Co-operation, co-ordination and interaction between different specialties in dentistry are extremely important in establishing diagnosis and treatment planning. In many cases, periodontal health is improved by orthodontic tooth movement, whereas orthodontic tooth movement is often facilitated by periodontal therapy. The primary objective of periodontal therapy is to restore and maintain the health and integrity of periodontium. Adjunctive orthodontic therapy can enhance the periodontal health and restorability of teeth. Adult patients present a challenge to orthodontists because they have high esthetic demands and they often have dental conditions that may complicate treatment, such as tooth wear, poorly contoured restorations, and periodontal defects. These defects can be improved during orthodontic therapy if orthodontist is aware of situation and plan the appropriate tooth movement accordingly. The key to treating these patients is communication and proper diagnosis before orthodontic therapy, as well as continued dialog during orthodontic treatment.