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Tooth transplant

Huseyin Burak Kutlu, Samir Goyushov, Bünyamin Calisan, Tolga F Tözüm
OBJECTIVE: Loss of teeth frequently results in compound horizontal and vertical alveolar bone defects. An appropriate bone structure is the key for implant placement and bony support of soft tissues. Advanced bone augmentation techniques are required for the reconstruction of these defects. This report will present a new bone block grafting technique with 12-month follow-up. METHOD: The seedling technique was used to augment the alveolar bone 3-dimensionally with autologous bone block and an osseointegrated implant in a 2-stage procedure...
March 13, 2018: Journal of Craniofacial Surgery
Sujin Yang, Bock-Young Jung, Nan-Sim Pang
OBJECTIVES: This retrospective study aimed to investigate the clinical outcome of tooth autotransplantation and related prognostic factors. MATERIALS AND METHODS: Eighty-two cases of transplanted teeth from March 2006 to December 2016 were retrospectively investigated by medical records and radiographs. The clinical outcomes of transplanted teeth, which included tooth survival, inflammatory root resorption (IRR), ankylosis, and marginal bone loss (MBL), and the related prognostic factors were assessed via survival analysis...
March 10, 2018: Clinical Oral Investigations
Noëmi M C De Roo, Laurent A M Thierens, Liesbeth Temmerman, Guy A M De Pauw
Prior to cryopreservation, a tooth is transported from a contaminated oral environment to the tooth bank. Our objective was to identify all studies reporting or investigating a transport protocol prior to the cryopreservation of teeth, in terms of decontamination of the subjects. The systematic literature search (1970-2017) was based on MEDLINE via PubMed, Web of Science and the Cochrane Library. The reference lists of the included studies and the Science Citation Index were used for hand searching (snowballing)...
March 7, 2018: Cell and Tissue Banking
Kaoru Washio, Yusuke Tsutsumi, Yuka Tsumanuma, Kosei Yano, Supreda Suphanantachat Srithanyarat, Ryo Takagi, Shizuko Ichinose, Walter Meinzer, Masayuki Yamato, Teruo Okano, Takao Hanawa, Isao Ishikawa
Osseointegrated implants have been recognized as being very reliable and having long term predictability. However, host-defense mechanisms against infection have been known to be impaired around a dental implant because of the lack of a periodontal ligament (PDL). The purpose of our experimental design was to produce cementum and PDL on the implant surface adopting cell sheet technology. To this aim we used PDL-derived cells, which contain multi-potential stem cells, as the cell source and we cultured them on an implant material constituted of commercially pure titanium treated with acid etching, blasting, and a calcium phosphate (CaP) coating to improve cell attachment...
March 1, 2018: Tissue Engineering. Part A
Z Malik, M Alexiou, B Hallgrimsson, A N Economides, H U Luder, D Graf
Formation of highly organized dental hard tissues is a complex process involving sequential and ordered deposition of an extracellular scaffold, followed by its mineralization. Odontoblast and ameloblast differentiation involves reciprocal and sequential epithelial-mesenchymal interactions. Similar to early tooth development, various Bmps are expressed during this process, although their functions have not been explored in detail. Here, we investigated the role of odontoblast-derived Bmp2 for tooth mineralization using Bmp2 conditional knockout mice...
February 1, 2018: Journal of Dental Research
Keunhee Kim, Hee-Seung Choi, Nan-Sim Pang
This report presents two cases of tooth autotransplantation using cone-beam computed tomography (CBCT), the three-dimensional (3D) simulation dental planning software and a computer-aided rapid prototyping (CARP) model. Two hopeless teeth of adult patients were replaced as their third molar teeth. Before deciding the autotransplantation, diagnostic CBCT images were acquired and imported to SimPlant software. The SimPlant dental program was used for surgical simulation prior to autotransplantation, which created 3D images of the available donor teeth and recipient site tooth and superimposed the images to display their morphological similarity...
February 16, 2018: Australian Endodontic Journal: the Journal of the Australian Society of Endodontology Inc
Chengye Che, Jie Liu, Jianjun Yang, Lei Ma, Na Bai, Qian Zhang
BACKGROUND AND PURPOSE: Peri-implantitis is caused by a cascade of host and microbial factors leading to an oral inflammatory disease. The inflammation proliferates into supporting tissues surrounding implants and may finally lead to a complete loss of osseointegration. Being a phosphorylated glycoprotein secreted by immunocompetent cells, osteopontin (OPN) is involved in the differentiation of odontoblast-like cells during pulpal healing following tooth transplantation and the secretion of type I collagen in reparative dentin...
February 15, 2018: Clinical Implant Dentistry and related Research
Vandana Kharidhi Laxman, Rajendra Gururao Desai
Background: Stem cells are unspecialized, multipotent cells which can differentiate into different cell types. The human periodontal ligament encloses subpopulation of Periodontal Ligament Stem Cells (PDLSCs) which are able to regenerate the periodontium by differentiating into various cells of PDL. Literature have shown the promising results of periodontal regeneration by exvivo cultured transplantation of PDLSCs into the osseous defects. Methods: Based on current literature on use of ex vivo culture and associated problems, a novel technique is being presented , Stem cell application in periodontal regeneration (SAI-PRT) which uses autologous PDLSCs along with its niche adhering to extracted tooth root for direct application using gelatin sponge as scaffold in regeneration of intrabony periodontal defect bypassing ex-vivo culture...
March 2017: Journal of Indian Society of Periodontology
Mounzer Assad, Maysaa Alkhaled, Mohammed N Alhajj
Background: Oroantral fistula (OAF) is considered a frequent complication in dental practice. Many surgical techniques/methods have been proposed to close it. The aim of this study was to evaluate the auto-transplantation of upper third molar for closing OAF. Materials and Methods: Twenty patients participated in this study aged between 20 and 40 years old. The OAF was closed by auto-transplantation of upper third molar placed directly in the socket of the extracted tooth...
March 2018: Journal of Maxillofacial and Oral Surgery
Naoshi Takeuchi, Yoshinori Shirakata, Yukiya Shinohara, Kotaro Sena, Kazuyuki Noguchi
Purpose: Furcation involvement in the molars is difficult to treat, and has been recognized as a risk factor for tooth loss. Although periodontal regenerative therapies, including guided tissue regeneration and various types of bone grafts, have been applied to furcation defects, the effects of these treatments are limited, especially in large class III furcation defects. The purpose of this pilot study was to investigate the effect of reciprocal autologous root transplantation on periodontal wound healing and regeneration in class III furcation defects in dogs...
December 2017: Journal of Periodontal & Implant Science
Haruyoshi Yamaza, Erika Tomoda, Soichiro Sonoda, Kazuaki Nonaka, Toshio Kukita, Takayoshi Yamaza
OBJECTIVE: Hyperbilirubinemia in patients with biliary atresia causes deciduous tooth injuries such as green pigmentation and dentin hypoplasia. In patients with biliary atresia who received liver transplantation, tooth structure appears to be recovered radiographically. Nevertheless, little is known about cellular mechanisms underlying bilirubin-induced damage and suppression of deciduous tooth formation. In this study, we examined the effects of bilirubin in stem cells from human exfoliated deciduous teeth (SHED) in vitro...
January 9, 2018: Oral Diseases
Rafaela de Oliveira Torres, Andréa Vaz Braga Pintor, Fábio Ribeiro Guedes, Liana Bastos Freitas-Fernandes, Anneliese Lopes Barth, Dafne Dain Gandelman Horovitz, Ivete Pomarico Ribeiro de Souza
We described herein the oral and craniofacial features of a 7-year-old boy, diagnosed in utero with mucopolysaccharidosis II (MPS II), who was treated with hematopoietic stem cell transplantation (HSCT) at 70 days of age. The main oral clinical findings were the following: macroglossia, posterior cross-bite, crowding, pointed cuspid teeth, delayed tooth eruption, retained primary teeth, and enamel hypoplasia. The image examination showed: retention eruption, posterior primary teeth with short roots, absence of some permanent teeth, and stretching of the stylohyoid processes bilaterally...
January 4, 2018: Special Care in Dentistry
Xiaofei Zhu, Jie Liu, Zongdong Yu, Chao-An Chen, Hacer Aksel, Adham A Azim, George T-J Huang
The goal of this study was to establish mini-swine as a large animal model for stem cell-based pulp regeneration studies. Swine dental pulp stem cells (sDPSCs) were isolated from mini-swine and characterized in vitro. For in vivo studies, we first employed both ectopic and semi-orthotopic study models using severe combined immunodeficiency mice. One is hydroxyapatite-tricalcium phosphate (HA/TCP) model for pulp-dentin complex formation, and the other is tooth fragment model for complete pulp regeneration with new dentin depositing along the canal walls...
February 2018: Tissue Engineering. Part C, Methods
Haozhe Tang, Zhengyan Shen, Minhong Hou, Ligeng Wu
BACKGROUND: We 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. METHODS: Twenty-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...
December 28, 2017: BMC Oral Health
V Thumbigere Math, P Rebouças, P A Giovani, R M Puppin-Rontani, R Casarin, L Martins, L Wang, K Krzewski, W J Introne, M J Somerman, F H Nociti, K R Kantovitz
Chédiak-Higashi syndrome (CHS), a rare autosomal recessive disorder caused by mutations in the lysosomal trafficking regulator gene (LYST), is associated with aggressive periodontitis. It is suggested that LYST mutations affect the toll-like receptor (TLR)-mediated immunoinflammatory response, leading to frequent infections. This study sought to determine the periodontal status of patients with classic (severe) and atypical (milder) forms of CHS and the immunoregulatory functions of gingival fibroblasts in CHS patients...
January 2018: JDR Clinical and Translational Research
Adriana Furtado de Macedo, Claudio Costa, Regina Helena Guedes da Motta Mattar, Ramiro Anthero de Azevedo
OBJECTIVE: To report a case of severe dystrophic calcification in maxillary sinus of a child with liver transplantation and dental organs pigmented by hyperbilirubinemia. CASE DESCRIPTION: female patient, 12 years old, with liver transplantation performed at the age of 7 due to extrahepatic biliary atresia (EHBA). The patient was receiving the immunosuppressant tacrolimus (2 mg daily). Intraoral clinical exam showed tooth green pigmentation by bilirubin. Cone-beam volumetric computed tomography (CT) was performed to verify radiographic density of pigmented dental elements...
November 17, 2017: Revista Paulista de Pediatria: Orgão Oficial da Sociedade de Pediatria de São Paulo
Zhnagrui Liang, Satoshi Kawano, Wei Chen, Moein S Sadrkhani, Chaehwan Lee, Euiseong Kim, Alireza Moshaverinia, Reuben H Kim, Mo Kang
INTRODUCTION: Pulp tissue regeneration is becoming a reality after discovery of mesenchymal stem cells (MSCs) residing in the pulp tissues through various clinical innovations, although MSC transplantation into the pulp space has met with challenges of in vitro cell expansion and cultures. As a way to circumvent the regulatory and technical complexities of in vitro MSC culture, we investigated the use of minced pulp tissues as a source of pulpal MSCs for tissue regeneration. METHODS: We characterized the phenotype of cells explanted from minced pulp (MP), namely MP-derived MSCs (MP-MSCs), compared with dental pulp stem cells (DPSCs) established from pulp tissues by enzyme digestion...
October 24, 2017: Journal of Endodontics
Maolin Zhang, Fei Jiang, Xiaochen Zhang, Shaoyi Wang, Yuqin Jin, Wenjie Zhang, Xinquan Jiang
Dentin-pulp complex regeneration is a promising alternative treatment for the irreversible pulpitis caused by tooth trauma or dental caries. This process mainly relies on the recruitment of endogenous or the transplanted dental pulp stem cells (DPSCs) to guide dentin-pulp tissue formation. Platelet-derived growth factor (PDGF), a well-known potent mitogenic, angiogenic, and chemoattractive agent, has been widely used in tissue regeneration. However, the mechanisms underlying the therapeutic effects of PDGF on dentin-pulp complex regeneration are still unclear...
December 2017: Stem Cells Translational Medicine
Chung-Min Kang, Seung Min Hahn, Hyo Sun Kim, Chuhl Joo Lyu, Jae-Ho Lee, Jinae Lee, Jung Woo Han
Purpose: Although studies regarding dental developmental disturbances after childhood cancer treatment have increased, they have many limitations. Studies analyzing the significance of independent clinical risk factors with regard to the dental health status are also rare. We aimed to investigate the risk factors for dental developmental disturbances, particularly severe disturbances, in childhood cancer survivors (CCS). Materials and Methods: Oral examinations and retrospective reviews of medical and panoramic radiographs were performed for 196 CCS (mean age, 15...
October 10, 2017: Cancer Research and Treatment: Official Journal of Korean Cancer Association
Java Walladbegi, Martin Gellerstedt, Anncarin Svanberg, Mats Jontell
PURPOSE: Most of the patients who receive myeloablative therapy prior to stem cell transplantation develop oral mucositis (OM). This adverse reaction manifests as oral mucosal erythema and ulcerations and may require high doses of morphine for pain alleviation. OM may also interfere with food intake and result in weight loss, a need for parenteral nutrition, and impaired quality of life. To date, there have been very few studies of evidence-based interventions for the prevention of OM...
November 2017: Cancer Chemotherapy and Pharmacology
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