CBCT Imaging Characteristics of Supernumerary Teeth in Maxillary Anterior Region of Children and Their Impact on Adjacent Permanent Teeth

doi:10.13701/j.cnki.kqyxyj.2025.11.008

Abstract

Abstract: Objective: To analyze the CBCT imaging characteristics of supernumerary teeth in the maxillary anterior region and their effects on adjacent permanent teeth. Methods: CBCT imaging data of supernumerary teeth in the maxillary anterior region of children were retrospectively collected. SPSS 24.0 statistical software was used to analyze the gender, age, number, location, direction, shape, and eruption status of the supernumerary teeth, as well as to evaluate their effects on adjacent permanent teeth. Results: A total of 377 children were included in this study. The male-to-female ratio was 3.5∶1, with an average age of (6.69±1.35) years. The analysis revealed the following findings: (1)The number of supernumerary teeth was mainly 1 (65.3%) and 2 (32.6%),with no statistically significant difference in their distribution between genders (P>0.05). (2) Unerupted supernumerary teeth were predominant (83.8%), mainly located in the midline area (41.4%) and the central incisor area (53.5%), with most being situated on the palatal side of the dental arch (76.3%). (3) The inverted growth (45.6%) and conical (73.2%) forms were the most common.(4) The primary effects of supernumerary teeth on adjacent permanent teeth included diastema (31.9%), delayed eruption (7.5%), displacement (5.5%), and rotation (9.5%). Supernumerary teeth in the midline area, within the dental arch, and growing laterally were more prone to causing diastema in permanent teeth (P<0.05). Delayed eruption of permanent teeth was more frequently observed with supplementary, nodular, and odontoma types of supernumerary teeth (P<0.05). Supernumerary teeth causing rotation of permanent teeth were predominantly located within the dental arch or on the labial side, and grew horizontally or laterally (P<0.05). Conclusion: CBCT technology enables precise analysis of the imaging features of supernumerary teeth, offering significant clinical guidance for the diagnosis and localization of these teeth.

Key words: maxillary anterior region, supernumerary teeth, CBCT

WANG Wenru, ZHAO Xia, ZHANG Qian, LING Jing, SUN Shasha. CBCT Imaging Characteristics of Supernumerary Teeth in Maxillary Anterior Region of Children and Their Impact on Adjacent Permanent Teeth[J]. Journal of Oral Science Research, 2025, 41(11): 970-976.

References

[1] 彭博,曾素娟,葛林虎.多生牙的研究进展[J].口腔医学研究,2018,34(2): 209-212.
[2] 郑佳佳,丁美丽,吴佳琪,等.儿童非综合征型上颌前牙区多生牙X线片回顾性分析[J].口腔医学研究,2022,38(7): 622-627.
[3] 范永晶,王姝.160例多生牙锥形束CT回顾性分析[J].实用口腔医学杂志,2022,38(5): 613-617.
[4] 贺莉丹,阙国鹰.非综合征性多生牙的研究进展[J].北京口腔医学,2023,31(1):73-76.
[5] 刘晓琳,任群,白九平,等.基于锥形束CT的1 138颗多生牙影像学特征分析[J].华西口腔医学杂志,2023,41(6): 671-677.
[6] 文陈妮,李果,任家银,等.锥形束CT诊断上颌前牙区多生牙价值研究[J].华西口腔医学杂志,2012,30(4): 399-401.
[7] 陈涛,马晓威,姚琴,等.儿童和青少年上颌前牙区埋伏多生牙对邻近中切牙发育萌出影响的CBCT影像学分析[J].口腔医学研究,2023,39(6): 500-504.
[8] De Oliveira Gomes C, Drummond SN, Jham BC, et al. A survey of 460 supernumerary teeth in Brazilian children and adolescents[J]. Int J Paediatr Dent, 2008, 18(2):98-106.
[9] Hong J, Lee DG, Park K. Retrospective analysis of the factors influencing mesiodentes eruption[J]. Int J Paediatr Dent, 2009, 19(5):343-348.
[10] Ma X, Jiang Y, Ge H, et al. Epidemiological, clinical, radiographic characterization of non-syndromic supernumerary teeth in Chinese children and adolescents[J]. Oral Dis, 2021, 27(4): 981-992.
[11] Chou ST, Chang HP, Yang YH, et al. Characteristics of supernumerary teeth among nonsyndromic dental patients[J]. J Dent Sci, 2015, 10(2): 133-138.
[12] Jung YH, Kim JY, Cho BH. The effects of impacted premaxillary supernumerary teeth on permanent incisors[J]. Imaging Sci Dent, 2016, 46(4): 251-258.
[13] Pippi R. Odontomas and supernumerary teeth: Is there a common origin?[J]. Int J Med Sci, 2014, 11(12): 1282-1297.
[14] 沙震宇,王了.上颌前牙区多生牙临床特征及拔除时机选择[J].口腔医学研究,2020,36(10): 902-904.
[15] Patil S, Pachori Y, Kaswan S, et al. Frequency of mesiodens in the pediatric population in North India: A radiographic study[J]. J Clin Exp Dent, 2013, 5(5): e223-e226.
[16] Finkelstein T, Shapira Y, Pavlidi AM, et al. Prevalence and characteristics of supernumerary teeth in israeli orthodontic patients[J]. J Clin Pediatr Dent, 2019, 43(4): 244-251.
[17] Leyland L, Batra P, Wong F, et al. A retrospective evaluation of the eruption of impacted permanent incisors after extraction of supernumerary teeth[J]. J Clin Pediatr Dent, 2006, 30(3): 225-232.
[18] Shih WY, Hsieh CY, Tsai TP. Clinical evaluation of the timing of mesiodens removal[J]. J Chin Med Assoc, 2016, 79(6): 345-350.
[19] He D, Mei L, Wang Y, et al. Association between maxillary anterior supernumerary teeth and impacted incisors in mixed dentition[J]. J Am Dent Assoc, 2017, 148(8): 595-603.