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Calazans FS, Ferreira TDMJ, Ñaupari-Villasante R, Mendonça RP, Ornellas G, Albuquerque EG, Tardem C, de Miranda MS, Barceleiro MO, Loguercio AD. Influence of surface sealants on the quality of posterior restorations with bulk-fill composites: A 4-year randomized clinical trial. Dent Mater 2024; 40:466-476. [PMID: 38142146 DOI: 10.1016/j.dental.2023.12.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Revised: 12/09/2023] [Accepted: 12/11/2023] [Indexed: 12/25/2023]
Abstract
OBJECTIVES The aim of this study was to evaluate the clinical performance of surface sealants associated with a bulk-fill composite in posterior restorations after 4 years. METHODS A total of 174 posterior restorations were performed on 57 participants using a self-etch adhesive system and a bulk-fill composite. The groups were then divided into the following categories: 1) without surface sealant (NoS), 2) with surface sealant Biscover (Bisco, SBi), and 3) with surface sealant Permaseal (Ultradent, SPe). Restorations were evaluated using FDI criteria at baseline and after 1 and 4 years. Statistical analysis was conducted using Kaplan-Meier survival analysis and the Chi-square test (α = 0.05). RESULTS After 4 years, only one restoration was lost (1 in the NoS group). The fracture/retention rate (with 95% confidence interval) was 98% for NoS and 100% for both SBi and SPe (p = 0.76). The majority of secondary outcomes showed minor defects, with no significant differences among the groups (p > 0.05). However, significant differences were observed among the groups in terms of marginal staining and marginal adaptation (p = 0.03). In both items, twelve restorations (nine in NoS, one in SBi, and two in SPe) showed minor marginal discrepancies favoring the sealant groups (SBi and SPe). SIGNIFICANCE Regardless of the use of surface sealants, the bulk-fill composite restorations showed excellent clinical performance after 4 years. However, the groups that received sealants showed better marginal adaptation and less marginal discoloration compared to those that did not receive sealants.
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Affiliation(s)
- Fernanda Signorelli Calazans
- Department of Restorative Dentistry, School of Dentistry, Fluminense Federal University, Nova Friburgo, RJ, Brazil
| | | | - Romina Ñaupari-Villasante
- Department of Restorative Dentistry, School of Dentistry, Ponta Grossa State University, Ponta Grossa, PR, Brazil
| | - Rafael Pinto Mendonça
- Department of Restorative Dentistry, Institute of Science and Technology of São José dos Campos, São Paulo State University (UNESP), São José dos Campos, SP, Brazil
| | - Giulia Ornellas
- Department of Restorative Dentistry, School of Dentistry, Fluminense Federal University, Nova Friburgo, RJ, Brazil
| | - Elisa Gomes Albuquerque
- Operative Dentistry Department, School of Dentistry, Juiz de Fora Federal University, Juiz de Fora, MG, Brazil
| | - Chane Tardem
- Department of Restorative Dentistry, School of Dentistry, Fluminense Federal University, Nova Friburgo, RJ, Brazil
| | - Mauro Sayao de Miranda
- Restorative Dentistry Department, Rio de Janeiro State University, Rio de Janeiro, RJ, Brazil
| | - Marcos O Barceleiro
- Department of Restorative Dentistry, School of Dentistry, Fluminense Federal University, Nova Friburgo, RJ, Brazil.
| | - Alessandro D Loguercio
- Department of Restorative Dentistry, School of Dentistry, Ponta Grossa State University, Ponta Grossa, PR, Brazil
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Deng C, Xue R, Wang J, Cheng M, Zhu G, Zhang K, Lu T, Mao C. Discrimination between Zingiberis Rhizoma Praeparatum and carbonised ginger by colour measurement and fingerprint analysis. PHYTOCHEMICAL ANALYSIS : PCA 2021; 32:921-931. [PMID: 33594765 DOI: 10.1002/pca.3035] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Revised: 01/27/2021] [Accepted: 01/28/2021] [Indexed: 06/12/2023]
Abstract
INTRODUCTION Zingiberis Rhizoma (ZR) has been used as a traditional Chinese herb and culinary food for thousands of years. Its two processed products, Zingiberis Rhizoma Praeparatum (ZRP) and carbonised ginger (CG), possess different therapeutic effects. OBJECTIVES To establish an objective and comprehensive method to differentiate ZRP from CG and to evaluate their qualities. METHODOLOGY Colour values of ZRP and CG were tested to establish the colour models by spectrophotometry. Moreover, high-performance liquid chromatography (HPLC) was developed for fingerprint and quantitative analysis, and chemometric approaches were applied to discriminate between ZRP and CG. Finally, Spearman's correlation analysis was performed to investigate the relationship between the colour values and the peak areas of the common chemical compositions. RESULTS Colour reference ranges of colour parameters and mathematical functions were built to distinguish ZRP from CG. In fingerprint analysis, 26 common peaks were detected in these two processed products, among which 6-gingerol, 8-gingerol, 6-shogaol, 10-gingerol, 8-shogaol and 10-shogaol were identified. Meanwhile, ZRP could be differentiated from CG by chemometrics analysis. In addition, the correlation between colour parameters and common peak areas was found and the contents of 6-gingerol, 8-gingerol, 6-shogaol, 10-gingerol, and 8-shogaol were determined simultaneously. CONCLUSIONS An objective approach of colour measurement, HPLC fingerprint coupled with chemometrics analysis and quantitative assessment could be applied to discriminate ZRP from CG and evaluate the qualities of ZRP and CG rapidly.
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Affiliation(s)
- Chang Deng
- College of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China
| | - Rong Xue
- College of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China
| | - Jing Wang
- College of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China
| | - Ming Cheng
- College of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China
| | - Guangfei Zhu
- College of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China
| | - Kewei Zhang
- College of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China
| | - Tulin Lu
- College of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China
| | - Chunqin Mao
- College of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China
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Yıldırım S, Kaya E. Can the use of surface sealant on restorative materials prevent discoloration related to iron syrup supplements? Eur Arch Paediatr Dent 2021; 22:739-750. [PMID: 33713021 DOI: 10.1007/s40368-021-00614-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2020] [Accepted: 02/27/2021] [Indexed: 10/21/2022]
Abstract
PURPOSE The purpose of this study was to evaluate the impact of surface sealants on the stain resistance of restorative materials exposed to iron syrups. METHODS Sixty specimens were prepared from each of three restorative materials-compomer (Dyract XP), a microhybrid composite (Filtek Z250), and a nanohybrid composite (G-aenial Anterior). Specimens were divided into three solution groups (n = 20) and immersed in two iron syrups (Ferrum and Ferro Sanol B) and distilled water. Two subgroups, sealed (BisCover ( +)) and unsealed (BisCover (-)), were established for each group (n = 10). Color changes between baseline and measurements at 4, 8, 24, 48, and 72 h were calculated with CIEDE2000 (ΔE00) metrics. Data were analyzed with 4-factor mixed-design ANOVA. RESULTS The first null hypothesis of this study that the use of surface sealant would not mitigate the restorative materials' susceptibility to staining was rejected: significant differences were found between BisCover ( +) and BisCover (-) groups in ΔE00 values for all restorative materials tested in Ferro Sanol B (p < 0.001) and Ferrum (p = 0.002) solutions. The ΔE00 values in the Ferro Sanol B/BisCover ( +) groups were significantly lower than in Ferrum/BisCover ( +) groups (p = 0.002), the second null hypothesis that different forms of iron syrups would not impact the staining resistance of restorative materials was rejected. ΔE00 values were different for each restorative materials tested, the third null hypothesis that the type of restorative material would not affect staining resistance was rejected. CONCLUSIONS The application of surface sealant significantly improved the color stability of restorative materials. The content of iron syrups was also an important factor affecting color change. Nanohybrid composites seem to be more resistant to the staining effects of iron syrups.
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Affiliation(s)
- S Yıldırım
- Department of Pediatric Dentistry, Faculty of Dentistry, Istanbul Okan University, Istanbul, Turkey.
| | - E Kaya
- Department of Pediatric Dentistry, Faculty of Dentistry, Istanbul Okan University, Istanbul, Turkey
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KERPEL F, BAMBERG AC, NICOLOSO GF, MIOTTI LL, DALMOLIN A, SWAROWSKY LA, MARQUEZAN M, DURAND LB. Effect of different placement techniques on color stability and surface roughness of resin composites. REVISTA DE ODONTOLOGIA DA UNESP 2021. [DOI: 10.1590/1807-2577.00421] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Abstract Introduction Longevity and clinical success of dental restorations can be influenced by many factors during the restorative procedures. Objective This study aimed to evaluate the influence of different placement techniques on color stability and surface roughness of two resin composites. Material and method The groups of specimens (n=10) were divided according to resin composite (FiltekTM Z250 XT and FiltekTM Z350 XT) and placement technique: Mylar strip, spatula, dry brush, modeling liquid, and surface sealant. Color stability and surface roughness were accessed using a spectrophotometer (CIELab color space) and a rugosimeter (standard cutoff of 0.8 mm), respectively, after water storage. Subsequently, the specimens were immersed in coffee for 48 h and final color was measured. The data were analyzed using ANOVA and the Tukey’s post hoc test (α=5%) and the correlation between surface roughness (Ra) and color change (∆Eab) was assessed using the Pearson’s correlation coefficient. Result The different placement techniques influenced Ra and ∆Eab on both resin composites. The groups treated with surface sealant showed greater difference in ∆Eab for both resin composites. The FiltekTM Z250 XT resin showed greater color stability compared with the FiltekTM Z350 XT resin regardless of the placement technique used. Ra of each placement technique was similar among the resin composites except for the FiltekTM Z350 XT modeling liquid group, which presented lower Ra values compared with those of FiltekTM Z250 XT. A correlation between Ra and staining was identified (p=0.268). Conclusion Color stability and Ra are influenced by different placement techniques.
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Xue R, Deng C, Cao H, Zhang K, Lu T, Mao C. Quality assessment of raw and baked Aucklandia lappa Decne. by color measurement and fingerprint analysis. J Sep Sci 2020; 43:3017-3026. [PMID: 32459392 DOI: 10.1002/jssc.202000308] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2020] [Revised: 05/19/2020] [Accepted: 05/21/2020] [Indexed: 12/17/2022]
Abstract
Aucklandia lappa Decne. has been used as a traditional Chinese herb for thousands of years in treating various kinds of disorders. According to the Chinese Pharmacopoeia, there are two kinds of processed products, raw and baked Aucklandia lappa Decne., which have different therapeutic effect in clinical application. In this study, based on color measurement and fingerprint analysis, the method to assess the quality of these two processed products was established. In color measurement, the reference ranges of color parameters (L* , a* , and b* ), standard color difference values, and mathematical prediction functions of these two processed products were obtain after the color was measured by a spectrophotometer. Meanwhile, high-performance liquid chromatography fingerprints of these two processed products were established, where there were 12 peaks recognized as the common peaks in both processed products, in which two peaks were identified as costunolide and dehydrocostus lactone, and these two processed products were classified with chemometrics analysis subsequently. Furthermore, the correlation between color parameters and sample compositions was explored and the contents of costunolide and dehydrocostus lactone were determined simultaneously by high-performance liquid chromatography. Consequently, an integral method including color measurement, high-performance liquid chromatography fingerprint with chemometrics analysis, and quantitative determination was established.
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Affiliation(s)
- Rong Xue
- College of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, P.R. China
| | - Chang Deng
- College of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, P.R. China
| | - Honghong Cao
- College of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, P.R. China
| | - Kewei Zhang
- College of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, P.R. China
| | - Tulin Lu
- College of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, P.R. China
| | - Chunqin Mao
- College of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, P.R. China
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