Research Article

Evaluation of Qualitative Changes in Simulated Periodontal Ligament and Alveolar Bone Using a Noncontact Electromagnetic Vibration Device with a Laser Displacement Sensor

Table 3

Coefficient of viscosity (Pa⋅s).

Liquid volume Simulated bone quality Group A Group B Group C
Median (minimum/maximum)

3.0 mL Polyurethane4.94 (4.75/5.31)5.06 (4.80/5.31)7.38 (7.13/8.04)
Polyurethane foam4.12 (3.93/4.19)4.00 (3.87/4.18)4.44 (4.43/4.86)

4.0 mL Polyurethane4.13 (3.87/4.45)3.87 (3.61/4.28)6.36 (6.36/6.82)
Polyurethane foam3.56 (3.53/3.88)3.54 (3.30/3.67)4.11 (4.02/4.20)

5.0 mL Polyurethane3.25 (3.12/3.43)3.18 (3.06/3.37)3.93 (3.83/4.02)
Polyurethane foam2.87 (2.69/3.06)2.87 (2.75/3.00)2.90 (2.80/2.99)

Identical lowercase letters between polyurethane and polyurethane foam values at the same liquid volume indicate that the values within groups are not significantly different ().
Identical uppercase letters among liquid volumes with the same bone quality indicate that the values within groups are not significantly different ().
Identical Roman numerals among groups with the same liquid volume and bone quality indicate that the values are not significantly different ().