|Dental trauma mainly refers to the injury of tooth or trauma to the teeth and periodontium which are gums, periodontal ligament, alveolar bone and soft tissue such as lips, tongue, etc. The study of dental trauma is commonly known as dental traumatology. There are basically three type of dental trauma and they are tooth fractures, injuries of the periodontal apparatus, soft tissue laceration, mostly lips.
High-impact journals are those considered to be highly influential in their respective fields. The impact factor of journal provides quantitative assessment tool for grading, evaluating, sorting and comparing journals of similar kind. It reflects the average number of citations to recent articles published in science and social science journals in a particular year or period, and is frequently used as a proxy for the relative importance of a journal within its field. It is first devised by Eugene Garfield, the founder of the Institute for Scientific Information. The impact factor of a journal is evaluated by dividing the number of current year citations to the source items published in that journal during the previous two years