Compound-jam post-resection denture

FIELD: medicine; orthopedics.

SUBSTANCE: compound-jam post-resection denture can be used for making compound-jam prosthetic appliances for patients having wide defects of tissues of jam-face area. Denture is made in form of removable construction which has fixing, substituting and hollow sealing parts. Groove is made additionally in denture which groove locates onto top surface of sealing part. There is also channel passing through denture which has input being made inside the groove. Output of channel is disposed between second pre-molar and first pre-molar inside interior to provide muscular retention of denture. Bottom of the groove is made to have inclination to input of channel.

EFFECT: possibility of self-release of liquid stored onto top part of sealing part of denture.

1 dwg

 

The invention relates to medicine, section of orthopedic dentistry and can be used to hold a hard-maxillofacial prosthetics patients with extensive tissue defects of the maxillofacial area.

The existing design of the prosthesis include the manufacture of fixing, replacing, hollow obtenerse parts. Facing the prosthetic bed surface last repeats its relief and improves fixation of difficult-jaw prosthesis. When applying the prosthesis is the separation of the oral cavity from the nasal cavity [1].

The disadvantages of these structures lies in the fact that on the upper surface obtenerse part of the prosthesis is accumulated mucus, cells desquamated epithelium, tear fluid, providing irritant effect on the mucous membrane, which leads to its inflammation. Violation of local immunity in patients with extensive tissue defects of the maxillofacial area, optimum temperature, humidity, the presence of a nutrient substrate create favorable conditions for the development of yeast-like fungi, this leads to protracted nature of the inflammatory process, this increases the risk of inflammatory lesions of the upper respiratory tract [2]. Therefore, the patient should periodically remove the prosthesis in order to conduct hygienic PR is dures, that is not always possible.

We first proposed the design of hard-jaw prosthesis, enabling independent of the outflow of fluid that collects on the upper surface obtenerse part of the prosthesis, due to additional groove on the upper surface obtenerse parts connected by a channel with a hole in the undercut for muscle retention - these additional structural elements play the role of a functional valve.

The proposed construction is hard-jaw prosthesis shown in the drawing,

where 1 - fixing part;

2 - replacement part;

3 - hollow obtenida part;

4 - groove;

5 - channel;

6 - entrance channel;

7 - channel output.

On the upper surface obtenerse part of the hard-jaw prosthesis is located in the groove 4, accumulated there, the liquid flows through the inlet channel 6 channel 5, further channel through its outlet 7 located between the second premolar and the first molar in the undercut for muscle retention in the oral cavity for better outflow of fluid from the groove in the channel, the bottom of the groove has a bias to its entrance, talking and chewing, because there is a difference between the pressure in the oral cavity and the pressure in the cavity of the defect, which also contributes to the outflow of fluid.

The patient can use the prosthesis during the day, removing it only for the night.

The advantage of the presented design is the convenience in use, associated with a reduction in the number of hygienic procedures and simplification.

Studies have shown that it is difficult-jaw prosthesis using alterimage prosthesis with a functional valve for replacement of extensive defects of the tissues of the maxillofacial region improves the patient's quality of life, prevents inflammation in the mucous membrane, reduces the risk of damage from inflammation of the upper respiratory tract.

Sources of information

1. V.N. trezubov, A.S. Shcherbakov, Mishnev L.M. Prosthetic dentistry. SPb, 2001.

2. Borovsky E.V., Ivanov V.S., Maximov, Y.M., L. Maximov. Therapeutic dentistry. M., 2001.

Sonochemistry post-resection prosthesis made in a removable design, with fixing, replacing, hollow obtenerse part, characterized in that it additionally made a groove located on the top surface obtenerse part, and a channel passing inside of the prosthesis, the entrance to which is located within the recessed groove, and the output between the second premolar and the first molar in the undercut for muscle retention of the prosthesis, and the bottom of the groove is made with a slope to the entrance of the channel.



 

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1 tbl, 3 ex

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