@article{jae-hong park2015of,
  title={Treatment of Ectopic Permanent Maxillary First Molar Using a
K-loop},
  author={ok hyung nam,hyo jung ahn,mi sun kim,jae-hong park},
  journal={Journal of Clinical Pediatric Dentistry},
  volume={39},
  number={4},
  pages={387--391},
  doi = {10.17796/1053-4628-39.4.387},
  year={2015}
}