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Published on: July 21, 2014
Impact of Extrinsic Staining on the Physical Properties of Provisional Resins Fabricated by Digital and Conventional
Purpose:
To evaluate, in situ, the color stability of a 3D-printed resin (PR), milled resin (MR), and bis-acryl resin (BR) after exposure to coffee and cigarette smoke.
Materials And Methods:
The 12 participants per group (control, coffee consumers, and smokers) used intraoral devices containing the specimen resins. A total of 72 samples of each resin were prepared, and initial surface roughness and color readings were recorded. Participants wore the device, containing two samples of each resin, for 15 days, brushing three times per day. Final color and surface roughness measurements were obtained. Water sorption (SP) and water solubility (SL) analyses were conducted (n = 20). Data were analyzed using ANOVA and Tukey tests (α = .05).
Results:
BR had the highest alterations in surface roughness under control conditions and after cigarette smoke exposure (P < .05). PR showed the highest surface roughness and MR the lowest alteration after coffee consumption (P < .05). After coffee consumption, BR exhibited higher color change than PR (P < .05), and following cigarette smoke exposure, BR showed the highest alteration (P < .05), while MR had the lowest (P < .05). Cigarette smoke caused the highest color change across all resins. BR exhibited the highest SP and SL (P < .05).
Conclusions:
PR and MR demonstrated better color stability and less alteration in surface roughness change compared to BR.
