A laboratory pilot study on voids in flowable bulk-fill composite restorations in bovine Class-II and endodontic access cavities after sonic vibration
Abstract This pilot study investigated whether sonic-powered application of a bulk-fill resin-based composite (RBC) in Class-II or endodontic access cavities reduces void formation. The crowns and roots of 60 bovine teeth with Class-II cavities (C) and endodontic access cavities (E) respectively, we...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2023-10-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-023-45836-3 |
| _version_ | 1797636860830285824 |
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| author | Philipp Körner Sandra C. Gerber Cindy Gantner Blend Hamza Florian J. Wegehaupt Thomas Attin Shengjile Deari |
| author_facet | Philipp Körner Sandra C. Gerber Cindy Gantner Blend Hamza Florian J. Wegehaupt Thomas Attin Shengjile Deari |
| author_sort | Philipp Körner |
| collection | DOAJ |
| description | Abstract This pilot study investigated whether sonic-powered application of a bulk-fill resin-based composite (RBC) in Class-II or endodontic access cavities reduces void formation. The crowns and roots of 60 bovine teeth with Class-II cavities (C) and endodontic access cavities (E) respectively, were assigned to ten groups (C1–C5, E1–E5). Cavities were filled with RBC (SDR flow + , one increment) using different application techniques: no adaptation (C1 + E1), spreading of RBC on the cavity surfaces with a dental explorer tip (C2 + E2), low (C3 + E3) or high frequency (C4 + E4) direct activation by inserting a sonic-powered tip into RBC and high frequency indirect activation with an ultrasonic insertion tip (C5 + E5). The restorations were light-cured and investigated for voids using microtomography. The number of voids and percentage of voids related to the volume were statistically analysed (α < 0.05). While most voids in Class-II restorations were observed in C4 (p ≤ 0.0031), no significant differences were found between the other groups (p > 0.05). The percentage of voids showed no differences in E1-E5 (p > 0.05). C4 showed a significantly higher percentage of voids compared to C2 (p < 0.001). There is no benefit in applying sonic vibration when filling Class-II or endodontic access cavities. |
| first_indexed | 2024-03-11T12:40:13Z |
| format | Article |
| id | doaj.art-0095f0433a6e4126ab0aa8d11f8f064e |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-03-11T12:40:13Z |
| publishDate | 2023-10-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-0095f0433a6e4126ab0aa8d11f8f064e2023-11-05T12:17:49ZengNature PortfolioScientific Reports2045-23222023-10-0113111010.1038/s41598-023-45836-3A laboratory pilot study on voids in flowable bulk-fill composite restorations in bovine Class-II and endodontic access cavities after sonic vibrationPhilipp Körner0Sandra C. Gerber1Cindy Gantner2Blend Hamza3Florian J. Wegehaupt4Thomas Attin5Shengjile Deari6Clinic of Conservative and Preventive Dentistry, Center of Dental Medicine, University of ZurichClinic of Conservative and Preventive Dentistry, Center of Dental Medicine, University of ZurichClinic of Conservative and Preventive Dentistry, Center of Dental Medicine, University of ZurichClinic of Orthodontics and Pediatric Dentistry, Center of Dental Medicine, University of ZurichClinic of Conservative and Preventive Dentistry, Center of Dental Medicine, University of ZurichClinic of Conservative and Preventive Dentistry, Center of Dental Medicine, University of ZurichClinic of Conservative and Preventive Dentistry, Center of Dental Medicine, University of ZurichAbstract This pilot study investigated whether sonic-powered application of a bulk-fill resin-based composite (RBC) in Class-II or endodontic access cavities reduces void formation. The crowns and roots of 60 bovine teeth with Class-II cavities (C) and endodontic access cavities (E) respectively, were assigned to ten groups (C1–C5, E1–E5). Cavities were filled with RBC (SDR flow + , one increment) using different application techniques: no adaptation (C1 + E1), spreading of RBC on the cavity surfaces with a dental explorer tip (C2 + E2), low (C3 + E3) or high frequency (C4 + E4) direct activation by inserting a sonic-powered tip into RBC and high frequency indirect activation with an ultrasonic insertion tip (C5 + E5). The restorations were light-cured and investigated for voids using microtomography. The number of voids and percentage of voids related to the volume were statistically analysed (α < 0.05). While most voids in Class-II restorations were observed in C4 (p ≤ 0.0031), no significant differences were found between the other groups (p > 0.05). The percentage of voids showed no differences in E1-E5 (p > 0.05). C4 showed a significantly higher percentage of voids compared to C2 (p < 0.001). There is no benefit in applying sonic vibration when filling Class-II or endodontic access cavities.https://doi.org/10.1038/s41598-023-45836-3 |
| spellingShingle | Philipp Körner Sandra C. Gerber Cindy Gantner Blend Hamza Florian J. Wegehaupt Thomas Attin Shengjile Deari A laboratory pilot study on voids in flowable bulk-fill composite restorations in bovine Class-II and endodontic access cavities after sonic vibration Scientific Reports |
| title | A laboratory pilot study on voids in flowable bulk-fill composite restorations in bovine Class-II and endodontic access cavities after sonic vibration |
| title_full | A laboratory pilot study on voids in flowable bulk-fill composite restorations in bovine Class-II and endodontic access cavities after sonic vibration |
| title_fullStr | A laboratory pilot study on voids in flowable bulk-fill composite restorations in bovine Class-II and endodontic access cavities after sonic vibration |
| title_full_unstemmed | A laboratory pilot study on voids in flowable bulk-fill composite restorations in bovine Class-II and endodontic access cavities after sonic vibration |
| title_short | A laboratory pilot study on voids in flowable bulk-fill composite restorations in bovine Class-II and endodontic access cavities after sonic vibration |
| title_sort | laboratory pilot study on voids in flowable bulk fill composite restorations in bovine class ii and endodontic access cavities after sonic vibration |
| url | https://doi.org/10.1038/s41598-023-45836-3 |
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