Effect of chitosan and CMCS on dentin after Er:YAG laser irradiation: shear bond strength and surface morphology analysis
Objectives The aim of the present study was to evaluate the effect of chitosan and carboxymethyl chitosan (CMCS) on dentin surface morphology and bonding strength after irradiation of Er:YAG laser. Methods Eighty-four laser-irradiated dentin samples were randomly distributed into three groups (n = 28/group) according to different surface conditioning process: deionized water for 60s; 1wt% chitosan for 60s; or 1wt% CMCS for 60s. Two specimens from each group were subjected to TEM analysis to confirm the presence of extrafibrillar demineralization on dentin fibrils. Two specimens from each group were subjected to morphological analysis by SEM. Seventy-two specimens (n = 24/group) were prepared, with a composite resin cone adhered to the dentin surface, and were then randomly assigned to one of two aging processes: storage in deionized water for 24 h or a thermocycling stimulation. The shear bond strength of laser-irradiated dentin to the resin composite was determined by a universal testing machine. Data acquired in the shear bond strength test was analyzed by one-way ANOVA with the Tukey honestly significant difference post hoc test and Independent Samples t-test (α = 0.05). Results CMCS group presented demineralized zone and a relatively smooth dentin surface morphology. CMCS group had significantly higher SBS value (6.08 ± 2.12) without aging (p < 0.05). After thermal cycling, both chitosan (5.26 ± 2.30) and CMCS group (5.82 ± 1.90) presented higher bonding strength compared to control group (3.19 ± 1.32) (p < 0.05). Chitosan and CMCS group preserved the bonding strength after aging process (p > 0.05). Conclusions CMCS has the potential to be applied in conjunction with Er:YAG laser in cavity preparation and resin restoration..
Significance The unsatisfactory bonding efficacy hinders the clinical application of Er:YAG in caries removal and resin restoration. Using CMCS as primer was associated with promising dentin bonding strength and durability after laser ablation..
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2024 |
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| Erschienen: |
2024 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:24 |
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| Enthalten in: |
BMC oral health - 24(2024), 1 vom: 29. März |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Guan, Lanxi [VerfasserIn] |
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| Links: |
Volltext [lizenzpflichtig] |
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| BKL: | |
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| Themen: |
Carboxymethyl chitosan |
| Anmerkungen: |
© The Author(s) 2024 |
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| doi: |
10.1186/s12903-024-04097-w |
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| funding: |
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| Förderinstitution / Projekttitel: |
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SPR055350143 |
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| 520 | |a Objectives The aim of the present study was to evaluate the effect of chitosan and carboxymethyl chitosan (CMCS) on dentin surface morphology and bonding strength after irradiation of Er:YAG laser. Methods Eighty-four laser-irradiated dentin samples were randomly distributed into three groups (n = 28/group) according to different surface conditioning process: deionized water for 60s; 1wt% chitosan for 60s; or 1wt% CMCS for 60s. Two specimens from each group were subjected to TEM analysis to confirm the presence of extrafibrillar demineralization on dentin fibrils. Two specimens from each group were subjected to morphological analysis by SEM. Seventy-two specimens (n = 24/group) were prepared, with a composite resin cone adhered to the dentin surface, and were then randomly assigned to one of two aging processes: storage in deionized water for 24 h or a thermocycling stimulation. The shear bond strength of laser-irradiated dentin to the resin composite was determined by a universal testing machine. Data acquired in the shear bond strength test was analyzed by one-way ANOVA with the Tukey honestly significant difference post hoc test and Independent Samples t-test (α = 0.05). Results CMCS group presented demineralized zone and a relatively smooth dentin surface morphology. CMCS group had significantly higher SBS value (6.08 ± 2.12) without aging (p < 0.05). After thermal cycling, both chitosan (5.26 ± 2.30) and CMCS group (5.82 ± 1.90) presented higher bonding strength compared to control group (3.19 ± 1.32) (p < 0.05). Chitosan and CMCS group preserved the bonding strength after aging process (p > 0.05). Conclusions CMCS has the potential to be applied in conjunction with Er:YAG laser in cavity preparation and resin restoration. | ||
| 520 | |a Significance The unsatisfactory bonding efficacy hinders the clinical application of Er:YAG in caries removal and resin restoration. Using CMCS as primer was associated with promising dentin bonding strength and durability after laser ablation. | ||
| 650 | 4 | |a Extrafibrillar |7 (dpeaa)DE-He213 | |
| 650 | 4 | |a Dentin bonding |7 (dpeaa)DE-He213 | |
| 650 | 4 | |a Er:YAG laser |7 (dpeaa)DE-He213 | |
| 650 | 4 | |a Chitosan |7 (dpeaa)DE-He213 | |
| 650 | 4 | |a Carboxymethyl chitosan |7 (dpeaa)DE-He213 | |
| 700 | 1 | |a Cai, Chen |4 aut | |
| 700 | 1 | |a Cui, Jingheng |4 aut | |
| 700 | 1 | |a Huang, Yuting |4 aut | |
| 700 | 1 | |a Zhao, Jian |4 aut | |
| 700 | 1 | |a Chen, Xuan |4 aut | |
| 700 | 1 | |a Jiang, Qianzhou |4 aut | |
| 700 | 1 | |a Li, Yang |4 aut | |
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