Bardellini Elena, Amadori Francesca, Pasini Stefania, Majorana Alessandra
J Clin Pediatr Dent. 2017;41(1):5-9. doi: 10.17796/1053-4628-41.1.5.
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.
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.
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.
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.
本回顾性研究旨在评估乳牙外伤对继承恒牙牙体异常患病率的影响。
分析了241例乳牙外伤患儿（男118例，女123例，平均年龄3.62±1.40岁）的记录。所有患者均被召回，通过临床和影像学检查评估继承恒牙的状况。
241例患者中，106例（共179颗外伤乳牙）前来复诊。21例患者（19.8%）的继承恒牙发现牙体异常，共26颗牙齿（14.5%）出现28处异常。萌出过程异常是最常见的干扰（60.7%），其次是釉质发育不全（25%）和白斑（14.3%）。乳牙外伤发生在36个月龄以下时，恒牙出现异常的比例更高（38.5%）。嵌入性和脱出性牙脱位与继承恒牙临床干扰的大多数病例相关。
本研究结果突出了乳牙外伤后牙体异常的风险，尤其是在幼儿及嵌入性牙脱位的情况下。
