@article{ETD,
      recid = {2203},
      author = {Borgen, Kari},
      title = {The effect of curing light source on polymerization  contraction stress and degree of conversion over time in an  orthodontic adhesive},
      publisher = {Oregon Health and Science University},
      school = {M.S.},
      address = {2006},
      number = {ETD},
      abstract = {This study evaluated the effects of two curing light  sources on contraction stress and degree of conversion (DC)  of an orthodontic adhesive over time. Transbond XT adhesive  was cured using either a halogen or a second‑generation LED  light, and contraction stress was measured at multiple time  points up to 24 hours. Degree of conversion was assessed  using FTIR spectroscopy. Results showed that the LED  produced significantly greater contraction stress than the  halogen light when equal energy was applied, while DC was  not affected by light source. Both contraction stress and  DC increased over time, with the highest values at 24  hours. These findings suggest that curing light  characteristics influence stress development independently  of conversion and may have clinical implications for bond  strength.},
      url = {http://digitalcollections.ohsu.edu/record/2203},
      doi = {https://doi.org/10.6083/M45Q4TBJ},
}