Fluid pressures in the periodontal ligament of the mandibular canine tooth in dogs

A new method for real‐time quantification of irrigant extrusion during root canal irrigation ex vivo

“…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.…”

Tension-compression viscoelastic behaviors of the periodontal ligament

“…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.…”

“…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.…”

“…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.…”

Measurement of Tissue Pressure in the Dental Pulp, using a Servo-Controlled Counterpressure System, of the Rat Incisor

“…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].…”