Comparison of natural and artificial root caries lesions using microcomputed tomography and microhardness test.
Aust Dent J
; 68(2): 120-124, 2023 06.
Article
en En
| MEDLINE
| ID: mdl-37070605
BACKGROUND: This study compared natural root caries lesions with artificial root caries lesions prepared with one of the two demineralising solutions. METHODS: Twelve natural root caries lesions on upper incisors and 24 artificial root lesions were prepared on sound root surfaces using 50 mM acetic acid, 1.5 mM CaCl2 , 0.9 mM KH2 PO4 at pH 5.0 or 80 mL/L Noverite K-702 polyacrylate solution, 500 mg/L hydroxyapatite, 0.1 mol/L lactic acid at pH 4.8 (n = 12/group) for 96 hours. Lesions were scanned using micro-CT. Inciso-gingival oriented images were analysed and mineral density calculated at 7.5 µm increments from the surface to 225-µm deep. Sectioned lesions were analysed by Knoop microhardness up to 250 µm from the lesion surface. Data were analysed by the Dunn's test with Bonferroni correction. RESULTS: Natural and artificial lesion mean mineral densities were not statistically different (P > 0.05). Mineral density from the surface to 75 µm was greater in natural lesions and from 150 to 225 µm was greater in artificial lesions (P < 0.05). Microhardness values were statistically higher in artificial lesions (P < 0.05); no difference was found among artificial lesions produced by the two solutions (P > 0.05). Mineral density and microhardness of natural and artificial root caries are different from each other. A greater mineralized surface layer existed on natural lesions.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Caries Radicular
/
Caries Dental
Límite:
Humans
Idioma:
En
Revista:
Aust Dent J
Año:
2023
Tipo del documento:
Article
País de afiliación:
Australia
Pais de publicación:
Australia