Letteratura scientifica selezionata sul tema "Periodontal ligament"

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Articoli di riviste sul tema "Periodontal ligament"

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Bahirrah, Siti, Lidya Irani Nainggolan, and Philiph Pasaribu. "Effect of Vitamin C on Tooth Movement in Terms of Periodontal Ligament Space in Guinea Pigs." Dentika Dental Journal 22, no. 2 (2019): 39–43. http://dx.doi.org/10.32734/dentika.v22i2.1677.

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Abstract (sommario):
Periodontal ligaments are one of the supporting tissues of teeth that undergo remodeling during the tooth movement process. Vitamin C deficiency inhibits the regeneration of collagen fibers, which are important in tissue remodeling that affects the widening of the periodontal ligament space during the process of tooth movement. The widening of periodontal ligament space can be seen by taking radiographic photos. The purpose of this study was to determine the width of the periodontal ligament space of guinea pigs by administering vitamin C, without vitamin C, and the differences between the two
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Saito, A., E. Saito, M. Kawanami, and A. Shimada. "Healing in Transplanted Teeth with Periodontal Ligament Cultured In Vitro." Cell Transplantation 12, no. 5 (2003): 519–25. http://dx.doi.org/10.3727/000000003108747082.

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Regeneration of connective tissue attachment is the ultimate goal of periodontal therapy. It has been suggested that periodontal ligament cells possess the potential to create new connective tissue attachment. However, as cells from gingiva and alveolar bone occupy the root surface during initial wound healing, population by periodontal ligament cells is limited in vivo. We have been developing a new periodontal regeneration technique using in vitro tissue culture of periodontal ligament remaining on a periodontally involved root. The purpose of this study was to examine the periodontal healin
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Sena, K., Y. Morotome, O. Baba, T. Terashima, Y. Takano, and I. Ishikawa. "Gene Expression of Growth Differentiation Factors in the Developing Periodontium of Rat Molars." Journal of Dental Research 82, no. 3 (2003): 166–71. http://dx.doi.org/10.1177/154405910308200304.

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Growth and differentiation factors (GDF) 5, 6, and 7 are known to play roles in tendon and ligament formation, and are therefore probably involved in the formation of periodontal ligament. In this study, we sought to determine temporal and spatial expression of GDF-5, -6, and -7 mRNA in developing periodontal tissue of rat molars using in situ hybridization. GDF gene expression in the periodontal ligament was first detected in cells associated with the initial process of periodontal ligament fiber bundle formation. Gene signals were also detected in cells located along the alveolar bone and ce
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Gopinathan, Gokul, Xianghong Luan, and Thomas G. H. Diekwisch. "Epigenetic Repression of RUNX2 and OSX Promoters Controls the Nonmineralized State of the Periodontal Ligament." Genes 14, no. 1 (2023): 201. http://dx.doi.org/10.3390/genes14010201.

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The nonmineralized state of the mammalian periodontal ligament is one of the hallmarks of vertebrate evolution as it provides resilient and nontraumatic tooth anchorage for effective predation. Here we sought to determine how the chromatin state of key mineralization gene promoters contributes to the nonmineralized periodontal ligament in the midst of fully mineralized alveolar bone and cementum anchor tissues. In developing mouse periodontal tissues, RUNX2 was localized to alveolar bone–lining cells, while OSX was localized throughout the periodontal ligament’s soft tissue. Matching RT-PCR am
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Brahmanta, Arya, Sutjipto Sutjipto, and Ida Bagus Narmada. "Histological changes during orthodontic tooth movement due to hyperbaric oxygen therapy." Dental Journal (Majalah Kedokteran Gigi) 49, no. 2 (2017): 63. http://dx.doi.org/10.20473/j.djmkg.v49.i2.p63-66.

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Background: Mechanical force of orthodontics causes changes in periodontal ligament vascularization and blood flow, resulting in biochemical and cellular changes as well as changes in the contour of the alveolar bone and in the thickness of the periodontal ligaments. Hyperbaric oxygen (HBO) therapy is one of many solutions stimulating the growth of new blood vessels and increasing tissue oxygenation. Thus, HBO plays a role in recovery of periodontal ligament and osteoblasts. Purpose: This study aimed to determine the effects of HBO therapy for seven days on periodontal ligament size and osteob
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Bosiakov, Sergei, and Gennadi Mikhasev. "MATHEMATICAL MODEL FOR ANALYSIS OF TRANSLATIONAL DISPLACEMENTS OF TOOTH ROOT." Mathematical Modelling and Analysis 20, no. 4 (2015): 490–501. http://dx.doi.org/10.3846/13926292.2015.1068877.

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Analytical modeling of stress-strain state of a periodontal ligament in the case of the translational displacement of a tooth root was carried out. The tooth root was assumed as a rigid body. The boundary conditions corresponding to the translational displacement of the root and fixed external surface of the periodontal ligament in the dental alveolus were considered. The system of differential equations describing the periodontal ligament’s plane-strain state induced by the translational motion of the tooth were used as the governing equations. An analytical solution was found for the governi
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Aditya, Vangara, and Kharidhi Laxman Vandana. "Management of endo-perio lesion with autologous stem cell therapy." Saudi Journal of Oral Sciences 11, no. 1 (2024): 54–59. http://dx.doi.org/10.4103/sjoralsci.sjoralsci_79_23.

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Abstract (sommario):
The objective of periodontal therapy is the regeneration of tooth-supporting tissues. Various treatment modalities, such as the use of bone grafting materials, guided tissue regeneration, and delivery of enamel matrix derivatives or growth factors, are applied with large variability in regenerative outcomes. However, a case report was done by utilization of autologous dental pulp stem cells and periodontal ligament stem cell niches in the treatment of bone loss associated with endodontically and periodontally involved teeth. An autologous periodontal ligament stem cells niche adherent to the r
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Pinheiro, Gabriela Veloso Vieira da Silva, Robinson Sabino-Silva, Melissa Rodrigues de Araujo, et al. "Experimental Acute Sepsis Reduced Number of Osteocalcin Immunolabeled Cells in Periodontal Ligament." Brazilian Dental Journal 31, no. 2 (2020): 143–51. http://dx.doi.org/10.1590/0103-6440202003024.

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Abstract The aim of this study was to evaluate the effect of acute sepsis in the periodontal ligament, alveolar and furcation bone in absence of periodontitis induction through histological and immunohistochemical analyses. A septic rat model was established by cecal ligation and puncture (CLP). Twelve rats were randomly divided into CLP (n=6) and Sham (n=6) groups. The animals were euthanized at 24 h and hemimandibles were submitted to histomorfometric (bone matrix, collagenous fibers, fibroblasts, osteocytes, inflammatory cells, and blood vessels) and immunohistochemical (BMP-2/4, RANKL and
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Ashrafi, Mehran, Farzan Ghalichi, Behnam Mirzakouchaki, and Iman Zoljanahi Oskui. "Numerical simulation of hydro-mechanical coupling of periodontal ligament." Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine 234, no. 2 (2019): 171–78. http://dx.doi.org/10.1177/0954411919887071.

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Orthodontic tooth movement in the alveolar bone is due to the mechanical response of periodontal ligament to applied forces. Definition of a proper constitutive model of the periodontal ligament to investigate its response to orthodontic loading is required. For this purpose, a three-dimensional finite element model of incisor tooth, periodontal ligament, and bone was built utilizing the hydro-mechanical coupling theory. Tooth displacement in response to orthodontic loading was then investigated, and the effect of different mechanical behaviors assigned to the solid phase of the periodontal li
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Anneroth, G., K. H. Danielsson, H. Evers, K. G. Hedström, and Å. Nordenram. "Periodontal ligament injection." International Journal of Oral Surgery 14, no. 6 (1985): 538–43. http://dx.doi.org/10.1016/s0300-9785(85)80061-2.

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Tesi sul tema "Periodontal ligament"

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Silva, Guilherme Ferreira da [UNESP]. "Reação histológica do periodonto, subjacente à região de furca perfurada e preenchida com diferentes materiais, em molares de ratos." Universidade Estadual Paulista (UNESP), 2008. http://hdl.handle.net/11449/90414.

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Made available in DSpace on 2014-06-11T19:24:38Z (GMT). No. of bitstreams: 0 Previous issue date: 2008-08-12Bitstream added on 2014-06-13T20:31:51Z : No. of bitstreams: 1 silva_gf_me_arafo.pdf: 11965708 bytes, checksum: 569274cdbc2fa1d75e754bdc37d497c5 (MD5)<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)<br>O sucesso do tratamento de dentes com perfurações de furca está diretamente relacionado ao tipo de material utilizado no preenchimento destas perfurações. Um material selador ideal deve possuir boas propriedades físicas, químicas e biológicas, sendo, o Mineral Trió
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Sousa, Hugo Alexandre de [UNESP]. "Avaliação microscópica do efeito de diferentes meios de conservação sobre o ligamento periodontal de dentes humanos extraídos cirurgicamente." Universidade Estadual Paulista (UNESP), 2004. http://hdl.handle.net/11449/101071.

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Made available in DSpace on 2014-06-11T19:31:07Z (GMT). No. of bitstreams: 0 Previous issue date: 2004Bitstream added on 2014-06-13T20:41:20Z : No. of bitstreams: 1 sousa_ha_dr_araca.pdf: 1664411 bytes, checksum: 8fb8470dab0600cadc30a00a2b17662b (MD5)<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)<br>Not available.
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Sousa, Hugo Alexandre de. "Avaliação microscópica do efeito de diferentes meios de conservação sobre o ligamento periodontal de dentes humanos extraídos cirurgicamente /." Araçatuba : [s.n.], 2004. http://hdl.handle.net/11449/101071.

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Pedrini, Denise. "Análise do conhecimento dos cirurgiões dentistas sobre plano de tratamento das injúrias do ligamento periodontal após traumatismo dentoalveolar /." Araçatuba, 2008. http://hdl.handle.net/11449/106717.

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Resumo: O diagnóstico preciso e a elaboração de um plano de tratamento adequado podem constituir uma tarefa bastante complexa, especialmente nos traumatismos dentoalveolares, pois necessitam de uma abordagem multidisciplinar e conhecimento sobre o processo de reparo após o traumatismo. O objetivo do trabalho foi analisar o conhecimento dos cirurgiões dentistas sobre plano de tratamento das injúrias do ligamento periodontal após traumatismo dentoalveolar. Para tanto, a partir de um questionário, foram abordadas perguntas referentes ao perfil dos profissionais entrevistados e conduta frente às i
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Esper, Helen Ramon [UNESP]. "Remoção mecânica do ligamento periodontal cementário necrosado com escova de Robinson e pedra pomes e com lâmina de bisturi. Análise histomorfométrica e MEV." Universidade Estadual Paulista (UNESP), 2004. http://hdl.handle.net/11449/88929.

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Made available in DSpace on 2014-06-11T19:23:40Z (GMT). No. of bitstreams: 0 Previous issue date: 2004Bitstream added on 2014-06-13T19:09:42Z : No. of bitstreams: 1 esper_hr_me_araca.pdf: 903917 bytes, checksum: 93df3a7c105f3e9a41fb0a7b59b00e1e (MD5)<br>Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)<br>Um dos fatores importantes no sucesso do reimplante dentário tardio parece ser dependente do tipo de tratamento da superfície radicular. Esse tratamento inclui a remoção do ligamento periodontal cementário necrótico que pode favorecer o aparecimento das reabsorções radicu
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Guilherme, Armando Jose Venturi. "Avaliação histologica do ligamento periodontal de ratos wistar sob efeito do hipotireoidismo agudo induzido pelo metimazol (Tapazol 'Marca Registrada')." [s.n.], 2006. http://repositorio.unicamp.br/jspui/handle/REPOSIP/313461.

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Orientadores: Norair Salviano dos Reis, Antonio de Azevedo Barros Filho<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Ciencias Medicas<br>Made available in DSpace on 2018-08-07T02:20:30Z (GMT). No. of bitstreams: 1 Guilherme_ArmandoJoseVenturi_M.pdf: 3870471 bytes, checksum: a528b13bc51100e1fb5739da61756961 (MD5) Previous issue date: 2006<br>Resumo: Objetivo ¿ Avaliar o ligamento periodontal sob o efeito do hipotireoidismo induzido agudamente. Métodos ¿ Foram utilizados 40 ratos wistar, que foram divididos em 2 grupos de 20 animais cada. O primeiro grupo denomin
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Vasconcelos, Daniel Fernando Pereira. "Efeito da administração intermitente do fragmento 1-34 do hormonio paratireoideo em defeito fenestrado na mandibula de ratos : analise histomorfometrica." [s.n.], 2008. http://repositorio.unicamp.br/jspui/handle/REPOSIP/288498.

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Orientadores: Pedro Duarte Novaes, Marcelo Rocha Marques<br>Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Odontologia de Piracicaba<br>Made available in DSpace on 2018-08-13T11:15:57Z (GMT). No. of bitstreams: 1 Vasconcelos_DanielFernandoPereira_D.pdf: 3147772 bytes, checksum: f14ddeae900959b567ea4b605c927b8b (MD5) Previous issue date: 2008<br>Resumo: A administração intermitente de hormônio paratireóideo (PTH) é capaz de promover anabolismo ósseo, favorecendo a neoformação óssea em condições como osteoporose e reparo de fraturas. Sabendo-se que tanto os tecidos ósseos m
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Silva, Karla Rovaris da 1987. "Estudo da organização do colágeno e resistência do ligamento periodontal em incisivos de ratos irradiados." [s.n.], 2013. http://repositorio.unicamp.br/jspui/handle/REPOSIP/288476.

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Abstract (sommario):
Orientador: Pedro Duarte Novaes<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Odontologia de Piracicaba<br>Made available in DSpace on 2018-08-22T06:39:35Z (GMT). No. of bitstreams: 1 Silva_KarlaRovarisda_M.pdf: 5383756 bytes, checksum: f46eb2dfd48068a21c19841f2e4d3581 (MD5) Previous issue date: 2013<br>Resumo: Os efeitos adversos da radioterapia sobre os tecidos orais vêm sendo estudados com intuito de, cada vez mais, entender como esta age sobre o organismo, bem como para o desenvolvimento de métodos ou substâncias que visem à minimização dessas sequelas. Dent
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Nogueira, Alessandra Fonseca Gambini. "Estudo in vitro do efeito de cones de obturação endodôntica na biomodulação de fibroblastos de ligamento periodontal." Universidade de São Paulo, 2017. http://www.teses.usp.br/teses/disponiveis/23/23156/tde-27112017-122839/.

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A obturação do canal radicular é uma etapa fundamental para o sucesso do tratamento endodôntico. É desejável que os materiais empregados nesta fase não interferiram negativamente com o reparo tecidual, mas preferencialmente estimulem a regeneração dos tecidos periapicais. Recentemente, cones de guta-percha combinados com material biocerâmico foram desenvolvidos com esta finalidade. Sendo assim, o objetivo deste estudo foi investigar o potencial citotóxico e biomodulador de cones de guta-percha convencionais, de cones de guta-percha contendo biocerâmica e de cones de polímero sobre células de l
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Carvalho, Helen Ramon Esper de. "Remoção mecânica do ligamento periodontal cementário necrosado com escova de Robinson e pedra pomes e com lâmina de bisturi. Análise histomorfométrica e MEV /." Araçatuba : [s.n.], 2004. http://hdl.handle.net/11449/88929.

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Orientador: Sônia Regina Panzarini Barioni<br>Resumo: Um dos fatores importantes no sucesso do reimplante dentário tardio parece ser dependente do tipo de tratamento da superfície radicular. Esse tratamento inclui a remoção do ligamento periodontal cementário necrótico que pode favorecer o aparecimento das reabsorções radiculares externas, maior causa da perda dos dentes reimplantados nessas condições. O objetivo desse estudo foi comparar a efetividade de duas técnicas de remoção mecânica do ligamento periodontal cementário necrosado e a preservação da camada de cemento. Foram utilizadas 45 ra
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Libri sul tema "Periodontal ligament"

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J, Moxham B., Newman Hubert N, and Berkovitz B. K. B, eds. The periodontal ligament in health and disease. 2nd ed. Mosby-Wolfe, 1995.

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Loescher, Alison Ruth. Studies on the innervation of the periodontal ligament. Universityof Birmingham, 1989.

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Lee, Nancy May. Design and Optimization of an Integrative Periodontal Ligament Scaffold. [publisher not identified], 2016.

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Nguyen, Lan Phan. A critique of the paper "Collagen implants do not preserve periodontal ligament homeostasis in periodontal wounds". University of Toronto, Faculty of Dentistry], 1996.

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A, Norton Louis, Burstone Charles 1928-, and Biology of Tooth Movement Conference (1986 : Farmington, Conn.), eds. The Biology of tooth movement. CRC Press, 1989.

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Lin, Deborah G. Storage conditions of avulsed teeth affect the phenotype of cultured human periodontal ligament cells. Faculty of Dentistry, University of Toronto, 1999.

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Hellén-Halme, Kristina. Quality aspects of digital radiography in general dental practice. Malmö University, Department of Oral and Maxillofacial Radiology, Faculty of Odontology, 2007.

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Arturo, Natali, ed. Dental biomechanics. Taylor & Francis, 2003.

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N, Natali Arturo, ed. Dental biomechanics. Taylor & Francis, 2003.

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Berkovitz, B. K. B. The Periodontal Ligament Disease. 2nd ed. Mosby, 1995.

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Capitoli di libri sul tema "Periodontal ligament"

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Menicanin, Danijela, K. Hynes, J. Han, S. Gronthos, and P. M. Bartold. "Cementum and Periodontal Ligament Regeneration." In Engineering Mineralized and Load Bearing Tissues. Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-22345-2_12.

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Komaki, Motohiro. "Pericytes in the Periodontal Ligament." In Advances in Experimental Medicine and Biology. Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-11093-2_10.

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Mark Bartold, P. "Bone and Tooth Interface: Periodontal Ligament." In Mineralized Tissues in Oral and Craniofacial Science. John Wiley & Sons, Inc.,, 2013. http://dx.doi.org/10.1002/9781118704868.ch26.

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Elçin, Y. Murat, Bülend İnanç, and A. Eser Elçin. "Human Embryonic Stem Cell Differentiation on Periodontal Ligament Fibroblasts." In Methods in Molecular Biology. Humana Press, 2009. http://dx.doi.org/10.1007/978-1-60761-369-5_14.

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Trubiani, Oriana, and Francesca Diomede. "Xeno-Free Culture of Human Periodontal Ligament Stem Cells." In Methods in Molecular Biology. Springer New York, 2014. http://dx.doi.org/10.1007/7651_2014_122.

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Wilson, A. N., J. Middleton, G. N. Pande, and M. L. Jones. "Nonlinear Behaviour of the Periodontal Ligament a Numerical Approach." In Interfaces in Medicine and Mechanics—2. Springer Netherlands, 1991. http://dx.doi.org/10.1007/978-94-011-3852-9_32.

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Issaranggun Na Ayuthaya, Benjar, and Prasit Pavasant. "Influence of Exogenous IL-12 on Human Periodontal Ligament Cells." In Interface Oral Health Science 2016. Springer Singapore, 2016. http://dx.doi.org/10.1007/978-981-10-1560-1_18.

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Elçin, Y. Murat, Bülend İnanç, and A. Eser Elçin. "Differentiation of Human Embryonic Stem Cells on Periodontal Ligament Fibroblasts." In Methods in Molecular Biology. Springer New York, 2014. http://dx.doi.org/10.1007/7651_2014_130.

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Farag, Amro, Cedryck Vaquette, Dietmar W. Hutmacher, P. Mark Bartold, and Sašo Ivanovski. "Fabrication and Characterization of Decellularized Periodontal Ligament Cell Sheet Constructs." In Methods in Molecular Biology. Springer US, 2022. http://dx.doi.org/10.1007/978-1-0716-2780-8_25.

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Moustafa, Mahmoud, Muhammad Najib Roslly, Zuhaila Ismail, Nurul Aini Jaafar, Sharidan Shafie, and Norehan Mokhtar. "Mathematical Modelling and Simulation of Periodontal Ligament Using COMSOL Multiphysics." In Proceedings of the International Conference on Mathematical Sciences and Statistics 2022 (ICMSS 2022). Atlantis Press International BV, 2022. http://dx.doi.org/10.2991/978-94-6463-014-5_25.

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Atti di convegni sul tema "Periodontal ligament"

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Zhang, X., Y. Li, R. Wang, and Z. Wang. "Dose-dependent cytotoxicity and genotoxicity in periodontal ligament fibroblasts induced by cold atmospheric plasma." In 2024 IEEE International Conference on Plasma Science (ICOPS). IEEE, 2024. http://dx.doi.org/10.1109/icops58192.2024.10625997.

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Kafel, N., J. Kolodziejski, M. Niemiera, and M. Reed. "Separation of the periodontal ligament for atraumatic tooth extraction." In 2014 40th Annual Northeast Bioengineering Conference (NEBEC). IEEE, 2014. http://dx.doi.org/10.1109/nebec.2014.6972830.

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Karam, Leandro Z., Maura S. Milczewski, and Hypolito J. Kalinowski. "Strain monitoring of the periodontal ligament in pig's mandibles." In OFS2012 22nd International Conference on Optical Fiber Sensor, edited by Yanbiao Liao, Wei Jin, David D. Sampson, et al. SPIE, 2012. http://dx.doi.org/10.1117/12.975270.

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Maurtgi, Moustafa, Sharlina binti Mohamad, Siti Noor Fazliah Mohd Noor, and Norehan Mokhtar. "Effect of vitamin E on human periodontal ligament fibroblasts." In TRANSLATIONAL CRANIOFACIAL CONFERENCE 2016 (TCC 2016): Proceedings of the 1st Translational Craniofacial Conference 2016. Author(s), 2016. http://dx.doi.org/10.1063/1.4968874.

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Gao, Zhen, and Xiaoting Luo. "Biological Effect of Titanium's Surface Roughness on Periodontal Ligament Cells." In 2009 3rd International Conference on Bioinformatics and Biomedical Engineering (iCBBE). IEEE, 2009. http://dx.doi.org/10.1109/icbbe.2009.5162449.

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Menegotto, G. F., L. Grabarski, H. J. Kalinowski, and J. A. Simões. "Trial analysis of swine's periodontal ligament with Bragg grating sensors." In 20th International Conference on Optical Fibre Sensors, edited by Julian D. C. Jones. SPIE, 2009. http://dx.doi.org/10.1117/12.835231.

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Yang, Yu, Wencheng Tang, and Yao jun Wang. "Experimental Analysis of the Elastic Modulus of Periodontal Ligament in Nanoindentation." In ASME 2016 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/detc2016-59040.

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Abstract (sommario):
The periodontal ligament (PDL) is a soft connective tissue which exhibits an inhomogeneous, nonlinear, and anisotropic material properties. and the elastic modulus of different positions on each section are not the same, analysis of the material properties of PDL enables a better understanding of biomechanical features for tooth movement. The aim of this study was to study the elastic modulus of different section of PDL in nanoindentation. Experimental results indicate that the average elastic modulus elastic modulus in midroot are lower than cervical margin and apex, and there is large change
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8

Rahimi, Masoud, and Afsaneh Mojra. "Numerical modeling of hyperfoam behavior of periodontal ligament in mechanical loading." In 2019 26th National and 4th International Iranian Conference on Biomedical Engineering (ICBME). IEEE, 2019. http://dx.doi.org/10.1109/icbme49163.2019.9030376.

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9

Si-Eun Kim, Soo-Hyuk Uhm, Doo-Hoon Song, et al. "Enhanced funtion of human periodontal ligament cells cultured on nanoporous titanium surfaces." In 2012 IEEE 39th International Conference on Plasma Sciences (ICOPS). IEEE, 2012. http://dx.doi.org/10.1109/plasma.2012.6383859.

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10

Zhurov, Alexei I., Sam L. Evans, Catherine A. Holt, and John Middleton. "A Nonlinear Compressible Transversely-Isotropic Viscohyperelastic Constitutive Model of the Periodontal Ligament." In ASME 2008 International Mechanical Engineering Congress and Exposition. ASMEDC, 2008. http://dx.doi.org/10.1115/imece2008-67949.

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Abstract (sommario):
The periodontal ligament may be treated as a transversely-isotropic viscohyperelastic fibre-reinforced compressible material which is subject to large deformations and has an essentially nonlinear behavior. Within these assumptions, a continuum constitutive model of the PDL was proposed recently [48], which involves a number of material parameters that have to be identified from experimental data. An optical motion analysis system was developed [26] to collect data on the deformation of the PDL. In the present paper, an advanced version of the model is suggested, which is based on the assumpti
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Rapporti di organizzazioni sul tema "Periodontal ligament"

1

Pavasant, Prasit, and Tussanee Yongchaitrakul. Influence of mechanical stress on the expression of osteopontin in human periodontal ligament cells. Chulalongkorn University, 2008. https://doi.org/10.58837/chula.res.2008.14.

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Abstract (sommario):
Background: Mechanical stress such as orthodontic forces can produce mechanical damage and inflammatory reaction in periodontium. Osteopontin (OPN) is a multifunctional cytokine that found to be correlated with periodontal disease progression. As periodontal ligaments (PDL) can be affected by stress and PDL cells are involved in periodontal destruction and remodeling, we aimed to investigate the influence of mechanical stress on the expression and regulation of OPN in human PDL (HPDL) cells. Methods: The mechanical stress was generated by continuous compressive force and the expression of OPN
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2

Osathanon, Thanaphum. Gene expression profile of continuous and intermittent compressive stress treated human periodontal ligament cells. Faculty of Dentistry Chulalongkorn University, 2019. https://doi.org/10.58837/chula.res.2019.7.

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Abstract (sommario):
Mechanical force regulates periodontal ligament cell (PDL) behavior. However, different force types lead to distinct PDL responses. Here, we report that pretreatment with an intermittent compressive force (ICF), but not a continuous compressive force (CCF), promoted human PDL (hPDL) osteogenic differentiation as determined by osteogenic marker gene expression and mineral deposition in vitro. ICF-induced osterix (OSX) expression was inhibited by cycloheximide and monensin. Although CCF and ICF significantly increased extracellular adenosine triphosphate (ATP) levels, pretreatment with exogenous
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3

Sumrejkanchanakij, Piyamas, Prasit Pavasant, and Tusanee Yongchaitrakul. The influence of collagen I on Insulin-like growth factor-I induced Osteopontin expression in human periodontal ligament fibroblasts. Chulalongkorn University, 2006. https://doi.org/10.58837/chula.res.2006.14.

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Abstract (sommario):
Extracellular matrix and growth factors are the crucial factors that regulate healing and regenerating process in human periodontal ligament (HPDL) cells. The purpose of this study was to examine the effects of type I collagen and insulin-like growth factor-I (IGF-I) on osteopontin (OPN) expression. The data showed that OPN expression was significantly decreased when cells were cultured on collagen-coated plates. Addition of IGF-I obviously induced OPN expression only in a collagen-coated condition, suggesting an attenuation effect of IGF-I on OPN expression inhibited by type I collagen. Cells
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4

Chansiripornchai, Piyarat, and Thanaphum Osathanon. In vitro differentiation of mesenchymal stem cells from dental and oral tissues into Islet-like cell cluster. Chulalongkorn University, 2013. https://doi.org/10.58837/chula.res.2013.93.

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Abstract (sommario):
Diabetes mellitus is a complicated metabolic disorder resulting in hyperglycemia and long-term complications e.g. diabetic encephalopathy and neuropathy. Treatments of diabetes and its complications have faced many obstacles. Trend of stem cells (SCs)-based therapy has been proposed as a novel approach. Though, the study using dental SCs in this regard is yet lacking. In this study, human dental pulp SCs (hDPSCs) and human periodontal ligament SCs (hPDLSCs) were employed. The results illustrated the capability of differentiation toward islet-like cells (ILCs) cluster / insulin-producing cells
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