@article{park jh2013treatment,
  title={Orthodontic Treatment of Hypodontia and Delayed Development of a
Maxillary Second Premolar},
  author={tai k,park jh,kanao a},
  journal={Journal of Clinical Pediatric Dentistry},
  volume={37},
  number={4},
  pages={421--427},
  doi = {10.17796/jcpd.37.4.b40472g183525t43},
  year={2013}
}