Opus Bulk Fill Flow is a low-viscosity light-curing composite (flowable) recommended for the basis and liner of restorations on posterior teeth. Its low shrinkage stress associated to its high cure depth – due to the composite’s translucency – allows Opus Bulk Fill Flow to carry on increments of up to 4mm, therefore minimizing the time for the construction of large restorations. With approximately 68% of fillers, the composite shows enough mechanical strength to be used under direct restorations. The most superficial layer of the restoration (at least 2mm thick) should be done with conventional methacrylate-based composite resins such as Opallis (FGM), Llis (FGM), Opus Bulk Fill Condensable (FGM). That layer gives the restoration higher mechanical strength, resistance to wear, form and aesthetics


• 1 syringe with 2g
• 10 applicator tips
• Instructions for use

Characteristics and Advantages

• Allows for up to 4mm increments in depth.
• Excellent consistency.
• Self-leveling, which allows for perfect adaptation of the material to the wall of the cavity.
• Anti-gravity action – perfect for superior teeth.
• Low shrinkage stress.
• Practical and quick in a single step.
• Greater opacity = better aesthetics.
• Available in 3 colors (A1, A2, A3).


• Class I and II restoration basis.
• Liner under direct restorative materials.
• Regularization/planification of the prepared walls of the cavity.
• Repair of small enamel defects.
• Repair of temporary materials in acrylic and resin.

Step by Step

Step 1

Figure A: with the prepared cavity, and the proximal matrix accurately positioned, it is possible to observe the amplitude of the cavity.

Note: as often as possible, use the absolute isolation when performing restorations with resinous materials.

Step 2

Figures B-C: proceed with the adhesive technique. Opus Bulk Fill Flow is compatible with all the classes of adhesives.

Note: In the illustration, acid etching was carried out with Condac 37 (FGM) only on the edges of the cavity on enamel. The dentine portion was not acid treated, since the self-etching adhesive Ambar Universal (FGM) was used.

Step 3

Figure D – I: the cavity is ready for receiving the resinous material. In single increments of up to 4mm, fill the cavity up to 2mm to the cavosurface angle. Light cure it for 20 seconds.

Note that the opacity of the composite is more elevated to allow for better aesthetics in the conclusion of the case. Another interesting characteristic is the self-leveling capacity (figures F and G).

Note: to avoid the incorporation of bubbles in the material, it is not recommended to submerge the application tip in the composite during application. Begin the application on the edges of the proximal case.

Step 4

Figures J-M: as the superficial layer, conclude the restoration with condensable resin, e.g.: Opallis (FGM) with greater opacity.

Note: The condensable resin allows for adequate sculpting and mechanical resistance necessary to the restoration.

Step 5

Figure N: proceed with the finishing and polishing of the restoration.


Which bond technique can be associated with the use of Opus Bulk Fill Flow?

Opus Bulk Fill Flow is recommended for the single-step bond technique (e.g. Ambar Universal, FGM), two steps (e.g. Ambar – FGM) or three steps.

May I fill the whole cavity with Opus Bulk Fill Flow?

No. The most superficial layer of the restoration (at least 2mm thick) must be done with methacrylate-based conventional composite resins, e.g. Opallis (FGM), Llis (FGM) or Opus Bulk Fill Condensable (FGM). This layer allows for a better mechanical and wear resistance, as well as better form and aesthetics.

How do I get a perfect aesthetics, since the bulk type resins are more translucent than the traditional ones?

The hint is that the more superficial layer (2 mm occlusal) must be filled by a condensable resin with higher opacity, for example a resin for dentine, in order to cover the translucency of the material.

Information for the Professional

Precautions and contraindications

• For dentistry use only.
• Read carefully the recommendations and instructions for use.
• Use Opus Bulk Fill Flow only as informed in these instructions.
• Do not use Opus Bulk Fill Flow in patients with a history of allergy to composite resins that are acrylate based. In case of allergy, suspend the use and request the patient to seek medical assistance.
• In order to minimize the risk of irritation, regions of the cavity preparation too close to the pulp should be adequately protected (e.g.: application of calcium hydroxide).
• To avoid allergic reactions to methacrylate monomer, it is recommended to constantly wear gloves. If Opus Bulk Fill Flow gets in touch with the hands, wash them thoroughly with water.
• In case of eye contact, wash them thoroughly with water and contact a doctor immediately.
• When using a light-curing device, eye protection should be worn.
• Opus Bulk Fill Flow is contraindicated when it is not possible to establish an operating area that is dry or it is not possible to follow the described technique correctly.
• Do not use materials that are eugenol-based with Opus Bulk Fill Flow.
• Opus Bulk Fill Flow should not be swallowed or inhaled. In case this occurs, seek medical help immediately.
• Do not leave Opus Bulk Fill Flow within the reach of patients and children.
• Place the lid on the syringe after each use.
• Do not reuse the applicator tip.

Conservation and Storage

• Keep the product in a cool place with the packaging always closed and protected.
• Protect it from direct sunlight. Exposure to light leads to premature curing.
• Store product at temperatures between 5 °C and 27 °C. (41°F and 81°F).
• Do not freeze it.
• Do not expose it to high temperatures


Any odontological product should only be used by dentists, prosthetics professionals and authorized dental laboratories. Do not use the product if it is expired. For disposal, follow the legislation of your country. Keep it out of the reach of children. Avoid contact of Opus Bulk Fill Flow non-cured with skin, mucosae and eyes. When not cured, the product may have a lightly irritating effect and promote make the patient more sensitive to methacrylate.