Australian Dental Council (ADC) Practice Test 2026 - Free ADC Practice Questions and Study Guide

The primary use of a helical spring in dentistry is predominantly in orthodontic alignment. Helical springs are devices that provide continuous, gentle forces to teeth to facilitate their movement. In orthodontics, they are employed to help correct misalignments by exerting pressure that guides teeth into their desired positions over time.

While a helical spring might indirectly assist in cases involving ectopically erupting permanent molars by creating space or applying corrective forces, orthodontic alignment encompasses a broader range of applications. This includes the movement of teeth, expansion of dental arches, and general adjustment of occlusion, which are fundamental goals in orthodontic treatment.

The other options, such as creation of dental impressions and retention of temporary restorations, pertain to different dental procedures and appliances, where helical springs are not utilized in the same manner or for the same purpose as in orthodontic applications. Thus, the context and functionality of helical springs make their primary use clear in the realm of orthodontics, particularly concerning alignment.