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Combined effects of nano-hydroxyapatite and Galla chinensis on remineralisation of initial enamel lesion in vitro

Huang, Shengbin ; Gao, Shanshan ; Cheng, Lei ; Yu, Haiyang

Journal of dentistry, 2010-10, Vol.38 (10), p.811-819 [Periódico revisado por pares]

Kidlington: Elsevier Ltd

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Título:
Combined effects of nano-hydroxyapatite and Galla chinensis on remineralisation of initial enamel lesion in vitro
Autor: Huang, Shengbin ; Gao, Shanshan ; Cheng, Lei ; Yu, Haiyang
Assuntos: Animals ; Aqueous solutions ; Biocompatible Materials - administration & dosage ; Biocompatible Materials - therapeutic use ; Biological and medical sciences ; Cariostatic Agents - administration & dosage ; Cariostatic Agents - therapeutic use ; Cattle ; Crystals ; Dental caries ; Dental Enamel - drug effects ; Dental Enamel - pathology ; Dentistry ; Deposition ; Drug Combinations ; Drug Synergism ; Drugs, Chinese Herbal - administration & dosage ; Drugs, Chinese Herbal - therapeutic use ; Durapatite - administration & dosage ; Durapatite - therapeutic use ; Early enamel lesions ; Enamel ; Facial bones, jaws, teeth, parodontium: diseases, semeiology ; Fluorides ; Galla chinensis ; Hardness ; Herbal medicine ; Hydrogen-Ion Concentration ; Hydroxyapatite ; Lesions ; Medical sciences ; Microhardness ; Microscopy, Electron, Scanning ; Microscopy, Polarization ; Minerals ; Minerals - analysis ; Nano-hydroxyapatite ; Nanocomposites ; Nanocrystals ; Nanomaterials ; Nanostructure ; Nanostructures - administration & dosage ; Nanostructures - therapeutic use ; Non tumoral diseases ; Otorhinolaryngology. Stomatology ; Plant Extracts - therapeutic use ; Production management ; Random Allocation ; Remineralisation ; Sodium Fluoride - therapeutic use ; Time Factors ; Tissue engineering ; Tooth Demineralization - pathology ; Tooth Demineralization - prevention & control ; Tooth Remineralization - methods ; Water ; X-Ray Diffraction
É parte de: Journal of dentistry, 2010-10, Vol.38 (10), p.811-819
Notas: ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
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Descrição: Abstract Objectives The aim of the present study was to investigate the combined effects of nano-hydroxyapatite and Galla chinensis on remineralisation of initial enamel lesion. Methods Bovine enamel blocks with in vitro produced initial lesion were used. The lesions were subjected to a pH-cycling regime for 12 days. Each daily cycle includes 4 × 3 min application with one of five treatments: NaF (positive control), deionised water (negative control), crude aqueous extract of G. chinensis (GCE), nano-hydroxyapatite (nano-HA) and GCE with nano-HA. The samples were subsequently evaluated using a microhardness tester, polarised light microscopy (PLM), X-ray diffraction (XRD) and scanning electron microscopy (SEM). Results Surface hardness measurements and integrated mineral recovery value obtained from cross-sectional microhardness test (CSMH) revealed that all the treatment groups had significantly greater effect on enhancing remineralisation than that of the negative control group. Detailed investigation of both CSMH and PLM indicated that nano-HA would only help mineral deposition predominate in the outer layer of lesion and had limited capacity to reduce the lesion depth significantly. In GCE–nano-HA combined treatment group, more mineral deposition occurred in the lesion body and lesion depth was reduced significantly. Meanwhile, significantly greater mineral deposition in the outer portion of the lesion was also observed in comparison with GCE group. The results of XRD and SEM also showed that GCE could influence the deposition and adsorption of nano-HA. Conclusion There was a significant synergistic effect of combined GCE and nano-HA treatment on promoting the remineralisation of initial enamel lesion.
Editor: Kidlington: Elsevier Ltd
Idioma: Inglês;Persa

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Combined effects of nano-hydroxyapatite and Galla chinensis on remineralisation of initial enamel lesion in vitro

Huang, Shengbin ; Gao, Shanshan ; Cheng, Lei ; Yu, Haiyang

Kidlington: Elsevier Ltd

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