At the age of 27, if your oral health is in good condition, you can undergo orthodontic treatment known as orthodontics. The treatment options available include labial fixed orthodontics, lingual fixed orthodontics, invisible removable orthodontics, etc. as follows. Adults can undergo orthodontic treatment as the alveolar bone is still remodelable. Prior to treatment, good oral health is required, including no progressive periodontitis, no pulpitis and apical periodontitis, no large dental defects, no severe alveolar bone resorption, and no jawbone tumors. Commonly used orthodontic treatments include labial fixed orthodontics, lingual fixed orthodontics, and invisible removable orthodontics, of which lingual fixed orthodontics and invisible removable orthodontics are more aesthetically pleasing and can meet the aesthetic needs of adults for daily work and socialization. For the same disease, patients with different conditions choose different treatment modalities, and it is recommended to visit regular medical institutions to receive professional treatment.