About porcelain veneer
Porcelain veneer is the most minimally invasive restoration method in the field of aesthetic bonding restoration, which is similar to the feeling of female nail painting. It is necessary to polish a thin layer of enamel on the tooth surface, which is beneficial to the firm bonding between porcelain veneer and tooth surface. The reason why it is minimally invasive is that compared with all-ceramic crowns, there are very few molars with porcelain veneers, including 0.3-0.5mm porcelain veneers and 0.5-0.8 mm cast porcelain veneers. Porcelain veneers and cast porcelain veneers are professional categories, and people do not need to understand them. Doctors need to master their respective indications according to the patient's dental conditions.
In recent years, due to the further expansion of marketization and the intervention of capital, porcelain veneers in dentistry have also been valued and commercialized by them. The high-sounding words such as "6D relief nanocrystalline porcelain veneer" and "ice porcelain" make dentists laugh and cry. However, everything has advantages and disadvantages. At least, their commercial publicity has made more people know about the "commodity" of porcelain veneer, which is actually a good thing.
Porcelain veneer, in my opinion, actually does not belong to the treatment category in the dental field. Its existence is actually to solve people's growing demand for beautiful teeth, which is different from the demand for dentists such as toothache and tooth loss. After reading the answers to this question, most of them are patient introductions, and doctors' professional explanations are few, so taking the time to answer this question in detail is, after all, one of my main jobs.
First: What problems can porcelain veneer solve? What kind of people are suitable for making porcelain veneers?
The strongest function of porcelain veneer is to change the color of teeth, followed by optimizing the arrangement and shape of teeth.
If you are not satisfied with the color of your teeth, and feel that your teeth are yellow, or even individual tetracycline teeth and dental fluorosis, this is the indication of porcelain veneering. Porcelain veneers cover teeth by choosing porcelain blocks with different permeability and colors, but their color coverage ability is limited.
If you feel that your teeth are not aligned, you want to change the color and do it neatly, then the problem comes. Porcelain veneer can only optimize the arrangement and shape of teeth. If the dentition is particularly crowded, this porcelain veneer can't solve it. You need to align the dentition through orthodontics first, and then repair it with porcelain veneers. If it is very slightly crowded or poorly shaped, such as "melon seeds" and "front teeth", it is also a perfect indication of porcelain veneering. Whether it is necessary to correct teeth first requires professional doctors to evaluate.
Second: Will porcelain veneers hurt teeth?
Porcelain veneer can be divided into three types: porcelain veneer, cast porcelain veneer and CAD/CAM cutting veneer. I have mentioned the basic molar amount above, and the molar amount will be prepared as needed within the range of 0.3-0.8 mm If the teeth are particularly dark and need white porcelain veneer, the molar amount will further increase, generally not exceeding 1 mm, and molars are irreversible, which is definitely not good from the perspective of preservation. But it won't do you any harm, which is the meaning of minimally invasive. The surface layer of human teeth is a hard layer of enamel, which is the hardest tissue in the human body and harder than your bones. Its composition is basically inorganic, without nerves and blood vessels. And the operating range of our porcelain veneer is within this thin layer of enamel. On the one hand, it will not harm the nerves of teeth and cause irreversible pain or pulpitis, on the other hand, it is beneficial to the bonding of porcelain veneers, because the most important thing for porcelain veneers is the bonding of enamel layer. If it exceeds this layer and reaches the dentin layer below, bonding will become difficult, technical sensitivity will be higher, and the veneer will be at risk of falling off. Why is the preparation amount of porcelain veneer in the range of 1mm? Because the lip glaze thickness of our front teeth is basically around 1 mm ... and then many people will ask, my enamel is gone when it is worn off. Won't it affect the teeth? Of course it will have an impact. For example, you can't chew hard things with your front teeth. It is also suggested to cut the apple into pieces, because the chewing power is actually very strong, and porcelain veneer is not as good as enamel after all, and there is a risk of porcelain collapse. But if you eat normally, it won't affect at all! Your life will not change, and you will probably become beautiful. Attention is "very likely", because improper choice is likely to be a disaster.
At present, there has been a technique of porcelain veneering without molars in clinic, which can't be called technique, because the technique is to grind teeth well, make veneers beautiful and stick veneers well. It's actually easier for doctors not to grind their teeth. Take the film directly, send it to the technician to do it, and then paste it with glue. I basically won't choose this method, because even the thinnest porcelain has a thickness, and the edge of 0.3mm is basically the limit. If it is directly attached to the tooth surface, it will inevitably form a overhang on the neck of the tooth. If it is not handled properly, it is easy to stimulate the gums. Because it is too problematic, it is easy to hang a plaque with steps. However, this technology is indeed used in clinic, including some literature reports. It's just that I personally don't need or deny the significance of this technology.
Third: Is porcelain veneering technically difficult?
The answer is very high. Any minimally invasive treatment actually contains a lot of technology and needs many doctors. Doctors who do well in aesthetics in the industry are also good in aesthetics to some extent. And aesthetics itself is a very high requirement. From photo shooting, model collection, aesthetic analysis and wax model design in the early stage, to tooth preparation (grinding teeth) under a magnifying glass or microscope, to communication between doctors and technicians, the production of technicians, and to the fine bonding treatment of rubber barriers in the oral cavity in the later stage, all of them reflect the technical content. This is much more difficult than making a crown!
The main technical links are as follows:
1. Patient cooperation: Doctors who do aesthetics need to take many large films with their cameras for your next aesthetic analysis. The arrangement of teeth and the color contrast of teeth before operation can all be reflected by photos.
2. Doctor's operation: tooth preparation and bonding. My own tooth preparation is done under the microscope, because the enamel is very thin and the amount of grinding teeth is very small, so it needs to be done more finely. The bonding process is better and more complicated, which requires the skilled cooperation of medical care. It often takes a whole afternoon to prepare a tooth and 20 veneers, and then a whole afternoon to bond them. Tired.
3. Production technicians:
Aesthetic effect, in addition to the operation of doctors, the production of technicians is very important. Even in the eyes of many of our cosmetic doctors, they are more important than us. What China lacks most is technicians! The overall level of technicians in China is still relatively weak in the world, among which there are naturally many excellent technicians, but the number is too small. Those who have cooperated can be counted with one hand, and everyone in the industry basically doesn't know them. In addition to being expensive, those top technicians naturally have high requirements for doctors. Doctors prepare bad teeth and give money to others, which will make them feel ashamed. Because these technicians don't lack jobs at all, we all have to brush our faces and sell human feelings. I want to say here that many people think that public hospitals are better than private hospitals, so they choose public hospitals as porcelain veneers. First of all, I'm not in the public hospital anymore. Such remarks will certainly be mistaken for putting in a good word for private hospitals. But to be honest, how to understand it depends on everyone. There is no shortage of good doctors in public hospitals, but the technicians in the technical room they reported are not doing very well. If the aesthetic requirements are not so high, they should be satisfied, but they can't make beautiful works. In private, there are many doctors who do great aesthetics in the industry. The technicians who cooperate with these doctors are basically personal studios. These people will not cooperate with public hospitals. Because of the high fees, public hospitals will definitely not bid for them. Therefore, those who have high aesthetic requirements should choose public hospitals carefully.
Fourth: What is the price of porcelain veneer? How much do you need to do?
The industry basically fluctuates from 3000+ to 10000+, but it needs to be reminded that good doctors charge high fees and good technicians charge high fees. How much do you need to do? Depending on the width of the smile and the number of teeth exposed when laughing, if the mouth is small, it may be 4 to 4 *** 16, and the mouth is 5 to 5 ***20. 1, 2 is not equal if it is handled locally according to the actual situation.
Fifth: About postoperative sensitivity.
Many patients who have finished porcelain veneering complain that their teeth are sensitive at first, and they are sour when they are cold and hot. This is because some dentin is exposed after tooth preparation, and there are dental nerves running through dentin, so there will be sensitive phenomena, which mostly occur after tooth preparation and before formal restoration. As for why there is dentin exposure? First of all, there may be too much preparation of teeth, which is probably a partial compromise to optimize the arrangement or shape of teeth, that is, to increase preparation at a certain position, thus exposing dentin. Experienced doctors may do some IDS (instant dentin sealing, technical terms need not be understood), thus reducing postoperative sensitivity. Of course, there is nothing wrong with not doing it. Secondly, it is also possible that tooth defects lead to dentin exposure, such as wedge-shaped defects in the neck of many people's teeth The third possibility is that doctors are inexperienced and grind their teeth too much. Whatever the reason, the sensitivity caused by porcelain veneer is slight and short-lived, and this sensitivity will gradually decrease until it disappears with the completion of veneer. Don't worry too much.
Finally, let's talk about the above case. In fact, this is a popular singer. Can you guess who this is?