Issues with teeth and jaw alignment that occur as a result of pacifier use prior to the age of 2 will typically be corrected within 6 months of ending pacifier use. Between the age of 3 - 4 years, many of the dental problems associated with excessive pacifier use are often minor and/or reversible. Once your child reaches 4 years of age, if they’re still using their pacifier, there’s greater potential for long-term developmental issues.