It is a great pleasure to write this handbook which is a practical guide for undergraduate students and general dentists .I hope the straightforward and understandable way of this book will be very useful as a source in clinical practice . This book is written by Yemeni General dentist who still lives in war in Yemen with cooperation with Dr.Calogero Bugea who is an oral Surgeon and Endodonist that lives in Italy and Practices Dentistry there .