Which habit is known to cause malocclusion?

Tongue thrusting is a habit where the tongue protrudes through the front teeth, especially when swallowing, speaking, or at rest. This habit can disrupt the normal alignment of the teeth and the relationship between the upper and lower jaws, leading to malocclusion. Malocclusion refers to the misalignment of teeth and can result in various dental issues, including difficulty in biting and chewing, increased wear on teeth, and even speech problems. Because tongue thrusting places pressure on the teeth inappropriately, it can encourage improper positioning as the teeth and jaws develop, making it a significant contributor to malocclusion.

In contrast, regular dental check-ups are essential for monitoring oral health and preventing problems but do not contribute to malocclusion. Using fluoride toothpaste is beneficial for cavity prevention and overall dental health and does not impact the alignment of teeth. Wearing a retainer is often used post-orthodontic treatment to maintain teeth in their corrected positions, thereby helping to prevent malocclusion rather than causing it. Therefore, tongue thrusting is specifically recognized for its role in creating or exacerbating alignment issues in dental occlusion.