A 2-year-old child received a dental trauma. Objectively, the crowns of teeth 51 and 61 are shorter than the crowns of the adjacent teeth by 1/3. The mucosa in the area of teeth 51 and 61 is hyperemic and edematous. X-ray shows no periodontal fissure in the apical area of the roots of teeth 51 and 61. What treatment tactics would be optimal in this case?