It is important to recognize the limitations of this method. Let's delve into why aligners might not always be the most efficient tool for arch expansion:

**Efficiency Challenges:**
1. **Limited Movement:** Aligners can struggle with generating the necessary forces to effectively expand the dental arch, especially in cases of significant crowding or skeletal discrepancies.
2. **Dependence on Compliance:** Even with perfect wear, aligners have inherent limitations in their ability to push teeth outward consistently and predictably.
3. **Longer Treatment Times:** Due to the gentler and less forceful nature of aligners, achieving desired results might require more time compared to conventional methods, particularly for substantial expansions.