Because the insurance systems are different, direct comparisons can be difficult. For many routine treatments, Japan may feel less expensive because patients generally pay a standardized portion of covered costs. With U.S. dental insurance, however, preventive services may be covered at 80% to 100%, and some tooth-colored restorations or crowns that may not be covered under Japanese insurance can receive partial coverage. Orthodontic fees and insurance benefits also vary, so depending on the treatment and insurance plan, care in the United States may sometimes be less expensive.