少年期上中切牙冠根指标的锥体束CT研究

Abstract

Abstract: Objective: To investigate the crown-root length of upper central incisors in early youth and explore the related hard tissue measurement items. Methods: The cone-beam CT (CBCT) of 100 patients with malformed malocclusion was selected. The crown-root length of the upper central incisors and the related hard tissue 3D measurement indexes were measured by MIMICS17.0 software. The Spearman correlation analysis was carried out on the crown-root length of the upper central incisors and the related hard tissue 3D measurement indexes using the SPSS21.0 software. Results：①The root length was positively correlated with the lip inclination and the thickness of the alveolar bone in the apical labial side.②The crown root ratio of the upper central incisors was negatively correlated with the lip inclination and the thickness of the alveolar bone in the apical labial side.③The thickness of the alveolar bone in the apical labial side was positively related to the lip inclination, and was negatively correlated with the crown root ratio. Conclusion: There is a correlation between the length of the root, the crown root ratio, the lip inclination, the thickness of the alveolar bone in the apical labial side of the upper central incisors. It has a guiding significance for the clinical work.

Key words: early youth, maxillary central incisors, crown-root length, alveolar bone, cone-beam computed tomography

CLC Number:

R783.5

References

[1] 许天民，刘妍，江久汇，等. 正畸内收上切牙对上颌牙槽骨改建的临床研究[J]. 实用口腔医学杂志,2004(04);431-433.
[2] Handelman C S. The anterior alveolus: its importance in limiting orthodontic treatment and its influence on the occurrence of iatrogenic sequelae[J]. Angle Orthod,1996,66(2);95-109, 109-110.
[3] Sarikaya S, Haydar B, Ci?er S, et al. Changes in alveolar bone thickness due to retraction of anterior teeth.[J]. American Journal of Orthodontics & Dentofacial Orthopedics,2002,122(1);15-26.
[4] 傅民魁. 口腔正畸学[M].6版. 北京:人民卫生出版社,2012:10, 358.
[5] 马志贵，樊林峰，房兵. 应用CBCT评价牙周病正畸治疗中牙槽骨状态的价值[J]. 上海口腔医学,2010(02);113-117.
[6] 王艳，李均，陈兆学，等. CBCT在口腔三维成像中的应用研究[J]. 中国医学物理学杂志,2013(02);4008-4011.
[7] 鞠昊，朱红华，段涛，等. CBCT 的基本原理及在口腔各科的应用进展CBCT 的基本原理及在口腔各科的应用进展[J]. 医学影像学杂志,2015(5);907-909, 942.Hao J U, Hong-Hua Z, Tao D, et al. The research progress of basic principle and application of CBCT[J]. Journal of Medical Imaging,2015,(5);907-909, 942.
[8] Chang Z C, Hu F C, Lai E, et al. Landmark identification errors on cone-beam computed tomography-derived cephalograms and conventional digital cephalograms[J]. Am J Orthod Dentofacial Orthop,2011,140(6);e289-e297.
[9] Nair R, Deguchi T S, Li X, et al. Quantitative analysis of the maxilla and the mandible in hyper- and hypodivergent skeletal Class II pattern[J]. Orthod Craniofac Res,2009,12(1);9-13.
[10] de Oliveira A E, Cevidanes L H, Phillips C, et al. Observer reliability of three-dimensional cephalometric landmark identification on cone-beam computerized tomography[J]. Oral Surg Oral Med Oral Pathol Oral Radiol Endod,2009,107(2);256-265.
[11] 钟佳永，林新平，汪志蔚，等. 青少年与成人正畸治疗前后上前牙冠根比变化的初步研究[J]. 口腔医学,2011(02);99-102.
[12] 李媛，林汤毅，王珊，等. 应用锥体束CT对少年期中切牙冠根角度的研究[J]. 南京医科大学学报(自然科学版),2016(02);210-213.
[13] 李媛，李琥，于剑南，等. 利用锥体束CT对少年期中切牙根尖周牙槽骨厚度的研究[J]. 口腔医学,2015(10);838-841.
[14] 盖立婷，徐高祥，姜秋. 影响牙根发育因素的研究进展[J]. 口腔医学研究,2015(05);531-533.
[15] 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(04);343-345.
[16] 张彦琦，李金儒，李静，等. 牙根短小的临床分类及致病因素的研究进展[J]. 临床口腔医学杂志,2016(11);696-698.
[17] 张志媛. 咬合调整对前牙牙周组织功能性改建的影响[D]. 第四军医大学,2013.
[18] 娜荷雅. 咬合力对小鼠磨牙牙根发育影响的初步研究[D]. 首都医科大学,2017.
[19] Grossmann Y, Sadan A. The prosthodontic concept of crown-to-root ratio: a review of the literature[J]. J Prosthet Dent,2005,93(6);559-562.
[20] Penny R E, Kraal J H. Crown-to-root ratio: its significance in restorative dentistry[J]. J Prosthet Dent,1979,42(1);34-38.
[21] 刘展，钱英莉，樊瑜波. 正畸中牙根形态对牙根应力分布的影响[J]. 四川大学学报(工程科学版),2009(06);68-72.
[22] Oyama K, Motoyoshi M, Hirabayashi M, et al. Effects of root morphology on stress distribution at the root apex[J]. Eur J Orthod,2007,29(2);113-117.
[23] Braut V, Bornstein M M, Belser U, et al. Thickness of the anterior maxillary facial bone wall-a retrospective radiographic study using cone beam computed tomography[J]. Int J Periodontics Restorative Dent,2011,31(2);125-131.
[24] Buccal Bone Thickness Overlying Maxillary Anterior Teeth_ A Clinical and Radiographic Prospective Human Study[J].
[25] Mulie R M, Hoeve A T. The limitations of tooth movement within the symphysis, studied with laminagraphy and standardized occlusal films[J]. J Clin Orthod,1976,10(12);882-893, 886-889.
[26] Wehrbein H, Fuhrmann R A, Diedrich P R. Periodontal conditions after facial root tipping and palatal root torque of incisors[J]. Am J Orthod Dentofacial Orthop,1994,106(5);455-462.

Study on crown-root indexes of central incisor of early youth by cone beam computed tomography

PDF (PC)

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 15

Recommended Articles

Metrics

Comments

[1]	XU Hai-Yang. A CBCT study of the alveolar bone in the maxillary central incisor root apex of the skeletal class II adults [J]. , 2019, 39(6): 510-513.
[2]	. Progress of mesenchymal stem cell related growth factor in alveolar bone repair [J]. , 2019, 39(1): 66-70.
[3]	. Evaluation of distance from cementoenamel junction to alveolar crest before and after non-extraction orthodontic treatment by cone beam computed tomography [J]. , 2018, 38(11): 1011-1014.
[4]	. A cone-beam computed tomography study of the relationship between maxillary sinus floor and maxillary posterior teeth root and alveolar bone in Chinese population [J]. , 2018, 38(1): 23-28.
[5]	. To measure the length of maxillary central incisors by panoramic radiographs among individuals in Jiangsu Province [J]. , 2017, 37(7): 612-614.
[6]	. To analyze the correlative factors of the gingival biotype of the maxillary central incisor [J]. , 2017, 37(7): 615-620.
[7]	. Clinical observation of implant restoration in reconstruction of alveolar bone deficiency with autogenous block graft [J]. , 2017, 37(7): 607-611.
[8]	. Application of CBCT in evaluation of alveolar bone changes before and after periodontal therapy in chronic periodontitis [J]. , 2017, 37(5): 444-448.
[9]	. Effects of BMSCs and FG as seed cells and scaffold materials on repairing alveolar bone defect in rats [J]. , 2017, 37(4): 307-310.
[10]	. Skeletal and dental analysis of Class Ⅲ subdivision malocclusions using cone-beam computed tomography [J]. , 2017, 37(3): 233-236.
[11]	. Research progress in diagnosis and treatment of impacted maxillary canines. [J]. , 2017, 37(2): 188-192.
[12]	Shi-jian DENG. Animal model research progress on tooth eruption [J]. , 2017, 37(12): 1124-1127.
[13]	. Application of cone beam computed tomography in endodontics [J]. , 2017, 37(12): 1144-1147.
[14]	. Root canal re-treatment of maxillary lateral incisor with dens invaginatus :A case report [J]. , 2016, 36(9): 835-837.
[15]	. Comparative study of the effects of conventional and hybrid Hyrax appliances on arch width，dentoalveolar and basal bone [J]. , 2016, 36(7): 615-620.