Risk Factors for Adjacent Structural Influence Caused by Single Buried Supernumerary Tooth in Upper Incisor Area

doi:10.13701/j.cnki.kqyxyj.2025.07.006

Abstract

Abstract: Objective: To explore the risk factors that may affect adjacent structures by analyzing the characteristics of cone-beam computed tomography (CBCT) in patients with single impacted supernumerary teeth in the upper incisor area. Methods: CBCT was observed in 182 patients with single impacted supernumerary teeth in the upper incisor area, and statistical analysis was conducted on the morphology, direction, position, root development, and impact on adjacent structures of supernumerary teeth. Results: The impact of supernumerary teeth on adjacent structures was related to the patient's age, the horizontal position of supernumerary teeth, and the development of adjacent tooth roots (P<0.05). It was not related to the patient's gender, morphology, orientation, vertical position, sagittal position, or root development of supernumerary teeth (P>0.05). Moreover, the horizontal position of supernumerary teeth located between 11-21 was more likely to affect adjacent structures compared to those located between 12-11 and 21-22 (P<0.05, OR=0.342/0.387). When the root development of adjacent teeth reached stages 7 and 8, compared to when the root development of adjacent teeth was complete, supernumerary teeth were more likely to have severe effects (P<0.05, OR=0.027/0.525). Conclusion: When single impacted supernumerary tooth is located horizontally between 11-21 in the upper incisor area, and when the root of adjacent teeth develops to stage 7 or 8, supernumerary teeth should be removed as early as possible to prevent them from affecting adjacent structures.

Key words: single supernumerary tooth, upper incisor area, adjacent structures, risk factors, CBCT

LIU Xiaolin, REN Qun, LI Mingyang, ZHANG Xiao, LIU Wenjing, FENG Xiaowei. Risk Factors for Adjacent Structural Influence Caused by Single Buried Supernumerary Tooth in Upper Incisor Area[J]. Journal of Oral Science Research, 2025, 41(7): 574-580.

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