2022 Volume 60 Issue 3 Pages 141-147
An 11-year 7-month-old boy came to the pediatric dentistry clinic of the Tokyo Medical and Dental University after a traumatic injury to the jaw 20 days ago. Traumatized teeth were accompanied by increased mobility, percussion pain, and periodontal pocket depth (PPD) of 5 mm. Radiographic examination showed that the left lower lateral incisor had a cervical fracture (root fracture and crown-root fracture). The initial treatment plan was repositioning and splinting of the coronal fragment. After repositioning the incisor, fixation with stainless steel square wire bonded with self-curing resin was performed immediately after cleaning the injured area. One month after the injury, the inflammatory symptoms of the periodontal tissue had improved. After two years of regular follow-up examinations and management, radiographic examination showed radiopacity in the pulp and part of the fractured line. The left lower lateral incisor responded normally to the vitality test. Clinical examination 17 years later revealed that the cervical fractured tooth had been preserved by repositioning, fixation, and thorough oral hygiene management. In addition, continued application of fixation while changing the anchorage unit so as not to inhibit jaw growth and tooth replacement to avoid new trauma enabled long-term tooth preservation.
