As Confection spoon a dental auxiliary instrument is called. The tray is used to take an impression of the upper and lower jaw.
What is the confection spoon?
A ready-made spoon is a special instrument used by the dentist to take an impression of the upper and lower jaw. He will too Impression spoon or Impression tray called.
Dental impressions can be precisely positioned by using the instrument. A distinction must be made between individual and ready-made impression trays. In contrast to the individual spoons, the ready-made spoons do not adapt precisely to the patient's jaw. Instead, templates are used that are prefabricated and made of plastic or metal. They can be used once or several times.
In the case of ready-made spoons, it is also possible to adapt them precisely to the patient's individual anatomical structures using a distal plastic dam or a silicone stopper before taking an impression.
Shapes, types & types
Ready-made or impression spoons are available in different sizes. The different jaw sizes are taken into account. The design for the upper and lower jaw, a fully dentate, partially dentate or toothless jaw is also different. The various retention elements also play an important role.
Dentists also differentiate between a ready-made and an individual impression tray. While the ready-made tray is already prefabricated, the individualized impression tray is specially made by a dental technician, based on the individual requirements of the jaw. For this purpose, a preliminary print is first made with a ready-made spoon so that the dental technician can obtain a rough overview of the patient's jaw. He then uses this to make the individual impression tray. He can also take into account the patient's particular tooth characteristics.
Structure & functionality
Ready-made spoons are made from different materials. Most of them are ready-made stainless steel spoons. Such a device can be used permanently and is easy to clean. Other confection spoons are made of plastic.
Using an impression tray gives the impression material a balanced thickness. In this way, the accuracy of the impressions can be ensured. The special spoon is provided with plastic impression material for its use. The dentist places the ready-made spoon in the patient's mouth and presses it against the patient's teeth in order to obtain an impression of the jaw or dentition.
The retention elements in the tray ensure that the impression material remains inside the tray when it is removed. The impression tray is often equipped with perforations for this purpose. The impression material passes through this during the plastic phase. It is also possible to have a retentive edge through which the impression material can be held in the manufacturing tray.
Custom-made spoons are not suitable for taking impressions of difficult jaw conditions. In such cases they are used to make an individual impression tray. This has the advantage of being able to lean against the shape of the jaw.
Even when the exact precision of the impression is required, the confectionary spoons reach their limits. Customized trays must also be used for this purpose, as the impression material is applied in even layers. If there is an uneven layer thickness, there will be differences in the setting behavior, which will result in inaccuracies.
Ready-made spoons are primarily used to create situational models. These hold the patient's teeth in a plaster cast before therapy. Even if there is not enough time, an individualized impression tray is often not used. This can be, for example, repairing dentures that can be removed. The same applies to the production of dental projects on a smaller scale, such as individual crowns.
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The benefit for human dental health consists in making an impression with a ready-made spoon. The tray carries the impression material or the impression material so that the jaw and teeth can receive an impression from the dentist or orthodontist.
The impression is a dental work step. With the help of an impression, it is possible to make a negative form of a specific area of the body. These include a. the alveolar processes of the upper and lower jaw or an amputation stump. Then, by pouring certain materials such as plaster of paris, the area is created in a positive shape. This copy is also called the model.
The use of an impression tray is primarily useful for the production of dentures or a defective prosthesis. Diagnostics or the planning of a treatment are other useful areas of application.
With the help of the ready-made spoon, an impression of the dentition can be made so that dental crowns can find the correct bite. The instrument can also be helpful for filling larger teeth. After the impression, the result is recorded on plastic. For the dental technician, the replica of the dentition serves as a model.
Dentists divide the impressions that are made with the special spoon into three forms. These are the elastic-reversible imprint, the elastic-irreversible imprint and the rigid-irreversible imprint. The elastic-reversible impression shows an unstable behavior. Its shape also changes when it is warm. The elastic-irreversible impression has mobility even after the material has set. There are no more changes to its shape. The rigid, irreversible impression has no elasticity and can no longer be changed.
If a corresponding model has been made thanks to the impression tray, the dentist can also view the dentition himself and carry out the necessary adjustments for tooth crowns. The assembly spoon is also used by the orthodontist. He uses the instrument to identify and treat possible jaw misalignments.
