“Collagen: Health and Disease” is a complete and detailed guide on basic collagen structure, its types, its synthesis and its functions in various tissues as well as diseases of collagen molecules. The diseases include gingival enlargements, dentinogenesis imprefecta, oral submucous fibrosis and certain syndromes which is explained in detail in this book. The book consists of compilation of recent research and review articles on collagen diseases which is not given together or individually in any other book or article. This book is for undergraduate and postgraduate students of the subject, clinicians dealing with oral and maxillofacial pathologies as well as researchers working in the field of head and neck pathology.