A 16-year-old girl came to a dentist complaining of darkened crowns of her teeth 11 and 12. According to the girl, about one year ago she had a sports trauma. Objectively, the crowns of teeth 11 and 12 are dark gray, intact, painless on percussion. The mucosa of the alveolar process is unchanged. X-ray shows round areas of bone tissue destruction in the region of the root apices of teeth 11 and 12. These bone lesions are 0.3-0.4 cm in diameter and have clear margins. What tactics would you choose?