A 20-year-old patient got a trauma in the area of his upper jaw. He applied to a dentist and complained about mobility of his frontal upper teeth, pain during cutting and joining of teeth. Objectively: the 11 and 21 teeth have II-III-degree mobility. Tooth crowns are intact but have oral position. Complete joining of teeth is impossible because the teeth are situated beyond the dental arch. X-ray picture shows a slight broadening of periodontal fissure of the 11 tooth up to 0,5-2 mm. The roots are intact. Make a correct diagnosis: