Journal of Prevention and Treatment for Stomatological Diseases ›› 2017, Vol. 25 ›› Issue (4): 250-253.doi: 10.12016/j.issn.2096-1456.2017.04.010

• Cinical Study • Previous Articles     Next Articles

A comparative study of two methods of intruding overerupted upper molars

Ji-ye REN(), Yan-ling SUN, Jun-mu MAO   

  1. 1. Deparment of Orthodontics, Jiangmen Municipal Stomatological Hospital, Jiangmen 529000, China
    2. Deparment of Oral and Maxillofacial surgery, Jiangmen Municipal Stomatological Hospital, Jiangmen 529000, China
  • Received:2016-08-17 Revised:2016-10-13 Online:2017-04-20 Published:2018-09-03

Abstract:

Objective To compare the clinical effects of the two methods of intruding overerupted molars by microscrews. Methods 21 overerupted molars were selected and ramdomly divided into group A and group B. Group A was implanted with one microscrew anchorage at the side of the buccolingual tongue, and the force was produced by the tension spring. Group B was implanted with two microscrews combined with nickel - titanium fragments to lower the molars. The distances, velocities and microscrew anchorage failure rates were measured and compared between the two groups. Results Two methods can achieve significant depressing effect, however, the failure rate of micro-screws was different in the two methods. The failure rates of group A and group B were 27.3% and 5.0%, respectively. The average speed of group A was 0.37 mm / month, and group B was 0.33 mm / month. Conclusion Both microscrew anchorage methods can effectively intrude overerupted upper molars. The speed of intrusion with microscrews directly is faster than NiTi Segmental arch and microscrews, but the implant failure of microscrews is higher.

Key words: Orthodontics, Overerupted molars, Microscrews anchorage, Intrusion

CLC Number: 

  • R783.5

Figure 1

Intra-oral view of intrusion by microscrews directly"

Figure 2

Intra-oral view of intrusion with the NiTi Segmental arch and microscrew"

Table 1

Comparision of treatment condition between two groups"

A组 B组 t值 P值
年龄(岁) 38.91 ± 7.05 41.30 ± 6.40 -0.81 0.43
压低量(mm) 2.81 ± 0.52 2.71 ± 0.51 0.43 0.30
压低时间(月) 7.73 ± 1.49 8.50 ± 1.84 -1.06 0.68
压低速度(mm/月) 0.37 ± 0.06 0.33 ± 0.05 1.88 0.08

Table 2

Comparision of the implant failure of microscrews between two groups"

成功数(颗) 失败数(颗) 合计(颗) 失败率(%)
A组 16 6 22 27.3
B组 19 1 20 5.0
合计 35 7 42 16.7
[1] 闫翔, 赵计林, 苏寒, 等. 微种植体支抗在压低成年人伸长磨牙中的应用[J]. 实用口腔医学杂志, 2010, 26(3): 397-398.
[2] 张月兰, 董莹丽, 闫利辉, 等. 微螺钉种植体支抗压低上颌伸长磨牙的疗效观察[J]. 郑州大学学报(医学版), 2013, 48(5): 652-654.
[3] Padmaprabha BP, Ponnambathayil SA, Aynipully H, et al.A precise method of measuring simultaneous intrusion and uprighting of mandibular molar using dental scan-a case report[J]. J Clin Diagn Res, 2015, 9(7): 1-3.
[4] Xun CL, Zhao H, Zeng XL, et al.Intrusion of overerupted maxillary molars with miniscrew implant anchorage: a radiographic evaluation[J]. J Huazhong Univ Sci Technolog Med Sci, 2013, 33(5): 780-785.
[5] 谢国芳, 何天鹏, 冯婧, 等.微种植体支抗压低上颌伸长磨牙的临床研究[J].中日友好医院学报, 2014, 28(5): 293-294.
[6] 张鹏, 于莹, 兰泽栋, 等. 种植支抗压低磨牙的临床研究[J].广东牙病防治, 2009, 17(6): 276-277.
[7] 毛慧霞, 李峰, 李玮, 等. 组合微螺钉种植支抗压低下颌伸长磨牙的初步研究[J].口腔医学, 2013, 33(4): 229-231.
[8] 秦飞, 徐培成, 钱文昊, 等. 种植支抗联合铸造支架压低磨牙的临床研究[J].口腔医学, 2013, 33(9): 581-583.
[9] Bratu CD, Pop RV, Pop SI, et al.Adjusting dento-alveolar morphology with orthodontic mini-implants (miniscrews). A clinical case report[J]. Rom J Morphol Embryol, 2011, 52(3 Suppl): 1133-1137.
[10] Cao Y, Liu C, Wang C, et al.A simple way to intrude overerupted upper second molars with miniscrews[J]. J Prosthodontics, 2013, 22(8): 597-602.
[11] Kravitz ND, Kusnoto B, Tsay TP, et al.The use of temporary anchorage devices for molar intrusion[J]. J Am Dent Assoc, 2007, 138(1): 56-64.
[12] Santiago RC, de Paula FO, Fraga MR, et al. Correlation between miniscrew stability and bone mineral density in orthodontic patients[J]. Am J Orthod Dentofacial Orthop, 2009, 136(2): 243-250.
[13] 马华祥, 郭晶, 吴忠, 等. 微种植体支抗压低伸长磨牙的临床研究[J].临床口腔医学杂志, 2013, 29(9): 537-539.
[14] Zahrowski J, Jeske A.Apical root resorption is associated with comprehensive orthodontic treatment but not clearly dependent on prior tooth characteristics or orthodontic techniques[J]. J Am Dent Assoc, 2011, 142(1): 66-68.
[15] Romeo A, Esteves M, García V, et al.Movement evaluation of overerupted upper molars with absolute anchorage: an in-vitro study[J]. Med Oral Patol Oral Cir Bucal, 2010, 15(6): 930-935.
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