2023 年 35 巻 2 号 p. 46-52
Three-dimensional imaging may aid in complementing intraoral and panoramic radiography during the diagnosis of tooth eruption disturbances. The purpose of this study was to investigate teeth affected by eruption disturbances in patients referred for cone-beam computed tomography （CBCT）. The analysis included 134 teeth in 113 patients ＜20 years of age who demonstrated tooth eruption disturbances （excluding wisdom teeth） and were referred for CBCT imaging. Factors analyzed included: （1） the types of teeth affected by eruption disturbances; （2） distribution of eruption disturbances by age and gender; （3） CBCT image findings; and （4） treatment plan and prognosis. The analysis included 126 permanent and eight deciduous teeth. The maxillary canines were the most frequently affected （44 teeth, 32.8％）, followed by the maxillary central incisors （23 teeth, 17.2％）. The most typical etiological factors discovered through the CBCT images were abnormalities in the position and direction of the teeth （66 teeth, 49.3％）, followed by the presence of cysts and benign tumors （28 teeth, 20.9％） and supernumerary teeth （16 teeth, 11.9％）. Treatment included removal of the cause and implementation of treatment measures such as fenestration-traction. The outcomes of this research conformed with prior evidence concerning the causative factors of eruption disturbances and the distribution by types of teeth. CBCT imaging has considerably contributed to enhancing the quality of medical care via three-dimensional evaluation of the condition of different teeth affected by eruption disturbances and their subsequent management.
