Both a state of the art website and a critically acclaimed reference the 9th E-dition encompasses all of the latest in the filed. The text has been completely updated and, major enhancements such as superb new full-color design and the incorporation of the latest evidence-based research for clinical treatments make this the best Cohen ever! New information includes managing endodontic emergencies, orofacial pain, HIPAA regulations, traumatic injuries, tooth whitening, nonsurgical endodontic retreatment, and much more!The e-dition includes the complete text in searchable format, continual content updates, an electronic image collection, interactive case studies, and much more!Continual updates of content keep readers on the leading edge of endodontic news.Case of the Month offers case studies to show how to resolve a common clinical challenge or issue.Chapter on The Law and Dental Technology describes ethical practices and new legislation -- available only on this e-dition.Video clips bring procedures to life.Electronic image collection allows visuals to be downloaded from the textbook.Test bank of questions and exercises allows students to test their comprehension of the material.Links to related websites provide instant access to Medline and the most current information available today.Full-color design offers more detail in clinical photos.New contributors offer expert perspectives and build on the material in previous editions.Endodontic Failures chapter discusses treatment for apical periodontitis.Coverage of biocontaminants and the sterilization of tools and waterlines includes updates on antibacterial procedures and materials, and sterilization pre- and post-treatment, helping practices maintain better infection control.Information on wireless digital radiology describes components and applications, with a pro-and-con comparison to traditional film.Coverage of the connection between apical periodontitis/gingival infection and stroke/heart conditions helps clinicians make better decisions when preparing and treating patients.