Short dentin etching with universal adhesives: effect on bond strength and gingival margin adaptation
Abstract Background Short dentin etching, a relatively recent technique, aims to improve resin-dentin bonding by preserving hydroxyapatite crystals within the collagen spaces. This study explores short dentin etching’s potential in mitigating over-etching issues in deep proximal dentin/cementum marg...
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2025-01-01
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| Online Access: | https://doi.org/10.1186/s12903-025-05490-9 |
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| author | Hoda Saleh Ismail Hanan Ahmed Nabil Soliman |
| author_facet | Hoda Saleh Ismail Hanan Ahmed Nabil Soliman |
| author_sort | Hoda Saleh Ismail |
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| description | Abstract Background Short dentin etching, a relatively recent technique, aims to improve resin-dentin bonding by preserving hydroxyapatite crystals within the collagen spaces. This study explores short dentin etching’s potential in mitigating over-etching issues in deep proximal dentin/cementum margins, an aspect not previously investigated. This study evaluates the microtensile bond strength (μTBS) and marginal adaptation of two universal adhesives using different etch-and-rinse strategies (15-second and 3-second etching) and self-etch strategies, both immediate and post-thermal cycling and mechanical loading. Methods Eighty-four molars underwent μTBS testing, categorized by the universal adhesive type (Tetric Uni and Prime&Bond Uni) (n = 42) and adhesive strategy (n = 14) with half tested after 24 h and the rest post aging. Forty-two molars received occluso-mesial preparations with proximal margins in dentin/cementum and were restored accordingly. Scanning electron microscope (SEM) examination of epoxy replicas for the restoration/gingival dentin interfaces was conducted after 24 h and aging. Dentin etching patterns were assessed using SEM. A three-way ANOVA evaluated μTBS data, while a two-way ANOVA and paired sample t-test analyzed marginal adaptation data (significance level is α = 0.05). Results Adhesive type, strategy, and aging significantly influenced μTBS. After aging, Tetric Uni subgroups displayed higher bond strength compared to Prime&Bond Uni subgroups. Marginal adaptation was unaffected by adhesive type or strategy, although aging reduced bond strength and adaptation for both adhesives. Conclusions The etch-and-rinse protocol yielded higher μTBS results for the HEMA-free isopropanol-based adhesive (Prime&Bond Uni). Marginal integrity was similar for both adhesives. The 3-second and 15-second etching times produced consistent results in all tests and for both adhesives. Clinical significance The adhesive protocol for bonding universal adhesives to dentin is contingent on the adhesive composition. |
| format | Article |
| id | doaj-art-ba6130339a6a41188b7a775596ec8f91 |
| institution | Kabale University |
| issn | 1472-6831 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | BMC |
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| series | BMC Oral Health |
| spelling | doaj-art-ba6130339a6a41188b7a775596ec8f912025-01-26T12:55:16ZengBMCBMC Oral Health1472-68312025-01-0125111310.1186/s12903-025-05490-9Short dentin etching with universal adhesives: effect on bond strength and gingival margin adaptationHoda Saleh Ismail0Hanan Ahmed Nabil Soliman1Conservative Dentistry Department, Faculty of Dentistry, Mansoura UniversityConservative Department, Faculty of Dentistry, Kafr Al Sheikh UniversityAbstract Background Short dentin etching, a relatively recent technique, aims to improve resin-dentin bonding by preserving hydroxyapatite crystals within the collagen spaces. This study explores short dentin etching’s potential in mitigating over-etching issues in deep proximal dentin/cementum margins, an aspect not previously investigated. This study evaluates the microtensile bond strength (μTBS) and marginal adaptation of two universal adhesives using different etch-and-rinse strategies (15-second and 3-second etching) and self-etch strategies, both immediate and post-thermal cycling and mechanical loading. Methods Eighty-four molars underwent μTBS testing, categorized by the universal adhesive type (Tetric Uni and Prime&Bond Uni) (n = 42) and adhesive strategy (n = 14) with half tested after 24 h and the rest post aging. Forty-two molars received occluso-mesial preparations with proximal margins in dentin/cementum and were restored accordingly. Scanning electron microscope (SEM) examination of epoxy replicas for the restoration/gingival dentin interfaces was conducted after 24 h and aging. Dentin etching patterns were assessed using SEM. A three-way ANOVA evaluated μTBS data, while a two-way ANOVA and paired sample t-test analyzed marginal adaptation data (significance level is α = 0.05). Results Adhesive type, strategy, and aging significantly influenced μTBS. After aging, Tetric Uni subgroups displayed higher bond strength compared to Prime&Bond Uni subgroups. Marginal adaptation was unaffected by adhesive type or strategy, although aging reduced bond strength and adaptation for both adhesives. Conclusions The etch-and-rinse protocol yielded higher μTBS results for the HEMA-free isopropanol-based adhesive (Prime&Bond Uni). Marginal integrity was similar for both adhesives. The 3-second and 15-second etching times produced consistent results in all tests and for both adhesives. Clinical significance The adhesive protocol for bonding universal adhesives to dentin is contingent on the adhesive composition.https://doi.org/10.1186/s12903-025-05490-9Universal adhesivesShort dentin etchingHEMA-free adhesivesBond strength |
| spellingShingle | Hoda Saleh Ismail Hanan Ahmed Nabil Soliman Short dentin etching with universal adhesives: effect on bond strength and gingival margin adaptation BMC Oral Health Universal adhesives Short dentin etching HEMA-free adhesives Bond strength |
| title | Short dentin etching with universal adhesives: effect on bond strength and gingival margin adaptation |
| title_full | Short dentin etching with universal adhesives: effect on bond strength and gingival margin adaptation |
| title_fullStr | Short dentin etching with universal adhesives: effect on bond strength and gingival margin adaptation |
| title_full_unstemmed | Short dentin etching with universal adhesives: effect on bond strength and gingival margin adaptation |
| title_short | Short dentin etching with universal adhesives: effect on bond strength and gingival margin adaptation |
| title_sort | short dentin etching with universal adhesives effect on bond strength and gingival margin adaptation |
| topic | Universal adhesives Short dentin etching HEMA-free adhesives Bond strength |
| url | https://doi.org/10.1186/s12903-025-05490-9 |
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