Lipid analysis of human enamel and dentine

Odutuga, A.A.; Prout, R.E.S.

doi:10.1016/0003-9969(74)90143-5

Cited by 49 publications

(22 citation statements)

References 8 publications

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“…The remaining 15% consists of free water and equal amounts of protein and lipid. 20 The strongly absorbed laser energy in the enamel is converted to heat that boils water abruptly. The boiled water forms high-pressure steam that leads to the ablation process when the pressure exceeds the ultimate strength of the tooth.…”

Section: Discussionmentioning

confidence: 99%

Acid Resistance of Erbium-doped Yttrium Aluminum Garnet Laser–Treated and Phosphoric Acid–Etched Enamels

Kim¹,

Kwon

Kim

et al. 2006

The Angle Orthodontist

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Objective:To compare the effects of erbium-doped yttrium aluminum garnet (Er:YAG) laser ablation and of phosphoric acid etching on the in vitro acid resistance of bovine enamel. Materials and Methods: Teeth were polished to make the surface flat. The polished enamel was either etched with 37% phosphoric acid for 30 seconds or ablated with a single 33 J/cm 2 pulse from an Er:YAG laser. The control specimens were free from acid etching and laser ablation. Changes in crystal structure, dissolved mineral (calcium [Ca] and phosphorus [P]) contents, and calcium distribution in the enamel subsurface after a pH-cycling process were evaluated. Results: After laser treatment, poor crystal structures improved without forming any new phases, such as tricalcium phosphates. Among the tested enamels, dissolved mineral contents were significantly different (P Ͻ .05). Er:YAG laser-treated enamels had the lowest mineral dissolution (Ca, 13.78 ppm; P, 6.33 ppm), whereas phosphoric acid-etched enamels had the highest (Ca, 15.90 ppm; P, 7.33 ppm). The reduction rate and reduced depth of calcium content along the subsurface were lowest in Er:YAG laser-treated enamels. Conclusion:The Er:YAG laser-treated enamels are more acid resistant to acid attack than phosphoric acid-etched enamels.

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Section: Discussionmentioning

confidence: 99%

Acid Resistance of Erbium-doped Yttrium Aluminum Garnet Laser–Treated and Phosphoric Acid–Etched Enamels

Kim¹,

Kwon

Kim

et al. 2006

The Angle Orthodontist

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“…They contribute the second largest fraction w/w of the organic matrix after protein. The total amount of lipids found in human teeth has been reported to be 0.51% w/w for enamel and 0.33% w/w for dentin, respectively [Odutuga and Prout, 1974] , corresponding to a lipid content of the organic matrix of 42% w/w for enamel and 1.65% w/w for dentin. Only little attention has been focused on the role of the lipid fraction in the caries process.…”

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confidence: 99%

Influence of Olive Oil Emulsions on Dentin Demineralization in vitro

et al. 2003

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The effect of two different concentrations of olive oil emulsions on development of artificial caries-like dentin lesions under severe demineralizing conditions was investigated. Bovine dentin samples (n = 180) were ground flat, polished, divided into four groups, and subjected to three demineralization cycles per day. Samples were stored in one of the following solutions for 5 min prior to demineralization in a buffer solution (pH 5): Group 1: 50% oil emulsion (olive oil and distilled water); group 2: 5% oil emulsion; group 3: distilled water; and group 4: 1,500 ppm sodium fluoride. Daily up to 9 days, lesion depth (ld) and mineral loss (ΔZ) were determined by means of microradiography and analyzed by ANOVA and Tukey’s studentized range test (p ≤ 0.05). Lesion depth increased with time for all groups. Mineral loss increased in groups 1–3. A small but significant decrease in mineral loss was observed following treatment with lipid emulsions as compared to treatment with distilled water, but fluoride treatment was considerably more effective. Mean mineral loss (means ± SD in vol%·µm) averaged over the study period was 4,368 ± 1,599, 4,536 ± 1,823, 4,849 ± 1,798, and 789 ± 177 for group 1, 2, 3, and 4, respectively. Ratio (ΔZ/ld) remained constant around 30 vol% for groups 1–3, but decreased for group 4. In conclusion, externally provided lipids have the potential to reduce dentin demineralization in vitro.

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“…It has been suggested that the organic matrix of enamel, having an approximately 50:50 protein/lipid composition (Odutuga and Prout, 1974;Skaleric et al, 1979), behaves in a manner similar to other biological membranes. According to the theory of transmembrane transport of low molecular mass (lmm) inorganic species, which has widespread applicability to many biomembranes, the passive diffusion process through enamel will occur most rapidly for neutral molecules such as uncharged complexes this reflecting the organic solvent protein/lipid composition of enamel (Duffield and Williams, 1989;Faye, 1974;May and Williams, 1977;May and Williams, 1980).…”

Section: Theory Of Transmembrane Transportmentioning

confidence: 99%

Chemical speciation of saliva containing remineralizing solutions and their predicted effectiveness for subsurface lesion remineralization

Williams

1993

Chemical Speciation & Bioavailability

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A computer modelling approach to estimate the chemical speciation which occurs in saliva and in subsurface lesion remineralizing solutions has been used to correlate chemical speciation data with published findings related to remineralization of dental enamel. The work also provides a means of selecting improved carrier ligands for the ions involved in remineralization and for optimising tooth protection and repair.

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Lipid analysis of human enamel and dentine

Cited by 49 publications

References 8 publications

Acid Resistance of Erbium-doped Yttrium Aluminum Garnet Laser–Treated and Phosphoric Acid–Etched Enamels

Acid Resistance of Erbium-doped Yttrium Aluminum Garnet Laser–Treated and Phosphoric Acid–Etched Enamels

Influence of Olive Oil Emulsions on Dentin Demineralization in vitro

Chemical speciation of saliva containing remineralizing solutions and their predicted effectiveness for subsurface lesion remineralization

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