Pressure Tension Theory
Write a short note on pressuretension theory.
Answer. It is one of the theories of tooth movement
- Pressure-Tension theory was given by Schwarz in 1932.
- Although Sandstedt (1904) and Oppenheim (1911) investigated the phenomenon of tooth movement by histological examination of the supporting structure, Schwartz is credited with the Pressure-Tension theory which has been widely accepted.
- Whenever a tooth is subjected to the orthodontic force, it leads to the areas of pressure and tension.
- Areas of the periodontium in the direction of tooth movement are under pressure while area of the periodontium opposite to tooth movement is under tension.
- According to Schwarz, areas of pressure show bone resorption while areas of tension show bone deposition.
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