Malocclusion refers to the condition when there is misalignment between the teeth of the two dental arches when they come closer to each other as the upper jaw and lower jaw closes. Malocclusions usually don't require treatment until and unless it's very severe. Severe malocclusion is treated with orthodontic treatment. It reduces the risk of tooth decay and helps in relieving excessive pressure on the temporomandibular joint. As per the sagittal relations of teeth and jaws, malocclusions can be classified into three types-class I: neutrocclusion, class II: cistocclusion and class III: mesiocclusion. Malocclusion can be caused due to lost teeth, extra teeth, abnormally shaped teeth and impacted teeth. Ill-fitting dental fillings, crowns, appliances, retainers, or braces and misalignment of jaw fractures after a severe injury are some other causes. This book unravels the recent studies in the field of malocclusion. It provides significant information of this discipline to help develop a good understanding of this domain. This book is a resource guide for experts as well as students.