Computer Simulation of Tooth Mobility using Varying Material Properties

Tooth mobility is the major cause of stress on a tooth implant or partial denture and often results in the damage of the device. For many prosthetic devices like dental bridges, a partial denture used for a person who is missing a tooth to give the appearance and function of a tooth, mobility can cause up to double the amount of stress in comparison to a fixed model. Creating a computer simulation of tooth mobility using Finite Element Analysis allows one to understand and predict this movement in order to improve future dental prosthetic devices. The main cause of tooth mobility within the mouth is the periodontal ligament (PDL). This ligament is a soft biological tissue that surrounds the roots of teeth. The tooth moves when a force like mastication, or chewing, causes the ligament to deform. This deformation is due to the small Young’s Modulus of the ligament. The Young’s Modulus determines the stiffness of a material. In the case of the PDL, the Young’s Modulus is sometimes noted to be 30,000 times smaller than that of dentin, this is the material that makes up the majority of the tooth, and of the alveolar bone, this is the bone in which the tooth lies. The deformation of the PDL is also due to the viscoelastic nature of the ligament. The major elastic component of the ligament is collagen, this material allows the PDL to stretch to a certain limit, and the major viscous component of the ligament is the interstitial fluid between the cells, this allows the material to have a fluid-like nature (4)

Q&A: Epistasis

Molecular and Cellular Biolog

Brauchen wir ein anderes Weltwährungsregime? - Tripolare Währungsordnung zukunftsfähig

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Cultural Awareness and Sensitivity of Students in a Physical Therapy Program – A Pilot Survey

Background: Attempts to address health and health care disparities in the United States have led to a renewed focus on the training of healthcare professionals including physical therapists. Current health care policies emphasize culturally competent care as a means of promoting equity in care delivery by health care professionals. Experts agree that cultural insensitivity has a negative association with health professionals’ ability to provide quality care. Objective: To evaluate the cultural awareness and sensitivity of physical therapy (PT) students in a didactic curriculum aimed to increase cultural awareness. Methods: Using the Multicultural Sensitivity Scale (MSS), a cross-sectional survey was conducted to assess cultural sensitivity among three groups of students, (N = 139) from a doctor of physical therapy (DPT) program at a liberal arts university in Saint Louis, MO. Results: Response rate was 76.3%. Participants (n=100) were students in first (DPT1, n=36), third (DPT3, n=36), and sixth (DPT6, n=28) year of the program. Mean ranked MSS score was DPT1 = 45.53, DPT3 = 46.60 DPT6 = 61.91. Kruskal-Wallis analysis of the mean ranked scores showed a significant difference among three groups, H = 6.05 (2, N=100), p ≤ .05. Discussion: Students who have completed the cultural awareness curriculum, and undergone clinical experiences rated themselves higher on the cultural sensitivity/awareness. Results provide initial evidence that experiential learning opportunities may help PT students to more effectively integrate knowledge from classroom activities designed to facilitate cultural competence

MW 775 Christian Witness and Other Faiths

Richard Plantinga, ed. Christianity and Plurality: Classic and Contemporary Readings. Oxford: Blackwell, 1999. 379 pages. ISBN: 0-631-20915-8 (paperback) Wesley Pluralism Packet David Bosch. A Spirituality of the Road. Eugene, Oregon: Wipf and Stock, 2000 (1979). 92 pages. ISBN: 1-57910-795-8 (paperback) Paul Hiebert. Missiological Implications of Epistemological Shifts. Harrisburg, PA: Trinity Press, International, 1999. 135 pages. ISBN: 1-56338-259-8 (paperback)https://place.asburyseminary.edu/syllabi/2452/thumbnail.jp