Caracterización histológica de las lesiones cervicales no cariosas: estudio exploratorio

Abstract

Background: Non-carious cervical lesions (NCCL) are defects at the cementoenamel junction (CEJ) of the tooth and constitute a prevalent chief complaint. Dentin is the main mineralized component of the tooth structure, its tubules mineralize as a consequence of ageing, increasing its translucency. A morphological description of NCCLs from a histological and anatomopathological point of view is currently scarce. Is important to recognize the morphology and composition of the NCCL’s dentin in the restorative treatments planning. Objectives: Histologically analyze the dentinal translucency present in NCCLs through microscopic observation and the digital characterization of the dentinal types of NCCLs using colour thresholding analysis. Method: Forty-four specimens with NCCLs were analyzed after axial mesiodistal abrasion, observed over a black background by means of epi illumination microscopy. The dentin was analyzed using the Threshold Colour plug-in for the ImageJ software. Results: The dentin translucency was expressed histologically as transparent (41%), opaque (95%), transitional (98%), affected by Maillard reaction (84%), and altered by antibiotic intake (11%). Discussion and conclusion: NCCLs are heterogeneous entities in which the dentinal translucency levels present a different distribution among each specimen.