Strength & Esthetics in One Composite!
Simile™ nano-hybrid composite offers the esthetics of a microfill, for use in the anterior, and the strength of a hybrid, for use in the posterior region. It is available in the most popular, easy-to-match shades, including two incisal and two bleach shades. Simile™ is always 25% to 30% less expensive than most comparable micro-hybrid composites.
Simile™ provides an easy-to-handle viscosity throughout placement and is available in convenient syringe or compule formats. It offers superior properties for all classes of restorations.
After years of development, Simile represents the finest composite Pentron® Clinical Technologies has ever produced. Its nano particle filler technology gives unbeatable polishability in a high strength, all-purpose composite. Simile™'s polycarbonate/Bis-GMA resin is not only tough, it also provides soft, sculptable handling that doesn't get sticky.
Physical Properties
| Filler type: |
Barium boro-silicate glass, nano-particulated
silica and zirconium silicate |
| Flexural strength: |
120 MPa |
| Flexural modulus: |
10.2 GPa |
| Compressive strength: |
300 Mpa |
| Compressive modulus: |
6.9 GPa |
| General surface wear rate: |
3.8 µm per year |
| General margin wear: |
11.2 µm per year |
Color stability after accelerated aging at 3 energy levels:
150 kJ/m
2: 4.54 (0.09)
300 kJ/m
2: 4.41 (0.09)
450 kJ/m
2: 4.27 (0.10)
Evaluations
CRA Clinician's Guide to Dental Products & Techniques
Nanofill Composites - What can clinicians expect?
CRA Newsletter, January 2003
“Physical & clinical properties of… Simile™ indicate clinicians can expect about the same performance as Herculite XRV & Filtek Z250, but with improved handling and a little smoother surface.”
Comparative study done in 2002 by:
Dr John Powers, Houston-Texas
Dr Jeffrey Thompson, Chapel Hill, North Carolina
Dr Shiro Suzuki, Birmingham, Alabama
- Lowest wear* (Compared to Esthet-X® and Filtek® Z250)
- Outstanding physical properties* (Compared to Esthet-X, Point-4™, Filtek® Z250 and Heliomolar®)1
- Highest gloss after polishing* (Compared to Esthet-X®, Point-4™, Filtek® Z250 and Heliomolar®)
- Smoothest surface after polishing* (Compared to Esthet-X®, Point-4™, Filtek Z250 and Heliomolar®)
*Data on file
1: Trademarks of Dentsply, Sybron/Kerr, 3M and Ivoclar Vivadent Inc. respectively.
Clinical case
Simile FAQ:
Q. What is a “nano hybrid” composite?
A. A nano-hybrid composite has conventional glass and innovative nano-scaled fillers. The advantage of a nano-hybrid composite over a hybrid or microfill composite is the combination of great esthetics, exceptional polishability and high strength.
Q. What is the wear resistance of Simile Composite?
A. The surface wear of Simile is about 4 microns per year. The marginal wear of Simile is about 11 microns per year.
Q. How much shrinkage does Simile Composite exhibit?
A. Shrinkage is about 2.2% upon cure.
Q. How many shades does Simile Composite offer?
A. There are currently 25 shades of Simile composite available for your convenience. Shades include A1 to D4, opaque and incisal shades and two bleach shades.
Q. Is Simile Composite an anterior or posterior restorative material?
A. Simile composite is ideal for both anterior and posterior restorations. The strength of the composite makes it an ideal choice for posterior restorations. Esthetically Simile composite is comparable to leading microfill composites making it a great choice for anterior restorations as well.
Q. What is the filler content of Simile Composite?
A. The overall filler loading in Simile Composite is about 75% by weight, 68% by volume.
Q. What is the depth of cure and cure time for Simile Composite?
A. Cure time and related depth of cure are:
- 5 second cure with a high power output light; depth of cure up to 4 mm.
- 10 second cure with a standard cure light; depth of cure up to 4.3 mm.
Q. Can I use any curing light to cure Simile Composite?
A. The light initiator in Simile Composite is CQ. This means that most popular lights on the market can be used including LED, Pac lights and halogen lights.
Q. How is Simile Composite polished?
A. Any polishing system can be used to finish Simile Composite restorations. We highly recommend our Fini™ Polishing Disks because of the incredibly smooth finish and brilliant polish they create on all resin and ionomer materials.
Q. What bonding agents can be used with Simile Composite?
A. Any 4th, 5th, or 6th generation bonding agent will work with Simile Composite. Please follow the instructions for each individual bonding agent.
