Composite resin bonds to a tooth through a process involving a special curing light.
The Bonding Process Explained
The process of bonding composite to a tooth involves several key steps:
- Application: A putty-like composite resin is applied to the tooth.
- Shaping: The composite is molded and smoothed to achieve the desired shape and contour.
- Curing: The composite resin is hardened using a special curing light. This curing light is what effectively "bonds" the material to the tooth surface.
- Polishing: Finally, the tooth is polished for a smooth finish.
Here is a table summarizing the composite bonding process:
| Step | Description |
|---|---|
| Application | Resin is applied to the tooth surface. |
| Shaping | Resin is molded and smoothed into the desired shape. |
| Curing | A special light hardens the resin, bonding it to the tooth. |
| Polishing | The tooth is polished for a smooth finish. |
How the Curing Light Works
- The curing light emits a specific wavelength of light that initiates a chemical reaction within the composite resin.
- This reaction causes the resin to harden and solidify.
- As the resin hardens it forms a strong bond with the prepared tooth surface at the microscopic level.
Key Points About Bonding
- The bond created is a mechanical and chemical interaction between the composite and the tooth.
- Prior to the application of composite, the tooth may require etching with phosphoric acid and the application of an adhesive (also known as a 'bonding agent'), which promotes the binding to the tooth.
- The result is a stable and durable restoration that is designed to withstand biting forces and the environment of the mouth.
