Consultants’ Comments

• “I am pleased with the esthetics and color stability in the restorations cemented with GC FujiCEM™ 2.”
• “The lack of sensitivity is very important.”
• “Retention is everything. I was very pleased to see sofew debonds with this resin-modified glass ionomer.”

Patients’ Comments

• “No problems with this crown.”
• “It feels good and looks good.”
• “I had some sensitivity at first but it went away quickly. It has been fine.”

Description

GC FujiCEM™ 2 is a resin-modified glass ionomer luting cement. Compared to original GC FujiCEM, it has increased bond strength to tooth structure and restorative materials. GC FujiCEM™ 2 is indicated for permanent cementation of all types of metal-, resin-, alumina- and zirconia-based inlays, onlays, crowns, bridges, and endodontic posts. Working time is two minutes 15 seconds, and intraoral setting time is four minutes and 30 seconds. It is available in a light yellow shade and comes packaged with one 13.3 g GC Paste Pak cartridge, 20 mixing tips and one GC FujiCEM™ 2 Dispenser. Refi lls are also available with either two cartridges and 44 mixing tips in an automix package or two cartridges and a mixing pad for the hand-mixing package.

The purpose of this study was to determine the long-term clinical performance of GC FujiCEM™ 2. THE DENTAL ADVISOR evaluated performance at two-year recall.

Clinical Evaluation Protocol

‚Ä¢ One hundered thirty all-ceramic restorations, cemented with GC FujiCEM™ 2, were recalled at two years. Restorations included 104 zirconia and lithium disilicate crowns, 17 bridge units, 6 implant crowns, and 3 implant bridge units (Figure 1).

• Restorations were placed on 102 molars, 12 premolars and 16 anterior teeth (Figure 2).

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Clinical Observations at Two Years

Esthetics

The color stability of GC FujiCEM™ 2 was rated excellent (Figure 3), ensuring optimal esthetics of the restoration.

Retention

GC FujiCEM™ 2 was rated excellent (Figure 3) when used to cement zirconia and lithium disilicate restorations in this study. Only six (<5%) of these restorations debonded in the past two years.

Resistance to Marginal Discoloration

The resistance to marginal discoloration of GC FujiCEM™ 2 was rated excellent (Figure 3). There was minimal discoloration that might indicate microleakage.

Lack of Postoperative Sensitivity

The majority of patients reported no sensitivity (Figure 3). Four patients (3%) indicated there was some initial mild sensitivity that resolved within a few months.

Summary

One hundred thirty all-ceramic restorations, cemented with GC FujiCEM™ 2, were recalled at two-years. GC FujiCEM™ 2 received excellent ratings for esthetics, resistance to marginal discoloration, lack of postoperative sensitivity, and retention. Less than 5% of all restorations debonded during the fi rst two years in service. These long-term clinical results provide confidence in this resin- modified glass ionomer. These long-term clinical results provide confi dence in this resin-modifi ed glass ionomer. GC FujiCEM™ 2 received a 98% clinical performance rating at two years.

Laboratory Properties

Mechanical properties of GC FujiCEM™ 2 as independently tested at THE DENTAL ADVISOR Biomaterials Research Center are listed in Table 1.