Thumb, finger or dummy sucking is a common and comforting habit for babies and toddlers. It helps them feel secure and can be a useful way for young children to self-soothe. However, when this habit continues beyond the early years, it can begin to affect how the teeth, jaws and face develop, as well as how a child breathes, swallows and speaks.
The mouth is a dynamic space; the lips, cheeks and tongue constantly apply gentle forces that shape the growth of the jaws and the position of the teeth. When a child sucks on their thumb, finger or dummy for long periods, it changes these natural pressure patterns. Over time, this can cause narrowing of the upper jaw (palate), protrusion of upper front teeth and can cause the lower front teeth to tilt back, creating an open bite or overjet (“buck teeth”).
The impact of prolonged sucking habits goes beyond tooth alignment. It also influences the way a child uses their tongue, lips and breathing muscles; known collectively as oral function.
Common oral dysfunctions include: Low tongue posture, incorrect swallow pattern and mouthbreathing.
These functional changes can, in turn, reinforce the structural ones — creating a cycle that continues to affect growth if not addressed early.
The good news is that the earlier these habits are identified and guided, the easier it is to support healthy development. Most children will naturally stop sucking by preschool age, but if the habit continues beyond age four, gentle intervention may be needed.
If you’re concerned about your child’s oral habits or jaw development, our team at Be Well Dental is here to help. We can assess your child’s growth, discuss strategies to stop the habit gently, and guide you through treatment options that encourage healthy facial and airway development. Book a consultation today to start your child on the path to lifelong oral health and wellbeing.