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Dental “Basics of Implantation Abutment Repair Operation”

1. Classification of implants
2. Classification by implant material:

Metals-pure titanium (surface treatment: acid treatment + surface hydroxyapatite)

Ceramics-alumina, zirconia, high density hydroxyapatite, silicon nitride, etc.

Composite planting material-pure titanium (inside) + ceramic (outside)

2.Classification by implant structure:

One stage-early implants, small diameter implants

Two-stage-implant + abutment (screw-retained, except for Become: plug-in)

Three-stage type-implant + (octagonal abutment, balanced abutment) + abutment integrated crown

Second, the basic composition of the implant

1. Implant + cover screw

Cover screw: The first operation, after the implant is embedded in the alveolar bone, is temporarily closed to prevent the hard and soft tissue from growing.

← Implant

← Cover screws

2. Healing abutment

During the second operation, it is temporarily docked with the head of the implant to promote the formation of beautiful and complete gum cuffs, also known as “mucosal expander”.

← Healing Abutment

3.Transfer lever

An accessory for accurately transferring the shape and position of the implant tip in the mouth to the working model.

← transfer lever

4.Alternatives

It can be kissed with the transfer rod and embedded in the working model. Express the shape and position of the implant head.

← Substitution

5. Finished abutment, angle abutment, bass, secondary processing accessories

Finished abutment and angle abutment: connect the substitute, grind in the laboratory, and perform denture repair on it.

basi, secondary processing accessories: connection replacement, personalized repair, can process s zirconia abutment, s metal abutment, s zirconia abutment crown, s metal abutment crown

← Finished Abutment

← Angle Abutment

← Retained Abutment

6.Retaining screws

Connect implant (replacement) and abutment (abutment crown).

Third, the concept of upper and lower institutions of implant restorations

1.Substructure

Refers to the part embedded in the body tissue, refers to the implant or implant.

2.Superstructure

Refers to the abutment of the implant and the structure of the restoration connected to it: crown, bridge, bracket, etc.

3.Intermediate structure

Refers to the accessories that connect the upper structure with the lower structure, such as balanced abutment and octagonal abutment.

Fourth, the impression

Impression method: s window-opening and s non-windowing

1. Window-opening mold: Use the window-opening tray and the transfer system with fixing screws to take the impression, which is called window-opening impression.

Method: First fix the transfer rod to the implant with fixing screws, try on the individual trays that open the window, and make sure that the fixing screws can pass through the window. Then place the tray containing the silicone rubber impression material in place in the mouth. After the impression material solidifies in about 4-5 minutes, loosen the fixing screw from the opening to completely dislocate the tray and remove the tray from the mouth. The transfer body is taken out of the mouth with the impression together with the fixing screw, and then a replacement body is installed in the impression. The replacement body is fixed on the transfer rod with the fixing screw, the artificial gum is beaten, and then the plaster model is poured. The window-type impression has high accuracy and is relatively troublesome to operate; moreover, it is more difficult to operate in the posterior area. At present, more than 95% of doctors use window-type impressions.

2. Non-windowed mold taking

Method: The transfer rod has an elastic structure, which can be directly fixed to the implant in a clamped form without the need for fixing screws; when the impression is taken, the closed tray containing the silicone rubber impression material is directly placed in the mouth. After the impression material is solidified, the tray is directly taken out of the mouth, and the transfer rod is taken out of the mouth. Plaster model. Non-windowed mold removal, the operation is relatively simple, and the accuracy is slightly lower.

1. Making artificial gums and perfusion working molds
2. The role of artificial gums

Artificial gums can accurately reflect the shape and location of the gingival tissue around the implant neck. It can be repeatedly worn from the model to help technicians check whether the restoration closely matches the replacement and determine the height of the metal ring on the neck and the position of the edge to ensure the accuracy of the position of the edge of the restoration. Beautiful and conducive to cleaning, improve the processing accuracy of the restoration, and provide convenience for technicians.

2. The process of making artificial gums

Check: whether the impression is clear and accurate, whether there is deformation of the mold, make sure that the transfer rod is not loose, and the substitute is tightly connected with the transfer rod.

Make artificial gum: Mix the artificial gum material with a mixing gun or manually, and then inject it around the substitute with a syringe. The injection height needs to be 3mm higher than the transfer rod (Objective: To ensure that the artificial gum can be retained by the substitute and ensure the model Accuracy), the injection range is near-to-medium, with the adjacent tooth as the boundary, and artificial gums cannot be injected into the adjacent tooth area; the lip and tongue cover the alveolar crest area, paying attention to the formation of a certain thickness at the edges. After the injection is completed, use a cotton swab soaked in alcohol, press gently on the artificial gum to form a flat surface, and then use a blade (or scissors) to trim the edge to form a 45 ° bevel to the edge of the lips to increase the stability of the artificial gum; , Forming the shape of the upper narrow and the lower wide (relative to the direction on the silicone rubber model, the opposite on the plaster model) to facilitate the removal of artificial gums.

↑ After the replacement body is mounted on the transfer rod, artificial gums are injected around the transfer rod and the replacement body.

Trim the artificial gum with a blade.

Working mold with artificial gums.

3.Perfusion working model

Use super anhydrite, strictly control the proportion of water and powder, and stir under vacuum.

Use gypsum oscillator to mold.

After about 40 minutes, separate the impression from the model.

Common Terms

1. Cuff:

2.Through the gum height:

3.Anti-rotation-H

4. Non-rotation-resistant-N

5.Mini-M

6.General-R

7.Wide neck-W

Seven, commonly used planting systems:

1. Korea-Aoyatai:

GS = TS: Mini (M), “Regular (R)

SS: Normal (R), “Wide Neck (W)

2. Korea-DIO:

Mini (M), “Regular (R)

3. Korea-Deng Teng:

Mini (M), “Regular (R)

4. Switzerland-ITI:

A–Gum level: Narrow neck, conventional (R), wide neck (W)

B–Bone level (Struthman): Mini (M), “Routine (R)

5. Sweden-Nobel:

Mini (M) ‚Regular (R) ƒ Wide neck (W)

6. Germany-Angels: There is only one type of abutment, which is universal.
7. Germany-Safe:

Mini (M) ‚Regular (R) ƒ Wide neck (W)

8. USA-3I:

Mini (M), “Regular (R)

9. the United States-ZIMMER (Jie Mei):

Mini (M) ‚Regular (R) ƒ Wide neck (W)

10. Germany-BEGO: temporarily not available.
11. United States-Baikang: temporarily not available.
12. France-Anduojian: temporarily.
13. Domestic Becomte: Same as Switzerland-ITI.

Various processing methods of implant abutment

1. Finished abutment (including: angle abutment)
2. Castable abutment: single anti-rotation abutment, bridge body rotation non-rotation-resistant abutment.
3. Zirconia abutment: basil + zirconia-anti-rotation
4. Personalized metal abutment-anti-rotation

5.Metal abutment crown-anti-rotation

6.Zirconia abutment integrated crown-anti-rotation

7.Planting bridge-non-rotation-resistant

8.Plant rod card-non-rotation resistant

※ Octagonal abutment and balanced abutment-to be continued.

※ Planting bridge and pole card-to be continued.