نتایج جستجو برای: periodontal ligament

تعداد نتایج: 42509  

Journal: :avicenna journal of dental research 0
sara soheilifar department of priodontics, faculty of dentistry, hamadan university of medical sciences, hamadan, ir iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی همدان (hamadan university of medical sciences) iraj amiri research center for endometrium and endometriosis, hamadan university of medical sciences, hamadan, ir iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی همدان (hamadan university of medical sciences) mohsen bidgoli department of priodontics, faculty of dentistry, hamadan university of medical sciences, hamadan, ir iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی همدان (hamadan university of medical sciences) morad hedayatipanah department of priodontics, faculty of dentistry, hamadan university of medical sciences, hamadan, ir iran; department of priodontics, faculty of dentistry, hamadan university of medical sciences, hamadan, ir iran. tel: +98-9188413990سازمان اصلی تایید شده: دانشگاه علوم پزشکی همدان (hamadan university of medical sciences) janet moradi haghgoo department of priodontics, faculty of dentistry, hamadan university of medical sciences, hamadan, ir iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی همدان (hamadan university of medical sciences) mohammad ali momeni department of orthodontics, faculty of dentistry, hamadan university of medical science, hamadan, ir iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی همدان (hamadan university of medical sciences)

background periodontium may be able to respond to injuries by regeneration via the function of stem cells. objectives this study sought to assess the differentiation of human periodontal ligament stem cells (pdlscs) into osteoblasts in standard osteogenic medium and in a medium supplemented with 1,25-dihydroxyvitamin d3 (calcitriol). materials and methods in this experimental study, pdlscs were...

Journal: :International journal of molecular medicine 2008
Giuseppe Anastasi Giancarlo Cordasco Giovanni Matarese Giuseppina Rizzo Riccardo Nucera Manuela Mazza Angela Militi Marco Portelli Giuseppina Cutroneo Angelo Favaloro

The periodontal ligament lies between the hard tissues of alveolar bone and cementum of teeth and serves to anchor the tooth to the alveolus and functions as a cushion between these hard tissues to migrate occlusal force during mastication. This tissue is always exposed to mechanical stress during mastication. When occlusal forces exceed the adaptive capacity of the periodontal ligament, the pe...

ژورنال: مجله دندانپزشکی 1992
اخوان نیاکی, اسفندیار ,

Normal 0 false false false EN-US X-NONE AR-SA Periodontal ligament changes depend on amount, duration and type of forces. Teeth movement toward periodontal ligament starts from the initial hours by formation of pressure and traction areas. These areas as well as vascular system must be preserved under the forces. Bone loss is resulted from osteocla...

Journal: :journal of dentistry, tehran university of medical sciences 0
zainab kadkhoda sahar chokami rafiei bahare azizi ahad khoshzaban sepehr torabi

objectives: periodontal tissue regeneration for treatment of periodontal disease has not yet been mastered in tissue engineering. stem cells, scaffold, and growth factors are the three main basic components of tissue engineering. periodontal ligament (pdl) contains stem cells; however, the number, potency and features of these cells have not yet been understood. this study aimed to isolate and ...

Journal: :journal of dentistry, tehran university of medical sciences 0
sara tavassoli-hojjati assistant professor, department of pediatric dentistry, dental school, shahed university, tehran, iran. elham aliasghar dentist, department of pediatric dentistry, dental school, shahed university, tehran, iran. fatemeh ahmadian babaki assistant professor, department of pharmacology and medicinal plants research center, faculty of pharmacy, tehran university of medical sciences, tehran, iran. fatemeh emadi assistant professor, department of pharmacology and medicinal plants research center, faculty of pharmacy, tehran university of medical sciences, tehran, iran. maliheh parsa phd student, department of toxicology & pharmacology, faculty of pharmacy, tehran university of medical sciences, tehran, iran. shohreh tavajohi general technician, department of toxicology & pharmacology, faculty of pharmacy, tehran university of medical sciences, tehran, iran.

there is evidence indicating that pomegranate juice contains many of the essential properties necessary to retain cell viability and cell proliferation. these properties indicate that pomegranate juice is a suitable storage medium for avulsed teeth. however, this idea has not yet been tested. in this study, the capacity of pomegranate juice (pj) as a storage medium for retaining avulsed teeth w...

2010
Tom Struys Joke Schuermans Livia Corpas Constantinus Politis Luc Vrielinck Serge Schepers Reinilde Jacobs Lambrichts Ivo

INTRODUCTION Auto-transplantation of third molars is frequently undertaken in order to restore a perfect occlusion and to improve mastication following a substantial loss of molars. However, little is known about the precise role of the periodontal membrane during this procedure. Therefore, we investigated if the epithelial rests of Malassez persist in the periodontal ligament of auto-transplan...

2010
Norman Duque Penedo Carlos Nelson Elias Maria Christina Thomé Jayme Pereira de Gouvêa

Objective: To develop and validate a three-dimensional (3D) numerical model of a maxillary central incisor to simulate tooth movement using the Finite Element Method (FEM). Methods: This model encompasses the tooth, alveolar bone and periodontal ligament. It allows the simulation of different tooth movements and the establishment of centers of rotation and resistance. It limits the movement int...

Journal: :Journal of clinical and diagnostic research : JCDR 2015
Priyadarshini Choudhury Rajat G Panigrahi Maragathavalli Antarmayee Panigrahi Padma Charan Patra

Idiopathic root resorption is a very rare phenomenon. Resorption in tooth is brought about by odontoclastic activity. Special mechanisms in the periodontal ligament exist to prevent mineralization of the periodontal ligament and these periodontal ligament cells produce factors that inhibit mineralized tissue resorption and are capable of regulating bone and cementum formation. When this mechani...

2015
L. Feller R. A. G. Khammissa I. Schechter G. Thomadakis J. Fourie J. Lemmer

Orthodontic force-induced stresses cause dynamic alterations within the extracellular matrix and within the cytoskeleton of cells in the periodontal ligament and alveolar bone, mediating bone remodelling, ultimately enabling orthodontic tooth movement. In the periodontal ligament and alveolar bone, the mechanically induced tensile strains upregulate the expression of osteogenic genes resulting ...

Journal: :journal of dentistry, tehran university of medical sciences 0
meenakshi sharma sanjay sharma y. g. reddy rakesh mittal vishal agarwal chanchal singh

objectives: this study was undertaken to evaluate the viability of periodontal ligament (pdl) cells of avulsed teeth in three different storage media. materials and methods: forty-five premolars extracted for orthodontic therapeutic purposes were randomly and equally divided into three groups based on storage media used [group i: milk (control); group ii: aloe vera (experimental); group iii: eg...

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