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RelyX™ Luting and RelyX™ Luting Plus Cement - 3M

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14<br />

Source: <strong>3M</strong> ESPE Laboratory<br />

test data<br />

Source: <strong>3M</strong> ESPE Laboratory<br />

test data<br />

Fluoride Release<br />

One of the key features of a glass ionomer-based cement is their sustained fluoride release. It is<br />

generally believed that the release of fluoride ions <strong>and</strong> uptake into the tooth structure aids in the<br />

reduction of secondary caries 1 , which can be difficult to detect under a crown or bridge. Fluoride<br />

release was measured in-vitro in a buffer solution using a fluoride ion-specific electrode. The chart<br />

shows the sustained release of both RelyX <strong>Luting</strong> <strong>Cement</strong> <strong>and</strong> RelyX <strong>Luting</strong> <strong>Plus</strong> <strong>Cement</strong> in<br />

comparison to the other resin-modified glass ionomers <strong>and</strong> the conventional glass ionomer<br />

(Ketac Cem Glass Ionomer <strong>Luting</strong> <strong>Cement</strong> from <strong>3M</strong> ESPE).<br />

µg/g<br />

9000<br />

8000<br />

7000<br />

6000<br />

H<br />

J<br />

B<br />

H<br />

J<br />

B<br />

H<br />

B<br />

J<br />

B<br />

H<br />

BJ<br />

F<br />

F<br />

F F<br />

5000<br />

4000<br />

3000<br />

F<br />

2000<br />

F<br />

1000<br />

0<br />

1 21 41 61 81 101<br />

Days<br />

121 141 161 181<br />

Figure 10. Cumulative Fluoride Release<br />

Field Evaluation Results<br />

With the introduction of the RelyX <strong>Luting</strong> <strong>Plus</strong> cement, a clinical use field evaluation was conducted.<br />

137 dentists cemented a total of 1889 restorations with the RelyX <strong>Luting</strong> <strong>Plus</strong> cement.<br />

The observation period was approximately 6 weeks. The dentists completed a questionnaire<br />

regarding their experiences in use <strong>and</strong> application of the product.<br />

The dentists that participated in the study used a variety of cement types for their routine cementation<br />

including resin cements, resin-modified glass ionomers, conventional glass ionomers, polycarboxylates,<br />

<strong>and</strong> zinc phosphate.<br />

Figure 11 shows the range <strong>and</strong> numbers of types of restorations that were placed during the<br />

evaluation.<br />

Other<br />

Provisional stainless steel crowns<br />

Pins or posts<br />

Strengthened-core ceramics<br />

Metal inlays or onlays<br />

Metal-based bridges<br />

Metal-based crowns<br />

Figure 11. Types of Restorations<br />

1 Hicks MJ, Flaitz CM, Quintessence Int. 2000 Sep;31(8): 570-8.<br />

H<br />

J<br />

0 300 600 900 1200 1500<br />

Restorations Type<br />

H<br />

J<br />

B<br />

B RelyX <strong>Luting</strong> <strong>Plus</strong><br />

J RelyX <strong>Luting</strong><br />

H FujiCEM<br />

F Fuji <strong>Plus</strong><br />

Ketac Cem

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