The treatment time with clear aligners will depend on the case. On average, it may take 12 months to see results. However, depending on the severity of the case, it could take less or more time. Some cases may take as short as six months, while other cases could take up to 18 months. The best way to know how long your treatment will take is to consult with your dentist. They will be able to give you a more accurate estimate based on your specific case.