Methods: Materials used were RelyX Luting Plus Automix cement (RLP-AMX, 3M ESPE), RelyX Luting Plus cement (RLP-HMX, 3M ESPE), RelyX Luting cement (RLC, 3M ESPE), and Fuji Plus Capsule (FP, GC). Fluoride release from three cured discs (20 x 1 mm) of each product in 37C deionized water was measured after 1, 7, 14, 28, 90, 365 days using fluoride selective electrode and TISAB buffer solution.
Results: The mean values for cumulative fluoride release, including the standard deviations, are summarized in the following table:
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Cumulative Fluoride Release after Days (micro g F/g sample) |
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Material |
Delivery System |
Format |
Chemistry |
1 |
7 |
14 |
28 |
90 |
365 |
RLP-AMX |
Automix |
Paste/Paste |
RMGI |
620±18 |
1390±31 |
1949±50 |
2655±74 |
3802±101 |
6112±113 |
RLP-HMX |
Handmix |
Paste/Paste |
RMGI |
660±12 |
1467±17 |
2025±20 |
2730±20 |
3952±29 |
6442±50 |
RLC |
Handmix |
Powder/ Liquid |
RMGI |
599±18 |
1435±48 |
2010±55 |
2733±59 |
3999±65 |
6541±90 |
FP |
Triturated capsule |
Powder/ Liquid |
RMGI |
251±10 |
524±23 |
726±26 |
985±35 |
1497±50 |
2920±93 |
Conclusions: ANOVA analysis was performed at p < 0.05 per Tukey’s pair wise comparison test. The RLP-AMX released comparable amounts of fluoride compared to RLP or RLC and all significantly released higher fluoride than FP. All resin-modified glass-ionomer cements exhibited sustained fluoride release over 1 year.
Keywords: Cements, Fluoride, Glass ionomers and RMGI Luting
See more of: Dental Materials 3: Ceramic-based Materials and Cements