Best dentist in Adambakkam | Effects of Thumb Sucking and Pacifier Use While thumb sucking and pacifiers are natural soothing habits for infants, prolonged use can affect oral health. If these habits continue beyond the age of 3–4, they may lead to: • Misaligned teeth or bite issues • Improper jaw development • Speech difficulties • Changes in the roof of the mouth At Dr. Akkshaya Dental & Aesthetics, we help parents identify early signs and offer gentle, child-friendly solutions to protect your little one’s smile.