Assessment of cuspal deflection and microleakage in Class II composite restorations: Comparative analysis between nanocomposite and bulk-fill composite resin.
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| Title: | Assessment of cuspal deflection and microleakage in Class II composite restorations: Comparative analysis between nanocomposite and bulk-fill composite resin. |
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| Authors: | Ghosh, Abhijit (AUTHOR), Desai, Priti D. (AUTHOR), Maity, Ipsita (AUTHOR), Mazumdar, Paromita (AUTHOR) |
| Source: | Journal of Oral Research & Review. Jul-Dec2025, Vol. 17 Issue 2, p107-112. 6p. |
| Subjects: | Tooth cervix, Statistical significance, Dental fillings, Methylene blue, Cosmetic dentistry |
| Abstract: | Background: Composite resins are widely used for esthetic dental restorations, but polymerization shrinkage can cause cuspal deflection and microleakage, compromising restoration longevity. Aim: The study aimed to evaluate cuspal displacement and marginal leakage in Class II restorations employing bulk-fill composite resin (Filtek Bulk Fill) and nanocomposite (Filtek Z350 XT). Materials and Methods: Thirty-two intact maxillary first premolars obtained immediately postextraction were embedded 3 mm below the cementoenamel junction in acrylic resin. Two composite-filled plastic molds were fixed on the palatal and buccal cusps as points of reference, and buccopalatal widths (BPWs) were measured using a digital micrometer. Standardized Class II mesio–occluso–distal (MOD) cavities (2 mm width and 2 mm depth) were prepared and restored with either nanocomposite (Group A) or bulk-fill composite (Group B). After restoration, BPWs were remeasured to assess cuspal deflection. Samples underwent 500 thermal cycles (5°C–55°C), were stained with 2% methylene blue, and sectioned for microleakage analysis under a stereomicroscope at ×20. Differences between the groups were analyzed, with a significance level of 5%. Results: Group A exhibited a greater average cuspal deflection (0.144 ± 0.26 mm) compared to Group B (0.07 ± 0.16 mm), even though this discrepancy was not notably significant (P = 0.3). After thermocycling, Group A also had greater cuspal deflection (P = 0.61) and higher median microleakage (1.5 [1–2.75]) compared to Group B (P = 0.46). Conclusion: Nanocomposite showed higher cuspal deflection and microleakage than bulk-fill composite in large MOD cavities, although these differences were not statistically significant. [ABSTRACT FROM AUTHOR] |
| Copyright of Journal of Oral Research & Review is the property of Wolters Kluwer India Pvt Ltd 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: | Psychology and Behavioral Sciences Collection |
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| Header | DbId: pbh DbLabel: Psychology and Behavioral Sciences Collection An: 186841912 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Assessment of cuspal deflection and microleakage in Class II composite restorations: Comparative analysis between nanocomposite and bulk-fill composite resin. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Ghosh%2C+Abhijit%22">Ghosh, Abhijit</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Desai%2C+Priti+D%2E%22">Desai, Priti D.</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Maity%2C+Ipsita%22">Maity, Ipsita</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Mazumdar%2C+Paromita%22">Mazumdar, Paromita</searchLink> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Journal+of+Oral+Research+%26+Review%22">Journal of Oral Research & Review</searchLink>. Jul-Dec2025, Vol. 17 Issue 2, p107-112. 6p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Tooth+cervix%22">Tooth cervix</searchLink><br /><searchLink fieldCode="DE" term="%22Statistical+significance%22">Statistical significance</searchLink><br /><searchLink fieldCode="DE" term="%22Dental+fillings%22">Dental fillings</searchLink><br /><searchLink fieldCode="DE" term="%22Methylene+blue%22">Methylene blue</searchLink><br /><searchLink fieldCode="DE" term="%22Cosmetic+dentistry%22">Cosmetic dentistry</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Background: Composite resins are widely used for esthetic dental restorations, but polymerization shrinkage can cause cuspal deflection and microleakage, compromising restoration longevity. Aim: The study aimed to evaluate cuspal displacement and marginal leakage in Class II restorations employing bulk-fill composite resin (Filtek Bulk Fill) and nanocomposite (Filtek Z350 XT). Materials and Methods: Thirty-two intact maxillary first premolars obtained immediately postextraction were embedded 3 mm below the cementoenamel junction in acrylic resin. Two composite-filled plastic molds were fixed on the palatal and buccal cusps as points of reference, and buccopalatal widths (BPWs) were measured using a digital micrometer. Standardized Class II mesio–occluso–distal (MOD) cavities (2 mm width and 2 mm depth) were prepared and restored with either nanocomposite (Group A) or bulk-fill composite (Group B). After restoration, BPWs were remeasured to assess cuspal deflection. Samples underwent 500 thermal cycles (5°C–55°C), were stained with 2% methylene blue, and sectioned for microleakage analysis under a stereomicroscope at ×20. Differences between the groups were analyzed, with a significance level of 5%. Results: Group A exhibited a greater average cuspal deflection (0.144 ± 0.26 mm) compared to Group B (0.07 ± 0.16 mm), even though this discrepancy was not notably significant (P = 0.3). After thermocycling, Group A also had greater cuspal deflection (P = 0.61) and higher median microleakage (1.5 [1–2.75]) compared to Group B (P = 0.46). Conclusion: Nanocomposite showed higher cuspal deflection and microleakage than bulk-fill composite in large MOD cavities, although these differences were not statistically significant. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Journal of Oral Research & Review is the property of Wolters Kluwer India Pvt Ltd 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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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.4103/jorr.jorr_24_25 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 6 StartPage: 107 Subjects: – SubjectFull: Tooth cervix Type: general – SubjectFull: Statistical significance Type: general – SubjectFull: Dental fillings Type: general – SubjectFull: Methylene blue Type: general – SubjectFull: Cosmetic dentistry Type: general Titles: – TitleFull: Assessment of cuspal deflection and microleakage in Class II composite restorations: Comparative analysis between nanocomposite and bulk-fill composite resin. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Ghosh, Abhijit – PersonEntity: Name: NameFull: Desai, Priti D. – PersonEntity: Name: NameFull: Maity, Ipsita – PersonEntity: Name: NameFull: Mazumdar, Paromita IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 07 Text: Jul-Dec2025 Type: published Y: 2025 Identifiers: – Type: issn-print Value: 22494987 Numbering: – Type: volume Value: 17 – Type: issue Value: 2 Titles: – TitleFull: Journal of Oral Research & Review Type: main |
| ResultId | 1 |
