@article{ETD,
      recid = {9426},
      author = {Christensen, Dean A.},
      title = {Early tissue changes during human tooth movement},
      publisher = {Oregon Health and Science University},
      address = {1972-06-01},
      number = {ETD},
      abstract = {Hany histologic investigations of tooth movement utilizing  both experimental animal and human material have been  conducted and published during the past three-quarters of a  century. However, numerous questions concerning the  biologic response of the periodontium to the application of  force on a tooth remain unanswered. Among these is a  complete understanding of the early tissue reaction in  pressure areas of the periodontal ligament resulting from  the application of tooth movement forces.},
      url = {http://digitalcollections.ohsu.edu/record/9426},
      doi = {https://doi.org/10.6083/M48S4MZR},
}