Results 351 to 360 of about 359,712 (386)

The effects of periodontal ligament injection on pulpal and periodontal tissues

Journal of Endodontics, 1990
This study was designed to investigate histologically the effects of the periodontal ligament injection on the pulp of teeth with or without subsequent amalgam restorations, and the effects of the injection on the periodontium. Eighty-eight injections were made on 55 teeth in dogs in intervals from 10-min to 30-day prefixation, while 18 teeth were not ...
F. James Marshall, James O. Roahen
openaire   +3 more sources

Tensile behaviour of the periodontal ligament

Journal of Periodontal Research, 1982
Transverse sections of human periodontal ligament were subjected to tensile loads. Extension‐time, load‐time, and load‐extension curves were obtained. The average value for the ultimate tensile strength of the ligament was found to be 2.4 N/mm2. Loading of the ligament for either extrusion or intrusion did not appear to change its behaviour.
openaire   +3 more sources

The use of the periodontal ligament injection in children

Journal of Dentistry, 1987
Abstract The present study was undertaken to assess the efficacy, safety and acceptability of the periodontal ligament injection for restorative procedures on lower permanent molars in young patients. Results from 100 consecutive cases showed a 67 per cent success rate for completely satisfactory analgesia.
Sally Craig, Lesley Davidson
openaire   +3 more sources

Spheroid culture enhances osteogenic potential of periodontal ligament mesenchymal stem cells

Journal of Periodontal Research, 2018
OBJECTIVE AND BACKGROUND Human periodontal ligament mesenchymal stem cells (hPDLMSCs) are reported to be responsible for homeostasis and regeneration of periodontal tissue.
Y. Moritani, M. Usui, K. Sano, Kohji Nakazawa, T. Hanatani, M. Nakatomi, Takanori Iwata, Tsuyoshi Sato, W. Ariyoshi, Tatsuji Nishihara, Keisuke Nakashima   +10 more
semanticscholar   +1 more source

Collagenase in the Human Periodontal Ligament

Journal of Periodontology, 1980
Collagenase activity was demonstrated by direct incubation to be present in human periodontal ligament. This activity was found in only one of two populations of ligament, i.e., those ligaments taken from teeth in which their attachment site was at least 2.5 mm apical to the cementoenamel junction.
openaire   +3 more sources

Continuous labelling of the periodontal ligament of mice

Journal of Periodontal Research, 1983
The growth fraction in the mouse periodontal ligament (PL) was determined by means of continuous labelling for up to 60 days with 3H‐Tdr via the drinking water. The method was tested by comparing the labelling indices (LI) of PL cells obtained in this way with those obtained by repeated injections or via osmotic mini‐pumps.
A. H. Melcher, Christopher A. McCulloch
openaire   +3 more sources

Numerical simulation of hydro-mechanical coupling of periodontal ligament

Proceedings of the Institution of mechanical engineers. Part H, journal of engineering in medicine, 2019
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 ...
M. Ashrafi, F. Ghalichi, B. Mirzakouchaki, Iman Zoljanahi Oskui   +3 more
semanticscholar   +1 more source

The Response of Periodontal Ligament Cells to Fibronectin

Journal of Periodontology, 1998
Fibronectin (FN) is an extracellular matrix (ECM) molecule important in cell adhesion and migration and in wound healing. It is also likely important in periodontal ligament (PDL) cell–ECM interactions, and thus in regenerating periodontal tissues.
Paul W. Johnson, Hope Lancero, Yvonne L. Kapila   +2 more
openaire   +3 more sources

Upregulation of long noncoding RNA MEG3 inhibits the osteogenic differentiation of periodontal ligament cells

Journal of Cellular Physiology, 2018
This study aims to discuss long noncoding RNA (lncRNA) maternally expressed gene 3 (MEG3) function of regulating osteogenesis in human periodontal ligament cells (hPDLCs).
Yi Liu, Xuemin Zeng, Jie Miao, Chunpeng Liu, F. Wei, Dongxu Liu, Zhong Zheng, K. Ting, Chunling Wang, Jie Guo   +9 more
semanticscholar   +1 more source

Metabolism of Androgens by Human Periodontal Ligament

Journal of Dental Research, 1982
The metabolism of androgens (testosterone and androstenedione) has been studied in healthy and diseased human periodontal ligaments. An increased activity of 17β-oxidoreductase and 17-keto-5α-A-ring reductase and decreased activity of 17β-hydroxy-5α-A-ring reductase, 3αβ-oxidoreductase and 5β-A-ring reductase have been found in diseased periodontal ...
A L Southren, Gary G. Gordon, S.C. Rappaport, J. Vittek, J. Hagedoorn   +4 more
openaire   +3 more sources