Effect of four different mono and multi-wave light-curing units on the Knoop hardness of veneer resin composites
To evaluate the effect of mono and multi-wave light-curing units (LCUs) on the Knoop hardness of resin-based composites (RBC) that use different photoinitiators. Central incisor-shaped specimens 12 mm long, 9 mm wide, and 1.5 mm thick were made from 2 RBCs that use different photoinitiators: Tetric...
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| Veröffentlicht in: | Dental materials 2024-01, Vol.40 (1), p.80-89 |
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| creator | Peres, Thiago Silva de Quirino Oliveira, Helena Letícia Mendoza, Lilibeth Carola Leyton Ribeiro, Maria Tereza Hordones Carlo, Hugo Lemes Price, Richard Bengt Soares, Carlos José |
| description | To evaluate the effect of mono and multi-wave light-curing units (LCUs) on the Knoop hardness of resin-based composites (RBC) that use different photoinitiators.
Central incisor-shaped specimens 12 mm long, 9 mm wide, and 1.5 mm thick were made from 2 RBCs that use different photoinitiators: Tetric N-Ceram (Ivoclar Vivadent) - and Vittra APS (FGM), both A2E shade. They were light-cured with 4 different LCUs: two claimed to be multi-wave - VALO Grand (Ultradent) and Emitter Now Duo (Schuster); and two were monowave - Radii Xpert (SDI) and Elipar DeepCure-L (3 M Oral Care) using 2 different light exposure protocols: one 40 s exposure centered over the specimen; and two 20 s light exposures that delivered light from two positions to better cover the entire tooth. 16 groups with 10 specimens in each group were made. The Knoop hardness (KH, kg/mm
) was measured at the top and bottom of the specimen in the center and at the cervical, incisal, mesial, and distal peripheral regions. The active tip diameters (mm) and spectral radiant powers (mW/nm) of the LCUs were measured with and without the interposition of the RBC, as well as the radiant exposure beam profiles (J/cm²) delivered to the top of the RBCs. The data was analyzed using Three-way ANOVA and Tukey's tests (α = 0.05).
The VALO Grand (1029 mW) emitted twice the power of the Radii Xpert (500 mW). The KH values of VI and TN resin composite specimens were significantly affected by the LCU used (p |
| doi_str_mv | 10.1016/j.dental.2023.10.019 |
| format | Article |
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Central incisor-shaped specimens 12 mm long, 9 mm wide, and 1.5 mm thick were made from 2 RBCs that use different photoinitiators: Tetric N-Ceram (Ivoclar Vivadent) - and Vittra APS (FGM), both A2E shade. They were light-cured with 4 different LCUs: two claimed to be multi-wave - VALO Grand (Ultradent) and Emitter Now Duo (Schuster); and two were monowave - Radii Xpert (SDI) and Elipar DeepCure-L (3 M Oral Care) using 2 different light exposure protocols: one 40 s exposure centered over the specimen; and two 20 s light exposures that delivered light from two positions to better cover the entire tooth. 16 groups with 10 specimens in each group were made. The Knoop hardness (KH, kg/mm
) was measured at the top and bottom of the specimen in the center and at the cervical, incisal, mesial, and distal peripheral regions. The active tip diameters (mm) and spectral radiant powers (mW/nm) of the LCUs were measured with and without the interposition of the RBC, as well as the radiant exposure beam profiles (J/cm²) delivered to the top of the RBCs. The data was analyzed using Three-way ANOVA and Tukey's tests (α = 0.05).
The VALO Grand (1029 mW) emitted twice the power of the Radii Xpert (500 mW). The KH values of VI and TN resin composite specimens were significantly affected by the LCU used (p < .001), the measurement location (p < .001), and the surface of the specimen (p < .001). LCUs with wider tip diameters produced greater Knoop hardness values at the peripheries of the 12 mm of long, 9 mm wide specimens. In general, the VALO Grand produced the highest KH values, followed by Elipar DeepCure-L, then by Radii Xpert. The Emitter Now Duo LCU produced the lowest values. Exposing the veneers from two locations reduced the differences between the LCUs and the effect of the measurement location. Only the VALO Grand could fully cover the composite veneer with light when the two locations were used.
The light tip must cover the entire restoration to photocure the RBC beneath the light tip.</description><identifier>ISSN: 0109-5641</identifier><identifier>EISSN: 1879-0097</identifier><identifier>DOI: 10.1016/j.dental.2023.10.019</identifier><identifier>PMID: 37919111</identifier><language>eng</language><publisher>England</publisher><subject>Composite Resins ; Curing Lights, Dental ; Dental Materials ; Hardness ; Light-Curing of Dental Adhesives ; Materials Testing ; Polymerization</subject><ispartof>Dental materials, 2024-01, Vol.40 (1), p.80-89</ispartof><rights>Copyright © 2023. Published by Elsevier Inc.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><cites>FETCH-LOGICAL-c256t-eea9d25f6175301c059655c6a41e11d1cf27301ef9302be75f6053d82cdb9a6d3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27924,27925</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/37919111$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Peres, Thiago Silva</creatorcontrib><creatorcontrib>de Quirino Oliveira, Helena Letícia</creatorcontrib><creatorcontrib>Mendoza, Lilibeth Carola Leyton</creatorcontrib><creatorcontrib>Ribeiro, Maria Tereza Hordones</creatorcontrib><creatorcontrib>Carlo, Hugo Lemes</creatorcontrib><creatorcontrib>Price, Richard Bengt</creatorcontrib><creatorcontrib>Soares, Carlos José</creatorcontrib><title>Effect of four different mono and multi-wave light-curing units on the Knoop hardness of veneer resin composites</title><title>Dental materials</title><addtitle>Dent Mater</addtitle><description>To evaluate the effect of mono and multi-wave light-curing units (LCUs) on the Knoop hardness of resin-based composites (RBC) that use different photoinitiators.
Central incisor-shaped specimens 12 mm long, 9 mm wide, and 1.5 mm thick were made from 2 RBCs that use different photoinitiators: Tetric N-Ceram (Ivoclar Vivadent) - and Vittra APS (FGM), both A2E shade. They were light-cured with 4 different LCUs: two claimed to be multi-wave - VALO Grand (Ultradent) and Emitter Now Duo (Schuster); and two were monowave - Radii Xpert (SDI) and Elipar DeepCure-L (3 M Oral Care) using 2 different light exposure protocols: one 40 s exposure centered over the specimen; and two 20 s light exposures that delivered light from two positions to better cover the entire tooth. 16 groups with 10 specimens in each group were made. The Knoop hardness (KH, kg/mm
) was measured at the top and bottom of the specimen in the center and at the cervical, incisal, mesial, and distal peripheral regions. The active tip diameters (mm) and spectral radiant powers (mW/nm) of the LCUs were measured with and without the interposition of the RBC, as well as the radiant exposure beam profiles (J/cm²) delivered to the top of the RBCs. The data was analyzed using Three-way ANOVA and Tukey's tests (α = 0.05).
The VALO Grand (1029 mW) emitted twice the power of the Radii Xpert (500 mW). The KH values of VI and TN resin composite specimens were significantly affected by the LCU used (p < .001), the measurement location (p < .001), and the surface of the specimen (p < .001). LCUs with wider tip diameters produced greater Knoop hardness values at the peripheries of the 12 mm of long, 9 mm wide specimens. In general, the VALO Grand produced the highest KH values, followed by Elipar DeepCure-L, then by Radii Xpert. The Emitter Now Duo LCU produced the lowest values. Exposing the veneers from two locations reduced the differences between the LCUs and the effect of the measurement location. Only the VALO Grand could fully cover the composite veneer with light when the two locations were used.
The light tip must cover the entire restoration to photocure the RBC beneath the light tip.</description><subject>Composite Resins</subject><subject>Curing Lights, Dental</subject><subject>Dental Materials</subject><subject>Hardness</subject><subject>Light-Curing of Dental Adhesives</subject><subject>Materials Testing</subject><subject>Polymerization</subject><issn>0109-5641</issn><issn>1879-0097</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2024</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNo9kEFP3DAQha2Kqiy0_6CqfOSSZcbeOOsjQrRFIHGh58hrj1mvEjvYDlX_fbNa2tPoPb33RvoY-4qwRkB1fVg7itUMawFCLtYaUH9gK9x2ugHQ3RlbAYJuWrXBc3ZRygEANkLjJ3YuO40aEVdsuvOebOXJc5_mzF1YdF6G-Zhi4iY6Ps5DDc1v80Z8CC_72tg5h_jC5xhq4Snyuif-EFOa-N5kF6mU49wbRaLMM5UQuU3jlEqoVD6zj94Mhb6830v26_vd8-3P5vHpx_3tzWNjRatqQ2S0E61X2LUS0EKrVdtaZTZIiA6tF93ik9cSxI66JQmtdFth3U4b5eQluzrtTjm9zlRqP4ZiaRhMpDSXXmy3SkroVLdEN6eozamUTL6fchhN_tMj9EfW_aE_se6PrI_uwnqpfXv_MO9Gcv9L_-DKv5F9faw</recordid><startdate>202401</startdate><enddate>202401</enddate><creator>Peres, Thiago Silva</creator><creator>de Quirino Oliveira, Helena Letícia</creator><creator>Mendoza, Lilibeth Carola Leyton</creator><creator>Ribeiro, Maria Tereza Hordones</creator><creator>Carlo, Hugo Lemes</creator><creator>Price, Richard Bengt</creator><creator>Soares, Carlos José</creator><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope></search><sort><creationdate>202401</creationdate><title>Effect of four different mono and multi-wave light-curing units on the Knoop hardness of veneer resin composites</title><author>Peres, Thiago Silva ; de Quirino Oliveira, Helena Letícia ; Mendoza, Lilibeth Carola Leyton ; Ribeiro, Maria Tereza Hordones ; Carlo, Hugo Lemes ; Price, Richard Bengt ; Soares, Carlos José</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c256t-eea9d25f6175301c059655c6a41e11d1cf27301ef9302be75f6053d82cdb9a6d3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2024</creationdate><topic>Composite Resins</topic><topic>Curing Lights, Dental</topic><topic>Dental Materials</topic><topic>Hardness</topic><topic>Light-Curing of Dental Adhesives</topic><topic>Materials Testing</topic><topic>Polymerization</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Peres, Thiago Silva</creatorcontrib><creatorcontrib>de Quirino Oliveira, Helena Letícia</creatorcontrib><creatorcontrib>Mendoza, Lilibeth Carola Leyton</creatorcontrib><creatorcontrib>Ribeiro, Maria Tereza Hordones</creatorcontrib><creatorcontrib>Carlo, Hugo Lemes</creatorcontrib><creatorcontrib>Price, Richard Bengt</creatorcontrib><creatorcontrib>Soares, Carlos José</creatorcontrib><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>Dental materials</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Peres, Thiago Silva</au><au>de Quirino Oliveira, Helena Letícia</au><au>Mendoza, Lilibeth Carola Leyton</au><au>Ribeiro, Maria Tereza Hordones</au><au>Carlo, Hugo Lemes</au><au>Price, Richard Bengt</au><au>Soares, Carlos José</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Effect of four different mono and multi-wave light-curing units on the Knoop hardness of veneer resin composites</atitle><jtitle>Dental materials</jtitle><addtitle>Dent Mater</addtitle><date>2024-01</date><risdate>2024</risdate><volume>40</volume><issue>1</issue><spage>80</spage><epage>89</epage><pages>80-89</pages><issn>0109-5641</issn><eissn>1879-0097</eissn><abstract>To evaluate the effect of mono and multi-wave light-curing units (LCUs) on the Knoop hardness of resin-based composites (RBC) that use different photoinitiators.
Central incisor-shaped specimens 12 mm long, 9 mm wide, and 1.5 mm thick were made from 2 RBCs that use different photoinitiators: Tetric N-Ceram (Ivoclar Vivadent) - and Vittra APS (FGM), both A2E shade. They were light-cured with 4 different LCUs: two claimed to be multi-wave - VALO Grand (Ultradent) and Emitter Now Duo (Schuster); and two were monowave - Radii Xpert (SDI) and Elipar DeepCure-L (3 M Oral Care) using 2 different light exposure protocols: one 40 s exposure centered over the specimen; and two 20 s light exposures that delivered light from two positions to better cover the entire tooth. 16 groups with 10 specimens in each group were made. The Knoop hardness (KH, kg/mm
) was measured at the top and bottom of the specimen in the center and at the cervical, incisal, mesial, and distal peripheral regions. The active tip diameters (mm) and spectral radiant powers (mW/nm) of the LCUs were measured with and without the interposition of the RBC, as well as the radiant exposure beam profiles (J/cm²) delivered to the top of the RBCs. The data was analyzed using Three-way ANOVA and Tukey's tests (α = 0.05).
The VALO Grand (1029 mW) emitted twice the power of the Radii Xpert (500 mW). The KH values of VI and TN resin composite specimens were significantly affected by the LCU used (p < .001), the measurement location (p < .001), and the surface of the specimen (p < .001). LCUs with wider tip diameters produced greater Knoop hardness values at the peripheries of the 12 mm of long, 9 mm wide specimens. In general, the VALO Grand produced the highest KH values, followed by Elipar DeepCure-L, then by Radii Xpert. The Emitter Now Duo LCU produced the lowest values. Exposing the veneers from two locations reduced the differences between the LCUs and the effect of the measurement location. Only the VALO Grand could fully cover the composite veneer with light when the two locations were used.
The light tip must cover the entire restoration to photocure the RBC beneath the light tip.</abstract><cop>England</cop><pmid>37919111</pmid><doi>10.1016/j.dental.2023.10.019</doi><tpages>10</tpages></addata></record> |
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| source | MEDLINE; Access via ScienceDirect (Elsevier) |
| subjects | Composite Resins Curing Lights, Dental Dental Materials Hardness Light-Curing of Dental Adhesives Materials Testing Polymerization |
| title | Effect of four different mono and multi-wave light-curing units on the Knoop hardness of veneer resin composites |
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