Journal of Prevention and Treatment for Stomatological Diseases ›› 2020, Vol. 28 ›› Issue (6): 367-371.doi: 10.12016/j.issn.2096-1456.2020.06.005

• Cinical Study • Previous Articles     Next Articles

Clinical analysis of skeletal malocclusion, axial inclination in patients with short root anomaly of the maxillary central incisors

YANG Yang1,YU Zhishuang1,DUAN Xiaoyuan1,WU Weili1,DENG Yi1(),YAO Ji2   

  1. 1. Department of Orthodontics, Yunnan Medical Hospital of Stomatology, Kunming Medical University, Kunming 650106, China
    2. Faculty of Engineering and Architecture, Kunming University of Science and Technology, Kunming 650000, China
  • Received:2019-09-06 Revised:2019-12-18 Online:2020-06-20 Published:2020-05-28
  • Contact: Yi DENG E-mail:kq-dy@163.com

Abstract:

Objective To investigate the prevalence and distribution of skeletal malocclusion and axial inclination of the maxillary central incisors in short root anomaly (SRA) patients in Kunming city, to provide some reference and guidance for SRA patients′ clinical diagnosis and treatment and prevention in SRA patients. Methods A total of 1 000 cases were randomly selected from the CBCT database of patients admitted to the author′s hospital from January 2011 to July 2019, and a retrospective analysis was performed. A total of 27 patients with SRA were diagnosed (SRA group).The control group, consisted of 100 randomly selected patients from non-SRA patients. According to the clinical data and cephalometric data, skeletal malocclusion was divided into three subgroups: Class I skeletal malocclusion, Class II skeletal malocclusion and Class Ⅲ skeletal malocclusion. Additionally, the axial inclination of the central incisors was divided into three subgroups: the lingual inclination group, labial inclination group and normal inclination group. The two groups each according to sex, skeletal malocclusion and types of axial inclination of the maxillary central incisors were discussed. Results The prevalence rate of SRA in the selected population was 2.7%, and the prevalence of SRA in females was 3.67% (21/572) , which was higher than that in males by 1.4% (6/428), and was significantly different between sexes (χ2=4.562, P=0.033). There was a significant difference between SRA patients and control group in terms of skeletal malocclusion (χ2=8.710, P=0.013). Class Ⅲ skeletal malocclusion was the main type of skeletal malocclusion in SRA. There was a significant difference between SRA patients and control group in terms of the axial inclination of the maxillary central incisors (χ 2=16.75,P<0.001). Lingual inclination of the maxillary central incisors was the main type of axial inclination of the maxillary central incisors in SRA. Conclusion There is a certain correlation between class Ⅲ skeletal malocclusion and lingual inclination of the maxillary central incisors and SRA, and the root-crown ratio and root shape of these patients should be evaluated before orthodontics are implemented.

Key words: short root anomaly, root-crown ratio, maxillary central incisors, orthodontics, skeletal malocclusion, axial inclination

CLC Number: 

  • R783.5

Figure 1

Variables measured in the cone beam computed tomography scans A: reference line of the cementoenamel junction (CEJ); R: root length; C: crown length"

Table 1

Distribution of skeletal malocclusion in SRA patients"

Group Skeletal malocclusion Total χ2 P
Class Ⅰ Class Ⅱ Class Ⅲ
Controls 47 29 24 100 8.710 0.013
SRA 6 7 14 27
Total 53 36 38 127

Table 2

Distribution of axial inclination of the maxillary central incisors in SRA patients"

Group Axial inclination Total χ2 P
Labial
inclination
Lingual
inclination
Normal
inclination
Controls 21 28 51 100 16.75 <0.001
SRA 6 18 3 27
Total 27 46 54 127
[1] Lind V . Short root anomaly[J]. Scand J Dent Res, 1972,80(2):85-93.
[2] Apajalahti S, Holtta P, Turtola L , et al. Prevalence of short root anomaly in healthy young adults[J]. Acta Odontol Scand, 2002,60(1):56-59.
doi: 10.1080/000163502753472014
[3] Dutra EH, Janakiraman N, Nanda R , et al. Targeted mechanics for treatment of patients with severe short-root anomaly[J]. J Clin Orthod, 2017,51(5):279-289.
[4] Barros SE, Janson G, Chiqueto K , et al. Root resorption of maxillary incisors retracted with and without skeletal anchorage[J]. Am J Orthod Dentofacial Orthop, 2017,151(2):397-406.
doi: 10.1016/j.ajodo.2016.06.048
[5] Lamani E, Feinberg KB, Kau CH . Short root anomaly --a potential, “Landmine” for orthodontic and orthognathic surgery treatment of patients[J]. Ann Maxillofac Surg, 2017,7(2):296-299.
doi: 10.4103/ams.ams_128_16
[6] Cutrera A, Allareddy V, Azami N , et al. Is short root anomaly (SRA) a risk factor for increased external apical root resorptionin orthodontic patients? A retrospective case control study using cone beam computerized tomography[J]. Orthod Craniofac Res, 2019,22(1):32-37.
doi: 10.1111/ocr.2019.22.issue-1
[7] 傅民魁 . 口腔正畸学[M]. 6版. 北京: 人民卫生出版社, 2012: 86-87.
Fu MK. Orthodontics[M]. 6th ed. Beijing: People′s Medical Publishing House, 2012: 86-87.
[8] Vishwanath M, Chen PJ, Upadhyay M , et al. Orthodontic management of a patient with short root anomaly and impacted teeth[J]. Am J Orthod Dentofacial Orthop, 2019,155(3):421-431.
[9] Wang J, Rousso C, Christensen BI , et al. Ethnic differences in the root to crown ratios of the permanent dentition[J]. Orthod Craniofac Res, 2019,22(2):99-104.
[10] Yun HJ, Jeong JS, Pang NS , et al. Radiographic assessment of clinical rootcrown ratios of permanent teeth in a healthy Korean population[J]. J Adv Prosthodont, 2014,6(3):171-176.
doi: 10.4047/jap.2014.6.3.171
[11] Samandara A, Papageorgiou SN, Ioannidou-Marathiotou I , et al. Evaluation of orthodontically induced external root resorption following orthodontic treatment using cone beam computed tomography(CBCT): a systematic review and meta-analysis[J]. Eur J Orthod, 2019,41(1):67-79.
doi: 10.1093/ejo/cjy027
[12] Choi SH, Kim JS, Kim CS , et al. Cone-beam computed tomography for the assessment of root-crown ratios of the maxillary and mandibular incisors in a Korean population[J]. Korean J Orthod, 2017,47(1):39-49.
doi: 10.4041/kjod.2017.47.1.39
[13] Haghanifar S, Moudi E, Abbasi S , et al. Root-crown ratio in permanent dentition using panoramic radiography in a selected Iranian population[J]. J Dent (Shiraz), 2014,15(4):173-179.
[14] Puranik CP, Hill A, Jeffries KH , et al. Characterization of short root anomaly in a Mexican cohort-hereditary idiopathic root malformation[J]. Orthod Craniofac Res, 2015,18(1):62-70.
doi: 10.1111/ocr.2015.18.issue-S1
[15] 罗军 . 正畸患者中短根异常的患病特点及矫治后牙根吸收风险的研究[D]. 昆明:昆明医科大学, 2016.
Luo J . Study of the disease characteristics of short root anomaly in orthodontic patients and the risk of root resorption after orthodontic treatment[D]. Kunming: Kunming Medical University, 2016.
[16] NIVA Kansakar, 王佐林 . 上海地区成人恒牙冠根比例的研究[J]. 口腔颌面外科杂志, 2011,21(1):11-14.
NIVA Kansakar, WANG ZL . Root to crown ratio of permanent teeth of people living in Shanghai[J]. J Oral Maxillofac Surg, 2011,21(1):11-14.
[17] Uslu O, Akcam MO, Evirgen S , et al. Prevalence of dental anomalies in various malocclusions[J]. Am J Orthod Dentofacial Orthop, 2009,135(3):328-335.
doi: 10.1016/j.ajodo.2007.03.030
[18] 苏波, 魏思龙, 李莹 , 等. 不同颅面咬合类型人群切牙冠根比的CBCT比较研究[J]. 北京口腔医学, 2013,21(4):227-229.
Su B, Wei SL, Li Y , et al. A CBCT study on crown and root length of incisors in subjects of different craniofacial morphology[J]. Beijing J Stomatol, 2013,21(4):227-229.
[19] 谢瑞阅, 杨丕山, 李纾 . 牙囊在牙根发育中作用的实验研究[J]. 华西口腔医学杂志, 2006,24(4):343-345.
Xie RY, Yang PS, Li S . Experimental study of the dental follicle′s function in tooth root development[J]. West Chin J Stomatol, 2006,24(4):343-345.
[20] 贾刘合, 黄定明, 谭红 , 等. 恒前牙牙体硬组织解剖学特征的初步研究[J]. 四川医学, 2005,16(7):706-708.
Jia LH, Huang DM, Tan H , et al. Anatomic characteristics of Chinese permanent anterior teeth[J]. Sichuan Med J, 2005,16(7):706-708.
[21] 徐志明, 李媛, 吴可 , 等. 少年期上中切牙冠根指标的锥体束CT研究[J]. 口腔医学, 2019,39(1):30-34.
Xu ZM, Li Y, Wu K , et al. Study on crown-root indexes of central incisor of early youth by cone beam computed tomography[J]. Stomatology, 2019,39(1):30-34.
[1] AI Yilong,WU Siyuan,ZOU Chen. Analysis of crown-root morphology in canines based on cone-beam computed tomography [J]. Journal of Prevention and Treatment for Stomatological Diseases, 2020, 28(6): 372-376.
[2] CAO Cong,ZHOU Nan,ZHANG Kai,JIAN Fan,XU Baohua,MAN Yi. Summary of combined orthodontic and implant treatment in the patients with the congenital absence of maxillary lateral incisors [J]. Journal of Prevention and Treatment for Stomatological Diseases, 2020, 28(4): 241-245.
[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] 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.
[5] 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.
[6] LIU Jiaqi,CAO Zhiwei,BI Ruiye. Application and research progress of the surgery-first approach in the treatment of dento-maxillofacial deformities [J]. Journal of Prevention and Treatment for Stomatological Diseases, 2019, 27(11): 733-738.
[7] YAN Xuzhen,FENG Yunxia. Advances in adenoid hypertrophy and dental and maxillofacial deformities [J]. Journal of Prevention and Treatment for Stomatological Diseases, 2019, 27(10): 673-676.
[8] 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.
[9] 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.
[10] 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.
[11] Tao CUI, Yuqing DU, Yu SONG, Zhitao SUN, Fengchun HOU, Yanling YU. Cone-beam computed tomography study of condyle position in high-angle adult female patients with different sagittal skeletal malocclusion [J]. Journal of Prevention and Treatment for Stomatological Diseases, 2018, 26(3): 180-183.
[12] 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.
[13] 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.
[14] 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.
[15] 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.
Viewed
Full text


Abstract

Cited

  Shared   
  Discussed   
[1] WU Hongyu,MA Xiaoxin,LU Haixia,FENG Xiping,GU Qin,YE Wei,XIE Yingxin,XIE Danshu,WANG Wenji. Investigation of dental caries and periodontal conditions in maintenance hemodialysis patients[J]. Journal of Prevention and Treatment for Stomatological Diseases, 2020, 28(5): 313 -317 .
[2] ZHOU Tao,WU Peiyao,YANG Yuqing,CAO Zhiwei,XIE Liang. Research progress on the distribution of primary cilia and related signaling pathways involved in odontogenesis[J]. Journal of Prevention and Treatment for Stomatological Diseases, 2020, 28(5): 318 -321 .
[3] ZOU Xiaolong,CHEN Yuan,WANG Yan,WANG Jiantao. Research progress on animal models of oral mucositis caused by radiotherapy and chemotherapy[J]. Journal of Prevention and Treatment for Stomatological Diseases, 2020, 28(5): 322 -326 .
[4] WANG Mengxi,ZHANG Bo,LI Yong,ZHANG Xinduo,GE Lifei,CHANG Zhiqiang. The harm and protective measures of facial occupational exposure of dental medical and nursing personnel[J]. Journal of Prevention and Treatment for Stomatological Diseases, 2020, 28(5): 327 -330 .
[5] ZHANG Sui,HE Dongning. Current status of immediate implant placement in the aesthetic zone of the anterior teeth[J]. Journal of Prevention and Treatment for Stomatological Diseases, 2020, 28(5): 331 -335 .
[6] ZHANG Haifeng,NAN Xinrong,HUA Yongqing. Research progress on the consistency and evaluation factors of cervical lymphatic metastasis in early tongue cancer[J]. Journal of Prevention and Treatment for Stomatological Diseases, 2020, 28(5): 336 -340 .
[7] YE Qingsong, HU Fengting, LUO Lihua, Maria Troulis. Research and application of stem cell-derived exosomes in regenerative medicine[J]. Journal of Prevention and Treatment for Stomatological Diseases, 2020, 28(1): 1 -10 .
[8] . [J]. Journal of Prevention and Treatment for Stomatological Diseases, 2020, 28(2): 68 .
[9] TAO Qian,HE Yue,LIU Bing,HOU Jinsong,NAN Xinrong,ZHANG Bin,ZHANG Leitao,QIAO Bin. Expert consensus on marsupialization of cystic lesions of the jaw[J]. Journal of Prevention and Treatment for Stomatological Diseases, 2020, 28(2): 69 -72 .
[10] LIU Chuanxia,FU Ji,HAO Yilong,HE Hong,CHEN Qianming. Management strategy of oral mucosal diseases during the epidemic of Corona Virus Disease 2019[J]. Journal of Prevention and Treatment for Stomatological Diseases, 2020, 28(3): 178 -183 .
This work is licensed under a Creative Commons Attribution 3.0 License.