Lara V S, Consolaro A, Bruce R S
Department of Oral Medicine, Bauru School of Dentistry, University of São Paulo, Al. Dr. Octávio Pinheiro Brisolla, 9-75, Bauru, São Paulo, Brazil CEP 17043-101.
J Endod. 2000 Jun;26(6):345-50. doi: 10.1097/00004770-200006000-00009.
With the objective of correlating the anatomical aspects of the palato-gingival groove with its etiology, diagnosis, and alternative treatments, 13 permanent maxillary incisors with palato-gingival grooves were selected from a large sample and subjected to macroscopic and microscopic analysis of groove morphology. The palato-gingival groove occurred most frequently on the lingual aspect of the lateral incisor (11 of 13), and its coronal and radicular extensions were on the disto-lingual surface of the incisors (7 of 13 and 6 of 13, respectively). Deformation of the contour of the pulp cavity was noted subjacent to the groove (9 of 13), along with diminished enamel and dentin thickness (11 of 13 and 13 of 13, respectively) and an increase in cement (12 of 13). The groove was observed extending to the apical third in nine specimens, and a direct communication between the pulp and periodontium was observed in only one case. From these examinations it is concluded that the palato-gingival groove can be clinically diagnosed, preventing subsequent problems; however microscopic analysis of the affected tooth is necessary to allow precise evaluation of the groove's extension and damage to the dental structure.
为了将腭龈沟的解剖学特征与其病因、诊断及替代治疗方法相关联，从大量样本中选取了13颗带有腭龈沟的上颌恒切牙，并对沟形态进行了宏观和微观分析。腭龈沟最常出现在侧切牙的舌侧（13颗中有11颗），其冠部和根部延伸分别位于切牙的远中舌面（分别为13颗中的7颗和6颗）。在沟下方观察到牙髓腔轮廓变形（13颗中有9颗），同时釉质和牙本质厚度减小（分别为13颗中的11颗和13颗），而牙骨质增加（13颗中有12颗）。在9个标本中观察到沟延伸至根尖三分之一，仅在1例中观察到牙髓与牙周组织直接相通。从这些检查得出结论，腭龈沟可以在临床上进行诊断，以预防后续问题；然而，对患牙进行微观分析对于准确评估沟的延伸范围和对牙齿结构的损害是必要的。
