Effects of Impacted Supernumerary Teeth on Adjacent Maxillary Central Incisors in Children and Adolescent Based on CBCT

doi:10.13701/j.cnki.kqyxyj.2023.06.007

Abstract

Abstract: Objective: To explore the effect of impacted supernumerary teeth in the anterior region on the development and eruption of adjacent maxillary central incisors in children and adolescents. Methods: This study retrospectively collected patients diagnosed with impacted supernumerary teeth in the maxillary central incisor region. To measure and compare the maxillary incisor tooth length, crown length, root length, angle with palatal plane, angle with median sagittal plane and height difference with occlusal plane of the affected maxillary central incisors and contralateral homonymous, CBCT images were obtained and analyzed using InVivo5 software, and the impacted side (case group) was compared to the normal side (control group). Results: Among the 201 patients included in the study, (1) no statistically significant difference in maxillary incisor crown length was found between the case group (11.00±1.09) mm and the control group (11.09±0.92) mm (P>0.05). (2) significant differences were found between the case group and the control group in root length (9.08±2.83) mm vs (9.75±2.82) mm, tooth length (20.08±2.92) mm vs (20.85±2.72) mm, and crown-root ratio 1.39±0.65 vs 1.28±0.58 (P<0.05). (3) the angle between the long axis of the incisor and the palatal plane was (112.7±12.8)°vs (117.3±11.3)° in the case and control groups respectively, with a statistically significant difference (P<0.05). (4) there was no statistically significant difference in the angle between the long axis of the tooth and the mid-sagittal plane, which was (7.4±18.3)°vs (7.3±11.4)° in the case and control groups respectively (P>0.05). (5) a statistically significant difference was observed between the two groups in the height difference of the maxillary incisor crown eruption, with a value of 2.01 mm (P<0.05).Conclusion: The presence of impacted supernumerary teeth in maxillary central incisor area affects normal development and eruption of adjacent maxillary central incisors.

Key words: supernumerary tooth, maxillary central incisor, cone beam computed tomography

CHEN Tao, MA Xiaowei, YAO Qin, SHI Yawei, WANG Dongmiao, CHENG Jie. Effects of Impacted Supernumerary Teeth on Adjacent Maxillary Central Incisors in Children and Adolescent Based on CBCT[J]. Journal of Oral Science Research, 2023, 39(6): 500-504.

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