Effect of oral environmental pH on the dynamic characterization of bioactive restorative materials
The objective of this study was to investigate the effects of oral environmental pH on the viscoelastic properties of bioactive restorative materials (BRMs) by using dynamic mechanical analysis. Stainless steel molds were used to fabricate 40 beam-shaped specimens (12 × 2 × 2 mm) for each materi...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Penerbit Universiti Kebangsaan Malaysia
2022
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| Online Access: | http://journalarticle.ukm.my/20652/ http://journalarticle.ukm.my/20652/1/20.pdf |
| _version_ | 1848815159560110080 |
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| author | Ong, Joshua Ee Xin Yap, Adrian U-Jin Azwatee Abdul Aziz, Noor Azlin Yahya, |
| author_facet | Ong, Joshua Ee Xin Yap, Adrian U-Jin Azwatee Abdul Aziz, Noor Azlin Yahya, |
| author_sort | Ong, Joshua Ee Xin |
| building | UKM Institutional Repository |
| collection | Online Access |
| description | The objective of this study was to investigate the effects of oral environmental pH on the viscoelastic properties of
bioactive restorative materials (BRMs) by using dynamic mechanical analysis. Stainless steel molds were used to
fabricate 40 beam-shaped specimens (12 × 2 × 2 mm) for each material. The specimens were finished, measured,
randomly divided into four groups (n = 10), and immersed in aqueous solutions of pH 3.0, 5.0, 6.8 and 10.0 at 37 °C
for seven days. The specimens were then subjected to dynamic mechanical analysis with a 5 N load and frequency
range of 0.1-10.0 Hz. Data were analyzed using one-way ANOVA/Dunnet T3’s test (α = 0.05). Mean elastic modulus
spanned from 2.68 ± 0.17 to 6.49 ± 0.71 GPa, while viscous modulus ranged from 0.43 ± 0.03 to 0.62 ± 0.12 GPa.
Loss tangent differed from 77.30 ± 4.90 to 164.50 ± 9.12. Significant differences among pH were discerned for (i)
Elastic modulus: Cention N - pH 3.0, 5.0, 10.0 > 6.8; Activa Bioactive - pH 3.0, 6.8, 10.0 > 5.0, (ii) Viscous modulus:
Cention N - pH 3.0, 5.0, 10.0 > 6.8, and (iii) Loss tangent: Activa Bioactive - pH 5.0 > 3.0, 6.8, 10.0. Significant
differences in viscoelastic properties were noted among the BRMs with Activa Bioactive presenting the lowest elastic
modulus for all pH. Immersion of all materials in pH 6.8 yielded the highest elastic modulus, except for Activa
Bioactive. The effects of environmental pH on viscoelastic properties of BRMs are material-dependent. |
| first_indexed | 2025-11-15T00:45:33Z |
| format | Article |
| id | oai:generic.eprints.org:20652 |
| institution | Universiti Kebangasaan Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T00:45:33Z |
| publishDate | 2022 |
| publisher | Penerbit Universiti Kebangsaan Malaysia |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | oai:generic.eprints.org:206522022-12-07T00:42:33Z http://journalarticle.ukm.my/20652/ Effect of oral environmental pH on the dynamic characterization of bioactive restorative materials Ong, Joshua Ee Xin Yap, Adrian U-Jin Azwatee Abdul Aziz, Noor Azlin Yahya, The objective of this study was to investigate the effects of oral environmental pH on the viscoelastic properties of bioactive restorative materials (BRMs) by using dynamic mechanical analysis. Stainless steel molds were used to fabricate 40 beam-shaped specimens (12 × 2 × 2 mm) for each material. The specimens were finished, measured, randomly divided into four groups (n = 10), and immersed in aqueous solutions of pH 3.0, 5.0, 6.8 and 10.0 at 37 °C for seven days. The specimens were then subjected to dynamic mechanical analysis with a 5 N load and frequency range of 0.1-10.0 Hz. Data were analyzed using one-way ANOVA/Dunnet T3’s test (α = 0.05). Mean elastic modulus spanned from 2.68 ± 0.17 to 6.49 ± 0.71 GPa, while viscous modulus ranged from 0.43 ± 0.03 to 0.62 ± 0.12 GPa. Loss tangent differed from 77.30 ± 4.90 to 164.50 ± 9.12. Significant differences among pH were discerned for (i) Elastic modulus: Cention N - pH 3.0, 5.0, 10.0 > 6.8; Activa Bioactive - pH 3.0, 6.8, 10.0 > 5.0, (ii) Viscous modulus: Cention N - pH 3.0, 5.0, 10.0 > 6.8, and (iii) Loss tangent: Activa Bioactive - pH 5.0 > 3.0, 6.8, 10.0. Significant differences in viscoelastic properties were noted among the BRMs with Activa Bioactive presenting the lowest elastic modulus for all pH. Immersion of all materials in pH 6.8 yielded the highest elastic modulus, except for Activa Bioactive. The effects of environmental pH on viscoelastic properties of BRMs are material-dependent. Penerbit Universiti Kebangsaan Malaysia 2022-09 Article PeerReviewed application/pdf en http://journalarticle.ukm.my/20652/1/20.pdf Ong, Joshua Ee Xin and Yap, Adrian U-Jin and Azwatee Abdul Aziz, and Noor Azlin Yahya, (2022) Effect of oral environmental pH on the dynamic characterization of bioactive restorative materials. Sains Malaysiana, 51 (9). pp. 2999-3008. ISSN 0126-6039 https://www.ukm.my/jsm/malay_journals/jilid51bil9_2022/KandunganJilid51Bil9_2022.html |
| spellingShingle | Ong, Joshua Ee Xin Yap, Adrian U-Jin Azwatee Abdul Aziz, Noor Azlin Yahya, Effect of oral environmental pH on the dynamic characterization of bioactive restorative materials |
| title | Effect of oral environmental pH on the dynamic characterization of bioactive restorative materials |
| title_full | Effect of oral environmental pH on the dynamic characterization of bioactive restorative materials |
| title_fullStr | Effect of oral environmental pH on the dynamic characterization of bioactive restorative materials |
| title_full_unstemmed | Effect of oral environmental pH on the dynamic characterization of bioactive restorative materials |
| title_short | Effect of oral environmental pH on the dynamic characterization of bioactive restorative materials |
| title_sort | effect of oral environmental ph on the dynamic characterization of bioactive restorative materials |
| url | http://journalarticle.ukm.my/20652/ http://journalarticle.ukm.my/20652/ http://journalarticle.ukm.my/20652/1/20.pdf |