The effectiveness of Hawley and vacuum-formed retainers: a single-center randomized controlled trial.

@article{Rowland2007TheEO,
  title={The effectiveness of Hawley and vacuum-formed retainers: a single-center randomized controlled trial.},
  author={Heidi Rowland and Lisa Hichens and Alison K. Williams and Darren Hills and Norman Killingback and Paul Ewings and Steven R Clark and Anthony John Ireland and Jonathan Sandy},
  journal={American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics},
  year={2007},
  volume={132 6},
  pages={730-7}
}
INTRODUCTION Vacuum-formed retainers (VFRs) are often prescribed by orthodontists in the British National Health Service (NHS). There is no good evidence that VFRs are more effective than Hawley retainers. The aim of this study was to compare the clinical effectiveness of Hawley and VFRs over a 6-month period of retention. The study design was a randomized clinical trial, performed in a single orthodontic practice. METHODS Eligible patients treated by a specialist orthodontist were randomly… CONTINUE READING

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