Effects of traumatic dental injuries to primary teeth on permanent teeth – a clinical follow‐up study

 –  Aim:  This study evaluated the prevalence of developmental sequelae to permanent teeth (DSP) after traumatic dental injuries to primary teeth (TDI‐1) and their association with age, gender, type of injury, recurrence of injury and post‐traumatic damage to primary teeth. Materials and methods : Dental records of 2725 children treated from February 1993 to December 2008 in a private pediatric dental clinic were examined. A total of 308 records had 412 primary teeth that sustained traumatic injuries. Age at the time of injury ranged from 4 months to 7 years. A chi‐squared test and logistic regression were used for statistical analyses. Results : One hundred forty‐eight children (241 teeth) were followed up until the eruption of the permanent successor. The prevalence of DSP was 22.4%. Discoloration and hypoplasia were the most frequent abnormalities (74.1%), followed by eruption disorders (25.9%). Age at the time of TDI‐1 was the only variable significantly associated with DSP. Sequelae were most prevalent among children who suffered an injury between 1 and 3 years of age. Conclusions : Children who sustain traumatic dental injuries should be followed up regularly for an early diagnosis and treatment of possible DSP.