[Analysis of the diagnostic value of X-ray and CBCT 3D reconstruction in adolescent orthodontic patients with impacted teeth].

PURPOSE: To evaluate the value of X-ray and cone-beam CT(CBCT) three-dimensional reconstruction in the diagnosis of impacted teeth in adolescent orthodontic patients. METHODS: From May 2021 to May 2024, totally 86 adolescent orthodontic patients with 126 impacted teeth admitted to the Second Hospital of Baoding City were selected for X-ray examination and CBCT 3D reconstruction. The diagnostic efficiency and accuracy of the two methods were evaluated by comparing their ability to reveal the location and adjacent anatomical structures of the impacted teeth. SPSS 26.0 software package was used for statistical analysis of the data. RESULTS: Among the 126 impacted teeth, totally 40 cases (52 teeth) were in the maxillary anterior tooth region, 8 in the maxillary posterior region (12 teeth), 12 with maxillary supernumerary teeth (20 teeth), 14 in the mandibular anterior region (22 teeth), 8 in the mandibular posterior region (14 teeth), and 4 with mandibular supernumerary teeth (6 teeth). The results of CBCT 3D reconstruction were close to operation findings. CBCT 3D reconstruction was superior to X-ray films in most indexes, especially in sensitivity and positive predictive value, showing higher diagnostic efficiency. CONCLUSIONS: CBCT three-dimensional reconstruction provides high diagnostic value in the diagnosis of impacted teeth in adolescent orthodontic patients, especially in accurately assessing the position of impacted teeth.