Inlays and Onlays Dental Lab China
Robust Inlay Onlay Overlay
In dentistry, inlays, onlays and overlays are types of dental restorations used to repair decayed or damaged teeth. They are custom-made prosthetics and can be made from porcelain, composite resin, base metal or gold. Currently, most patients choose E.max as the material (a type of lithium disilicate glass-ceramic material), because it is aesthetic, durable and biocompatible.
Dental inlays, onlays and overlays look similar, but they differ in the extent of coverage and the area of the tooth they address. They are fabricated outside the mouth, and then cemented into the damaged place of the tooth (often the chewing surface) to restore its shape, strength, and function.
Featured Dental Inlays and Onlays
Inlay Onlay
Inlays are used when the damage or decay is confined within the cusps (the raised points) of the tooth. They fit into the prepared cavity within the tooth and are bonded in place. They’re a bit like a jigsaw puzzle piece that precisely fills the space left by the removed decay. Onlays are similar to inlays but are used when the damage or decay extends beyond one or more cusps of the tooth.
Overlay
Overlays cover the entire biting surface of a tooth. They are more extensive than inlays and onlays and are often used when a significant portion of the tooth’s surface is damaged or decayed. Overlays are sometimes referred to as “full crowns” or “partial crowns” depending on their coverage area.
Robust Inlay Onlay Specification
| Product: | Dental Inlay Onlay |
| E.max inlay: | IPS E.max Ingots, Ivoclar from Liechtenstein |
| E.max ceramic: | E.max Ceram, Ivoclar from Liechtenstein |
| Composite inlay: | SHOFU from Japan |
| Way of manufacturing: | CADCAM, Traditional E.max press |
| Design software: | 3Shape |
| Our Scanning Device: | 3Shape |
Dental Inlay Onlay Lab Equipment & Material
Inlays and Onlays FAQ Guide
1. What is the difference between dental fillings and inlays?
In theory, the two methods can be used interchangeably, but inlays are often used for larger spaces. Both methods require removing the existing caries and then filling them with a drill, but the way the caries are filled is their main difference. During the filling process, the space is filled with amalgam, metal or composite resin, which is a faster process and requires only one clinical visit.
With inlay, the space is filled by a single, usually laboratory-made, solid part, usually made of a material such as gold, ceramic or composite resin. The inlay must be made precisely to the shape and size of the void, otherwise food and bacteria can enter the void and cause further decay. The advantages of inlays are that they do not shrink like fillings after placement. There is less chance of restoration failure, and there is less gap between the filling and the surrounding tooth structure. Inlays also produce harder and more durable surfaces when chewed, so they should be more reliable in the long run.
Traditional fillings can reduce the strength of natural teeth by 50%. As an alternative, bonding inlays or onlays directly to teeth can actually increase tooth strength by 75%. Therefore, they can be used for 10 to 30 years.
2. Types of Dental inlays from Robust
Here are some common inlay types:
- E.max
- Composite resin
- PFM
- Base metal
- Gold
Most inserts are now made of E.max or composite resin, a result of the growing desire for more natural teeth and the improved ability of restorations to stick to teeth.
3. Advantages and disadvantages of dental inlays
Here are some of the main advantages and disadvantages of dental inlays:
Advantages of dental inlays
Inlays are an indirect repair (fill) method used to repair large areas of damage or voids. Inlays have several advantages over traditional (direct) fillings:
- The inlays are very strong and durable. Especially well-made gold inlays, with proper care, have an extraordinary longevity.
- Ceramic inlays give restored teeth a natural, aesthetic appearance. They can make restored teeth almost indistinguishable from surrounding natural teeth
- Compared with traditional fillings, inlays have better physical properties. Because inlays are custom-made for the patient, they can achieve better aestheticss, contact points and occlusion.
- Inlays have less microleakage (diffusion of bacteria/oral fluids between the tooth and filling material) and lower postoperative sensitivity than direct fillings, better protecting the remaining natural teeth.
Disadvantages of dental inlays
Inlay is a very popular restorative technique used to preserve natural teeth, but the general disadvantages of inlays include:
- Higher cost compared to traditional fillings, due to the need for a dental laboratory
- Extending the procedure by requiring two appointments, compared to traditional fillings
- Complications such as edge leakage or food staining could develop over time
- There is a risk of loss of vitality from tooth extraction
4. What is a good dental inlay?
Whether a dental inlay is good or not is its margins. The margins of a dental inlay should not be thick (no steps). A great inlay should precisely fit the delayed area of the natural tooth. So when the inlay is placed, no microleakage or food trap will occur, and the patients will not feel the steps with their toungs. such inlay can also provide stability and strength for the strong biting forces. To achieve this, a good dental lab is necessary. Robust dental lab is frequently praised by dentists, because of its perfect magins with dental inlays.
