@article{lori lee santos2002planning,
  title={Treatment planning in the presence of congenitally absent second premolars: a review of the literature},
  author={lori lee santos},
  journal={Journal of Clinical Pediatric Dentistry},
  volume={27},
  number={1},
  pages={13--18},
  doi = {10.17796/jcpd.27.1.5q06x95w2p657107},
  year={2002}
}