The main purpose of making the working model of fixed denture into a detachable model

The main purpose of making the working model of fixed denture into a detachable model is: the neck edge of fixed denture is tight and the contact is good.

Fixed denture is a prosthesis to repair one or several missing teeth in dentition. It is connected with abutments or implants prepared on both sides of the missing tooth by bonding or fixing devices to restore the anatomical shape and physiological function of the missing tooth. Because this kind of prosthesis cannot be taken and worn by the patient himself, it is called fixed denture for short. Because its structure is similar to a bridge, it is also called a fixed bridge.

Fixed denture is based on the natural teeth on one or both sides of the edentulous area, and various types of retainers are made on the abutment, and the edentulous area is used as a bridge, which is connected into a whole through connectors, and finally fixed on the abutment with cement, so that patients can not take it by themselves. Because its structure is similar to a bridge, it is also called a fixed bridge.

Composition of fixed denture: Fixed denture consists of abutment, retainer, bridge and connector.

Oral cavity repair method:

1, fixed denture repair (fixed denture); Patients don't need to take it off by themselves, which is similar to real teeth and beautiful, and can be said to be an ideal restoration method. But its biggest disadvantage is that there are many incisor tissues.

2, removable denture repair (removable denture, complete denture, etc.). ); Its advantages are wide application range, little abrasion or damage to the tooth tissue of the remaining teeth, and low price. Its disadvantages are that the base is heavy, the foreign body feels heavy, which affects the appearance, and it will feel uncomfortable when worn for the first time, and the chewing function is also poor.

3. Implanted denture restoration (dental implant); It is a bionic implant made of pure titanium in the shape of an artificial root. It is implanted into the gum by surgery, and then the crown or bridge is repaired on it to restore the shape and function of the missing tooth. It not only has the advantages of fixed denture, but also avoids the disadvantage that fixed denture needs to polish abutment teeth.

4. Joint restoration of fixed activities; This kind of prosthesis combines the advantages of removable denture, such as stability, comfort, small size and wide indications, but it is relatively expensive.