Miniscrews as Anchorage Device for Orthodontic Treatment

Summary

The purpose of this trial is to study and compare two different anchorage techniques. Adolescent patients in need for orthodontic treatment are randomized into Group A and B. Both groups are treated with extractions of the maxillary first premolars and fixed appliance. Anchorage is reinforced by miniscrews in Group A and by molarblock in Group B. The hypotheses are: * that placement of miniscrews does not cause more pain or discomfort than premolar extractions * that molarblock provides increase of anchorage * that miniscrews have a better anchorage capacity than molarblock * that miniscrews are more cost-efficient than conventional anchorage techniques

Timeline

Start

2009-11

Primary completion

2018-07

Completion

2018-09-21

Publications

• Background Feldmann I, List T, John MT, Bondemark L. Reliability of a questionnaire assessing experiences of adolescents in orthodontic treatment. Angle Orthod. 2007 Mar;77(2):311-7. doi: 10.2319/0003-3219(2007)077[0311:ROAQAE]2.0.CO;2.
• Background Upadhyay M, Yadav S, Nanda R. Biomechanics of incisor retraction with mini-implant anchorage. J Orthod. 2014 Sep;41 Suppl 1:S15-23. doi: 10.1179/1465313314Y.0000000114.
• Background Upadhyay M, Yadav S, Patil S. Mini-implant anchorage for en-masse retraction of maxillary anterior teeth: a clinical cephalometric study. Am J Orthod Dentofacial Orthop. 2008 Dec;134(6):803-10. doi: 10.1016/j.ajodo.2006.10.025.
• Background Lehnen S, McDonald F, Bourauel C, Baxmann M. Patient expectations, acceptance and preferences in treatment with orthodontic mini-implants. A randomly controlled study. Part I: insertion techniques. J Orofac Orthop. 2011 Mar;72(2):93-102. doi: 10.1007/s00056-011-0013-8. English, German.
• Background Feldmann I, List T, Feldmann H, Bondemark L. Pain intensity and discomfort following surgical placement of orthodontic anchoring units and premolar extraction: a randomized controlled trial. Angle Orthod. 2007 Jul;77(4):578-85. doi: 10.2319/062506-257.1.
• Background Feldmann I, List T, Bondemark L. Orthodontic anchoring techniques and its influence on pain, discomfort, and jaw function--a randomized controlled trial. Eur J Orthod. 2012 Feb;34(1):102-8. doi: 10.1093/ejo/cjq171. Epub 2011 Feb 7.
• Background Melsen B, Costa A. Immediate loading of implants used for orthodontic anchorage. Clin Orthod Res. 2000 Feb;3(1):23-8. doi: 10.1034/j.1600-0544.2000.030105.x.
• Background Lai EH, Yao CC, Chang JZ, Chen I, Chen YJ. Three-dimensional dental model analysis of treatment outcomes for protrusive maxillary dentition: comparison of headgear, miniscrew, and miniplate skeletal anchorage. Am J Orthod Dentofacial Orthop. 2008 Nov;134(5):636-45. doi: 10.1016/j.ajodo.2007.05.017.
• Background Papadopoulos MA, Tarawneh F. The use of miniscrew implants for temporary skeletal anchorage in orthodontics: a comprehensive review. Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 2007 May;103(5):e6-15. doi: 10.1016/j.tripleo.2006.11.022. Epub 2007 Feb 21.
• Ganzer N, Feldmann I, Petren S, Bondemark L. A cost-effectiveness analysis of anchorage reinforcement with miniscrews and molar blocks in adolescents: a randomized controlled trial. Eur J Orthod. 2019 Mar 29;41(2):180-187. doi: 10.1093/ejo/cjy041.
• Ganzer N, Feldmann I, Bondemark L. Anchorage reinforcement with miniscrews and molar blocks in adolescents: A randomized controlled trial. Am J Orthod Dentofacial Orthop. 2018 Dec;154(6):758-767. doi: 10.1016/j.ajodo.2018.07.011.

Drugs

Indications

No indication recorded.