Back to Search
Start Over
The Effect of Different Immersion Media, Polymerization Modes, and Brushing on the Color Stability of Different Composite Resin.
- Source :
- International Journal of Periodontics & Restorative Dentistry; Mar/Apr2023, Vol. 43 Issue 2, p247-255, 9p
- Publication Year :
- 2023
-
Abstract
- This in vitro study investigated color stability of two photo-polymerized nano-filled and nano-hybrid composite resins in different polymerization modes immersed in different staining solutions before and after brushing. Disc-shaped specimens (n = 120) were prepared from two composite resins based on filler particle size: nano-filled (Filtek Z350, shade A1, 3M ESPE) and nano-hybrid (Spectra ST-HV, shade A1, Dentsply Sirona) composite resins (n = 60 per composite type). Specimens of each resin type were photopolymerized using the following polymerization modes: LED conventional, ramp, and pulse (n = 20 specimens per resin type and LED mode). After preparation, baseline color of the specimens was evaluated using a spectrophotometer (Easyshade V, VITA), and color change was evaluated using the CIE L*a*b* formula. Specimens were soaked in distilled water for 4 weeks in separate containers. The specimens from each polymerization-mode group were separated into two groups of 10 specimens; one group was stored in tea and the other group was stored in cola, each 1 hour daily for 4 weeks. After 4 weeks, the color was measured again. The specimens were brushed for 2 minutes under 200-g weight using an electronically powered toothbrush on the polymerized side of the specimen. The color was reevaluated immediately after brushing. Color-difference data (ΔE) between groups were analyzed by one-way analysis of variance for main comparison and by independent t test for color change after brushing. Nano-filled composite resin was more color-stable than nano-hybrid composite resin (P < .001), regardless of the staining media. For both composite resin types, the conventional polymerization method produced a more color-stable result (P < .0001). ΔE after brushing was reduced significantly (P < .0001). Both staining solutions have significant effects on color change, with tea staining more than cola (P < .0001). Nanofilled composite resin had greater color stability than nano-hybrid composite resin after immersion in staining solutions. Polymerization mode influences the color stability of both composite resin types. [ABSTRACT FROM AUTHOR]
- Subjects :
- DENTAL resins
IMMERSION in liquids
DENTIN
SPECTROPHOTOMETERS
STAINS & staining (Microscopy)
TOOTH care & hygiene
SCANNING electron microscopy
ONE-way analysis of variance
EXCIPIENTS
T-test (Statistics)
CHEMICAL processes
TEETH polishing
NANOTECHNOLOGY
PARTICLES
DESCRIPTIVE statistics
COLORIMETRY
SURFACE properties
DATA analysis software
DENTAL cements
Subjects
Details
- Language :
- English
- ISSN :
- 01987569
- Volume :
- 43
- Issue :
- 2
- Database :
- Complementary Index
- Journal :
- International Journal of Periodontics & Restorative Dentistry
- Publication Type :
- Academic Journal
- Accession number :
- 162818250
- Full Text :
- https://doi.org/10.11607/prd.6427