{"title":"单波段和多波段光固化装置固化的不同块状填充树脂复合材料的聚合效率：一项比较研究。","authors":"Rahma Elsharawy, Mohamed Elawsya, Asmaa AbdAllah, Abeer ElEmbaby","doi":"10.3290/j.qi.b4984231","DOIUrl":null,"url":null,"abstract":"<p><strong>Objectives: </strong>The objective was to evaluate the polymerization efficiency of different bulk-fill resin-based composites cured by monowave and polywave light-curing units, by assessment of the degree of conversion and Vickers microhardness at different depths.</p><p><strong>Method and materials: </strong>Two commercially available bulk-fill resin-based composites were used: Filtek One Bulk Fill Restorative (3M ESPE) and Tetric N-Ceram Bulk Fill (Ivoclar Vivadent). The light-curing units utilized were two LED light-curing units: a monowave LED light-curing unit (BlueLEX LD-105, Monitex) and a polywave LED light-curing unit (Twin Wave GT-2000, Monitex). For each test, 20 cylindrical specimens (4 mm diameter, 4 mm thickness) were prepared from each bulk-fill resin-based composite using a split Teflon mold. Ten specimens were light-cured by the monowave light-curing unit and the other ten were light-cured by the polywave light-curing unit according to the manufacturer's recommendations. Attenuated total reflectance-Fourier transform infrared spectroscopy (ATR-FTIR) was used to assess the degree of conversion, and a Vickers microhardness tester was used to assess Vickers microhardness. Statistical analysis was performed using three-way ANOVA and Tukey post-hoc tests (P < .05).</p><p><strong>Results: </strong>The degree of conversion and Vickers microhardness in bulk-fill resin-based composites containing only camphorquinone as photoinitiator were similar when cured with either monowave or polywave light-curing units. However, bulk-fill resin-based composites containing a combination of photoinitiators exhibited significantly higher degree of conversion and Vickers microhardness when cured with a polywave light-curing unit. Although all groups showed statistically significant differences between the top and bottom surfaces regarding degree of conversion and Vickers microhardness, all of them showed bottom/top ratios > 80% regarding degree of conversion and Vickers microhardness.</p><p><strong>Conclusion: </strong>The polywave light-curing unit enhanced the polymerization efficiency of bulk-fill resin-based composites especially when the latter contained a combination of photoinitiators, but does not prevent the use of a monowave light-curing unit.</p>","PeriodicalId":20831,"journal":{"name":"Quintessence international","volume":"0 0","pages":"264-272"},"PeriodicalIF":1.3000,"publicationDate":"2024-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Polymerization efficiency of different bulk-fill resin composites cured by monowave and polywave light-curing units: a comparative study.\",\"authors\":\"Rahma Elsharawy, Mohamed Elawsya, Asmaa AbdAllah, Abeer ElEmbaby\",\"doi\":\"10.3290/j.qi.b4984231\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><strong>Objectives: </strong>The objective was to evaluate the polymerization efficiency of different bulk-fill resin-based composites cured by monowave and polywave light-curing units, by assessment of the degree of conversion and Vickers microhardness at different depths.</p><p><strong>Method and materials: </strong>Two commercially available bulk-fill resin-based composites were used: Filtek One Bulk Fill Restorative (3M ESPE) and Tetric N-Ceram Bulk Fill (Ivoclar Vivadent). The light-curing units utilized were two LED light-curing units: a monowave LED light-curing unit (BlueLEX LD-105, Monitex) and a polywave LED light-curing unit (Twin Wave GT-2000, Monitex). For each test, 20 cylindrical specimens (4 mm diameter, 4 mm thickness) were prepared from each bulk-fill resin-based composite using a split Teflon mold. Ten specimens were light-cured by the monowave light-curing unit and the other ten were light-cured by the polywave light-curing unit according to the manufacturer's recommendations. Attenuated total reflectance-Fourier transform infrared spectroscopy (ATR-FTIR) was used to assess the degree of conversion, and a Vickers microhardness tester was used to assess Vickers microhardness. Statistical analysis was performed using three-way ANOVA and Tukey post-hoc tests (P < .05).</p><p><strong>Results: </strong>The degree of conversion and Vickers microhardness in bulk-fill resin-based composites containing only camphorquinone as photoinitiator were similar when cured with either monowave or polywave light-curing units. However, bulk-fill resin-based composites containing a combination of photoinitiators exhibited significantly higher degree of conversion and Vickers microhardness when cured with a polywave light-curing unit. Although all groups showed statistically significant differences between the top and bottom surfaces regarding degree of conversion and Vickers microhardness, all of them showed bottom/top ratios > 80% regarding degree of conversion and Vickers microhardness.</p><p><strong>Conclusion: </strong>The polywave light-curing unit enhanced the polymerization efficiency of bulk-fill resin-based composites especially when the latter contained a combination of photoinitiators, but does not prevent the use of a monowave light-curing unit.</p>\",\"PeriodicalId\":20831,\"journal\":{\"name\":\"Quintessence international\",\"volume\":\"0 0\",\"pages\":\"264-272\"},\"PeriodicalIF\":1.3000,\"publicationDate\":\"2024-04-25\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Quintessence international\",\"FirstCategoryId\":\"3\",\"ListUrlMain\":\"https://doi.org/10.3290/j.qi.b4984231\",\"RegionNum\":4,\"RegionCategory\":\"医学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"DENTISTRY, ORAL SURGERY & MEDICINE\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Quintessence international","FirstCategoryId":"3","ListUrlMain":"https://doi.org/10.3290/j.qi.b4984231","RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"DENTISTRY, ORAL SURGERY & MEDICINE","Score":null,"Total":0}
引用次数: 0
摘要
目的通过评估不同深度的转换度（DC）和维氏显微硬度（VMH），评估单波和多波光固化装置（LCU）固化的不同团状填充树脂基复合材料（BFRBCs）的聚合效率：使用两种市售的 BFRBC：Filtek One Bulk Fill Restorative（3M ESPE）（FOBF）和 Tetric N-Ceram Bulk Fill（Ivoclar Vivadent）（TNBF）。使用的 LCU 是两个发光二极管 (LED) LCU：一个单波 LED LCU（BlueLEX LD-105，Monitex）和一个多波 LED LCU（Twin Wave GT-2000，Monitex）。在每次测试中，使用分体式聚四氟乙烯模具从每个 BFRBC 制备 20 个圆柱形试样（直径 4 毫米，厚度 4 毫米）。根据制造商的建议，十个试样用单波 LCU 光固化，另外十个用多波 LCU 光固化。使用衰减全反射-傅立叶变换红外光谱（ATR-FTIR）评估直流电。VMH 测试仪用于评估 VMH。统计分析采用三方方差分析和 Tukey 后检验（P 结果）：当使用单波或多波 LCU 固化时，仅含有樟脑醌作为光引发剂的 BFRBC 的 DC 和 VMH 相似。然而，当使用多波 LCU 固化时，含有光引发剂组合的 BFRBC 的 DC 和 VMH 明显更高。虽然所有组别在直流电和可见光热阻方面的顶面和底面差异都有统计学意义，但所有组别在直流电和可见光热阻方面的底面/顶面比率都大于 80%：结论：聚波 LCU 可提高溴化阻燃剂的聚合效率，尤其是在含有光引发剂组合的情况下，但并不妨碍使用单波 LCU。
Polymerization efficiency of different bulk-fill resin composites cured by monowave and polywave light-curing units: a comparative study.
Objectives: The objective was to evaluate the polymerization efficiency of different bulk-fill resin-based composites cured by monowave and polywave light-curing units, by assessment of the degree of conversion and Vickers microhardness at different depths.
Method and materials: Two commercially available bulk-fill resin-based composites were used: Filtek One Bulk Fill Restorative (3M ESPE) and Tetric N-Ceram Bulk Fill (Ivoclar Vivadent). The light-curing units utilized were two LED light-curing units: a monowave LED light-curing unit (BlueLEX LD-105, Monitex) and a polywave LED light-curing unit (Twin Wave GT-2000, Monitex). For each test, 20 cylindrical specimens (4 mm diameter, 4 mm thickness) were prepared from each bulk-fill resin-based composite using a split Teflon mold. Ten specimens were light-cured by the monowave light-curing unit and the other ten were light-cured by the polywave light-curing unit according to the manufacturer's recommendations. Attenuated total reflectance-Fourier transform infrared spectroscopy (ATR-FTIR) was used to assess the degree of conversion, and a Vickers microhardness tester was used to assess Vickers microhardness. Statistical analysis was performed using three-way ANOVA and Tukey post-hoc tests (P < .05).
Results: The degree of conversion and Vickers microhardness in bulk-fill resin-based composites containing only camphorquinone as photoinitiator were similar when cured with either monowave or polywave light-curing units. However, bulk-fill resin-based composites containing a combination of photoinitiators exhibited significantly higher degree of conversion and Vickers microhardness when cured with a polywave light-curing unit. Although all groups showed statistically significant differences between the top and bottom surfaces regarding degree of conversion and Vickers microhardness, all of them showed bottom/top ratios > 80% regarding degree of conversion and Vickers microhardness.
Conclusion: The polywave light-curing unit enhanced the polymerization efficiency of bulk-fill resin-based composites especially when the latter contained a combination of photoinitiators, but does not prevent the use of a monowave light-curing unit.
期刊介绍：
QI has a new contemporary design but continues its time-honored tradition of serving the needs of the general practitioner with clinically relevant articles that are scientifically based. Dr Eli Eliav and his editorial board are dedicated to practitioners worldwide through the presentation of high-level research, useful clinical procedures, and educational short case reports and clinical notes. Rigorous but timely manuscript review is the first order of business in their quest to publish a high-quality selection of articles in the multiple specialties and disciplines that encompass dentistry.
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