Fuji IX GP is GC America's latest glass ionomer restorative material. Fuji IX is a member of the newest class of self-cure glass ionomer restorative materials that has been categorized as "densified", "condensible", or "viscous" by various authors. Fuji IX GP was developed by GC International as the restorative material for the World Health Organization's Atraumatic Restorative Treatment (ART) technique. The ART technique involves caries removal and tooth restoration with adhesive restorative materials using only hand instrumentation. This restorative service is usually performed by auxiliary personnel who have limited experience in dental procedures and often provided under primitive field conditions. Although GC International considers exact particle size information proprietary, Fuji IX GP has a smaller mean particle size than earlier self-cure glass ionomer restorative materials. This smaller particle size is purported to give improved wear rates and faster setting time than earlier glass ionomer materials. Fuji IX GP powder is composed of 95 percent by weight alumino-fluoro-silicate glass with 5 percent polyacrylic acid powder. Fuji IX GP liquid is composed of 50 percent distilled water, 40 percent polyacrylic acid, and 10 percent polybasic carboxylic acid. Fuji IX GP is prepared with a powder/liquid ratio of 3.6/1.0 and should be mixed in 25 to 30 seconds. Fuji IX GP has a stated two-minute working time with a net setting time of two minutes and twenty seconds. GC America states that final finishing and polishing may be initiated six minutes from the start of mixing the material. The material should be protected with either Fuji Varnish or Fuji Coat LC during initial setting and after final finishing to prevent material degradation from corresponding moisture contamination or desiccation. GC America states that Fuji IX is a condensible (similar to amalgam) general-purpose posterior glass ionomer. Also, this restorative material is promoted as possessing excellent clinical handling characteristics. Fuji IX's purported uses include: Amalgam/Composite/Compomer alternative for pediatric and geriatric patients; intermediate restorative; long-term provisional restorations for posterior teeth; final restoration for non-stress bearing areas; and core build-up and sandwich material. Fuji IX GP's purported advantages over current glass ionomer materials are decreased moisture sensitivity, improved wear characteristics, and no requirement for a visible light curing unit (if Fuji Varnish is used). Fuji IX GP is available in both powder/liquid and precapsulated delivery systems. For the purpose of this evaluation, DIS evaluated the powder/liquid delivery system to evaluate this material's suitability as a military contingency interim or temporary restorative material. Intermediate Restorative Material (IRM) has traditionally been used as a temporary restorative material in dentistry. Although its use has diminished in recent years because of the advent of glass-ionomer cements, it remains an important component of readiness dental kits. Unfortunately, IRM has some significant limitations as a temporary restorative material including sensitivity to humidity and temperature, poor long-term sealing, lack of adhesion to tooth structure, and challenging handling characteristics. A more user-friendly readiness provisional material that has better performance features than IRM would be welcomed by military dentistry.
Fuji IX GP was well received by the clinical evaluators. Users liked the simple, compact packaging and found that the instructions were easy to follow. The clinical evaluators found Fuji IX GP easy to integrate into their existing clinical practice, especially since the viscosity and consistency of the material can be tailored to meet clinical needs. They were impressed with the material's apparent physical properties, finding Fuji IX GP to be a clinically dense and tough material. Fuji IX GP afforded excellent retention when used as a provisional, and all of the evaluators found it to be as easy or easier to finish than other glass ionomers that they were familiar with. Overall, users appreciated Fuji IX GP's clinical handling characteristics, and the majority could condense it without difficulty. Fuji IX GP is radiopaque, adheres to tooth structure and is a member of a class of materials that exhibits chemical adhesion and fluoride release and recharge. It is the only glass ionomer restorative material in its class that is available as a non-encapsulated form (precapsulated is also available) and it does not require a visible light curing unit. Fuji IX GP has shown excellent clinical results in the World Health Organization Atraumatic Restorative Technique program.
Fuji IX GP is tacky and may stick to instruments. It does require a varnish or VLC glaze for definitive restorations, but the varnish included in the kit was well tolerated by patients.
This review has been adapted from the DECS website. The DECS has no formal association with Dentalcompare or with vendors listed on dentalcompare.com. The DECS does not specifically endorse any particular product or vendor and is provided for informational purposes only.
Fuji IX GP Glass Ionomer
Viscosity/consistency can be tailored to meet clinical needs. Only glass-ionomer in its class available in non-encapsulated form. Does not require visible light curing unit. Faster set than conventional glass-ionomers. As easy or easier to finish than other glass ionomer materials.
May stick to instruments. Requires a varnish.
The Bottom Line
A fast-setting, easier-to-finish, non-encapsulated glass-ionomer with proven clinical performance.