The most common and reliable treatment for apical inflammation is root canal treatment. Root canal treatment is currently a more mature treatment method, the charges of each hospital are different, the general root canal treatment of anterior teeth in more than 400 dollars, premolar in more than 600 dollars, molar 800-900 dollars. Because hospitals are divided into primary, secondary and tertiary hospitals, and the charges in each region are also slightly different. If the lesion is more serious, the formation of apical cyst, apical granuloma. Generally, after root canal treatment, apical surgery is also performed, and apical surgery generally costs 200-400 dollars. If the root canal is performed under a microscope, there is an additional cost for the use of the microscope, which is usually an additional 600-700 dollars.