The biggest difference between inlay and onlay is the amount of surface they cover in repairing damaged teeth. Inle is smaller than Anle. In simple words, the inlay sits inside the tooth, the onlay sits on the tooth and covers the bite surface of the tooth and restores at least one cusp. In cases where there is more damage to the cusp or edges of the tooth or sometimes the chewing surface of the tooth, an onlay may be needed. **The most important differences between inlays and onlays are:** **Degree of tooth coverage and application**: Inlay only fills the space between the grooves in the central surface of the tooth, but inlay repairs a wider surface and side damage from the tooth. - **Type of restoration:** An inlay is more like an internal filling of a tooth, but an inlay is like a piece of veneer. **Amount of tooth sharpening**: Onlay needs more sharpening than inlay. - **Structure and resistance**: Both are made of resistant and durable materials, but the onlay gives more strength to the tooth due to more coverage. When is the inlay used? The dentist uses an inlay when the tooth cavity is too large to be repaired with a normal filling. Dental inlays are used only when the molar has a relatively small cavity. A surface that does not affect the tongue, cheeks or adjacent teeth. The inlay is produced as a solid and integrated piece to be attached to the tooth to fill the space. If the tooth damage is more extensive, the dentist uses onlays instead of inlays. **English text:** "An inlay is used when there is no damage to the cusp of the tooth, and the inlay can simply be placed right on the tooth." **Translation** **Persian**: "The inlay is used when there is no damage to the cusp of the tooth and the inlay is simply placed on the tooth." Quoted from drmichaelsdentalcare When is it used? Dental inlays are similar to dental inlays in many ways, the difference between inlays and dental inlays is their size and size. Additionally, inlays are designed to cover the entire tooth, while inlays only cover a portion. Onlays are specifically used for decay and damage to the cusp of the tooth as well as the chewing areas. When the damaged area is too large to use a standard filling, your dentist often chooses an onlay to treat your tooth. An onlay covers a different area of ​​your tooth than an inlay. An onlay covers the cusps (protrusions) of your teeth, while an inlay is placed more inside the lines and central cavity of the tooth. Anle protects and treats the decayed tooth and repairs the damaged areas of your tooth. **In short, the conditions under which a dental specialist may recommend Anle are:** 1. When the cusp of your tooth is damaged, so inlays or conventional fillings cannot be used. 2. If you have a cavity on a tooth with poor structure that may crack if repaired with a conventional filling. 3. To prevent the removal of the natural tooth structure that is not damaged. > Read more: Covering a broken front tooth Is this better or the other? Although the difference between dental inlay and inlay is obvious in the restoration of teeth, depending on the extent and severity of the damage to the tooth, the dentist will decide which one is better for treating your tooth. A dental annulus is used for more extensive lesions that not only involve the area between the cusps, but also extend over one or more cusps. Onlays are sometimes known as "partial veneers" because they cover a larger portion of the tooth than inlays. While inlays sit within the cusps, inlays extend beyond them, covering the chewing surface and sometimes even extending past the tooth. > English text: > > "Inlay can be used for just a portion of the tooth, an onlay is better when there is more extensive damage. Usually, the difference between the onlay vs. dental inlay is based on the part of the tooth being affected by the damage or tooth decay. For example, if the damage is affecting the majority of the biting surface or cusp of the tooth, then a full onlay is needed to cover the entire tooth." > > **Persian translation**: "Inlay can be used only for a part of the tooth, but when the damage is more extensive, inlay is better. Usually, the difference between an inlay and an inlay is based on the part of the tooth that is affected by damage or decay. For example, if the damage involves a major part of the chewing surface or the cusp of the tooth, a complete onlay is required to cover the entire surface of the tooth. > > Quoted from the mydental site Comparing the benefits of inlay and inlay Dental inlays and inlays are widely used restorations in restorative dentistry, which have many advantages and preserve the patient's natural teeth. Before we describe the difference between dental inlays and onlays in terms of advantages, we first mention the common advantages of both. Inlays and onlays protect the tooth against decay more than normal fillings. Inlays and inlays match the color of the patient's teeth and are also popular in terms of aesthetics. These restorations are more durable than normal fillings and increase the lifespan of the tooth. Below we mention the advantages of both repairs: ### What are the benefits of this? 1. **Better Durability:** Inlays are very strong and can easily withstand the force of chewing and daily wear and tear. 2. **Less damage to the tooth structure:** Inlays need to remove less of the original tooth tissue than onlays, which means that your dentist can preserve more of the natural structure of your tooth. 3. **Beauty**: Porcelain and composite resin can be matched exactly to the color of the patient's teeth and create a more natural appearance than metal fillings. 4. The inlay is placed inside the tooth and no part of it is placed outside the crown, which increases the patient's comfort and does not cause problems for the patient when chewing. 5. Inlay is more suitable for deep cavities that have not reached the root of the tooth. > (If the restoration of damaged teeth is important to you, building up or reconstruction of teeth may be a suitable option) ### What are the benefits of Anle? 1. Compared to inlay, inlay covers a large part of the tooth and is a better treatment for teeth that have suffered more damage. Inlay is not able to repair the chewing surface of teeth and cusps. 2. Inlays are more durable than inlays and can withstand more pressure. 3. Onlays are suitable for back teeth. 4. Although inlays cause more grinding of the tooth surface than inlays, they preserve more of the tooth structure than dental veneers. 5. For teeth that have already been filled and need restoration, inlay is better than inlay. Disadvantages of inle and anle; Which one has more disadvantages? Another difference between dental inlays and onlays is the difference in the disadvantages of these two restorations. In the following, we point out the difference between dental inlays and onlays in terms of disadvantages: 1. Inlays are suitable for smaller caries, and teeth with severe caries cannot be repaired with inlays. 2. Inlays require more tooth grinding. 1. Inlays and onlays are more expensive and costly than normal fillings. Anle is more expensive than inle. 2. Anle is not suitable for smaller teeth. 3. The dental treatment process with an inlay is slightly longer than inlay. Anle needs more time to build and install. For this reason, sometimes the patient may need three treatment sessions. ### Guide to choosing between dental inlays and onlays for dental restorations Deciding between an inlay and an onlay depends entirely on the location of the damaged area. Your dentist is the best person to determine which restoration is right for you. Considering the difference between an inlay and an inlay, the dentist chooses a treatment that preserves your tooth. > Read more: When is tooth filling necessary? For tooth decay that is only concentrated in the center of the tooth, an inlay is a better option than an onlay. Anle is better for teeth with severe decay and makes the restoration stronger. In addition to covering the surface of the carpets, Anle also restores the inner part. The difference in cost Treatment cost and price is another difference between dental inlay and onlay. In general, the cost of treating teeth with dental inlays and onlays is higher than that of regular fillings. But if we want to express the difference between dental inlays and inlays in terms of costs, we must mention that the cost of restoration with inlays is more than inlays. Because the ring covers a large area of ​​the cusps, it needs more materials to make. So it is natural that it costs more. Another factor that makes anel expensive is the materials used in its construction, which must be of higher quality to maintain the strength of the restoration. On average, the cost of anle is higher than 2 to 4 million tomans. **final word** In this article, we mentioned the difference between dental inlay and onlay. Although these two restorations work to preserve the patient's natural teeth, they have differences. The first difference between inlays and onlays is the extent of damage that can be repaired. An inlay is a restoration that is placed inside your tooth. An inlay is used only when the cusp of the tooth is still healthy. In addition to covering the central part, the onlay also restores one or more ridges (cusps) of the tooth. > Read more: How much does tooth veneer cost? For this reason, they are also called piece coating. The dentist grinds a lot of teeth to use the inlay, but the amount of tooth grinding is less in the inlay. Ultimately, the best decision to treat your tooth is made by an experienced dentist. Be sure that your dentist will do his best to preserve your natural teeth and increase their longevity. ###