What does 'intermittent' force refer to in orthodontics?

In orthodontics, 'intermittent' force refers to a force that is applied in cycles, with breaks occurring between these cycles. This method of application allows the teeth to respond to the orthodontic forces without causing excessive stress on the periodontal tissues. The periods of rest give the biologic tissues a chance to adapt and facilitate tooth movement, which can enhance treatment efficiency and minimize discomfort.

Using intermittent forces can be particularly advantageous in administering predictable tooth movement while reducing the risks associated with continuous force, such as root resorption or periodontal damage. By dividing the application into cycles, orthodontists can better manage the biological responses necessary for effective tooth alignment.