title: Histopathological and radiographic evaluation of rat molar teeth after traumatic injury-a pilot study.
abstract: OBJECTIVE
  Radiographic and histopathological evaluation of mechanical trauma on the development of maxillary molars in rat.
  
  
  METHODS
  Experimental study with 7-day-old five new born Wistar rats. Trauma induced on 7(th) postnatal day with #55 K file. Right first molar region of the maxilla was the experimental side, and the left side as control. Each animal was sacrificed for histopathological observation on 8(th) day (immediately next day of injury), 10(th) day (after 3 days of injury), 13(th) day (Enamel completion), 19(th) day (Emergence into oral cavity) and 42(nd) day when all the teeth came into functional occlusion.
  
  
  RESULTS
  On the 42(nd) day experimental side of the study, the 1(st) molar tooth had not erupted and the radiographs taken revealed conglomerate mass suggestive of complex odontome. Reduced tooth size, altered enamel and dentin formation, abscess formation and complex odontome like structure were observed histopathologically.
  
  
  CONCLUSIONS
  The diversity of morphlogical and histopathological changes to intrusive force implies intricate mechanism involved in tooth development.
authors.affiliation: Department of Oral and Maxillo Facial Pathology, C.K.S. Teja institute of Dental Sciences and Reasarch, Tirupathi, India.
authors.forename: T
authors.initials: T
authors.lastname: Prasanth
authors.forename: Tr
authors.initials: T
authors.lastname: Saraswathi