Stomatology ›› 2023, Vol. 43 ›› Issue (8): 717-721.doi: 10.13591/j.cnki.kqyx.2023.08.009

• Clinical Research • Previous Articles     Next Articles

A retrospective study on 815 maxillary supernumerary teeth in children

CHEN Yun1,CAO Ling1,WANG Yaxin2,YU Jiannan1()   

  1. Department of Pediatric and Preventive Dentistry,The Affiliated Stomatological Hospital of Nanjing Medical University, Jiangsu Province Key Laboratory of Oral Diseases, Jiangsu Province Engineering Research Center of Stomatological Translational Medicine, Nanjing 210029, China
  • Revised:2023-01-05 Online:2023-08-28 Published:2023-08-23

Abstract:

Objective To study the three-dimensional characteristics of anterior maxillary supernumerary teeth in children and their effects on permanent teeth. Methods Based on clinical and CBCT data, retrospective analysis was conducted in aspects of the age, gender, location, number, shape, eruption and effect on permanent anterior teeth of 815 maxillary supernumerary teeth from 594 children. Results There were 815 supernumerary teeth in the anterior maxilla in 594 children, whose average age was 7.98, and the male to female ratio was 3.37:1. One supernumerary tooth was most common(63.97%). Conical shape was much more than others; 84.54% among them were mesiodens, and the crowns located at the palatal side accounted for 78.28%. A total of 440 supernumerary teeth were in inverted direction(53.99%). Most supernumerary teeth were unerupted or impacted, and the eruption rate was 20.61%. There were 555 supernumerary teeth which caused malocclusion(68.10%). Cystic changes and root resorption of permanent teeth were respectively found in 23 cases and 14 cases. Conclusion Maxillary anterior supernumerary teeth in children are prone to malocclusion and need to be removed in time.

Key words: supernumerary tooth, CBCT, malocclusion, retrospective analysis

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