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  • condylar
  • Denes, Balazs J;Lazzarotto, Benjamin;Bresin, Andrea;Kiliaridis, Stavros 2017-10-11 00:00:00 Summary Background and objectives Apart from the primary effect of bite-blocks on tooth position, they may also influence the mandibular condylar growth. (deepdyve.com)
  • Results The use of bite-blocks decreased the length of the condylar process (P = 0.001) as well as the volume of the condylar neck (P = 0.001) and head (P = 0.006). (deepdyve.com)
  • 0.001) two to three times more than the bite-blocks but did not affect the condylar process length. (deepdyve.com)
  • However, only the bite-block appliance affected the condylar process length. (deepdyve.com)
  • However, to our knowledge, no clinical studies exist to elucidate if these changes influence the condylar growth and if the use of the posterior bite-block appliance may cause certain changes on the condylar morphology. (deepdyve.com)
  • cranial
  • We conclude that the specific morphology of the palaeognathous upper bill and PPC are not designed for active cranial kinesis, but are adapted to resist external forces that might cause unwanted elevation of the upper bill during feeding. (biologists.org)
  • skull
  • Here, to our knowledge, in the most comprehensive three-dimensional finite element analysis performed to date for any taxon, we ask whether the traditional view that the bite of H. sapiens is weak and the skull too gracile to sustain high bite forces is supported. (royalsocietypublishing.org)
  • Here, using three-dimensional finite element analysis (FEA), we test the hypothesis that the human bite is weak and the skull unable to sustain high bite forces compared with that of other hominoids. (royalsocietypublishing.org)
  • These forces are transferred onto the moveable parts of the skull via the Pterygoid-Palatinum Complex (PPC). (biologists.org)
  • Model calculations suggest that the large processi basipterygoidei play a role in stabilizing the skull elements, when birds have to resist external opening forces on the upper bill as might occur during tearing leafs from plants. (biologists.org)
  • Here, we develop a biomechanical model of force and motion during feeding in Dunkleosteus terrelli that reveals a highly kinetic skull driven by a unique four-bar linkage mechanism. (royalsocietypublishing.org)
  • therefore
  • Therefore, this study compared the maximum deformation and failure forces of titanium implants between titanium-alloy and zirconia abutments under oblique compressive forces in the presence of two levels of marginal bone loss. (biomedcentral.com)
  • Such injury may debilitate the individual by preventing or limiting his/her use of the joint and the loss of function… Dysfunctional or ruptured ligaments, therefore, result in a complex- syndrome, various sensory-motor disorders and other long-term consequences, which impact the individual's well-being, his athletic activities, employer, skilled work force pool and national medical expenses. (uschirodirectory.com)
  • peak force
  • These are the pre-load force, which takes the tissue close to its paraphysiological limit, the peak force or thrust stage and the resolution stage. (uschirodirectory.com)
  • From the beginning of the thrust to end of the resolution phase, [CSA] duration varies between 90 and 120 ms. (mean = 102 ms.). The time to peak force during the thrust phase ranges from 30 to 65 ms. (mean = 48 ms.). Peak applied forces range from 99 to 140 N (mean = 118 N, n = 6 treatments). (uschirodirectory.com)
  • In the same study with [CSA] directed at the thoracic (T4) region and applied to three different patients by the same practitioner, the mean (SD) time to peak force was 150 ± 77 ms. and mean peak force reached 399 ± 119 N. During the resolution phase, force returned to pre-[CSA] levels over durations up to two times longer than that of the thrust phase. (uschirodirectory.com)
  • The peak force during manipulation of the lumbar spine measured by Triano and Schultz (1997) tended to be higher than during the thoracic or sacroiliac manipulation measured by Herzog et al. (uschirodirectory.com)
  • bone
  • Based on this experimental study, the maximum deformation and failure forces are lower for implants with a marginal bone loss of 3.0 mm than of 1.5 mm. (biomedcentral.com)
  • Despite this, if the patient's maximum bite force is recorded in the planning stages, it's possible to control these forces by combining the right number and type of implants, the right positioning to minimise impact, and the right density of bone. (mimetikoss.com)
  • Some studies contend that a modest bite limited T. rex to scavenging [ 3 ], while others have argued that high 'bone-crushing bite' forces facilitated a 'puncture-pull' mode of predation [ 1 , 2 , 4 ]. (royalsocietypublishing.org)
  • mean
  • A mean M.B.F for the total sample ranges from 205 to 657 N. The largest value of bite force were in the short face and the smallest value in long face. (medicaljb.com)
  • CSA, referred to in the literature as spinal manual therapy, "…in the cervical region has relatively little pre-load ranging from 0 to 39.5 N. In contrast, the average pre-load forces during [CSA] in the thoracic region (139 ± 46 N, ± SD) and sacroiliac region (mean 88 N ± 78 N) are substantially higher than in the cervical region and are potentially different from each other. (uschirodirectory.com)
  • When [CSA] was applied to the sacroiliac joint, mean applied peak forces reached 328 ± 78 N, with the thrust and resolution phases having similar durations (∼100ms. (uschirodirectory.com)
  • Comparisons
  • These factors have a determinate effect on mechanical performance [ 5 - 8 ] and such a model would provide reasonable estimates of the quantitative data required to test hypotheses regarding bite performance, facilitating meaningful comparisons between T. rex and other taxa, both living and extinct. (royalsocietypublishing.org)
  • sufficient
  • Zirconia materials are known for their optimal aesthetics, but they are brittle, and concerns remain about whether their mechanical properties are sufficient for withstanding the forces exerted in the oral cavity. (biomedcentral.com)
  • Consider the patient who has a chronic popcorn habit - even though their bite force alone might not be perceived as excessive, when you combine this with their habit of continually crunching on any hard un-popped kernels, it might be sufficient to cause untold damage. (mimetikoss.com)
  • Again, they mightn't have an overly-excessive bite force, but add this to their likening for hard fingernails and it may be sufficient enough to eventually cause an implant to fail. (mimetikoss.com)
  • cause
  • Other factors for example can work in tandem with bite force to cause overload to any implant supported structure. (mimetikoss.com)
  • 2, 11 Most authors 12- 14 agree that weakness in one or more scapular rotators may cause muscular imbalance in the force couples around the scapula, leading to abnormal kinematics. (bmj.com)
  • performance
  • Positive allometry in bite performance during growth may have facilitated an ontogenetic change in feeding behaviour in T. rex , associated with an expansion of prey range in adults to include the largest contemporaneous animals. (royalsocietypublishing.org)
  • initial
  • For dentists looking to place any type of implant-based restoration, the initial force of a patient's natural bite can and does have a significant impact on implant success. (mimetikoss.com)