A 28-year-old patient complains of aesthetical defect. Objectively the crowns of 12, 11, 21, 22, and 23 are destroyed by caries by over 2/3 of their heights. The patient has orthognathic occlusion. X- ray shows the root canals of these teeth to be completely filled; no pathologic changes detected in the periapical tissues. What approach to teeth restoration would be optimal in this case?