Department of Paediatric and Preventive Dentistry, Yenepoya Dental College, Mangalore, Manipal Academy of Higher Education, Manipal, Karnataka, India.
Department of Orthodontics, Yenepoya Dental College, Mangalore, Manipal Academy of Higher Education, Manipal, Karnataka, India.
J Indian Soc Pedod Prev Dent. 2020 Oct-Dec;38(4):425-429. doi: 10.4103/JISPPD.JISPPD_391_20.
The absence of a tooth in the oral cavity may be the result of some obstruction with the process of tooth eruption. Physical obstruction can result from many different causes, such as supernumerary teeth, mucosal barrier, scar tissue, and cysts or tumors. Their removal will usually permit the affected tooth to erupt. This case report describes the delayed eruption of the permanent mandibular first molar in a 9-year-old boy due to the dentigerous cyst associated with it. The management was done through a multidisciplinary approach. Surgical removal of cystic sac through marsupialization along with the removal of the barrier was done. As a consequence of delayed eruption of the permanent first molar, the opposing tooth had supraerupted, which was intruded using mini-implants. Following this, the tooth erupted satisfactorily into the oral cavity to establish class I molar relation.
口腔内无牙可能是牙齿萌出过程中出现某种阻塞的结果。物理性阻塞可由多种不同原因引起，如多生牙、黏膜屏障、瘢痕组织以及囊肿或肿瘤。去除这些阻塞物通常可使受影响的牙齿萌出。本病例报告描述了 1 名 9 岁男孩因伴发含牙囊肿导致下颌第一磨牙萌出过迟。采用多学科方法进行治疗。通过袋形术切除囊腔，并去除阻挡物。由于下颌第一磨牙萌出过迟，对颌牙已超萌出，使用微型种植体将其压入。之后，牙齿顺利萌出到口腔内，建立了Ⅰ类磨牙关系。
