Imam Akbar Sutejo , Sinuo Zhang , Chang Woo Gal , Yeong-Jin Choi , Honghyun Park , Sungmin Kim , Hyung-bong Lim , Hui-suk Yun
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The mechanical properties were also evaluated. Color measurement and comparison were done using a colorimeter (lightness (L*), green-red color (a*), and blue-yellow color (b*)), and the changes were calculated by CIEDE2000 (ΔE<sub>00</sub>), translucency parameter (TP) and whiteness index (WI<sub>D</sub>). The composition color analysis results were then applied to produce a color-graded temporary veneer for mimicking a natural look.</p></div><div><h3>Result</h3><p>Mechanically, all composition result in adequate bending strength with maximum achievable strength of 111.64 MPa. At the same time, the composite color was affected by each constituent differently. The L* value, which indicates the color lightness of the composite, was considerably tuned by the TiO<sub>2</sub> pigment, whereas Ba<sub>2</sub>SiO<sub>4</sub> filler only triggered minor changes. Photoinitiator concentration significantly affected the yellowness, indicated by the increased b* value. Similar tendency also observed toward the calculated TP and WI<sub>D</sub> as well. Based on these evaluations, color-graded temporary veneer successfully generated, matching the VITA A3, A2, and B1 shades gradation. However, the stability of the composite color decreased at high amounts of Ba<sub>2</sub>SiO<sub>4</sub> and photoinitiator.</p></div><div><h3>Significance</h3><p>The study presents a composition guide for fabricating temporary patient-specific color-graded veneer. It provides insights on the effect of the constituent material on dental esthetics.</p></div>","PeriodicalId":298,"journal":{"name":"Dental Materials","volume":"40 10","pages":"Pages 1643-1651"},"PeriodicalIF":4.6000,"publicationDate":"2024-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0109564124002264/pdfft?md5=c8d8d2cc9164e133fa01dc09f7e24ee0&pid=1-s2.0-S0109564124002264-main.pdf","citationCount":"0","resultStr":"{\"title\":\"Composition control of additively manufactured color-graded temporary veneer\",\"authors\":\"Imam Akbar Sutejo , Sinuo Zhang , Chang Woo Gal , Yeong-Jin Choi , Honghyun Park , Sungmin Kim , Hyung-bong Lim , Hui-suk Yun\",\"doi\":\"10.1016/j.dental.2024.07.027\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><h3>Objective</h3><p>The aim of this study was to design and assess composite resin composition for patient-specific esthetic color-graded temporary veneer.</p></div><div><h3>Methods</h3><p>Various compositions of composite structures (assorted by Ba<sub>2</sub>SiO<sub>4</sub> filler, TiO<sub>2</sub> pigment, and photoinitiator) were prepared via additive manufacturing with 3 s UV exposure (405 nm, 10 W/cm<sup>2</sup>) per 50 µm thick layer followed by 20 min post-curing treatment after fabrication. The effect of each component on the generated color shades was observed and compared to the commonly used VITA shade guide. The coloration was explored by staining aging treatment under dry, wet, artificial saliva environments, coffee, and cola. The mechanical properties were also evaluated. Color measurement and comparison were done using a colorimeter (lightness (L*), green-red color (a*), and blue-yellow color (b*)), and the changes were calculated by CIEDE2000 (ΔE<sub>00</sub>), translucency parameter (TP) and whiteness index (WI<sub>D</sub>). The composition color analysis results were then applied to produce a color-graded temporary veneer for mimicking a natural look.</p></div><div><h3>Result</h3><p>Mechanically, all composition result in adequate bending strength with maximum achievable strength of 111.64 MPa. At the same time, the composite color was affected by each constituent differently. 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Composition control of additively manufactured color-graded temporary veneer
Objective
The aim of this study was to design and assess composite resin composition for patient-specific esthetic color-graded temporary veneer.
Methods
Various compositions of composite structures (assorted by Ba2SiO4 filler, TiO2 pigment, and photoinitiator) were prepared via additive manufacturing with 3 s UV exposure (405 nm, 10 W/cm2) per 50 µm thick layer followed by 20 min post-curing treatment after fabrication. The effect of each component on the generated color shades was observed and compared to the commonly used VITA shade guide. The coloration was explored by staining aging treatment under dry, wet, artificial saliva environments, coffee, and cola. The mechanical properties were also evaluated. Color measurement and comparison were done using a colorimeter (lightness (L*), green-red color (a*), and blue-yellow color (b*)), and the changes were calculated by CIEDE2000 (ΔE00), translucency parameter (TP) and whiteness index (WID). The composition color analysis results were then applied to produce a color-graded temporary veneer for mimicking a natural look.
Result
Mechanically, all composition result in adequate bending strength with maximum achievable strength of 111.64 MPa. At the same time, the composite color was affected by each constituent differently. The L* value, which indicates the color lightness of the composite, was considerably tuned by the TiO2 pigment, whereas Ba2SiO4 filler only triggered minor changes. Photoinitiator concentration significantly affected the yellowness, indicated by the increased b* value. Similar tendency also observed toward the calculated TP and WID as well. Based on these evaluations, color-graded temporary veneer successfully generated, matching the VITA A3, A2, and B1 shades gradation. However, the stability of the composite color decreased at high amounts of Ba2SiO4 and photoinitiator.
Significance
The study presents a composition guide for fabricating temporary patient-specific color-graded veneer. It provides insights on the effect of the constituent material on dental esthetics.
期刊介绍：
Dental Materials publishes original research, review articles, and short communications.
Academy of Dental Materials members click here to register for free access to Dental Materials online.
The principal aim of Dental Materials is to promote rapid communication of scientific information between academia, industry, and the dental practitioner. Original Manuscripts on clinical and laboratory research of basic and applied character which focus on the properties or performance of dental materials or the reaction of host tissues to materials are given priority publication. Other acceptable topics include application technology in clinical dentistry and dental laboratory technology.
Comprehensive reviews and editorial commentaries on pertinent subjects will be considered.
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