Int J Stomatol ›› 2023, Vol. 50 ›› Issue (1): 61-65.doi: 10.7518/gjkq.2023014

• Original Articles • Previous Articles     Next Articles

Clinical data analysis of 458 cases of supernumerary teeth in the upper incisor area

Liu Xiaolin(),Ren Qun,Gao Xiaozhe,Bai Jiuping,Wang Yu,Li Xiangjun.()   

  1. Dept. of Oral and Maxillofacial Surgery, School and Hospital of Stomatology, Hebei Medical University, Hebei Key Laboratory of Stomatology, Hebei Clinical Research Center for Oral Diseases, Shijiazhuang 050017, China
  • Received:2022-04-05 Revised:2022-09-09 Online:2023-01-01 Published:2023-01-09
  • Contact: Xiangjun. Li;
  • Supported by:
    Medical Science Research Project in Hebei Province(20191067);Science and Technology Research Project of Colleges and Universities in Hebei Province(QN2021105)


Objective This study aims to analyze and summarize the clinical characteristics of supernumerary teeth in the upper incisor area, and provide a reference for its diagnosis and treatment. Methods A total of 458 patients were collected from the Department of Oral and Maxillofacial Surgery, Hospital of Stomatology, Hebei Medical University. Herein, their age, sex, number of supernumerary teeth, direction, reasons, anesthesia methods, and operation time were statistically analyzed using the SPSS21.0 software package. Results There were 710 supernumerary teeth in 458 patients with an average age of (8.64±4.31) years, and the male-to-female ratio was 3.63:1. The number of children is the largest with 387 cases (84.50%). A total of 231 cases (50.44%) had two supernumerary teeth and 218 cases (47.60%) had one supernumerary tooth. A total of 362 (50.99%) were in an inverted position. Among the clinical manifestations, 153 cases (33.41%) were found by unintentional imaging examination. Meanwhile, 390 cases (85.15%) chose general an-esthesia. The mean operation time was (23.42±13.95) min. There was no statistical difference observed in the number, direction, and eruption state of the supernumerary teeth between different sexes (P>0.05). There was no significant difference in the number of supernumerary teeth among different age groups (P>0.05). However, there were significant differences observed in the direction and eruption status of supernumerary teeth among different age groups (P<0.05). Conclusion The supernumerary teeth in the upper incisor area are more common in childhood, and the incidence of male teeth is higher than that of female teeth, which are often found accidentally by patients, particularly one or two teeth, mainly in an inverted position.

Key words: supernumerary teeth, upper incisor, clinical analysis, number, direction

CLC Number: 

  • R 781


Tab 1

Statistics of basic information for patients with supernumerary teeth"


Tab 2

Analysis of the number, direction and eruption state of different genders and supernumerary teeth"


Tab 3

Analysis of the number, direction and eruption state of supernumerary teeth in different age groups"

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