Optical properties and colorimetric evaluation of resin cements formulated with thio-urethane oligomers.
colorimetric evaluation
optical properties
resin cements
thio-urethane oligomers
Journal
Journal of esthetic and restorative dentistry : official publication of the American Academy of Esthetic Dentistry ... [et al.]
ISSN: 1708-8240
Titre abrégé: J Esthet Restor Dent
Pays: England
ID NLM: 101096515
Informations de publication
Date de publication:
03 2019
03 2019
Historique:
received:
09
05
2018
revised:
07
09
2018
accepted:
25
09
2018
pubmed:
6
11
2018
medline:
24
12
2019
entrez:
6
11
2018
Statut:
ppublish
Résumé
The aim of this study was to evaluate the color parameters and optical properties of resin cements (RCs) formulated with thio-urethanes (TUs). Six TUs were synthesized by combining thiols (pentaerythritol tetra-3-mercaptopropionate [PETMP] or trimethylol-tris-3-mercaptopropionate [TMP]) with di-functional isocyanates (1,6-Hexanediol-diissocyante [HDDI] [aliphatic-AL] or 1,3-bis(1-isocyanato-1-methylethyl) benzene [BDI] [aromatic-AR] or Dicyclohexylmethane 4,4'-Diisocyanate [HMDI] [cyclic-CC]). TUs (20 wt%) were added to a BisGMA/UDMA/TEGDMA matrix. Filler was introduced at 60 wt%. Fluorescence was evaluated through an UV-light emitting equipment. Coordinates L*, a*, and b* were obtained in the black and white reflectance to evaluate the contrast ratio (CR) and translucency parameter (TP RCs formulated with TUs presented significantly higher CR, and fluorescence (with T_AR). Significantly lower C*, L*, and TP RCs composed by TU oligomers present higher CR and lower translucency. The material also present higher fluorescence depending on the oligomer used. The use of thio-urethanes to formulate resin cements can ensure a luting material with improved potential to mask colored substrates due to the higher contrast ratio and lower translucency obtained. A final higher fluorescence of restoration is also expected with the use of specific oligomer.
Identifiants
pubmed: 30394660
doi: 10.1111/jerd.12437
pmc: PMC6443420
mid: NIHMS993405
doi:
Substances chimiques
Composite Resins
0
Resin Cements
0
Urethane
3IN71E75Z5
Types de publication
Journal Article
Research Support, N.I.H., Extramural
Research Support, Non-U.S. Gov't
Langues
eng
Pagination
153-159Subventions
Organisme : NIH-NIDCR
ID : 1U01-DE02756-01
Pays : International
Organisme : NIDCR NIH HHS
ID : K02 DE025280
Pays : United States
Organisme : NIH-NIDCR
ID : 1R15-DE023211-01A1
Pays : International
Organisme : NIDCR NIH HHS
ID : U01 DE023756
Pays : United States
Organisme : NIDCR NIH HHS
ID : R15 DE023211
Pays : United States
Organisme : FAPESP
ID : 2017-11913-8
Pays : International
Informations de copyright
© 2018 Wiley Periodicals, Inc.
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