PMID- 37438935
OWN - NLM
STAT- MEDLINE
DCOM- 20231025
LR  - 20240228
IS  - 2057-4347 (Electronic)
IS  - 2057-4347 (Linking)
VI  - 9
IP  - 5
DP  - 2023 Oct
TI  - Effect of denture cleansers on color stability and surface roughness of denture 
      bases fabricated from three different techniques: Conventional heat-polymerizing, 
      CAD/CAM additive, and CAD/CAM subtractive manufacturing.
PG  - 840-850
LID - 10.1002/cre2.763 [doi]
AB  - PURPOSE: Denture base materials are commonly exposed to different denture 
      cleansers which can affect their essential properties. This study aimed to assess 
      the effect of denture cleansers on color stability and surface roughness of poly 
      methyl methacrylate (PMMA) denture bases fabricated from different techniques: 
      Conventional heat-polymerizing, CAD/CAM additive and CAD/CAM subtractive. 
      MATERIALS AND METHODS: In this in vitro study, 24 disc-shaped specimens were 
      fabricated by the mentioned methods for each group. The initial color and surface 
      roughness of specimens were recorded. The specimens were randomly divided into 
      three subgroups (n = 8): a control subgroup (distilled water), and two 
      experimental subgroups of bioactive oxygen tablet (Corega) and 1% sodium 
      hypochlorite solution. Then they were immersed in the solutions simulating 180 
      days of clinical use. Color change (∆E) was measured by a spectrophotometer 
      according to the CIE L*a*b* color space and the American National Bureau of 
      Standards (NBS = 0.92 x ∆E). Final surface roughness was recorded by a 
      profilometer and its change was calculated. The Kruskal-Wallis test followed by 
      the Wilcoxon signed rank test were used for statistical analyses (alpha = .05). 
      RESULTS: The conventional and CAD/CAM subtractive groups showed an increase in 
      surface roughness following immersion in hypochlorite solution (p < .05). After 
      immersion in the solutions, the highest surface roughness was noted in the 
      conventional group, and the lowest in the CAD/CAM additive group. The CAD/CAM 
      additive group experienced a significant color change in hypochlorite solution 
      (p < .05) and showed the highest color change while the CAD/CAM subtractive group 
      showed the lowest color change in all denture cleanser solutions. CONCLUSION: 
      Although the CAD/CAM additive denture base resins had the lowest surface 
      roughness after exposure to denture cleanser solutions, they showed significant 
      color change, which should be taken into account. Using hypochlorite as a denture 
      cleanser should be cautioned due to its negative effects on the surface roughness 
      and color stability of denture base materials.
CI  - (c) 2023 The Authors. Clinical and Experimental Dental Research published by John 
      Wiley & Sons Ltd.
FAU - Takhtdar, Mehrab
AU  - Takhtdar M
AD  - Department of Prosthodontics, School of Dentistry, Shiraz University of Medical 
      Sciences, Shiraz, Iran.
FAU - Azizimoghadam, Nahid
AU  - Azizimoghadam N
AD  - Department of Prosthodontics, School of Dentistry, Shiraz University of Medical 
      Sciences, Shiraz, Iran.
FAU - Kalantari, Mohammad Hasan
AU  - Kalantari MH
AD  - Department of Prosthodontics, School of Dentistry, Shiraz University of Medical 
      Sciences, Shiraz, Iran.
FAU - Mohaghegh, Mina
AU  - Mohaghegh M
AUID- ORCID: 0000-0002-8751-5255
AD  - Department of Prosthodontics, School of Dentistry, Shiraz University of Medical 
      Sciences, Shiraz, Iran.
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20230712
PL  - United States
TA  - Clin Exp Dent Res
JT  - Clinical and experimental dental research
JID - 101692332
RN  - 0 (Denture Cleansers)
RN  - 712K4CDC10 (Hypochlorous Acid)
SB  - IM
MH  - *Denture Bases
MH  - *Denture Cleansers
MH  - Hot Temperature
MH  - Hypochlorous Acid
MH  - Materials Testing
MH  - Surface Properties
PMC - PMC10582232
OTO - NOTNLM
OT  - CAD/CAM denture base materials
OT  - color stability
OT  - denture cleansers
OT  - surface roughness
COIS- The authors declare no conflicts of interest.
EDAT- 2023/07/13 06:42
MHDA- 2023/10/23 00:44
PMCR- 2023/07/12
CRDT- 2023/07/13 01:13
PHST- 2023/06/28 00:00 [revised]
PHST- 2023/05/08 00:00 [received]
PHST- 2023/06/30 00:00 [accepted]
PHST- 2023/10/23 00:44 [medline]
PHST- 2023/07/13 06:42 [pubmed]
PHST- 2023/07/13 01:13 [entrez]
PHST- 2023/07/12 00:00 [pmc-release]
AID - CRE2763 [pii]
AID - 10.1002/cre2.763 [doi]
PST - ppublish
SO  - Clin Exp Dent Res. 2023 Oct;9(5):840-850. doi: 10.1002/cre2.763. Epub 2023 Jul 
      12.