Opus Bulk Fill Flow composite allows for single filling technique of big cavities

The composite is an updated option for the professional that wants to improve their daily routine; this composite has very good mechanical properties and low shrinkage stress.

Dental procedures with more efficacy and that are practical at the same time. From this concept, FGM introduces to the market the OPUS BULK FILL FLOW composite developed for the filling of big cavities in a single increment or in increments of up to 4 mm. The product is used for the filling of the whole cavity in a single increment, requiring only a 2 mm thick cover by conventional composite resin.

Opus Bulk Fill Flow is an important option for the professional that is seeking more efficient dental practice. Currently, the simplification of dental procedures is mandatory in the offices. Many products and techniques have been developed according to this trend.

The professionals that opt to use Bulk Fill will experiment a significant reduction in the time needed for the procedure and will offer more comfort to the patients. To make this approach feasible, it was necessary to develop composite resins with new technology, based on an advanced formulation. All this technology allows the product to have a deeper cure depth and low shrinkage stress.blog opus-01

The most important applications are for class I and class II restorations (posterior teeth), as a base or a liner. Base is when the material is covered by a conventional composite resin but remains partially exposed to the oral environment in the interproximal regions. As a liner, the material is confined in the cavity, being involved by composite or dental tissue in all of its margins.

Single or large increments are possible due to two material properties: the reduction of shrinkage stress and a deeper cure depth. The low shrinkage stress avoids cuspal deflection and occasional cracks and fractures on the tooth. The marginal adaptation of the resin in the cavity is not compromised either since the resin has low shrinkage. The cure depth, in its turn, allows for an adequate reach of the curing light to the deeper parts of the cavity, where the material is applied first.

The precautions are the same recommended for a deep restoration. When a vital tooth is being treated, the lining of the pulpar wall with specific material (Calcium Hydroxide or CIV) is important, since the bulk fill resin, as well as other types, may irritate the tissue in this situation. When a non-vital tooth is being treated, no additional care is required. In both cases, when the restoration is being made with fluid resin, it is necessary that the cover be made with a conventional resin as the final layer.

The bulk fill composite has certain specific attributes for the professional to be able to deal better with its shrinkage stress. Therefore, the material presents a reduction in some mechanical properties that do not resist mastication. Moreover, due to its fluidity, the composite would not allow for functional/aesthetic sculpting of the occlusal area. The technique recommends a covering of around 2mm with a conventional composite resin (condensable). The scientific database on this type of material is rich, with many tests of its various characteristics in a variety of studies.


Get to know the opinion of those who have used and approved.


“I got to know the flowable composite increment technique in 2003. However, the flow-type composites at that time did not have a good marginal sealing quality and, after some time, the restoration margins became dark with strong infiltration appearance. With the Opus Bulk Fill Flow composite (FGM), the shrinkage is virtually zero, allowing for a better result in terms of safety and longevity for the procedure.”



Iduilton J. Grabowski Jr, specialist and Master in Orthodontics. Professor of specialization courses at Instituto Thum (Joinville/SC) and at ABO/PR (Brazilian Association of Orthodontics – Paraná State Chapter).



“Bulk Fill type composites make it easier and quicker for the dentist to carry out posterior teeth restoration processes, virtually eliminating the deleterious effects of the strength originated in the contraction due to the cure process. The Opus Bulk Fill Flow composite by FGM, which has a highly thixotropic consistency, do not flow to undesirable areas, even in an inclined plane. Additionally, it comes in different colors, which favors the aesthetics mimesis and mitigates the chances of grayish restorations, a fact that may occur with other materials of this category.”



Rodrigo Reis, PhD in Odontology –UFRJ (Federal University of Rio de Janeiro), graduated in Implants (CERTO Odontologia) and Head Professor of the Integrated Clinical Aesthetics course I.O. -PUC/RJ (Catholic University of Rio de Janeiro).



“Opus Bulk Fill Flow is a composite that came to stay. With excellent consistency, thixotropy and easiness of application, it may be used as a liner or as a base up to 4mm-thick. It will really facilitate and give more quality to the work of the dentist”



Fábio Sene, specialist and PhD in Restorative Dentistry – Faculdade de Odontologia de Bauru/USP/SP (University of São Paulo at Bauru – School of Odontology)  and Associate Professor – Universidade Estadual de Londrina, Faculdade de Odontologia (Londrina State University at Londrina – School of Odontology).



“The Bulk Fill concept is getting stronger as the scientific literature presents more and more results that show the feasibility of performing direct restorations in posterior teeth with a technique that is easier, quicker and less dependent of the operator. Following this trend, FGM introduces its own composite: the Opus Bulk Fill Flow. I had the opportunity of personally clinically evaluate it. It is a composite with excellent flow, with easy adaptation to the cavity walls, which also presents an interesting characteristic of remaining stable and leveled, regardless of the inclination of the restored tooth. Clinically, it delivered everything that is expected from a material of its category”.



José Carlos Garofalo, Ms. Professor in Dentistry and coordinator of the specialization course in Dentistry of EAP/APCD São Paulo. (State of São Paulo Dentist Association)

Published by Pablo Henrique Asenjo de Macedo

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