Analysis of interpretations of full-mouth and panoramic surveys.

The purposes of this study were to determine differences in interpretation of radiographic findings of full-mouth and panoramic surveys by junior and senior dental students and differences in their interpretive skills. The parameters of interest were caries, incipiencies, lamina dura interruptions, periodontal membrane changes, and periapical bone changes. The questions to be answered regarding the differences between the full-mouth and panoramic surveys were: (1) In which type of radiograph were the most lesions found? (2) In which type of radiograph are the most "non-existing" lesions found? (3) In which type of radiograph are the most lesions undetected? (4) Does the junior or senior dental student demonstrate the most accuracy in his interpretation?     

Chlorhexidine–protein interactions

The binding of chlorhexidine to proteins in vitro has been shown to involve albumin in both serum and saliva. The binding, which is pH- and concentration-dependent, occurs both to proteins remaining in solution and to proteins precipitated during the reaction. Both reactions are reversible, although that to precipitated protein apparently involves a stronger binding. If the latter can be correlated to the in vivo situation, it is suggested as a possible explanation of the extended retention of chlorhexidine in the mouth despite the rather rapid turnover of saliva.