This is not a book for last minute exam study but rather a fairly heavy text for those interested in finding out more about some dental materials.
It goes through each type of material (both clinical and laboratory) in turn. Although all the information you need is there, I found it hard to distinguish which were the important bits.
It assumes a fairly high level of prior knowledge of chemistry/physics (solid state diagrams anyone?) and does tend to become bogged down in long words.
If you just want to get through the exam this isn't the book for you. If you're actually interested in dental materials (I wasn't) it might be.