Evidence from clinical studies consistently demonstrates that prolonged nonnutritive sucking habits, such as thumb and finger sucking, are associated with negative dental outcomes including malocclusion and anterior open bite.
The retrieved literature consistently supports the claim that nonnutritive sucking habits like thumb sucking contribute to adverse dental developmental outcomes, specifically malocclusions. Multiple studies (indices 1, 3, 5, 8, 10) link these habits to structural dental changes. No papers refute this relationship, leading to a SUPPORTED verdict.