Autotransplantation Of Teeth Research Articles

Immediate replacement of nonrestorable molar with impacted third molar: An experimental study

Background: Autogenous transplantation of impacted third molars in place of nonsalvageable first or second molars can prove to be a good option. Hence, the present study evaluated the replacement of maxillary or mandibular nonrestorable molars with immediate autotransplantation of impacted third molar. Materials and Methods: Forty-two impacted third molars having complete root formation were extracted and autotransplanted into the extraction socket of nonrestorable first or second molars on 42 participants in the age range of 22–50 years. Follow-up period for the study was of 1 year at regular intervals. Participants were analyzed for pain, tooth mobility, ankylosis, and root resorption at follow-up intervals. Data obtained were analyzed using SPSS software. Results: Out of the 42 participants, 9 participants required extraction of autotransplanted tooth due to resorption and Grade 2 mobility. One tooth showed ankylosis. Success rate of the autotransplantation was 78%. Conclusion: It was concluded that immediate autotransplantation is a successful and more economical tooth replacement option provided that proper case selection and procedure should be followed.

Autotransplantation of teeth to the reconstructed alveolus in unilateral cleft lip and palate patients

Congenitally missing or malformed anterior maxillary teeth are a frequent finding in cleft patients, the maxillary lateral incisor being the most commonly affected tooth. This has a bearing on occlusion, function, speech and aesthetics. Conventional treatment options involve both prosthetic and surgical solutions in conjunction with orthodontic therapy, however, not without limitations.

Autotransplantation of mature and immature third molars in 23 Chinese patients: a clinical and radiological follow-up study

BackgroundWe investigated the clinical and radiographic outcomes of autotransplanted teeth over a follow-up period of 2 to 8 years, and summarize the findings of other relevant studies with regard to the primary factors that influence a good prognosis in such patients.MethodsTwenty-three patients (6 men, 17 women) who attended Tanggu Stomatological Hospital, Tianjin, China, from 2008 through 2013, were included in the study. These patients presented with a variety of dental problems, including tooth loss, residual crowns, missing first or second molars, dental trauma, tooth fracture, and unrestored teeth. A total of 26 third molars, including 2 immature molars, were autotransplanted in these patients. The success rate of autotransplantation was assessed on the basis of clinical and radiographic outcomes after follow-up periods ranging from 2 to 8 years.ResultsClinical examination revealed stability of all 26 transplanted teeth, with satisfactory masticatory function and no patient discomfort. Radiographic examination revealed normal periapical tissues and an intact lamina dura surrounding the tooth root, indicating adequate healing of periodontal tissues.ConclusionsAutotransplantation achieved good results in the Chinese sample population investigated, and was associated with an excellent prognosis. Rigorous case selection, adequate protection of the periodontal ligament, and proper oral hygiene contribute significantly to the long-term success of the procedure.

Contemporary Approach to Autotransplantation of Teeth with Complete Roots Using 3D-printing Technology

êµì •ì¹˜ë£Œì˜ ëª©ì ìœ¼ë¡œ, 또는 ë³´ì¡´ 불가능한 치아를 발거 후 치근 형성이 완료된 치아의 자가치아이식을 요구하는 경우가 ëŠ˜ì–´ë‚˜ê³ ìžˆì§€ë§Œ 미완성 치근 형성 치아를 이식하는 경우에 비하여 치근 형성이 완료된 치아를 이식하는 경우 ìƒì¡´ë¥ ë° ì„±ê³µë¥ ì´ 낮음이 ë³´ê³ ë˜ê³ ìžˆë‹¤.ì´ì „ì˜ 자가치아이식에서는 공여치와 수여부만을 재현하는 모델만이 사용된 반면에 현재는 불필요한 ê³¨ì‚­ì œì™€ ìˆ ì‹ 시간을 감소시켜주는 ì™¸ê³¼ì  가이드 í œí”Œë ˆì´íŠ¸ë“¤ì„ 3D í”„ë¦°íŒ ê¸°ìˆ ì„ 통하여 ì œìž‘, ìˆ ì‹ì— ì¶”ê°€ì ìœ¼ë¡œ 이용함으로써 이식시 ì ì ˆí•œ 방향와 깊이로 수여부를 í˜•ì„±í• ìˆ˜ 있으며 ìˆ ì‹ì‹œê°„ë„ 감소시켜 자가치아이식의 ì„±ê³µë¥ ë° ìƒì¡´ë¥ ì„ 향상시킬 수 ìžˆë‹¤ê³ í• ìˆ˜ 있다.본 케이스는 치근 형성이 완료된 치아를 ì„ ì²œì„± 결손 부위에 자가이식한 케이스로 3D í”„ë¦°íŒ ê¸°ìˆ ì„ 이용하여 공여치와 수여부 모형 모델 및 ì™¸ê³¼ì  가이드 í œí”Œë ˆì´íŠ¸ë“¤ì„ ì œìž‘í•¨ìœ¼ë¡œì¨ ìˆ ì‹ì˜ ì„±ê³µë¥ ê³¼ ì•ˆì •ì„±ì„ 높일 수 ìžˆì—ˆê³ ì´ì‹ì¹˜ì˜ 양호한 ì¹˜ìœ ê²°ê³¼ë¥¼ 이끌어냈다.

Autotransplantation of teeth to the anterior maxilla: A systematic review of survival and success, aesthetic presentation and patient-reported outcome.

Autotransplantation of teeth to the anterior maxilla may be indicated after trauma or in patients with congenitally missing teeth. The aim of this systematic review was to report the current evidence concerning survival and success rate, aesthetic outcome, and patient-reported outcome of autotransplanted teeth to the anterior maxilla. A MEDLINE search followed by an additional hand search was performed to identify relevant literature. All levels of evidence except case reports were considered. Any publication reporting on 10 or more autotransplanted teeth to the anterior maxilla, and written in English were eligible for this systematic review. The systematic search identified 95 abstracts. Thirty-seven full-text articles were evaluated of which 17 could finally be included. Data on survival and success rate of the transplants could be extracted from 11 studies. Survival rates ranged between 93% and 100% (weighted mean: 96.7%, median: 100%) after 9months to 22years of observation (median: 8.75years). No consensus regarding definition of success criteria of the transplants could be found in the literature. Two and four studies contained data on aesthetic and patient-reported outcomes, respectively. In general, they reported favourable aesthetic results and high patient satisfaction. The current available evidence suggests a high survival rate after autotransplantation of teeth to the anterior maxilla. However, the level of evidence is low. Limited data on aesthetic and patient-reported outcomes warrant additional research in this field.

Tooth autotransplantation as an alternative to dental procedure or replace missing teeth. Cases series

Tooth autotransplantation as an alternative to dental procedure or replace missing teeth. Cases series

The prognosis of autotransplanted tooth on molar region: 5 years follow up cases

Other SectionsAbstractIntroductionCase ReportDiscussionAcknowledgementsConflict of InterestORCIDFiguresReferences

Tooth Autotransplantation with a Figure-of-Eight Wire Technique

Tooth autotransplantation is a procedure commonly performed in young patients to replace an edentulous site with an “autograft” (donor tooth). Long term survival rates range from 75.3% to 91%.1 The usual technique used is to secure the transplanted tooth by splinting it to the adjacent teeth with orthodontic wire attached with composite resin and stabilized by sutures (silk or polyglactin 910).2 Placement of a composite splint is time consuming, technique-sensitive, and requires a dry surgical field. Sutures often degrade or tear prematurely during normal function and mastication, prior to an adequate healing time for stabilization of the transplant. The purpose of this study is to determine the outcomes of third molar autotransplantation at the time of first molar extraction using a single figure-of-eight orthodontic ligature wire around the adjacent teeth and superior to the occlusal surface of the transplant.

The prognosis of autotransplanted tooth on molar region: 5 years follow up cases

The prognosis of autotransplanted tooth on molar region: 5 years follow up cases

Autotransplantation of a mandibular third molar: A case report

Tooth autotransplantation defines as transition of one tooth from one position to another, in same individual. It is a biological procedure in which teeth have the potential to induce alveolar bone growth. It can be applied in patients before adolescence growth is finished. It significantly reduces time and cost compared to implants. Healing rapidly occurs and function is regained almost immediately. Our case was a 15-year-old male that his left mandibular third molar transplanted to the second molar sight after extraction of second molar because of unrestorable crown. During 9 month follow up transplanted tooth was asymptomatic, functional and responsive to sensibility tests. (Cold test, EPT).

Periodontal tactile sensation and occlusal loading condition of autotransplanted teeth: A retrospective pilot study

PurposeThe objectives of this retrospective pilot study were: (1) to examine the occlusal properties (periodontal tactile sensation, occlusal force support ability, dynamic tooth mobility, occlusal force, contact area, preferred chewing side and main occluding area) of autotransplanted teeth with no clinical complications after transplantation (postoperative periods from 1 to 7 years). MethodsThree groups were formed from 20 subjects (23 teeth in each group): autotransplanted teeth (ATP group), teeth contralateral to the recipient site (control group A), and teeth contralateral to the donor site (control group B). ResultsThe tactile detection threshold of the ATP group was higher than both the control groups, and the individual occlusal force was significantly lower than control group A. The occlusal force ratio and the occlusal contact area ratio were significantly lower in the ATP group than in both control groups, while the mobility was similar in all groups. Eight out of 20 subjects chose the autotransplanted teeth side as the preferred chewing side. Especially when the recipient site was the first molar, the ATP of these subjects were included in the main occluding area. The pocket depth of the three groups was within the normal range. ConclusionsThese results demonstrate that teeth autotransplantation can achieve a mastication efficiency and periodontal condition similar to normal teeth; however, without proper healing, the periodontal sensation of autotransplanted teeth may be inferior to that of normal teeth (<250).

Outcomes and prognostic factors that influence the success of tooth autotransplantation in children and adolescents.

Tooth autotransplantation has been advocated for replacement of missing teeth or teeth that are unsuitable for restoration. The aim of this study was to investigate the outcomes and prognostic factors that influenced the success of tooth transplantation in a paediatric population. Data were extracted from the records of 75 patients (89 teeth). Demographic and prognostic factors were recorded and analysed for the clinical and radiographic outcomes for periodontal ligament (PDL) and pulp healing of transplanted teeth. The mean age at transplant was 13.2years, and the mean follow-up observation period was 2.6±1.8years with a range of 12.0months to 9.9years. The main reason for transplantation was to replace upper central incisors lost or missing due to dental trauma, hypodontia and dilaceration. Of the 45 teeth that were monitored for pulp revascularization, 75.6% showed clinical and radiographic signs of pulp healing and 24.4% showed signs of pulp necrosis and infection. Pulp healing was significantly related to the stage of root development of the transplant. Favourable PDL healing was observed in 87.6% of the transplants, while 13.5% showed signs of replacement resorption. PDL healing was significantly related to the stage of root formation of the transplanted tooth at the time of the surgery, the ease of handling and placement of the tooth, and the status of the alveolar bone at the recipient site at the time of the surgery. Overall success of tooth transplantation was 87.6%, and the survival rate was 94.4%. Tooth transplantation carried out in children and adolescents demonstrated high success and survival, with the stage of root development influencing both the pulp and PDL healing of the transplanted teeth.

Survival rate of autotransplanted teeth after 5 years – A retrospective cohort study

BackgroundAutotransplantation of teeth (TX) is a predictable treatment option, although this type of therapy is often overlooked compared to other types of restorations. PurposeAs current literature contains few long-term studies concerning the outcome of autotransplanted immature molars, the aim was to evaluate results after a follow-up period of 5 years. Material and methodsThis retrospective study enrolled all patients treated with immature autotransplanted molars after a follow-up period of 5 years. In order to ensure comparable results, survival rate was investigated as well as clinical and radiological parameters. Contralateral teeth (TC) were used as controls for further assessments and for ensuring comparable future results. Results52 patients with 66 TX were examined. Mean age at the time of surgery was 19.64 years. Tooth survival rate after 5 years was 89.39%. The results for parameters such as PPD, BOP, mobility, dental caries, periapical pathologies and endodontic treatments showed no differences. In contrast, dental restorations (p < 0.001), occlusal contacts (p = 0.003) and sensitivity (p < 0.001) differed significantly between TX and TC. ConclusionsThe current findings clearly confirm that TX is an effective alternative treatment option to fixed prosthodontic restorations and dental implants, and provides for results equivalent to those with the patients' natural teeth.

Do Autotransplanted Teeth Require Elective Root Canal Therapy? A Long-Term Follow-Up Case Series

To determine the long-term survival and outcomes of 252 autotransplanted teeth with a novel root canal therapy (RCT) and follow-up protocol and to establish whether elective RCT after autotransplantation is routinely required for teeth with complete root formation. A retrospective analysis of 209 patients 10 to 58years old, with a total of 252 autotransplants was carried out with a minimum observational period of 1year and a maximum period of 29years. Patients were reviewed at specified intervals. Only the teeth showing any radiographic or clinical signs of internal resorption (IR), external resorption (ER), or pulpal necrosis underwent RCT. A failure was considered the loss or extraction of the autotransplanted tooth. Ten of the 252 autotransplants constituted failures, with 249, 190, 155, 97, 70, and 35 teeth surviving at 1, 2, 3, 5, 7, and 10years, respectively; the remainder were lost to follow-up. Eighteen percent of teeth (n=46) showed radiographic signs of IR, ER, and apical pathology (AP). Most cases of ER were observed by 3years (18 of 28 teeth) and then at 5 to -8years. Only 3 teeth showed signs of IR, which were observed within 5years. Most cases of AP were observed within the first year (8 of 15 teeth) and then at 3 to 6years. Five teeth showed signs of pulp obliteration or sclerosis and did not require RCT, with a maximum period of 16years after identification of sclerosis. Retrospective analysis of the data showed that 184 autotransplanted teeth had complete root formation and 68 had incomplete root formation at the time of autotransplantation. Of the teeth that were followed for at least 5years, 59.3% had complete root formation with no signs of pathology and required no RCT. Despite the limitation of this long-term study of patients lost to follow-up, the results suggest that, with close monitoring, some autotransplanted teeth with complete root formation that do not undergo RCT could have the potential for revascularization. Hence, one could reconsider the protocol of routinely providing RCT after autotransplantation. Future long-term studies will be beneficial to assess the vascularity of autotransplanted teeth using Doppler flowmetry with a larger cohort of patients.

Accuracy of Computer-Assisted Template-Guided Autotransplantation of Teeth With Custom Three-Dimensional Designed/Printed Surgical Tooling: A Cadaveric Study

The aim of the present cadaveric study was to assess the accuracy of computer-assisted template-guided autotransplantation of teeth with custom 3-dimensional (3D) designed/printed surgical tooling. Ten partially edentulous human mandibular cadavers were scanned using a cone-beam computed tomography (CBCT) system and an intraoral scanning system. The 3D data of these cadavers were imported to specialized software and used to analyze the region of the recipient sites, and the donor teeth were selected. Subsequently, congruent to the donor teeth, custom surgical tooling and surgical-guided templates were designed and 3D printed. The guided osteotomies were performed and the donor teeth transplanted. To evaluate the planned donor teeth positions compared with the transplanted donor teeth positions, the mandibles were scanned again using the CBCT system, and software matching was applied to measure the accuracy of the procedure. The mean angular deflection of the transplanted donor teeth with the planned donor teeth positions was 5.6 ± 5.4°. Comparing the 3D positions of the shoulders, a mean deviation of 3.15±1.16mm and a mean apical deviation of 2.61 ± 0.78mm were found. The described method of computer-assisted template-guided autotransplantation of teeth with custom 3D designed/printed surgical tooling could potentially provide a relatively accurate alternative for the currently available treatment approaches. Further research should focus on improving the accuracy of this technique and evaluating the clinical success and advantages of this method.

Autotransplantation of teeth - a viable alternative to oral rehabilitation

O autotransplante dentario consiste em uma tecnica caracterizada pela substituicao de um elemento perdido ou ausente por um elemento transplantado, geralmente um terceiro molar, para um alveolo pre-existente ou criado cirurgicamente. E uma tecnica cirurgica relativamente simples, associada a taxas de sucesso na ordem dos 90%. No entanto, pode ser influenciada por fatores como a idade do paciente, fase de desenvolvimento radicular e erupcao dentaria, entre outros. Ainda com as complicacoes possiveis dessa tecnica, as vantagens economicas e a otimizacao do tempo cirurgico tornam este procedimento uma opcao de tratamento viavel para algumas situacoes de perdas dentarias. O presente trabalho tem por objetivo relatar um autotransplante dentario realizado com sucesso em um paciente de 17 anos de idade que se encontra em acompanhamento de 2 anos. Artigo aceito em: 02/04/2017 Publicado em: 23/05/2017

Tooth Auto-transplantation: An Alternative Treatment

Auto-transplantation is the repositioning of an autogenously erupted, partially erupted, or unerupted tooth from one site to another in the same individual. The purpose of this case report is to describe the auto-transplantation of the mandibular third molars as an alternative means of replacing second molars requiring extraction. An orthopantomogram revealed horizontal impaction of teeth #37 and 47 and mesio-angular impaction of teeth #38 and 48. Cone beam computed tomography revealed that the roots of #37 and 47 were in close proximity to the inferior alveolar canal bilaterally. As atraumatic and complete removal of these two teeth was not possible, #38 and 48 were chosen as the donor teeth instead. The procedure was carried out under general anesthesia. Teeth #38 and 48 were extracted atraumatically; teeth #37 and 47 were pulled out by sectioning and transplant sites prepared. Teeth #38 and 48 were transplanted to the sites vacated by teeth #37 and 47, respectively. Endodontic treatment of teeth #38 and 48 was completed within 1 month following transplantation. Both clinical and radiographic outcomes were considered satisfactory at 1 year postoperatively. Bone healing was observed around the roots of teeth #38 and 48. In conclusion, although auto-transplantation is not very common in general dental practice, we believe that it offers a clinically and economically viable alternative to other complicated prosthetic and dental implant treatments.

As Low Dose as Sufficient Quality: Optimization of Cone-beam Computed Tomographic Scanning Protocol for Tooth Autotransplantation Planning and Follow-up in Children

IntroductionTooth autotransplantation (TAT) offers a viable biological approach to tooth replacement in children. To enhance the outcome predictability of the TAT procedure, a cone-beam computed tomographic (CBCT)-based surgical planning and transfer technique has been developed. The aim of this study was to optimize the CBCT scanning protocol to achieve a dose as low as possible and to maintain sufficient image quality. MethodsA sectional head phantom (SK150; The Phantom Laboratory, Salem, NY) was scanned using 18 exposure protocols in 3 different CBCT machines: 3D Accuitomo 170 (Morita, Kyoto, Japan), ProMax 3D MAX (Planmeca, Helsinki, Finland), and NewTom VGI EVO (QR Verona, Verona, Italy). The effective dose (ED) was calculated using Monte Carlo simulation and pediatric voxel phantoms (5- and 8-year-old males and a 12-year-old female). Image quality was assessed by comparing segmented teeth volumes, evaluation of the visibility of the lamina dura, and morphologic surface analysis of 3-dimensional models. A general linear mixed model was fit to combine image quality parameters and radiation effective dose for each protocol in order to rank and compare the protocols examined in the study. ResultsThe ED for the preoperative scan can be reduced to the range of 74.6–157.9 μSv, with ProMax with ultra–low-dose high-definition reconstruction (Planmeca) 100 × 90 scoring the highest. The ED for the postoperative scan can be reduced to the range of 24.2–41.5 μSv with ProMax with ultra–low-dose normal-dose reconstruction 50 × 55 and NewTom 50 × 50 with the standard mode scoring the highest. ConclusionsA considerable reduction in the pediatric ED can be achieved while maintaining sufficient image quality for tooth autotransplantation planning and follow-up using the dose optimization protocols.

Auto-transplantation of teeth: Our Experience

Background &amp; Objectives: To evaluate success rate of auto-transplantation of teeth with immature and mature root apex.Materials &amp; Methods: Fifteen consecutively auto-transplanted teeth ( six with immature apex and nine with mature apex ) were followed up for a mean duration of 8.6 months and assessed for post transplant mobility, root resorption, root growth and pain. The transplanted teeth were assessed clinically and Intraoral periapical radiographs (IOPAR) were taken every three months.Results: Overall success rate was 73.3%. Higher success rate was observed for teeth with immature apex as compared to teeth with mature apex.Conclusion: Auto-transplantation can be used as reliable method for replacement of missing teeth if proper case selection and surgical protocol is followed.

Guided Autotransplantation of Teeth: A Novel Method Using Virtually Planned 3-dimensional Templates

IntroductionThe aim of this study was to introduce an innovative method for autotransplantation of teeth using 3-dimensional (3D) surgical templates for guided osteotomy preparation and donor tooth placement. MethodsThis report describes autotransplantation of immature premolars as treatment of an 11-year-old boy having suffered severe trauma with avulsion of permanent maxillary incisors. This approach uses modified methods from guided implant surgery by superimposition of Digital Imaging and Communications in Medicine files and 3D data sets of the jaws in order to predesign 3D printed templates with the aid of a fully digital workflow. ResultsThe intervention in this complex case could successfully be accomplished by performing preplanned virtual transplantations with guided osteotomies to prevent bone loss and ensure accurate donor teeth placement in new recipient sites. Functional and esthetic restoration could be achieved by modifying methods used in guided implant surgery and prosthodontic rehabilitation. The 1-year follow-up showed vital natural teeth with physiological clinical and radiologic parameters. ConclusionsThis innovative approach uses the latest diagnostic methods and techniques of guided implant surgery, enabling the planning and production of 3D printed surgical templates. These accurate virtually predesigned surgical templates could facilitate autotransplantation in the future by full implementation of recommended guidelines, ensuring an atraumatic surgical protocol.