Department of Dental Clinical Specialties, Faculty of Dentistry, Complutense University of Madrid, Spain,
Med Oral Patol Oral Cir Bucal. 2019 Sep 1;24(5):e615-e620. doi: 10.4317/medoral.23035.
To establish the prevalence of supernumerary canines (SNC) in a sector of the population of Madrid (Spain), as well possible complications associated with this unusual developmental variation.
This observational study was performed between 2005 and 2017, among 21,615 patients seeking dental treatment at the Faculty of Dentistry, Complutense University of Madrid (Spain), and at the Virgen de la Paloma Hospital, Madrid (Spain); 22 patients with 26 SNCs were diagnosed. These 22 patients underwent clinical and radiological exploration, registering patient data.
SNCs presented a prevalence of 0.10% of the study population. The supernumerary teeth (SNT) were located in the upper maxilla more frequently (61.54%) than the mandible (38.46%). 69.23% were found to be impacted, also causing the impaction of the permanent canine in 53.85% of these cases. In 15.38%, follicular expansion > 3mm was observed. SNCs were associated with other SNT in only four patients.
Despite of the fact that the SNCs are usually diagnosed casually in the course of radiological exploration, in the present study over half of them (53.85%) caused impaction of the permanent canine. Early diagnosis allows optimal patient management and treatment planning, with intervention at an appropriate time to prevent complications in development and so reduce later treatment need.
在马德里（西班牙）的一个人群中确定多生牙（SNC）的流行率，以及与这种不寻常的发育变异相关的可能并发症。
这项观察性研究于 2005 年至 2017 年在马德里 Complutense 大学牙科学院和马德里 Virgen de la Paloma 医院的 21615 名寻求牙科治疗的患者中进行；诊断出 22 名患者有 26 颗 SNC。这 22 名患者接受了临床和放射学检查，记录了患者数据。
SNC 在研究人群中的患病率为 0.10%。多生牙（SNT）更常位于上颌（61.54%）而不是下颌（38.46%）。69.23%被发现是阻生的，在这些情况下，也导致了 53.85%的永久尖牙阻生。在 15.38%的情况下，观察到滤泡扩张>3mm。只有 4 名患者的 SNC 与其他 SNT 相关。
尽管 SNC 通常在放射学检查过程中偶然诊断，但在本研究中，超过一半（53.85%）的 SNC 导致了永久尖牙的阻生。早期诊断可实现对患者的最佳管理和治疗计划，在适当的时间进行干预，以预防发育中的并发症，并减少后续治疗的需要。
