Effects of Ceramic Translucency and Thickness on Polymerization of a Photosensitive Resin Cement
We investigated the effects of lithium disilicate ceramic thickness and translucency on the degree of polymerization of light-cured resin cement using the measure of hardness. Lithium disilicate specimens of three translucencies (low, medium and high) were prepared to four thicknesses (0.5, 1.0, 2.0...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2023-10-01
|
| Series: | Oral |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2673-6373/3/4/40 |
| _version_ | 1797379795137331200 |
|---|---|
| author | Abdullah Barazanchi Jaafar Abduo Yvonne Min-Joo Lee Min-Suk Lee Kai Chun Li |
| author_facet | Abdullah Barazanchi Jaafar Abduo Yvonne Min-Joo Lee Min-Suk Lee Kai Chun Li |
| author_sort | Abdullah Barazanchi |
| collection | DOAJ |
| description | We investigated the effects of lithium disilicate ceramic thickness and translucency on the degree of polymerization of light-cured resin cement using the measure of hardness. Lithium disilicate specimens of three translucencies (low, medium and high) were prepared to four thicknesses (0.5, 1.0, 2.0 and 3.0 mm). A light-cured resin cement was cured through each of the ceramic specimens using a handheld curing light for 50 s. A 3D printed jig was used to achieve a uniform thickness of the resin cement. Directly cured resin cement was used as the control. Hardness was measured using nano-indentation to determine the degree of polymerization of the resin cement. Two-way ANOVA and Tukey post hoc tests were used to evaluate interaction between translucency and thickness. Hardness values from control specimens were assessed using the two-tailed <i>t</i>-test with the Bonferroni approach. The translucency of the specimens significantly influenced the hardness (<i>p</i> < 0.001), where a negative linear relationship between cement hardness and ceramic thickness was present for low translucency and high translucency. However, at a 0.5 mm thickness, all specimens showed similar hardness regardless of the translucency. The translucency of ceramics affected the hardness, and hence polymerization, of light-cure resin cement. However, the effect of increased thickness was a more significant factor. |
| first_indexed | 2024-03-08T20:28:11Z |
| format | Article |
| id | doaj.art-967f16cd0eeb4dacbc7f10ae2a25f0da |
| institution | Directory Open Access Journal |
| issn | 2673-6373 |
| language | English |
| last_indexed | 2024-03-08T20:28:11Z |
| publishDate | 2023-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Oral |
| spelling | doaj.art-967f16cd0eeb4dacbc7f10ae2a25f0da2023-12-22T14:30:31ZengMDPI AGOral2673-63732023-10-013449049810.3390/oral3040040Effects of Ceramic Translucency and Thickness on Polymerization of a Photosensitive Resin CementAbdullah Barazanchi0Jaafar Abduo1Yvonne Min-Joo Lee2Min-Suk Lee3Kai Chun Li4School of Dentistry, University of Adelaide, Adelaide 5000, SA, AustraliaMelbourne Dental School, University of Melbourne, Melbourne 3053, VIC, AustraliaSir John Walsh Research Institute, Faculty of Dentistry, University of Otago, Dunedin 9016, New ZealandSir John Walsh Research Institute, Faculty of Dentistry, University of Otago, Dunedin 9016, New ZealandSir John Walsh Research Institute, Faculty of Dentistry, University of Otago, Dunedin 9016, New ZealandWe investigated the effects of lithium disilicate ceramic thickness and translucency on the degree of polymerization of light-cured resin cement using the measure of hardness. Lithium disilicate specimens of three translucencies (low, medium and high) were prepared to four thicknesses (0.5, 1.0, 2.0 and 3.0 mm). A light-cured resin cement was cured through each of the ceramic specimens using a handheld curing light for 50 s. A 3D printed jig was used to achieve a uniform thickness of the resin cement. Directly cured resin cement was used as the control. Hardness was measured using nano-indentation to determine the degree of polymerization of the resin cement. Two-way ANOVA and Tukey post hoc tests were used to evaluate interaction between translucency and thickness. Hardness values from control specimens were assessed using the two-tailed <i>t</i>-test with the Bonferroni approach. The translucency of the specimens significantly influenced the hardness (<i>p</i> < 0.001), where a negative linear relationship between cement hardness and ceramic thickness was present for low translucency and high translucency. However, at a 0.5 mm thickness, all specimens showed similar hardness regardless of the translucency. The translucency of ceramics affected the hardness, and hence polymerization, of light-cure resin cement. However, the effect of increased thickness was a more significant factor.https://www.mdpi.com/2673-6373/3/4/40lithium disilicatetranslucencyceramiclight-cure resincementhardness |
| spellingShingle | Abdullah Barazanchi Jaafar Abduo Yvonne Min-Joo Lee Min-Suk Lee Kai Chun Li Effects of Ceramic Translucency and Thickness on Polymerization of a Photosensitive Resin Cement Oral lithium disilicate translucency ceramic light-cure resin cement hardness |
| title | Effects of Ceramic Translucency and Thickness on Polymerization of a Photosensitive Resin Cement |
| title_full | Effects of Ceramic Translucency and Thickness on Polymerization of a Photosensitive Resin Cement |
| title_fullStr | Effects of Ceramic Translucency and Thickness on Polymerization of a Photosensitive Resin Cement |
| title_full_unstemmed | Effects of Ceramic Translucency and Thickness on Polymerization of a Photosensitive Resin Cement |
| title_short | Effects of Ceramic Translucency and Thickness on Polymerization of a Photosensitive Resin Cement |
| title_sort | effects of ceramic translucency and thickness on polymerization of a photosensitive resin cement |
| topic | lithium disilicate translucency ceramic light-cure resin cement hardness |
| url | https://www.mdpi.com/2673-6373/3/4/40 |
| work_keys_str_mv | AT abdullahbarazanchi effectsofceramictranslucencyandthicknessonpolymerizationofaphotosensitiveresincement AT jaafarabduo effectsofceramictranslucencyandthicknessonpolymerizationofaphotosensitiveresincement AT yvonneminjoolee effectsofceramictranslucencyandthicknessonpolymerizationofaphotosensitiveresincement AT minsuklee effectsofceramictranslucencyandthicknessonpolymerizationofaphotosensitiveresincement AT kaichunli effectsofceramictranslucencyandthicknessonpolymerizationofaphotosensitiveresincement |