Anthonappa R P, Sudhakar S, King N M
Paediatric Dentistry, School of Dentistry, The University of Western Australia, 17 Monash Avenue, Nedlands, WA 6009, Australia.
Private Practice, Bangalore, India.
Eur Arch Paediatr Dent. 2017 Apr;18(2):123-126. doi: 10.1007/s40368-017-0269-9. Epub 2017 Feb 15.
Supplemental teeth refer to extra teeth that resemble the normal tooth series. Bilateral supplemental central incisors in a healthy individual are rare and bilateral supplemental incisors with double-tooth like appearance are exceptionally rare and has not been previously reported in the dental literature.
This clinical report describes an 8-year old healthy Indian boy referred for the management of delayed eruption of his permanent maxillary incisor teeth. Following clinical and radiographic examination the two supplemental incisors closer to the midline were extracted under local analgesia and both of them exhibited double-tooth like appearance.
The present case refutes the conventional wisdom that "supplemental teeth are usually smaller than the normal tooth type they resemble and occur distal to the normal tooth series", illustrates that the unusual can occur and that the clinician should be aware of such variations.
额外牙是指与正常牙列相似的多余牙齿。健康个体双侧额外中央切牙罕见，而外观呈双牙样的双侧额外切牙则极为罕见，牙科文献中此前尚无报道。
本临床报告描述了一名8岁健康印度男孩，因恒牙上颌切牙萌出延迟前来就诊。经过临床和影像学检查后，在局部麻醉下拔除了两颗靠近中线的额外切牙，这两颗牙均呈现双牙样外观。
本病例反驳了“额外牙通常比它们所类似的正常牙类型小，且位于正常牙列远中”这一传统观点；表明异常情况可能发生，临床医生应注意此类变异。
