“…However, the periodontal ligament and the cancellous bone react with low compliance during a dental injection in vivo (Palcanis , Walker et al . , Pashley et al . ), so a periapical lesion entirely surrounded by cortical bone would also be expected to react with low compliance to extruded irrigant within the same time frame.…”
The conductivity probe is a reliable method for real-time quantification of irrigant extrusion ex vivo. Not simulating tissue resistance in ex vivo experiments may lead to significant overestimation of irrigant extrusion.
“…However, the periodontal ligament and the cancellous bone react with low compliance during a dental injection in vivo (Palcanis , Walker et al . , Pashley et al . ), so a periapical lesion entirely surrounded by cortical bone would also be expected to react with low compliance to extruded irrigant within the same time frame.…”
The conductivity probe is a reliable method for real-time quantification of irrigant extrusion ex vivo. Not simulating tissue resistance in ex vivo experiments may lead to significant overestimation of irrigant extrusion.
“…4) more closely resemble the fluid pressure changes in the PDL that were observed in Walker's experiment. 9 The pressure stress changes in the PDL of the volumetric-based models match the P-response, and the pressure stress changes in the deviatoric model are similar to the typical S-response. According to Walker's study, the P-response is representative of the behavior of a normal, undamaged PDL, while the S-response represents the behavior of a damaged PDL.…”
Section: Discussionmentioning
confidence: 62%
“…On the other hand, pressure stresses in the deviatoric viscoelastic model increased over time, which suggests that the major source of viscoelasticity in the PDL comes from the fluid/vascular system of the PDL. 9 To describe the properties of the PDL, different investigators have suggested various roles for each component of the PDL. Parfitt hypothesized that the displacement of the tooth is largely controlled by fluids in both the vascular and tissue fluid systems.…”
Section: Discussionmentioning
confidence: 99%
“…8 In addition, Walker et al gathered a great deal of perplexing experimental data and suggested that mathematical modeling might be able to clarify many of the unresolved questions regarding the PDL. 9 Clearly, mathematical modeling has steadily gained its share of advocates in dental research.…”
We believe that the biomechanical properties of the PDL established via retrograde calculation in this study can lead to the construction of more accurate extra-oral models and a comprehensive understanding of the biomechanical behavior of the PDL.
“…Tissue pressure, or interstitial fluid pressure, is the hydrostatic pressure in the potential free fluid of the interstitium in the tissue 8. The tissue pressure and blood flow within the socket under various experimental conditions have been extensively reported [7][8][9][10][11][12]. The tissue pressure in and around the tooth may be one of the motive forces of axial tooth movements [13][14][15].…”
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