Restorative Dentistry & Endodontics

Research Articles

Discoloration of various CAD/CAM blocks after immersion in coffee: Sasipin Lauvahutanon, Maho Shiozawa, Hidekazu Takahashi, Naohiko Iwasaki, Meiko Oki, Werner J. Finger, Mansuang Arksornnukit; Restor Dent Endod 2017;42(1):9-18. Published online December 8, 2016; DOI: https://doi.org/10.5395/rde.2017.42.1.9

Objectives

This study evaluated color differences (ΔEs) and translucency parameter changes (ΔTPs) of various computer-aided design/computer-aided manufacturing (CAD/CAM) blocks after immersion in coffee.

Materials and Methods

Eight CAD/CAM blocks and four restorative composite resins were evaluated. The CIE L^*a^*b^* values of 2.0 mm thick disk-shaped specimens were measured using the spectrophotometer on white and black backgrounds (n = 6). The ΔEs and ΔTPs of one day, one week, and one month immersion in coffee or water were calculated. The values of each material were analyzed by two-way ANOVA and Tukey's multiple comparisons (α = 0.05). The ΔEs after prophylaxis paste polishing of 1 month coffee immersion specimens, water sorption and solubility were also evaluated.

Results

After one month in coffee, ΔEs of CAD/CAM composite resin blocks and restorative composites ranged from 1.6 to 3.7 and from 2.1 to 7.9, respectively, and ΔTPs decreased. The ANOVA of ΔEs and ΔTPs revealed significant differences in two main factors, immersion periods and media, and their interaction except for ΔEs of TEL (Telio CAD, Ivoclar Vivadent). The ΔEs significantly decreased after prophylaxis polishing except GRA (Gradia Block, GC). There was no significant correlation between ΔEs and water sorption or solubility in water.

Conclusions

The ΔEs of CAD/CAM blocks after immersion in coffee varied among products and were comparable to those of restorative composite resins. The discoloration of CAD/CAM composite resin blocks could be effectively removed with prophylaxis paste polishing, while that of some restorative composites could not be removed.

Citations

Citations to this article as recorded by

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Bohyun Lim, Dohyun Kim, Je Seon Song, Sunil Kim, Hoon Kim, Yooseok Shin
Dentistry Journal.2024; 12(3): 68. CrossRef
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Luiz Felipe Schneider, Bruna Mueller, Rubens Nisie Tango, Claudia Angela Maziero Volpato
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Imena Rexhepi, Manlio Santilli, Gianmaria D’Addazio, Giuseppe Tafuri, Eugenio Manciocchi, Sergio Caputi, Bruna Sinjari
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Ioannis Papathanasiou, Spiros Zinelis, George Papavasiliou, Phophi Kamposiora
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Selcuk Dental Journal.2023; 10(3): 526. CrossRef
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Mechanical degradation of contemporary CAD/CAM resin composite materials after water ageing
Michael Wendler, Anja Stenger, Julian Ripper, Eva Priewich, Renan Belli, Ulrich Lohbauer
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Soner ŞİŞMANOĞLU, Aliye Tuğçe GÜRCAN
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Color stability and surface roughness of resin based direct and indirect restorative materials
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Impact of storage media and temperature on color stability of tooth-colored CAD/CAM materials for final restorations
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Marginal and internal fit of nano-composite CAD/CAM restorations: So-Hyun Park, Yeon-Jee Yoo, Yoo-Jin Shin, Byeong-Hoon Cho, Seung-Ho Baek; Restor Dent Endod 2016;41(1):37-43. Published online January 19, 2016; DOI: https://doi.org/10.5395/rde.2016.41.1.37

Abstract PDF PubReader ePub

Objectives

The purpose of this study was to compare the marginal and internal fit of nano-composite CAD-CAM restorations.

Materials and Methods

A full veneer crown and an mesio-occluso-distal (MOD) inlay cavity, which were prepared on extracted human molars, were used as templates of epoxy resin replicas. The prepared teeth were scanned and CAD-CAM restorations were milled using Lava Ultimate (LU) and experimental nano-composite CAD/CAM blocks (EB) under the same milling parameters. To assess the marginal and internal fit, the restorations were cemented to replicas and were embedded in an acrylic mold for sectioning at 0.5 mm intervals. The measured gap data were pooled according to the block types and measuring points for statistical analysis.

Results

Both the block type and measuring point significantly affected gap values, and their interaction was significant (p = 0.000). In crowns and inlays made from the two blocks, gap values were significantly larger in the occlusal area than in the axial area, while gap values in the marginal area were smallest (p < 0.001). Among the blocks, the restorations milled from EB had a significantly larger gap at all measuring points than those milled from LU (p = 0.000).

Conclusions

The marginal and internal gaps of the two nano-composite CAD/CAM blocks differed according to the measuring points. Among the internal area of the two nano-composite CAD/CAM restorations, occlusal gap data were significantly larger than axial gap data. The EB crowns and inlays had significantly larger gaps than LU restorations.

Citations

Citations to this article as recorded by

Dimensional accuracy of additive and subtractive manufactured ceramic-reinforced hybrid composite inlays: a CBCT-based in vitro study
Arwa Daghrery, Thilla Sekar Vinothkumar, Hissah Majrashi, Ghadah Faqihi, Rahaf Gofshi, Shroog Almasoudi, Rehaf Madkhali, Walter Yu Hang Lam, Honey Lunkad, Hemant Chourasia, Akhilanand Chaurasia
Scientific Reports.2025;[Epub] CrossRef
The Influence of Extra-Fine Milling Protocol on the Internal Fit of CAD/CAM Composite and Ceramic Crowns
João Paulo Mendes Tribst, Fatema Hosseini, Rafaela Oliveira Pilecco, Carlos Manuel Serrano, Cornelis Johannes Kleverlaan, Amanda Maria de Oliveira Dal Piva
Materials.2024; 17(22): 5601. CrossRef
Marginal fit of three different nanocomposite inlays fabricated with computer-aided design/computer-aided manufacturing (CAD/CAM) technology: a comparative study
Hyunsuk Choi, Jae-Young Jo, Min-Ho Hong
Journal of Yeungnam Medical Science.2024; 41(2): 80. CrossRef
Clinical comparison of marginal fit of ceramic inlays between digital and conventional impressions
Franklin Guillermo Vargas-Corral, Américo Ernesto Vargas-Corral, Miguel Angel Rodríguez-Valverde, Manuel Bravo, Juan Ignacio Rosales-Leal
The Journal of Advanced Prosthodontics.2024; 16(1): 57. CrossRef
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Yoen Ah Lim, Jeong Mi Kim, Yoorina Choi, Sujung Park
European Journal of Dentistry.2023; 17(04): 1029. CrossRef
Microscopic Inspection of the Adhesive Interface of Composite Onlays after Cementation on Low Loading: An In Vitro Study
Tiago Magalhães, Rita Fidalgo-Pereira, Orlanda Torres, Óscar Carvalho, Filipe S. Silva, Bruno Henriques, Mutlu Özcan, Júlio C. M. Souza
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Triple scan evaluation of internal and marginal adaptation of overlays using different restorative materials
Cynthia Kassis, Carina Mehanna, Pierre Khoury, Hani Tohme, Carlos Enrique Cuevas‐Suárez, Rim Bourgi, Monika Lukomska‐Szymanska, Louis Hardan
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Marginal and internal fit and fracture resistance of three‐unit provisional restorations fabricated by additive, subtractive, and conventional methods
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Yubo Wang, Junfu Li, Daiyun Chen, Li Li, Tao Huang
Computational and Mathematical Methods in Medicine.2021; 2021: 1. CrossRef
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Ayşe Aslı ŞENOL, Pınar YILMAZ ATALI, Erkut KAHRAMANOĞLU
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Merve BENLİ, Bilge GÖKÇEN-ROHLİG
Atatürk Üniversitesi Diş Hekimliği Fakültesi Dergisi.2020;[Epub] CrossRef
BİLGİSAYAR DESTEKLİ TASARIM-BİLGİSAYAR DESTEKLİ ÜRETİM SİSTEMLERİNİN FARKLI DENTAL RESTORASYONLARIN KENAR VE İÇ YÜZEY UYUMLARINA ETKİSİNİN DEĞERLENDİRİLMESİ: İN-VİTRO ÇALIŞMA
Merve BENLİ, Bilge GÖKÇEN-ROHLİG
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