Research on the Related Factors of the Second Molar Dislocation and Orthodontic Erect Method

Jinhong Guo (Jinan Central Hospital Affiliate to Shandong First Medical University)

Abstract


The second molar dislocation is more common clinically. To investigate the related factors of the second permanent molar dislocation, and provide reference for the clinical diagnosis and treatment of orthodontics. From the current clinical research, the clinical methods of orthodontic erect secondary molars are also diverse and clinical.

The narrower first molar alveolar arch width, smaller ANB angle, and crowded maxillary posterior segment arch are the factors that cause the maxillary second permanent molar dislocation. The narrow alveolar arch width, the smaller SNB angle, the larger ANB angle, and the crowded lower mandibular arch are the factors leading to the dislocation of the mandibular second permanent molar. In addition, for the second mandibular molar malposition, it is particularly important to select the corrective treatment plan. It is especially important to improve the treatment.


Keywords


Mandibular second molar; Malposition; Etiology; Orthodontic erect; Classification diagnosis; Best method

Full Text:

PDF

References


Baik UB Factors associated with spontaneous angular changes of impacted mandibular third molars as a result of second molar protraction. [J].Am J Orthod, Dentofacial, Orthop, 2019,08

SHAPIRAY, Uprighting mesially impacted mandibular perm anent second molars [J]. The angle orthodontist,2009,68(2):173—8.

BROWNIS .The effect of orthodontic therapy Oil certain types of periodontal defects.I, Clinical findings[J].Journal of periodontology,2008,44(12) :742-56.

LAUCK. Orthodontic uprighting of severely impacted mandibular second molars[J].American journal of or thodontics and dento facial orthopedics:of i cial publication of the American Association,2013,143(1).

ZACHRISSONBU. Optimal mechanics form an dibularmolar uprighting [J].World journal of orthodontics,2005,6(1):80-7.

Tseng YC,Use of a miniplate for skeletal anchorage in the treatment of a severely impacted mandibular second molar.Br J Oral Maxillo facSurg 2008,07

Merrifield LL,Klontz HA,Vaden JL.Differential diagnostic analysis[J].Am J Orthod,1994,106(6):641-648.

Han Chun, Duan Yinzhong, Huo Na, et al. Clinical investigation of second molar error (occlusion) [J]. Journal of Clinical Stomatology, 2006, 22 (1): 36-37. (in Chinese)

Cai Huibin, Lu Shuyuan. Epidemiological survey of malocclusion of the second molar in the early period of permanent dentition in Heilongjiang [J]. China Primary Health Care, 2017, 31 (6): 93-95. (in Chinese)

Wang Wei, Zhang Ding, Li Xiaotong. Clavicular occlusion and crowding of the posterior arch of the second molar [J] .Chinese Journal of Orthodontics, 2001,8 (1): 28-29. (in Chinese)

Hwang S.Ectopic eruption of the maxillary second molar:Predictive factors[J].Angle Orthod,2017,87(4):583-589.

Jianhang Zhang .Clinical research on the related factors of dislocation and eruption of mandibular second molar in orthodontic treatment [D] .Kunming: Kunming Medical University, 2016. (in Chinese)

Kim YH.Anterior openbite and its treatment with multiloop edge- wise archwire[J].Angle Orthod,1987,57(4):290-321.

Deng Lihua, Huang Chun.Related factors of malocclusion of maxillary second molars [J] .Journal of Shandong University, 2007,45 (8): 857-861. (in Chinese)

Pulver F.The etiology and prevalence of ectopic eruption of the maxillary first permanent molar[J].Asdc J Dent Child,1968,35(2):138-146

Ma Haiqing, Yang Qian. Related factors of malocclusion of mandibular second molars [J] .Journal of Qilu Medical Journal, 2009,24 (4): 345-347. (in Chinese)

Richardson ME.Lower third molar space[J]. Angle Orthod,1987, 57(2):155-161.

Hassan AH. Mandibular cephalometric characteris-tics of a Saudi sample of patients having impacted third molars[J].Saudi Dent J, 2011,23(2):73-80.

Deng Kaixiong, Liu Jin, Guo Xin, et al. Extraction and retention of molars during orthodontic treatment (26)-Study on the occurrence and development of third molars [J] .Journal of Clinical Stomatology, 2008,24 (1): 60-62. (in Chinese)

Tsai HH.Eruption process of the second molar[J].J Dent Child, 2000, 67(4):275-281.

LAUCK .Orthodontic uprighting of severely impacted mandibular second molars[J].American journal of or thodontics and dento facial orthopedics:o f i cial publication o f the American Association,2013,143(1)

ZACHRISSONBU. Optimal mechanics form an dibularmolar uprighting [J].World journal of orthodontics,2005,6(1):80-7.

Tseng YC,Use of a miniplate for skeletal anchorage in the treatment of a severely impacted mandibular second molar.Br J Oral Maxillo facSurg 2008,07.



DOI: https://doi.org/10.30564/jams.v3i1.1463

Refbacks

  • There are currently no refbacks.
Copyright © 2020 Jinhong Guo Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.