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Resin Cement Residue Removal Techniques: In Vitro Analysis of Marginal Defects and Discoloration Intensity Using Micro-CT and Stereomicroscopy
Riga Stradins Univ, Fac Dent, Dept Prosthet Dent, LV-1007 Riga, Latvia..
Malmö universitet, Odontologiska fakulteten (OD).ORCID-id: 0000-0001-6260-473X
Riga Tech Univ, Fac Mat Sci & Appl Chem, Rudolfs Cimdins Riga Biomat Innovat & Dev Ctr, Inst Gen Chem Engn, LV-1007 Riga, Latvia..
Riga Tech Univ, Fac Mat Sci & Appl Chem, Rudolfs Cimdins Riga Biomat Innovat & Dev Ctr, Inst Gen Chem Engn, LV-1007 Riga, Latvia..ORCID-id: 0000-0003-3162-7431
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2022 (engelsk)Inngår i: DENTISTRY JOURNAL, ISSN 2304-6767, Vol. 10, nr 4, artikkel-id 55Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

The objective was to compare marginal defects and evaluate discoloration for adhesively cemented veneers in vitro when using two cement removal techniques. Twenty premolars were prepared with chamfer and borders in enamel. IPS e.max CAD veneers were cemented using Panavia V5 and divided in two groups (n = 10): cement excess removed with a probe after tack-curing for 3-5 s, or cement excess removed with a brush, then completely polymerized. All teeth were stored in alginate gel until micro-CT examination. Scanning was performed twice: directly after cementation and after thermocycling (5000 cycles, between 5 and 55 degrees C). To analyze discoloration, teeth were colored using 0.5% basic fuchsine and examined under a stereomicroscope. Depth of dye infiltration was scored 0 (no discoloration) to 5 (discoloration along the entire margin). Statistically significant differences of cement defects before thermocycling were reported, where brushing showed more defects than probing (p = 0.0161). After thermocycling, the defects increased for both groups. Extensive discoloration was the most common (55.56%) when removing excess by probing; by brushing, 90% of the specimens exhibited slight discoloration (p = 0.008). Regression analysis showed no relationship between type of defect and degree of discoloration. Removing cement with a brush causes more marginal defects, however less discoloration after thermocycling.

sted, utgiver, år, opplag, sider
MDPI, 2022. Vol. 10, nr 4, artikkel-id 55
Emneord [en]
adhesive cementation, discoloration, marginal defect, dental veneers
HSV kategori
Identifikatorer
URN: urn:nbn:se:mau:diva-51749DOI: 10.3390/dj10040055ISI: 000786792100001PubMedID: 35448050Scopus ID: 2-s2.0-85128374582OAI: oai:DiVA.org:mau-51749DiVA, id: diva2:1661978
Tilgjengelig fra: 2022-05-30 Laget: 2022-05-30 Sist oppdatert: 2024-02-05bibliografisk kontrollert

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