Currently, there are four types of bracket-type removable denture commonly used in clinical practice: cobalt-chromium bracket, titanium bracket, Vitagreen bracket and pure titanium bracket. All along, the bracket type movable denture has been mainly cobalt chromium bracket, but due to the limitation of the material performance and to ensure sufficient strength, it is often heavier or corroded; Pure titanium bracket is composed of pure titanium.
Non-toxic, high purity, excellent biophilic compatibility with the human body. Light specific gravity, 4 times lighter than gold. Low thermal conductivity, no metallic odor, non-magnetic, strong elasticity, high physical strength, comfortable taste. No obstruction to x-ray. High corrosion resistance.
In the medical field, titanium has become an indispensable material for dental implants. Pure titanium stent is lighter and biocompatible, but it is prone to shortcomings such as incomplete casting, poor fatigue strength and easy oxidation. Because of its excellent biocompatibility, titanium is widely used in clinical medicine. Applications in the field of dentistry are mainly implants, pure titanium bracket denture, titanium alloy porcelain crowns and other aspects.
Pure titanium bracket denture and cobalt chromium alloy bracket denture, compared with the light weight, high strength, no biological toxicity, the production process of the environment is not polluted and so on, it is a new denture material that all dentists are happy to use. Titanium metal has excellent physical and chemical properties, good biocompatibility, small specific gravity, corrosion resistance, titanium-made artificial bone, artificial joints, cardiac pacemakers, artificial tooth roots and so on have been widely used in clinical applications. Pure titanium can be made into crowns, bridges, and movable denture brackets.
Compared with traditional dental metal materials, the denture made of pure titanium has the following advantages in addition to excellent tissue affinity.
1. Light weight: Titanium has a small specific gravity, which is 1/4 of that of gold alloy and 1/2 of that of cobalt-chromium alloy, thus the weight of denture made of pure titanium is much lighter, which can reduce the burden of the remaining tissues in the mouth, and at the same time, it has a better comfort.
2. Moderate hardness: between enamel and dentin, so the crowns made of pure titanium will not wear down the natural teeth of the opposite jaw too much. The use of pure titanium to make the root of the tooth within the pile nail, can make the stress in the root of the tooth conduction more in line with the physiological pattern, reduce the risk of root fracture medical education network collection.
3. Low thermal conductivity: crowns made of pure titanium can better isolate hot and cold stimuli, which is conducive to the protection of the dental pulp, and there will be no soreness when eating too cold or too hot food.
4. No taste interference: titanium has good stability, there will be no sense of metal flavor in the mouth, does not cause taste interference.
5. Transmissive X-ray: titanium has a semi-transmissive X-ray, wearing a crown made of pure titanium, in the X-ray, you can check the crown of the internal caries, early detection, early treatment, which is used for the production of dentures of other metal materials do not have the advantage.
6. Better magnetic resonance compatibility: titanium is a non-paramagnetic metal, cobalt-chromium alloy, nickel-chromium alloy commonly used compared to magnetic resonance examination, resulting in minimal artifacts, the impact on the magnetic resonance examination is very small.In most cases, it is not necessary to remove the titanium denture during the head MRI.
