@article{ok hyung nam2019digitalized,
  title={Three-Dimensional Digitalized Surface and Volumetric Analysis of
Posterior Prefabricated Zirconia Crowns for Children},
  author={hyeonjong lee,yong kwon chae,hyo-seol lee,sung chul choi,ok hyung nam},
  journal={Journal of Clinical Pediatric Dentistry},
  volume={43},
  number={4},
  pages={231--237},
  doi = {10.17796/1053-4625-43.4.2},
  year={2019}
}