What are the materials of metal dentures

Damaged teeth have a great impact on our daily life and diet, so when teeth have problems, fall out or are damaged, we have to install dentures so as not to affect our normal life. However, there are many kinds of denture materials, among which metal dentures are the most common one. However, many people do not know much about its materials, fearing that it will cause damage to the oral cavity. Let's take a look at what materials are used for metal dentures.

What are the materials of metal dentures?

There are two types of materials used to make dentures: metal and non-metal.

(1) Metal materials

Metal materials are further divided into alloys and pure gold. Alloys such as nickel-chromium alloy, cobalt-chromium alloy, copper alloy, stainless steel, titanium alloy, gold-palladium alloy, etc. Metal materials are mainly used to make clasps, supports, brackets, etc. for removable dentures, as well as metal crowns and bridges for fixed dentures.

Metal materials can also be divided into precious metals and non-precious metals. What is usually referred to as precious metal porcelain refers to a metal crown that contains more than 80% gold and is then made of platinum or rhodium, palladium and other elements. It is relatively expensive, but it has the obvious advantages of having a gold alloy crown with a gloss close to that of natural teeth, good biocompatibility, and safe use. In particular, the contact between the porcelain teeth and the gums is very natural, and there is no blue-black gum edge. Porcelain teeth made of non-precious metals are mostly made of a metal inner crown made of nickel-chromium alloy and an external high-temperature porcelain. Due to their relatively low price, they are widely used in my country. However, this material has some defects: poor marginal fit; poor biocompatibility with the human body; after wearing for a period of time, black lines are likely to appear in the marginal area where the neck of the tooth contacts the gum tissue, especially in the front teeth area, which affects the appearance to a certain extent; the thermal expansion coefficients of nickel-chromium alloy and porcelain do not match, resulting in porcelain collapse.

Among non-precious metal materials, there is a new material of pure titanium porcelain teeth. Its biggest feature is that it has no toxic side effects on the human body and has the best biocompatibility. Its price is higher among non-precious metal materials, but lower than precious metals.

(2) Non-metallic materials

Non-metallic materials are mainly divided into plastics, composite resins and ceramic materials. Plastics and composite resins are widely used in making crowns and bases (teeth trays) for dentures. Ceramic materials are mainly used to make dental crowns. Porcelain teeth have good wear resistance, but they are not firmly bonded to the dental tray, are easy to fall off, and are difficult to modify. Since the late 1980s, with the emergence of super-ceramic composite fiber bridge technology, all-ceramic restorations of dental crowns (all-ceramic crowns) will gradually replace metal porcelain teeth. All-ceramic crowns can completely avoid metal allergic reactions and have better aesthetic effects, but their disadvantages are that they are not strong enough and are very expensive.

The above is an introduction to the materials used for metal dentures. After understanding it, we know that there are many types of materials for metal dentures. It is not just stainless steel as we imagined. We must go to the hospital for treatment in time according to our own dental conditions and listen more to the doctor's advice.