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논문 기본 정보

자료유형
학술저널
저자정보
Tran Clayton (Division of General Dentistry Loma Linda University School of Dentistry Loma Linda California USA.) Choi Ellin (Division of General Dentistry Loma Linda University School of Dentistry Loma Linda California USA.) Watu Brittany (Division of General Dentistry Loma Linda University School of Dentistry Loma Linda California USA.) Oyoyo Udochukwu (Division of General Dentistry Loma Linda University School of Dentistry Loma Linda California USA.) Perry Christopher (Department of Biochemistry Loma Linda University School of Medicine Loma Linda California USA.) Kwon So Ran (Division of General Dentistry Loma Linda University School of Dentistry Loma Linda California USA.)
저널정보
대한치과보존학회 Restorative Dentistry and Endodontics Restorative Dentistry and Endodontics 제46권 제4호
발행연도
2021.11
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1 - 9 (9page)
DOI
10.5395/rde.2021.46.e47

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Objectives: This study aimed to use a laboratory model to evaluate the efficacy of an experimental bleaching agent. Materials and Methods: The model used human extracted molars that were treated and measured for bleaching efficacy. Teeth (n = 50) were distributed into 5 groups: Negative control (NC): immersion in water for 8 hours; Nanofibers (NFs): Experimental titanium dioxide nanofibers with stirring and light activation for 8 hours; Whitestrips (WS): Crest 3D White Glamorous White Whitestrips, 2 applications daily for 30 minutes, 14 days; 1% hydrogen peroxide (HP) standard: 1% hydrogen peroxide for 8 hours; and 30% HP standard: 30% hydrogen peroxide for 8 hours. Instrumental measurements were performed using a spectrophotometer. Results were recorded at baseline, 1-day post-bleaching, and 1-week post-bleaching. Kruskal-Wallis procedure was used to determine differences in color change. Pearson correlation was used to evaluate the relationship between visual and instrumental measurements. Tests of hypotheses were 2-sided with alpha = 0.05. Results: There was no significant difference in color parameters (L1, a1, b1, and shade guide units [SGU]) at baseline (p > 0.05). There was a significant difference among the groups for overall color change (ΔE*ab) and change in shade guide units (ΔSGU) at 1-day and 1-week post-bleaching (p < 0.05). The higher the HP concentration, the higher the color change as expressed in ΔSGU and ΔE*ab. The negative control exceeded the perceptibility threshold of ΔE* = 1.2 regardless of time point. NFs showed a decrease in chroma, but were not statistically different compared to the negative control. Conclusions: The laboratory model was successful in screening an experimental bleaching agent.
#Color #Experimental model #Titanium dioxide #Tooth bleaching

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참고문헌 (26)

참고문헌 신청
Lazarchik DA / 2010 / Use of tray-applied 10 percent carbamide peroxide gels for improving oral health in patients with special-care needs / J Am Dent Assoc 141:639~646 google schola Kwon SR / 2015 / Review of the mechanism of tooth whitening / J Esthet Restor Dent 27:240~257 google schola Vaz MM / 2016 / Inflammatory response of human dental pulp to at-home and in-office tooth bleaching / J Appl Oral Sci 24:509~517 google schola Silva-Costa RSGD / 2018 / In-office tooth bleaching with 38% hydrogen peroxide promotes moderate/severe pulp inflammation and production of ll-1β, TNF-β, GPX, FGF-2 and osteocalcin in rats / J Appl Oral Sci 26:e20170367 google schola Munro IC / 2006 / Tooth whitening products and the risk of oral cancer / Food Chem Toxicol 44:301~315 google schola

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