{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,31]],"date-time":"2026-03-31T04:08:18Z","timestamp":1774930098816,"version":"3.50.1"},"reference-count":31,"publisher":"Wiley","issue":"6","license":[{"start":{"date-parts":[[2013,1,21]],"date-time":"2013-01-21T00:00:00Z","timestamp":1358726400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Int J Paed Dentistry"],"published-print":{"date-parts":[[2013,11]]},"abstract":"<jats:sec><jats:title>Background<\/jats:title><jats:p>This study aimed to assess factors associated with occurrence of pulp necrosis (PN) in traumatized primary incisors, which may contribute to the prognosis of this outcome.<\/jats:p><\/jats:sec><jats:sec><jats:title>Design<\/jats:title><jats:p>Data were collected by single examiner through the analysis of clinical files of traumatized patients. The occurrence of PN in traumatized teeth was the evaluated outcome. Poisson regression analysis was applied to calculate the relative risk (RR) and the respective 95% confidence interval.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Five hundred and twenty\u2010one files were assessed, summing up 727 traumatized primary incisors. The proportion of teeth affected by PN was 23.8%. Multiple regression analysis indicated the following factors as positively associated with PN: trauma with displacement, pulp exposure fracture, self\u2010report of pain, yellow, grey and brown crown discoloration, internal root resorption, and bone loss. Trauma in 4\u2010 to 5\u2010year old and more than 5\u2010year\u2010old children, pulp canal obliteration, and external root resorption with bone formation were negatively associated with PN.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>Teeth that suffered more aggressive injuries, pain, some types of discoloration, and other radiographic findings (for instance, internal root resorption) are positively associated with the occurrence of PN. On the other hand, trauma in older children, canal obliteration, or external resorption show less probability of PN.<\/jats:p><\/jats:sec>","DOI":"10.1111\/ipd.12019","type":"journal-article","created":{"date-parts":[[2013,1,21]],"date-time":"2013-01-21T07:34:36Z","timestamp":1358753676000},"page":"460-469","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":12,"title":["Predictive factors for pulp necrosis in traumatized primary incisors: a longitudinal study"],"prefix":"10.1111","volume":"23","author":[{"given":"Janaina Merli","family":"Aldrigui","sequence":"first","affiliation":[{"name":"Department of Orthodontics and Pediatric Dentistry School of Dentistry University of S\u00e3o Paulo \u2010 USP S\u00e3o Paulo Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Isabela Caparelli","family":"Cadioli","sequence":"additional","affiliation":[{"name":"Department of Orthodontics and Pediatric Dentistry School of Dentistry University of S\u00e3o Paulo \u2010 USP S\u00e3o Paulo Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Fausto Medeiros","family":"Mendes","sequence":"additional","affiliation":[{"name":"Department of Orthodontics and Pediatric Dentistry School of Dentistry University of S\u00e3o Paulo \u2010 USP S\u00e3o Paulo Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jos\u00e9 Leopoldo Ferreira","family":"Antunes","sequence":"additional","affiliation":[{"name":"Public Health School University of S\u00e3o Paulo \u2010 USP S\u00e3o Paulo Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Marcia Turolla","family":"Wanderley","sequence":"additional","affiliation":[{"name":"Department of Orthodontics and Pediatric Dentistry School of Dentistry University of S\u00e3o Paulo \u2010 USP S\u00e3o Paulo Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2013,1,21]]},"reference":[{"issue":"3","key":"e_1_2_7_2_1","first-page":"230","article-title":"Sequelae of trauma to the primary dentition","volume":"13","author":"Kenwood M","year":"1989","journal-title":"J Pedod"},{"key":"e_1_2_7_3_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1600-9657.1998.tb00806.x"},{"issue":"5","key":"e_1_2_7_4_1","first-page":"335","article-title":"Intrusion injuries of primary incisors. 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