Journal of Prevention and Treatment for Stomatological Diseases ›› 2016, Vol. 24 ›› Issue (5): 288-292.doi: 10.12016/j.issn.2096-1456.2016.05.006

• Clinical Study • Previous Articles     Next Articles

Influence of impacted maxillary central incisor on craniofacial structure and its orthodontic treatment

LEI Lang,KE Xiao-jing,LI Hou-xuan(),LI Huang,YAN Fu-hua   

  1. Nanjing Stomatological Hospital & the Affiliated Stomatological Hospital of Medical School of Nanjing University, Nanjing 210008, China
  • Received:2015-08-30 Revised:2015-11-04 Online:2016-05-20 Published:2016-05-20
  • Contact: Hou-xuan LI E-mail:lihouxuan3435_0@163.com

RichHTML

6

PDF (PC)

886

Abstract:

Objective To explore the influence of impacted maxillary central incisor on craniofacial structure and its orthodontic treatment. Methods A total of 63 subjects with impacted upper central incisors were selected and categorized into the mixed (n=32) and permanent dentition group (n=31). By using the lateral cephalograms of each subject, 15 angular and 6 linear measurements were made. The cephalometric data were analyzed and compared to data of its corresponding control group with normal occlusion. Results Among the etiological factors of all 63 cases with impacted upper incisors, supernumerary teeth, dentigerous cyst or odontoma, mechanical trauma and idiopathic factors comprise of 6.3%, 6.3%, 12.4% and 73% respectively. Cephalometric analysis demonstrated a more retruded position of "A" point with decreased SNA and ANB angle in incisor impaction group. Dental compensations followed the decreased ANB angle with more proclined upper incisor and more upright lower incisor. In early stage of root development (stage 7 and 8 of Nolla's method), 12 out of 13 incisors were tracted successfully, whereas in late stage( stage 9 and 10), 7 out of 15 incisors were extracted. Conlusions Upper central incisor impaction adversely influences maxillary development. Early orthodontic treatment can improve successful rate and gain a better root morphology.

Key words: Impacted tooth, Central incisor, Orthodontics, Cephalometry, Dental age

CLC Number: 

  • R783.5

"

项目 混合牙列 恒牙列
埋伏组 对照组 埋伏组 对照组
数量(例) 32(男13,女19) 72(男36,女36) 31(男9,女22) 70(男30,女40)
年龄(岁) 9.61±1.37 9.60±1.15 15.83±3.77 20.30±1.56

"

项目 总数 囊肿和牙瘤 多生牙 外伤 不明原因
病例数 63 4(6.3) 4(6.3) 9(14.2) 46(73.0)

"

项目 混合牙列 恒牙列
阻生组 对照组 阻生组 对照组
骨骼矢状向 SNA(°) 78.61±3.30 1) 81.00±3.90 82.13±3.29 1) 83.21±2.80
SNB(°) 76.98±3.53 77.50±3.60 79.67±3.80 80.40±2.82
ANB(°) 1.62±2.52 1) 3.50±1.80 2.48±2.32 1) 3.86±1.74
NPog-FH(°) 83.55±2.86 83.50±3.60 84.97±3.39 85.59±2.33
面突角(°) 4.03±5.74 1) 7.60±4.20 5.52±6.17 1) 7.67±4.06
骨骼垂直向 MP-FH(°) 29.81±4.30 29.50±5.50 28.64±6.37 26.99±3.90
MP-SN(°) 34.56±4.27 # 32.47±5.99 31.37±3.32
OP-FH(°) 17.58±6.93 15.60±4.30 15.40±6.65 11.61±4.11
Y-axis(°) 64.12±2.76 65.20±3.80 63.92±3.74 62.52±2.65
牙性指标 U1-SN(°) 106.94±5.99 1) 104.80±5.30 109.87±7.70 1) 106.90±5.50
U1-NA(°) 37.15±7.16 1) 22.40±5.20 35.47±7.42 1) 32.34±5.48
U1-NA长(mm) 5.38±1.94 # 5.59±1.81 5.05±2.34
L1-NB(°) 35.87±6.46 # 35.17±5.65 1) 39.49±6.94
L1-NB长(mm) 5.62±1.97 # 6.05±1.89 6.12±2.12
L1-MP(°) 95.86±6.90 96.20±5.80 95.29±5.63 1) 100.03±6.36
U1-L1(°) 122.63±7.93 122.70±7.80 122.43±9.34 124.68±7.53
覆盖(mm) 1.26±2.75 # 2.62±2.28 2.90±1.20
覆牙合(mm) 0.32±1.46 # 2.06±1.44 1.62±1.27
软组织 Ls-E线(mm) 0.54±2.85 1) 2.50±1.33 0.40±3.44 -0.10±2.18
Li-E线(mm) 2.14±3.00 3.00±1.74 2.45±2.48 1.23±2.15
Z角(°) 74.87±6.05 1) 69.77±5.17 75.97±7.41 74.24±4.22

"

"

[1] Topouzelis N, Tsaousoglou P, Gofa A . Management of root dilaceration of an impacted maxillary central incisor following orthodontic treatment: an unusual therapeutic outcome[J]. Dent Traumatol, 2010,26(6):521-526.
doi: 10.1111/edt.2010.26.issue-6
[2] de Oliveira Ruellas AC, Mattos CT . Multidisciplinary approach to a traumatized unerupted dilacerated maxillary central incisor[J]. Angle Orthod, 2012,82(4):739-947.
doi: 10.2319/081711-525.1
[3] 王悦, 李锦标, 李洪发 . 天津市72例替牙期正常牙合儿童颅牙合面硬组织特征研究[J]. 北京口腔医学, 2003,11(4):214-216.
[4] 王悦, 李锦标 . 天津市替牙期正常牙合儿童软组织侧貌特征研究[J]. 现代口腔医学杂志, 2003,17(4):331-333.
[5] 钟萍萍, 张端强, 胡志坚 . 福建地区正常牙合成年人的牙颌面X线头影测量研究[J]. 福建医科大学学报, 2009,43(5):387-388.
[6] Jafarzadeh H, Abbott PV . Dilaceration: review of an endodontic challenge[J]. J Endod, 2007,33(9):1025-1030.
doi: 10.1016/j.joen.2007.04.013
[7] Topouzelis N, Tsaousoglou P, Pisoka V , et al. Dilaceration of maxillary central incisor: a literature review[J]. Dent Traumatol, 2010,26(5):427-433.
doi: 10.1111/j.1600-9657.2010.00915.x
[8] 韩爽, 唐旭炎 . 上颌前牙埋伏阻生的研究进展[J]. 广东牙病防治, 2010,18(5):272-274.
[9] Tsai TP . Surgical repositioning of an impacted dilacerated incisor in mixed dentition[J]. J Am Dent Assoc, 2002,133(1):61-66.
doi: 10.14219/jada.archive.2002.0022
[10] Filippi A, Pohl Y, Tekin U . Transplantation of displaced and dilacerated anterior teeth[J]. Endod Dent Traumatol, 1998,14(2):93-98.
doi: 10.1111/edt.1998.14.issue-2
[11] Maia RL, Vieira AP . Auto-transplantation of central incisor with root dilaceration. Technical note[J]. Int J Oral Maxillofac Surg, 2005,34(1):89-91.
[12] Valladares NJ, de Pinho Costa S, Estrela C . Orthodontic-surgical-endodontic management of unerupted maxillary central incisor with distoangular root dilaceration[J]. J Endod, 2010,36(4):755-759.
doi: 10.1016/j.joen.2009.12.032
[13] 王臻, 高翔, 张家胜 . 正畸矫治埋伏阻生上颌前牙的临床研究[J]. 广东牙病防治, 2007,15(8):378-379.
[14] Nur B, Kusgoz A, Bayram M , et al. Validity of demirjian and nolla methods for dental age estimation for Northeastern Turkish children aged 5-16 years old[J]. Med Oral Patol Oral Cir Bucal, 2012,17(5):871-877.
[15] Xuan K, Zhang YF, Liu YL , et al. Comprehensive and sequential management of an impacted maxillary central incisor with severe crown-root dilacerations[J]. Dent Traumatol, 2010,26(6):516-520.
doi: 10.1111/edt.2010.26.issue-6
[16] Becker A . Early treatment for impacted maxillary incisors[J]. Am J Orthod Dentofacial Orthop, 2002,121(6):586-587.
doi: 10.1067/mod.2002.124171
[17] Stewart DJ . Dilacerate unerupted maxillary central incisors[J]. Br Dent J, 1978,145(8):229-233.
doi: 10.1038/sj.bdj.4804154
[18] Acharya PN, Jones SP, Moles D , et al. A cephalometric study to investigate the skeletal relationships in patients with increasing severity of hypodontia[J]. Angle Orthod, 2010,80(4):511-518.
[19] Endo T, Ozoe R, Yoshino S , et al. Hypodontia patterns and variations in craniofacial morphology in Japanese orthodontic patients[J]. Angle Orthod, 2006,76(6):996-1003.
doi: 10.2319/082905-303
[20] Sun H, Wang Y, Sun C , et al. Root morphology and development of labial inversely impacted maxillary central incisors in the mixed dentition: a retrospective cone-beam computed tomography study[J]. Am J Orthod Dentofacial Orthop, 2014,146(6):709-716.
doi: 10.1016/j.ajodo.2014.07.026
[1] WU Kunji,KONG Weidong. Application of an individualized appliance in orthodontic treatment [J]. Journal of Prevention and Treatment for Stomatological Diseases, 2019, 27(2): 132-144.
[2] YANG Pingzhu,WEN Xiujie. Research Progress on regarding the torque control of upper anterior teeth with a lip appliance [J]. Journal of Prevention and Treatment for Stomatological Diseases, 2019, 27(2): 122-126.
[3] LI Song,SU Rugan. Application of digital technology in orthodontic clinic [J]. Journal of Prevention and Treatment for Stomatological Diseases, 2019, 27(2): 69-73.
[4] ZHONG Lidong,KONG Weidong. Factors related to the control of maxillary anterior teeth torque in invisible appliances [J]. Journal of Prevention and Treatment for Stomatological Diseases, 2019, 27(1): 56-60.
[5] Junping LIU, Jinhua WU, Jinju HUANG. Application of T-shaped splitting method in the extraction of lower-level horizontal-impacted mandibular third molars [J]. Journal of Prevention and Treatment for Stomatological Diseases, 2018, 26(7): 468-471.
[6] Yang CAO, Zhuannong ZHAO. Clinical advances in corticotomy-assisted orthodontic treatments [J]. Journal of Prevention and Treatment for Stomatological Diseases, 2018, 26(4): 205-210.
[7] Zhengquan HE, Kai YANG. Expression of hypoxia-inducible factor 1α in the pressure-side periodontium during orthodontic tooth movement in rats [J]. Journal of Prevention and Treatment for Stomatological Diseases, 2018, 26(4): 227-230.
[8] Chao WANG, Renfa LAI. Research progress on methods of relieving orthodontic pain [J]. Journal of Prevention and Treatment for Stomatological Diseases, 2018, 26(2): 133-136.
[9] Zeren GUAN, Shuting LI, Guojian LIANG, Shaohai CHANG. Clinical application of painless oral anesthesia instrument combined with piezosurgery in the orthodontic traction of impacted maxillary anterior teeth [J]. Journal of Prevention and Treatment for Stomatological Diseases, 2017, 25(9): 596-599.
[10] Feng WU, Junfang LI, Zhen WANG, Zhenyu NI, Hong HE. Clinical application of new mandibular molar intruding appliance [J]. Journal of Prevention and Treatment for Stomatological Diseases, 2017, 25(8): 523-529.
[11] Mei DENG, Meier ZHAO, Qide LUO, Xiuchang ZHANG. Clinical analysis of pericoronitis in yunnan college ethnic students [J]. Journal of Prevention and Treatment for Stomatological Diseases, 2017, 25(8): 541-544.
[12] Xian-feng WAN, Hui-ling WANG, Zhen-huan LIU, Jin-cai ZHANG, Pei-jia DUAN, Li-na BAO. Study on the consistency of the position of the brackets on the digital occlusal model and the actual position af-ter indirect bonding [J]. Journal of Prevention and Treatment for Stomatological Diseases, 2017, 25(5): 311-315.
[13] Ji-ye REN, Yan-ling SUN, Jun-mu MAO. A comparative study of two methods of intruding overerupted upper molars [J]. Journal of Prevention and Treatment for Stomatological Diseases, 2017, 25(4): 250-253.
[14] LI Guo-yue,ZHANG Yao,XIA Deng-sheng. Clinical observation of medical collagen sponge in the prevention of postoperative complications after extracting mandibular impacted teeth [J]. Journal of Prevention and Treatment for Stomatological Diseases, 2016, 24(9): 545-548.
[15] Qiong WU,Zuo-lin JIN,Xin LI,Li-ying WANG,Jia LIU. Study on the differences of reconstructive periodontium by stem cell sheets and normal periodontium under the orthodontic force [J]. Journal of Prevention and Treatment for Stomatological Diseases, 2016, 24(7): 395-401.
Viewed
Full text


Abstract

Cited
  Shared   
  Discussed   
No Suggested Reading articles found!

Copyright © Editorial Board of Journal of Prevention and Treatment for Stomatological Diseases

This work is licensed under a Creative Commons Attribution 3.0 License.

Address:Guangzhou City Jiangnan Road South 366, Editorial office ofJournal of Prevention and Treatment for Stomatological Diseases, zip code: 510280　Fax:020-34304115　E-mail：kqjbfz@vip.126.com

Supported by:Beijing Magtech

This work is licensed under a Creative Commons Attribution 3.0 License.