Which practice can contribute to malocclusion in children?

Thumb sucking can significantly contribute to malocclusion in children. This behavior can lead to the misalignment of teeth and issues with the proper development of the oral cavity. When children frequently suck their thumbs, it can cause the front teeth to protrude or the palate to become malformed, affecting how the upper and lower teeth come together. Over time, these changes can lead to various types of malocclusion, which are irregularities in the alignment of teeth.

In contrast, inadequate brushing can lead to dental decay and other oral health issues but does not directly relate to the positioning of teeth and jaws. Using toothpaste with fluoride is actually beneficial for dental health, helping to prevent cavities and strengthen tooth enamel. Regular dental check-ups are crucial for maintaining oral health and monitoring any developing issues, including malocclusion, rather than contributing to it.