I'd recommend students having a look at this article by Len D'Cruz from Dental Protection. It is applicable to student and qualified dentists alike.
The article reinforces the need for adequate note keeping. One common shortcoming among dentists generally, it seems, is that diagnoses are not recorded.
You can get to the paper by clicking on the title above with your Athens account or it's in the 'Outreach' section on Blackboard as a pdf.