- Effect of blood and saliva contamination on shear bond strength of brackets bonded with 4 adhesives. Oztoprak, M.O., Isik, F., Sayinsu, K., Arun, T., Aydemir, B. American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics (2007)