Early loading of plalatal implants (ortho-type II) a prospective multicenter randomized controlled clinical trial

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• 作者：Britta A Jung (1)
  Heinrich Wehrbein (1)
  Werner Hopfenmüller (2)
  Winfried Harzer (3)
  Tomasz Gedrange (4)
  Peter Diedrich (5)
  Martin Kunkel (6)
  
• 刊名：Trials
• 出版年：2007
• 出版时间：December 2007
• 年：2007
• 卷：8
• 期：1
• 全文大小：678KB
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• 作者单位：Britta A Jung (1)
  Heinrich Wehrbein (1)
  Werner Hopfenmüller (2)
  Winfried Harzer (3)
  Tomasz Gedrange (4)
  Peter Diedrich (5)
  Martin Kunkel (6)
  
  1. Department of Orthodontics, University Hospital Mainz, Augustusplatz 2, 55131, Mainz, Germany
  2. Institute for Medical Statistics, Charité-Campus Benjamin Franklin, University of Berlin, Hindenburgdamm 30, 12203, Berlin, Germany
  3. Department of Orthodontics, Technical University of Dresden, Fetscherstr. 74, 01307, Dresden, Germany
  4. Department of Orthodontics, University of Greifswald, Rotgerberstr. 8, 17487, Greifswald, Germany
  5. Department of Orthodontics, University of Aachen, Pauwelsstr. 30, 52074, Aachen, Germany
  6. Department of Oral and Maxillofacial Surgery, University Hospital Mainz, Augustusplatz 2, 55131, Mainz, Germany
  

文摘

Background In orthodontic treatment, anchorage control is a fundamental aspect. Usually conventional mechanism for orthodontic anchorage control can be either extraoral or intraoral that is headgear or intermaxillary elastics. Their use are combined with various side effects such as tipping of occlusal plane or undesirable movements of teeth. Especially in cases, where key-teeth are missing, conventional anchorage defined as tooth-borne anchorage will meet limitations. Therefore, the use of endosseous implants for anchorage purposes are increasingly used to achieve positional stability and maximum anchorage. Methods/Design The intended study is designed as a prospective, multicenter randomized controlled trial (RCT), comparing and contrasting the effect of early loading of palatal implant therapy versus implant loading after 12 weeks post implantation using the new ortho-implant type II anchor system device (Orthosystem Straumann, Basel, Switzerland). 124 participants, mainly adult males or females, whose diagnoses require temporary stationary implant-based anchorage treatment will be randomized 1:1 to one of two treatment groups: group 1 will receive a loading of implant standard therapy after a healing period of 12 week (gold standard), whereas group 2 will receive an early loading of orthodontic implants within 1 week after implant insertion. Participants will be at least followed for 12 months after implant placement. The primary endpoint is to investigate the behavior of early loaded palatal implants in order to find out if shorter healing periods might be justified to accelerate active orthodontic treatment. Secondary outcomes will focus e.g. on achievement of orthodontic treatment goals and quantity of direct implant-bone interface of removed bone specimens. As tertiary objective, a histologic and microtomography evaluation of all retrieved implants will be performed to obtain data on the performance of the SLA surface in human bone evaluation of all retrieved implants. Additionally, resonance frequency analysis (RFA, Osstell?mentor) will be used at different times for clinically monitoring the implant stability and for histological comparison in order to measure the reliability of the resonance frequency measuring device. Trial registration Current Controlled Trials ISRCTN97142521.