I am using this book for year 1 BDS - the pictures are excellent and the text is really easy to understand.
There is a good introduction to the process of caries at the start of the book (although is this covered in more detail in other texts in the series - e.g. "essentials of dental caries").
It also gives useful information on the uses of the materials used (e.g. why amalgam is still one of the major filling materials) which I find very useful because to saves you having to consult a different text!
The names, pictures, uses and handling techniques of the dental instruments and materials is also very useful for students using them for the first time.
Overall an excellent book, recommended by many lecturers.