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Analysis of carious dentine using FTIR and ToF-SIMS.

Artikel i vetenskaplig tidskrift
Författare Ulrica S. Almhöjd
Jörgen G Norén
Anna Arvidsson
Åke Nilsson
Peter Lingström
Publicerad i Journal of Oral Health and Dental Management
Volym 13
Nummer/häfte 3
Sidor 735-744
ISSN 1583-5588
Publiceringsår 2014
Publicerad vid Institutionen för odontologi
Institutionen för kemi och molekylärbiologi
Institutionen för odontologi, sektion 3
Sidor 735-744
Språk en
Länkar oralhealth.ro/volumes/2014/volume-3...
Ämneskategorier Annan medicin och hälsovetenskap, Biokemi

Sammanfattning

Abstract Apart from the Maillard reaction, other processes, such as esterification, take place in carious tissue. The aim of the present study was to analyse sound and carious dentine in terms of ester groups and their reaction with hydrazine derivate using Fourier Transform Infrared Spectroscopy (FTIR) and Time-of-Flight Secondary Ion Mass Spectrometry (ToF-SIMS). Carious and sound dentine from human premolars were excavated in three series (Experimental Parts I-III) and separated into inner and outer layers of carious dentine. The excavated tooth material was analysed with FTIR (Part I). Carious and sound dentine were also exposed to different chemical treatments and analysed with FTIR-Attenuated Total Reflectance (FTIR-ATR; Part II) and ToF-SIMS (Part III). The FTIR absorption spectra showed that the carious tissue contained ester groups, not detected in sound dentine. The results also indicated a higher occurrence of ester groups in the inner dental caries layer than in the outer ones. Potential binding to these ester groups by hydrazine derivative was observed after different chemical treatments with both FTIR-ATR and ToF-SIMS. The results of the present study revealed ester groups unique to the carious dentine which, after reaction with hydrazine derivative, form a covalent bond not found in sound dentine. The staining of carious unique groups would be clinically helpful in detection and prevention unnecessary removal of sound dentine.

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