Gündüz Kaan, Muğlali Mehtap, Inal Samet
Department of Oral Diagnosis and Radiology, Faculty of Dentistry, Ondokuz Mayis University, Samsun, Turkey.
J Contemp Dent Pract. 2007 Sep 1;8(6):64-71.
The purpose of this report is to present two cases of totally impacted maxillary deciduous molars, considered a rarity in dental practice.
Primary tooth impaction is quite rare during the development of primary dentition. Various factors contribute to the impaction of a deciduous tooth, including anklyosis, congenitally missing permanent teeth, defects in the periodontal membrane, trauma, injury of the periodontal ligament, precocious eruption of the first permanent molar, defective eruptive force, or a combination of these factors.
Case #1: An 18-year-old male presented with a complaint of spontaneous repetitious pain in the maxillary right premolar region. The maxillary right second premolar was clinically absent. Panoramic and periapical radiographs revealed an impacted second premolar close to the inferior wall of the maxillary sinus and an impacted deciduous molar deeply embedded in bone within the maxillary sinus. Case #2: A 14-year-old girl presented with a complaint of crowding of the maxillary teeth. The maxillary right second premolar and the maxillary permanent canines were clinically absent. A panoramic radiograph revealed an impacted maxillary right second premolar and an impacted deciduous molar embedded within bone close to the inferior wall of the maxillary sinus.
The total impactation of deciduous teeth is a rare condition, and few cases have been reported in the literature. The condition generally affects the mandibular second deciduous molar and the maxillary first deciduous least often. In this paper, two cases of totally impacted maxillary deciduous molars are reported.
本报告旨在介绍两例完全埋伏的上颌乳磨牙病例,此类病例在牙科临床实践中较为罕见。
乳牙列发育过程中乳牙埋伏相当少见。乳牙埋伏由多种因素导致,包括牙根粘连、恒牙先天性缺失、牙周膜缺陷、外伤、牙周韧带损伤、第一恒磨牙早萌、萌出力不足或这些因素共同作用。
病例1:一名18岁男性,主诉上颌右侧前磨牙区反复出现自发痛。临床检查发现上颌右侧第二前磨牙缺失。全景片和根尖片显示一颗埋伏的第二前磨牙靠近上颌窦下壁,以及一颗深深埋于上颌窦骨内的埋伏乳磨牙。病例2:一名14岁女孩,主诉上颌牙列拥挤。临床检查发现上颌右侧第二前磨牙和上颌恒尖牙缺失。全景片显示一颗埋伏的上颌右侧第二前磨牙和一颗埋伏于靠近上颌窦下壁骨内的乳磨牙。
乳牙完全埋伏是一种罕见情况,文献报道的病例较少。这种情况通常最常影响下颌第二乳磨牙,而最少影响上颌第一乳磨牙。本文报告了两例完全埋伏的上颌乳磨牙病例。