequentially. Then, the donor tooth was implanted into the recipient tooth pocket. Patients were followed up at 3, 6 and 12 months after the operation, with CBCT examination to evaluate the status of bone reconstruction and periodontal ligaments at each time point. @*Results@#Twelve patients were transplanted with an autogenous third molar with the apical foramen completely closed. Among them, 7 patients had alveolar fossa infection before the operation, of which 1 had extensive resorption of the alveolar bone due to the infection. All 12 patients recovered well after the operation and were followed up for at least 12 months. In total, 11 caseswere successful in tooth autotransplantation with normal mastication, and 1 case had root resorption 14 months postoperation.@*Conclusion@#Digital design combined with 3D printing technology can assistin the selection of thebest-matched donor tooth and preparation of the recipient socket before tooth transplantation proceduresand reduce the extra-alveolar exposure time of the donor tooth and number of trial placementsintothe alveolar fossa. Thus, this combined strategy can effectively improve the outcome of dental autotransplantation.
ABSTRACT
El autotrasplante dental se define como el traslado de un diente de su alveolo a un alveolo post-extracción o alveolo confeccionado quirúrgicamente, en la misma persona. Actualmente siguiendo los criterios de selección adecuados así como una técnica quirúrgica minuciosa puede resultar una alternativa terapéutica ideal en ciertos pacientes. Las tasas de éxito han aumentado con el tiempo alcanzando cifras mayores al90%. En el presente artículo se reportan dos casos de éxito de autotransplantesdentales y se revisan las indicaciones, contraindicaciones y criterios de éxito de los mismos.
Autogenous tooth transplantation is defined as the movement of a tooth from its socket to a post-extraction or surgically created socketin the same individual. Today, by following appropriate selection criteria and a refi ned surgical technique, this procedure can prove tobe an ideal therapeutic alternative in certain patients. Success rateshave increased over time, reaching as high as 90%. In this article, wepresent two cases of successful autogenous tooth transplantation and a review of the indications, contraindications, and success criteria associated with these.
Subject(s)
Humans , Adolescent , Female , Tooth, Impacted/surgery , Tooth/transplantation , Transplantation, Autologous/methods , Tooth Extraction/methods , Molar , Radiography, Panoramic , Treatment Outcome , Molar, Third , Transplantation, AutologousABSTRACT
Aim: The aim of this study was to assess the enamel matrix derivative (EMD) as biomaterial used in autogenous tooth transplantation. Material and Methods: The study consisted of 3 beagle dogs, 5 months old, in which six incisors and six premolars were transplanted to mechanically prepared recipient alveolar sockets. One group of teeth was transplanted to a recipient bed, with EMD in the root surface. The second groups of teeth were transplanted using saline solution in the root surface. Every week, clinical examinations were done. Nine weeks later, the animals were killed and the specimens decalcified and prepared for histological and imunohistochemical analysis. Periodontal healing was evaluated by undertaking histomorphometric investigation and analyzed using the Mann- Whitney test (P = 0.05). Results: In both groups, all the transplanted teeth survived. Between the experimental groups, there was statistically significant difference in the complete healing (P = 0.004). There was statistically significant difference between the treatment group in the occurrence of inflammatory root resorption (P = 0.015) and the occurrence of replacement root resorption (P = 0.041). Conclusions: Emdogain gel used on the surface of transplanted teeth improves the occurrence of complete healing and reduces root resorption.
ABSTRACT
Aims And Objectives: To evaluate the success rate of auto transplanted third molars. To consider the possibility of auto transplantation, in selected cases, as a good alternative to prosthodontic rehabilitation including implant insertion, when closing a gap in the dental arch. Materials And Methods: Ten patients of either sex with the age group between 15 to 19 years with developing third molars, having half or two third root development and simultaneously having first molar area in which the tooth is grossly destructed or heavily filled or which is indicated for extraction; with adequate bone support and which is free from acute infection and chronic inflammation are considered. The surgical procedure is performed under local anesthesia with strict aseptic measures. The transplanted tooth is stabilised with an open cap splint with coverage on the occlusal surface of the transplanted tooth. The splint is then secured in place by interdental wiring. Results: Out of 10 cases, clinically, all cases showed marked improvement and radiographically, one case exhibited replacement resorbtion and nine cases showed signs of continued root development but not much of root development was appreciable within one year duration. No abnormality was detected in relation to pulpal, periapical, periodontal conditions. All patients were able to carry out normal function over the transplanted area. Conclusion: Auto transplantation of teeth, when properly indicated and technically carried out with great care, will provide excellent results. It is worth consideration in any case in which there is suitable donor tooth available and so, in selected cases, this method should be preferred over prosthetic rehabilitation.