Comparative assessment of the crystalline structures of powder and bulk human dental enamel by X-ray diffraction analysis

Behroozibakhsh, Marjan; Hajizamani, Hamidreza; Shekofteh, Kiana; Otadi, Mansooreh; Ghavami-Lahiji, Mehrsima; Nazari, Neda Sadat Faal

doi:10.1016/j.job.2019.06.003

Cited by 13 publications

(16 citation statements)

References 31 publications

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“…The crystallinity degree was determined for all the samples in the 20-70 • range, in agreement with Behroozibakhsh et al [38], finding crystallinity index values in the 73.5-85.4% range, with the lowest value for #SM(25)r and the highest value for #C(33)c.…”

Section: Crystallographic Conservation Of Enamel and Cementumsupporting

confidence: 86%

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Infrared Spectroscopic Analysis of the Inorganic Components from Teeth Exposed to Psychotherapeutic Drugs

Diez

Martín‐Gil

et al. 2021

Minerals

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Teeth are unique and complex anatomical organs that can provide relevant data about a person's health, and play an important role in forensic medicine. Teeth are exposed to food, drinks, and the microbiota of the oral cavity; therefore, they have developed a high resistance to localized demineralization. Nevertheless, the continuous demineralization–remineralization cycle present in the oral environment can be influenced by stress, medication, mineralization agents, and other factors such as individual habits, especially diet. In this study, based on attenuated total reflectance Fourier-transform infrared spectroscopy (ATR-FTIR) spectra from tooth samples of 36 patients, several parameters were estimated: the crystallinity index (CI), the phosphate/amide I ratio, and the carbonate/phosphate ratio. In addition, in eight representative samples (six of the root of the tooth and two of the enamel area of the crown), additional characterization by X-ray powder diffraction (XRPD), scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDS) was conducted. From the FTIR data, it was observed that the highest CI values were found in patients who smoked. Further, in both root and crown samples, the intensity of the absorption band corresponding to PO43- increased in patients undergoing treatment with psychotherapeutic drugs. On the other hand, the intensity of the absorption band of the amide I group decreased with medical treatment and with the patient's biological age. Moreover, it was found that the remineralization process was more active in enamel than in the root due to direct contact with saliva. Regarding the results obtained from the X-ray powder diffractograms, exposure to psychotherapeutic drugs affected the definition of the peaks corresponding to hydroxyapatite, both in the crown and root samples. Concerning SEM results, qualitative differences in the stratification process in demineralized surfaces were observed, and EDS analyses showed some differences in the Ca/P ratio between pathological samples and control ones, but without clear patterns. The above techniques, in particular ATR-FTIR, showed promise for the investigation of the effect of changes produced in the hydroxyapatite structure in teeth and, consequently, to determine possible strategies in the diagnostic protocol.

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Section: Crystallographic Conservation Of Enamel and Cementumsupporting

confidence: 86%

“…The degree of crystallinity was analyzed using the peak intensities in the 2θ = 20 • -70 • range, according to the procedure described by Behroozibakhsh et al [38].…”

Section: X-ray Diffraction Analysismentioning

confidence: 99%

Infrared Spectroscopic Analysis of the Inorganic Components from Teeth Exposed to Psychotherapeutic Drugs

Diez

Martín‐Gil

et al. 2021

Minerals

View full text Add to dashboard Cite

show abstract

“…XRD analysis is an excellent method that has been widely used to study the ultrastructure of certain materials. XRD is also a powerful technique that can be used to evaluate the structure of biological minerals such as teeth and bones, and has been used by various researchers to examine the crystal structure of biological mineral composites 47 . In this study, the XRD result showed no impurity peaks, indicating that the synthesized biomaterial had high purity.…”

Section: Discussionmentioning

confidence: 99%

Synthesis of a graphene oxide/agarose/hydroxyapatite biomaterial with the evaluation of antibacterial activity and initial cell attachment

Khosalim

Zhang

Yiu

et al. 2022

Sci Rep

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Various materials are used in bone tissue engineering (BTE). Graphene oxide (GO) is a good candidate for BTE due to its antibacterial activity and biocompatibility. In this study, an innovative biomaterial consists of GO, agarose and hydroxyapatite (HA) was synthesized using electrophoresis system. The characterization of the synthesized biomaterial showed that needle-like crystals with high purity were formed after 10 mA/10 h of electrophoresis treatment. Furthermore, the calcium-phosphate ratio was similar to thermodynamically stable HA. In the synthesized biomaterial with addition of 1.0 wt% of GO, the colony forming units test showed significantly less Staphylococcus aureus. Initial attachment of MC3T3-E1 cells on the synthesized biomaterial was observed which showed the safety of the synthesized biomaterial for cell viability. This study showed that the synthesized biomaterial is a promising material that can be used in BTE.

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“…Half of this powder was taken for XRD analysis by means of a diffractometer. 11 The rest half was used for FTIR analysis. The diffraction intensity as a function of the angle 2-theta was measured between 20° and 90°.…”

Section: Aterials and M Ethodsmentioning

confidence: 99%

Quantitative Analysis and Effect of SDF, APF, NaF on Demineralized Human Primary Enamel Using SEM, XRD, and FTIR

Jabin¹,

Nasim

Priya

et al. 2021

International Journal of Clinical Pediatric Dentistry

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Comparative assessment of the crystalline structures of powder and bulk human dental enamel by X-ray diffraction analysis

Cited by 13 publications

References 31 publications

Infrared Spectroscopic Analysis of the Inorganic Components from Teeth Exposed to Psychotherapeutic Drugs

Infrared Spectroscopic Analysis of the Inorganic Components from Teeth Exposed to Psychotherapeutic Drugs

Synthesis of a graphene oxide/agarose/hydroxyapatite biomaterial with the evaluation of antibacterial activity and initial cell attachment

Quantitative Analysis and Effect of SDF, APF, NaF on Demineralized Human Primary Enamel Using SEM, XRD, and FTIR

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