The provided reference discusses the sizes (diameters) of intermaxillary elastics used with braces, often referred to as rubber bands or occasionally "bands" in this context, rather than their thickness. The reference lists common sizes in both inches and millimeters, along with their typical uses in orthodontics. The actual thickness of the elastic material itself is a different measurement not detailed in the reference.
According to the reference from orthoinsummary.com, common sizes for orthodontic elastics are:
Common Sizes of Braces Elastics (Bands)
These sizes represent the diameter of the elastic loop when relaxed, and different sizes are used to apply varying forces and address specific tooth movements.
| Size (inches) | Size (mm) | Typical Use |
|---|---|---|
| 1/8” | 3.2mm | Triangular elastics |
| 3/16” | 4.8mm | Crossbite elastics |
| 1/4” | 6.4mm | Extraction Class II / III elastics |
| 5/16” | 8.0mm | Non-Extraction Class II / III elastics |
Source: Use of intermaxillary elastics | orthoinsummary.com
Understanding Braces Elastics Sizes
The size of the elastic chosen by an orthodontist depends on the distance between the points of attachment (usually brackets or bands) and the amount of force required.
- 1/8" (3.2mm): These are relatively small and often used for short-range movements or specific configurations like triangular elastics, which involve connecting three points.
- 3/16" (4.8mm): Commonly used for correcting crossbites or other specific alignment issues over a moderate distance.
- 1/4" (6.4mm): Larger sizes like this are frequently employed for more significant movements, such as correcting Class II or Class III relationships, especially in cases involving extractions where larger movements are needed.
- 5/16" (8.0mm): Often used for Class II or Class III corrections in non-extraction cases, where potentially different force dynamics are desired over longer distances.
It's important to note that while the question asks about "thickness," the reference provides "size" or "diameter." The thickness of the elastic material refers to the gauge or cross-section of the rubber itself, which contributes to the force strength (often described as light, medium, heavy, etc.) but is distinct from the overall diameter of the elastic loop. The reference details the standard diameters and their uses.
