Dental Anomalies in Permanent Teeth after Trauma in Primary Dentition

J Clin Pediatr Dent. 2017;41(1):5-9. doi: 10.17796/1053-4628-41.1.5.


Objective: This retrospective study aims to evaluate the prevalence of dental anomalies in permanent teeth as a result of a trauma concerning the predecessor primary teeth.

Study design: A total of 241 records of children (118 males and 123 females, mean age 3.62 ± 1.40) affected by trauma on primary teeth were analyzed. All patients were recalled to evaluate the status of the permanent successor teeth by clinical and radiographic investigations.

Results: Out of 241 patients, 106 patients (for a total of 179 traumatized primary teeth) presented at the recall. Dental anomalies on successor permanent teeth were detected in 21 patients (19.8%), for a total of 26 teeth (14.5%) and 28 anomalies. Anomalies of the eruptive process were the most observed disturbances (60.7%), followed by enamel hypoplasia (25%) and white spots (14.3%). A higher percentage of anomalies on permanent teeth was observed when trauma occurred at an age less than 36 months (38.5% of cases). Intrusive and extrusive luxation were related with the most cases of clinical disturbances in the successor permanent teeth.

Conclusions: The results of this study highlight the risk of dental anomalies after a trauma in primary dentition, especially in early-aged children and in case of intrusive luxation.

Keywords: Primary teeth; delayed eruption; hypoplasia; sequelae; trauma.

MeSH terms

  • Child
  • Child, Preschool
  • Dental Caries / epidemiology
  • Dental Enamel Hypoplasia / epidemiology
  • Dentition, Permanent*
  • Female
  • Humans
  • Infant
  • Italy / epidemiology
  • Male
  • Retrospective Studies
  • Tooth Eruption
  • Tooth, Deciduous / injuries*