Related Experiment Video
Updated: Jun 28, 2026
05:30
Roughness Impact of Piezoelectric Dental Scaler on Two Distinct Flowable Composite Filling Materials
Published on: January 10, 2025
Use of flowable composites for orthodontic bracket bonding
Dong-Bum Ryou1, Hyo-Sang Park, Kyo-Han Kim
1Department of Dentistry, Graduate School, Kyungpook National University, Daegu, Korea.
The Angle Orthodontist
|October 25, 2008
Summary
Flowable composites show promising results for orthodontic bracket bonding, offering good bond strength and easier cleanup. These materials may be a convenient alternative to traditional bonding systems.
Area of Science:
- Dental Materials Science
- Orthodontics
- Adhesive Dentistry
Background:
- Orthodontic bracket bonding relies on effective adhesion between brackets and enamel.
- Flowable composites offer potential advantages in handling and application for bracket bonding.
Purpose of the Study:
- To evaluate the bonding characteristics of four flowable composites for orthodontic bracket bonding.
- To compare their shear bond strength (SBS), adhesive remnant index (ARI), flowability, and flexural strength against conventional materials.
Main Methods:
- Four flowable composites were tested for bonding metal brackets to acid-etched human enamel.
- Shear bond strength (SBS) and adhesive remnant index (ARI) were assessed after 24-hour water storage.
- Material flowability and flexural strength were also evaluated.
Main Results:
- Flowable composites exhibited SBS values between 7.2-8.3 MPa, while Transbond XT (TX) showed a higher mean SBS of 10.9 MPa.
- Flowable composites demonstrated superior flowability but generally inferior flexural strength compared to TX and Filtek Z250 (FZ).
- Two flowable composites (Grandio Flow and UniFil LoFlo Plus) yielded higher ARI scores, indicating more residual adhesive on enamel post-debonding.
Conclusions:
- Flowable composites can be conveniently used for orthodontic bracket bonding, considering their SBS and ARI scores.
- These materials offer a practical alternative, potentially simplifying the bonding procedure.
Related Concept Videos
01:12Flow Table Test
The flow table test is an established method used to assess the workability of concrete, particularly useful for evaluating highly flowable concrete mixes. This test employs an apparatus that consists of a wooden board topped with a steel plate, collectively weighing 35 pounds. The board is connected to a base via a hinge and measures 27.6 inches on each side.
Concrete is placed within a truncated cone mold that is 8 inches high with an 8-inch base diameter and a 5-inch top diameter. The...
Concrete is placed within a truncated cone mold that is 8 inches high with an 8-inch base diameter and a 5-inch top diameter. The...
01:12Bonding and Strength of Aggregate
The bond between aggregate particles and the cement matrix is significantly influenced by the shape and surface texture of the aggregates. High-strength concretes benefit from a rougher texture, which leads to stronger bonding due to greater adhesion. Angular aggregates with larger surface areas also enhance this bond. The bonding quality, however, is complex to assess as no universally accepted test exists. Good bonding is indicated when a crushed concrete specimen shows some aggregate...
01:25Accelerated Curing of Concrete
Accelerating concrete curing is achieved by applying heat and additional moisture. This process accelerates the hydration of the cement, resulting in an earlier strength gain in the concrete. Steam curing is a method wherein the concrete products are either transported through a chamber on a conveyor belt or encased in plastic, allowing steam at atmospheric pressure to circulate freely around them. This process begins with a phase of moist curing that typically lasts between 3 to 5 hours, after...