Dental implants may be used for single tooth replacements to replace back teeth or front teeth. Since pleasing bone cosmetics need to be placed at the front of the teeth, the bone quality and quantity at the graft site must be high; otherwise, bone grafting may have to take place. Prior to the use of dental implants, patients would have had to resort to orthodontic therapy to replace missing front teeth. However, the replacement teeth will not look as realistic as the patient would have liked. Replacement crowns from dental implants look more natural and provide patients with beautiful smiles.