Can teeth still be corrected at age 45?

Orthodontic treatment is possible at age 45. There is no strict upper age limit for orthodontics—as long as periodontal and overall health are good, orthodontic treatment can be initiated. In adults, alveolar bone remodeling occurs more slowly, resulting in a longer overall treatment duration. Recurrent gum swelling, pain, or tooth mobility warrants prompt medical evaluation to assess eligibility for orthodontic treatment.

Malocclusion, widely spaced teeth, and abnormal occlusion commonly seen in adulthood can all be effectively addressed through orthodontic treatment. By age 45, alveolar bone development is complete and bone remodeling proceeds more slowly than in adolescents, thus extending the required treatment time. Provided there is no severe periodontitis or advanced alveolar bone resorption—and general health remains stable—orthodontic treatment is feasible and beneficial for optimizing dental alignment and occlusal function.

In clinical practice, orthodontic plans for adults are tailored to their unique oral characteristics, emphasizing gentle, low-force appliances to gradually reposition teeth. For patients with mild periodontal inflammation, foundational periodontal therapy is performed first to stabilize gingival and alveolar bone health. Tooth movement is then carried out progressively and carefully to minimize mechanical stress on teeth, thereby reducing risks such as root resorption and tooth mobility.

Diligent daily oral hygiene—including thorough cleaning of both teeth and orthodontic appliances—along with consistent dietary habits and regular sleep patterns, helps maintain periodontal stability and supports gradual, physiological bone remodeling, ensuring smooth and steady progress throughout orthodontic treatment.