Zubizarreta Macho Álvaro, Ferreiroa Alberto, Rico-Romano Cristina, Alonso-Ezpeleta Luis Óscar, Mena-Álvarez Jesús
J Am Dent Assoc. 2015 Apr;146(4):266-70. doi: 10.1016/j.adaj.2014.11.021.
Dens invaginatus (DI) is defined as a rare dental malformation. The inherent structural variants of this anatomic disorder make it difficult to perform conventional endodontic treatment procedures by means of a conservative access cavity. In this clinical case report, the authors describe the treatment of a type II DI by means of guided splints for cavity access.
This is a clinical report of a case of type II DI in a maxillary lateral incisor. The authors established the diagnosis by means of cone-beam computed tomography (CBCT). The authors manufactured 3 splint guides from a Digital Imaging and Communications in Medicine file and a stereolithography file obtained from a plaster model of the patient by using software for guided implant placement, for access opening, and for locating the root canals.
CBCT is an effective method for obtaining information about the root canal system in teeth with DI. In addition, guided implant surgery software is effective for manufacturing splint guides for endodontic treatment with conservative pulp chamber access.
Information obtained from CBCT allows the clinician to fabricate splint guides for minimally invasive access opening in this type of case, thus reducing the loss of dental tissue.
牙内陷（DI）被定义为一种罕见的牙齿畸形。这种解剖学疾病固有的结构变异使得通过保守的开髓洞形进行常规牙髓治疗程序变得困难。在本临床病例报告中，作者描述了通过引导夹板进行开髓治疗II型牙内陷的方法。
这是一例上颌侧切牙II型牙内陷的临床报告。作者通过锥形束计算机断层扫描（CBCT）进行诊断。作者使用用于引导种植体植入、开髓和定位根管的软件，从医学数字成像和通信（DICOM）文件以及从患者石膏模型获得的立体光刻文件中制作了3个夹板导板用于开髓。
CBCT是获取牙内陷牙齿根管系统信息的有效方法。此外，引导种植手术软件对于制造用于保守髓腔开髓的牙髓治疗夹板导板是有效的。
从CBCT获得的信息使临床医生能够为这类病例制作用于微创开髓的夹板导板，从而减少牙体组织的损失。
