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The effect of thermocycling regimens on the nanoleakage of dentin bonding systems

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Title: The effect of thermocycling regimens on the nanoleakage of dentin bonding systems
Authors: Li, Heping1, Burrow, Michael F. mfburrow@unimelb.edu.au, Tyas, Martin J.1
Source: Dental Materials. May2002, Vol. 18 Issue 3, p189. 8p.
Subjects: Dental bonding, Dentin
Abstract: Objectives: The purpose of this study was to compare nanoleakage associated with polished and fractured specimens, and evaluate the effects of thermocycling on nanoleakage.Methods: The dentin bonding systems used in this study were PermaQuik and Prime and Bond NT (PBNT). Flat occlusal dentin surfaces and class V cavities from extracted human molars were bonded with one of the dentin bonding systems. With or without thermocycling, samples were immersed in a 50% w/v solution of silver nitrate for 24 h, and exposed to photodeveloping solution for 8 h. The specimens were cut or fractured, and mounted on stubs, carbon coated and observed in a Field Emission-SEM using backscattered electron mode.Results: Polished and fractured specimens showed similar nanoleakage patterns for both dentin-bonding systems. Thermocycling with regimens of different temperatures and number of cycles did not result in different nanoleakage patterns and leakage lengths in controls and thermocycled groups. PBNT combined with non-rinse conditioner (NRC) produced no significant difference in nanoleakage length, but a somewhat different nanoleakage pattern, compared with PBNT and 34% phosphoric acid.Significance: Thermocycling does not have an effect on nanoleakage of dentin bonding systems. The smearing effect from sectioning and polishing procedures does not affect the nanoleakage result. [Copyright &y& Elsevier]
Copyright of Dental Materials is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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Header DbId: egs
DbLabel: Engineering Source
An: 7749216
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
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  Data: The effect of thermocycling regimens on the nanoleakage of dentin bonding systems
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  Data: <searchLink fieldCode="AR" term="%22Li%2C+Heping%22">Li, Heping</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Burrow%2C+Michael+F%2E%22">Burrow, Michael F.</searchLink><i> mfburrow@unimelb.edu.au</i><br /><searchLink fieldCode="AR" term="%22Tyas%2C+Martin+J%2E%22">Tyas, Martin J.</searchLink><relatesTo>1</relatesTo>
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  Data: <searchLink fieldCode="JN" term="%22Dental+Materials%22">Dental Materials</searchLink>. May2002, Vol. 18 Issue 3, p189. 8p.
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  Data: Objectives: The purpose of this study was to compare nanoleakage associated with polished and fractured specimens, and evaluate the effects of thermocycling on nanoleakage.Methods: The dentin bonding systems used in this study were PermaQuik and Prime and Bond NT (PBNT). Flat occlusal dentin surfaces and class V cavities from extracted human molars were bonded with one of the dentin bonding systems. With or without thermocycling, samples were immersed in a 50% w/v solution of silver nitrate for 24 h, and exposed to photodeveloping solution for 8 h. The specimens were cut or fractured, and mounted on stubs, carbon coated and observed in a Field Emission-SEM using backscattered electron mode.Results: Polished and fractured specimens showed similar nanoleakage patterns for both dentin-bonding systems. Thermocycling with regimens of different temperatures and number of cycles did not result in different nanoleakage patterns and leakage lengths in controls and thermocycled groups. PBNT combined with non-rinse conditioner (NRC) produced no significant difference in nanoleakage length, but a somewhat different nanoleakage pattern, compared with PBNT and 34% phosphoric acid.Significance: Thermocycling does not have an effect on nanoleakage of dentin bonding systems. The smearing effect from sectioning and polishing procedures does not affect the nanoleakage result. [Copyright &y& Elsevier]
– Name: AbstractSuppliedCopyright
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  Data: <i>Copyright of Dental Materials is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1016/S0109-5641(01)00081-1
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      – Code: eng
        Text: English
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      – SubjectFull: Dentin
        Type: general
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      – TitleFull: The effect of thermocycling regimens on the nanoleakage of dentin bonding systems
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              Text: May2002
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              Y: 2002
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