Kariya Pratik B, Singh Sweta, Kulkarni Narayan, Arora Ankita
Department of Pedodontics and Preventive Dentistry, KM Shah Dental College and Hospital, Sumandeep Vidyapeeth, Vadodara, Gujarat, India.
Reader, Public Health Dentistry, KM Shah Dental College, Sumandeep Vidyapeeth, Vadodara, Gujarat, India.
BMJ Case Rep. 2017 Aug 10;2017:bcr-2017-220683. doi: 10.1136/bcr-2017-220683.
Numerical anomalies, either addition or deletion, are quite a common findings in human dentition. However, it is extremely rare to find both hypodontia and hyperdontia simultaneously in the same individual. This condition is referred as concomitant hypohyperdontia (CHH). Aetiology of this condition is still obscure. The prevalence of CHH has been reported to be between 0.002% and 3.1%. This case report highlights a rare occurrence of bimaxillary CHH represented by the absence of both mandibular central incisors and presence of two supernumerary teeth in the maxillary anterior segment. The rarity of such condition of mixed hypodontia as well as hyperdontia in single human dentition prompted the author to report the case.
在人类牙列中，数目异常，无论是牙缺失还是多生牙，都是相当常见的发现。然而，在同一个体中同时发现牙缺失和多生牙极为罕见。这种情况被称为伴发性牙缺失与多生牙（CHH）。这种情况的病因仍不明确。据报道，CHH的患病率在0.002%至3.1%之间。本病例报告突出了一种罕见的双颌CHH病例，表现为下颌中切牙缺失以及上颌前部有两颗多生牙。单个人类牙列中这种混合性牙缺失与多生牙情况的罕见性促使作者报告此病例。
