下颌前磨牙区埋伏多生牙致邻牙牙根吸收的影响因素分析

doi:10.13591/j.cnki.kqyx.2026.09.010

Abstract

Abstract:

Objective To investigate the influencing factors of adjacent tooth root resorption caused by impacted supernumerary teeth in the mandibular premolar region. Methods A retrospective study was conducted on 231 patients (with a total of 260 impacted supernumerary teeth). Cone-beam computed tomography (CBCT) images were reconstructed three-dimensionally to analyze the factors associated with external root resorption of adjacent teeth. Results Among the 260 supernumerary teeth, root resorption of adjacent teeth was observed in 69 teeth, while no resorption was found in 191 teeth. Patient gender showed no significant correlation with root resorption. However, age, type of contact, three dimensional long-axis angle, and vertical position were significantly associated with root resorption. Conclusion Contact type, three-dimensional long-axis angle, vertical position, and age are independent risk factors for adjacent tooth root resorption induced by impacted supernumerary teeth in the mandibular premolar region, and should serve as important references for risk assessment and early intervention regarding supernumerary teeth in this area.

Key words: supernumerary teeth, root resorption, cone-beam CT, risk factors

CLC Number:

R783.5

ZHONG Wu, LU Hejia, XU Jiabin, ZHOU Meng. Analysis of risk factors for root resorption of adjacent teeth caused by impacted supernumerary teeth in the mandibular premolar region[J]. Stomatology, 2026, 46(9): 703-706.

Figures/Tables 6

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References 22

[1]	Albu ŞD, Pavlovici RC, Imre M, et al. Phenotypic heterogeneity of non-syndromic supernumerary teeth: Genetic study[J]. Rom J Morphol Embryol, 2021, 61(3): 853-861. doi: 10.47162/RJME
[2]	刘宪光, 张君, 李成龙, 等. 558例多生牙临床特点的回顾性分析[J]. 山东大学学报(医学版), 2017, 55(3):121-124.
[3]	Abbott PV, Lin S. Tooth resorption-Part 2: A clinical classifica-tion[J]. Dent Traumatol, 2022, 38(4): 267-285. doi: 10.1111/edt.v38.4
[4]	Bidwell JP, Fey EG, Marks SC Jr. Nuclear matrix-intermediate filament proteins of the dental follicle/enamel epithelium and their changes during tooth eruption in dogs[J]. Arch Oral Biol, 1995, 40(11): 1047-1051. pmid: 8670023
[5]	Marks SC Jr, Schroeder HE. Tooth eruption: Theories and facts[J]. Anat Rec, 1996, 245(2): 374-393. pmid: 8769674
[6]	Ericson S, Kurol PJ. Resorption of incisors after ectopic eruption of maxillary canines: A CT study[J]. Angle Orthod, 2000, 70(6): 415-423. doi: 10.1043/0003-3219(2000)070<0415:ROIAEE>2.0.CO;2 pmid: 11138644
[7]	Lai CS, Bornstein MM, Mock L, et al. Impacted maxillary canines and root resorptions of neighbouring teeth: A radiographic analysis using cone-beam computed tomography[J]. Eur J Orthod, 2013, 35(4): 529-538. doi: 10.1093/ejo/cjs037
[8]	Piattelli M, Piattelli A. Multiple impacted and erupted supernumerary premolars[J]. Acta Stomatol Belg, 1995, 92(2): 75-76. pmid: 8669358
[9]	Khalaf K, AlShehadat S, Murray CA. A review of supernumerary teeth in the premolar region[J]. Int J Dent, 2018, 2018: 6289047.
[10]	Permana H, Yusuf ASH, Alkaabi SA, et al. Post-surgical complications of supernumerary teeth in the mandibular premolar area: A systematic review[J]. Heliyon, 2024, 10(15): e35386. doi: 10.1016/j.heliyon.2024.e35386
[11]	O’Dowling I. Supernumerary pre-molar teeth in the mandible[J]. J Ir Dent Assoc, 2009, 55(6): 293-295. pmid: 20092204
[12]	Hyun HK, Lee SJ, Ahn BD, et al. Nonsyndromic multiple mandibular supernumerary premolars[J]. J Oral Maxillofac Surg, 2008, 66(7): 1366-1369. doi: 10.1016/j.joms.2007.08.028
[13]	Li YK, Zhang YM, Gao LP, et al. Risk prediction model of impacted supernumerary tooth-associated root resorption in children based on cone-beam computed tomography analysis: A case control study[J]. BMC Oral Health, 2024, 24(1): 920. doi: 10.1186/s12903-024-04493-2 pmid: 39123166
[14]	Zhang H, Gong XY, Xu XQ, et al. Tooth number abnormality: From bench to bedside[J]. Int J Oral Sci, 2023, 15: 5. doi: 10.1038/s41368-022-00208-x
[15]	Jiang Y, Ma XW, Wu YP, et al. Epidemiological, clinical, and 3-dimentional CBCT radiographic characterizations of supernumerary teeth in a non-syndromic adult population: A single-institutional study from 60 104 Chinese subjects[J]. Clin Oral Investig, 2020, 24(12): 4271-4281. doi: 10.1007/s00784-020-03288-3
[16]	Smailienè D, Trakinienè G, Beinorienè A, et al. Relationship between the position of impacted third molars and external root resorption of adjacent second molars: A retrospective CBCT study[J]. Medicina, 2019, 55(6): 305. doi: 10.3390/medicina55060305
[17]	Suter VGA, Rivola M, Schriber M, et al. Risk factors for root resorption of second molars associated with impacted mandibular third molars[J]. Int J Oral Maxillofac Surg, 2019, 48(6): 801-809. doi: 10.1016/j.ijom.2018.11.005
[18]	Baensch F, Meißner W, Will L, et al. Prevalence and predictive parameters of external root resorption caused by retained wisdom teeth[J]. Clin Oral Investig, 2024, 28(11): 583. doi: 10.1007/s00784-024-05964-0
[19]	Nemcovsky CE, Libfeld H, Zubery Y. Effect of non-erupted 3rd molars on distal roots and supporting structures of approximal teeth. A radiographic survey of 202 cases[J]. J Clin Periodontol, 1996, 23(9): 810-815. doi: 10.1111/j.1600-051x.1996.tb00616.x pmid: 8891930
[20]	Yatabe M, Gomes L, Ruellas AC, et al. Challenges in measuring angles between craniofacial structures[J]. J Appl Oral Sci, 2019, 27: e20180380.
[21]	王文茹, 赵霞, 张倩, 等. 儿童上颌前牙区多生牙CBCT影像学特征及其对邻近恒牙的影响[J]. 口腔医学研究, 2025, 41(11): 970-976. doi: 10.13701/j.cnki.kqyxyj.2025.11.008
[22]	Zhao LL, Liu SS, Zhang RX, et al. Analysis of the distribution of supernumerary teeth and the characteristics of mesiodens in Bengbu, China: A retrospective study[J]. Oral Radiol, 2021, 37(2): 218-223. doi: 10.1007/s11282-020-00432-3

变量	类别/参照组	无吸收组 (n=191)	有吸收组 (n=69)	χ²	P
性别	男	107	40	0.078	0.779
性别	女	84	29	0.078	0.779
年龄	<20岁	167	51	6.842	0.009^**
年龄	≥20岁	24	18	6.842	0.009^**
垂直位置	根颈1/3	55	6	11.656	0.003^**
	根中1/3	74	32
	根尖1/3	62	31
接触类型	无接触	78	4	39.641	<0.001^***
	点接触	63	21
	面接触	50	44

夹角分型	吸收度分型				合计	P
夹角分型	无	轻度	中度	重度	合计	P
<30°	49	2	1	0	52	<0.001
30~60°	50	26	4	2	82
>60°	14	11	15	4	44

变量	类别	回归系数	标准误	Wald χ²	P	OR	95%CI
年龄分组	<20岁(参照)						1.43~7.28
年龄分组	≥20岁	1.173	0.415	7.989	0.005	3.23	1.43~7.28
接触类型	无接触(参照)
	点接触	1.799	0.584	9.497	0.002	6.05	1.93~19.00
	面接触	2.852	0.568	25.192	<0.001	17.32	5.69~52.77
垂直位置	根颈1/3(参照)
	根中1/3	1.385	0.521	7.053	0.008	3.99	1.44~11.09
	根尖1/3	1.570	0.530	8.777	0.003	4.81	1.70~13.59

Analysis of risk factors for root resorption of adjacent teeth caused by impacted supernumerary teeth in the mandibular premolar region

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