Effect of carboidiimide on thermal denaturation temperature of dentin collagen

Milena Cadenaro, Luca Fontanive, Chiara Ottavia Navarra, Pietro Gobbi, Annalisa Mazzoni, Roberto Di Lenarda, Franklin Chi Meng Tay, David Henry Pashley, Lorenzo Breschi

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Objectives 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide hydrochloride (EDC) has been shown to cross-link dentin type I collagen. Increased cross-linking usually elevates the glass transition temperature of polymers. The aim of this study was to evaluate the cross-linking reaction promoted by EDC in different aqueous concentrations by measuring the thermal denaturation temperature (Td) of human dentin collagen. Methods The Td of dehydrated collagen and of insoluble dentin matrix collagen immersed in 0.5 M or 1 M EDC aqueous solution for different treatment times was obtained using a Differential Scanning Calorimeter (DSC). Specimens were also analyzed by Energy Dispersive X-Ray Spectroscopy. Results EDC-treated dentin collagen showed a significantly higher Td than the untreated specimens when immersed in either 0.5 M EDC or 1 M EDC for 10 min or longer (p < 0.05). EDC-treated dentin collagen showed an increase of sulfur and chloride, not detectable in EDC-untreated dentin specimens. Conversely, the relative amount of carbon, nitrogen and oxygen was not modified by treatments. Significance EDC-treated dentin collagen showed a higher Td than the untreated control at all tested concentrations and immersion times. A higher Td can be considered an indirect indicator of a more resistant and highly cross-linked collagen network. More data are needed to confirm these results.

Original languageEnglish (US)
Pages (from-to)492-498
Number of pages7
JournalDental Materials
Volume32
Issue number4
DOIs
StatePublished - Apr 1 2016

Fingerprint

Denaturation
Dentin
Collagen
Hot Temperature
Temperature
Ethyldimethylaminopropyl Carbodiimide
X-Ray Emission Spectrometry
Transition Temperature
Cross Reactions
Immersion
Collagen Type I
Calorimeters
Glass
Polymers
Nitrogen
Carbon
Oxygen
Sulfur
Scanning

Keywords

  • Collagen
  • Cross-linking
  • Differential scanning calorimetry
  • EDC
  • Thermal denaturation

ASJC Scopus subject areas

  • Materials Science(all)
  • Dentistry(all)
  • Mechanics of Materials

Cite this

Cadenaro, M., Fontanive, L., Navarra, C. O., Gobbi, P., Mazzoni, A., Di Lenarda, R., ... Breschi, L. (2016). Effect of carboidiimide on thermal denaturation temperature of dentin collagen. Dental Materials, 32(4), 492-498. https://doi.org/10.1016/j.dental.2015.12.006

Effect of carboidiimide on thermal denaturation temperature of dentin collagen. / Cadenaro, Milena; Fontanive, Luca; Navarra, Chiara Ottavia; Gobbi, Pietro; Mazzoni, Annalisa; Di Lenarda, Roberto; Tay, Franklin Chi Meng; Pashley, David Henry; Breschi, Lorenzo.

In: Dental Materials, Vol. 32, No. 4, 01.04.2016, p. 492-498.

Research output: Contribution to journalArticle

Cadenaro, M, Fontanive, L, Navarra, CO, Gobbi, P, Mazzoni, A, Di Lenarda, R, Tay, FCM, Pashley, DH & Breschi, L 2016, 'Effect of carboidiimide on thermal denaturation temperature of dentin collagen', Dental Materials, vol. 32, no. 4, pp. 492-498. https://doi.org/10.1016/j.dental.2015.12.006
Cadenaro M, Fontanive L, Navarra CO, Gobbi P, Mazzoni A, Di Lenarda R et al. Effect of carboidiimide on thermal denaturation temperature of dentin collagen. Dental Materials. 2016 Apr 1;32(4):492-498. https://doi.org/10.1016/j.dental.2015.12.006
Cadenaro, Milena ; Fontanive, Luca ; Navarra, Chiara Ottavia ; Gobbi, Pietro ; Mazzoni, Annalisa ; Di Lenarda, Roberto ; Tay, Franklin Chi Meng ; Pashley, David Henry ; Breschi, Lorenzo. / Effect of carboidiimide on thermal denaturation temperature of dentin collagen. In: Dental Materials. 2016 ; Vol. 32, No. 4. pp. 492-498.
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abstract = "Objectives 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide hydrochloride (EDC) has been shown to cross-link dentin type I collagen. Increased cross-linking usually elevates the glass transition temperature of polymers. The aim of this study was to evaluate the cross-linking reaction promoted by EDC in different aqueous concentrations by measuring the thermal denaturation temperature (Td) of human dentin collagen. Methods The Td of dehydrated collagen and of insoluble dentin matrix collagen immersed in 0.5 M or 1 M EDC aqueous solution for different treatment times was obtained using a Differential Scanning Calorimeter (DSC). Specimens were also analyzed by Energy Dispersive X-Ray Spectroscopy. Results EDC-treated dentin collagen showed a significantly higher Td than the untreated specimens when immersed in either 0.5 M EDC or 1 M EDC for 10 min or longer (p < 0.05). EDC-treated dentin collagen showed an increase of sulfur and chloride, not detectable in EDC-untreated dentin specimens. Conversely, the relative amount of carbon, nitrogen and oxygen was not modified by treatments. Significance EDC-treated dentin collagen showed a higher Td than the untreated control at all tested concentrations and immersion times. A higher Td can be considered an indirect indicator of a more resistant and highly cross-linked collagen network. More data are needed to confirm these results.",
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