Script trial video:
It is common.
Scan code to enter relevant courses
1. Type 1: nest hole classification (make clear the opponent first, know yourself and your enemy, then you will be invincible in all battles)
G. V. black classification:
2 the second method: cavity preparation
(find out the origin of the rules and techniques, connect the weapons and defeat the enemy invisibly)
Step by step analysis:
1. Principle of cavity preparation: modern minimally invasive technology is the first, only caries is removed, and mass basis (healthy dentin) is guaranteed as far as possible
2. Tools for hole preparation:
(I'll teach you how to choose weapons. If you want to do good work, you must first sharpen them!)
1. Rotary (mobile phone, needle)
Mobile phone: high speed and low speed, pneumatic and electric
High speed hole preparation, low speed corrosion removal, electric is better than pneumatic
Needle: low speed needle to remove corrosion, high speed needle to prepare hole
A decaying (low speed)
1. Tungsten steel needle (round head is recommended, cooling is required for heat production)
2. Carborundum needle (cooling is required for heat production)
3. Ceramic turning pin (advantages: small heat production, high cutting efficiency; disadvantages: high cost)
4. Plastic needle (Intelligent needle, can only remove soft tissue, near the pulp can avoid the accidental penetration)
B spare hole (high speed):
Carborundum needle, tungsten steel needle
2. Manual (scraper, enamel chisel)
3. Optional instruments available
(e.g. sand blasting, ultrasonic working tip)
Actual combat (melee): decaying
How much carious tissue should be removed?
A: remove the infected dentin and retain the dentin affected by caries.
Plaque, bacterial invasion area and damage area should be removed;
In clinical practice, hardness is often used as the standard for removal;
The color of the transparent area is deep, and it also belongs to the removal range if the color is taken as the standard clinically;
How to remove the infected dentin and retain the caries affected dentin?
A: use caries indicator
Usage:
Dip the caries indicator into the cavity with a brush, wait for 10-20 seconds, and then wash it with a water gun. If there is any staining, it is proved that there are still bacteria and the caries is not cleaned. Use 1:1 electric motor mobile phone, low-speed tungsten steel car needle, slow down, a little bit of corrosion. Then apply the caries indicator again. If there is any staining, then remove the decay. Repeat until the infected dentin is removed.
Xiaobian said
"Direct method - composite resin restoration technology of posterior teeth" is a summary of guohongboli teachers after ten years of teaching.
No matter you are Xiaobai or used for cultivation, I hope you will cherish the achievements of teachers' work. It's not easy to meet the secret script of conscience technology~
Ten years of wind and frost, ten years of rain, South swallow flying in front of the door.
One day and another, the garden is full of peaches and plums~
Note: the individual video teaching course (without learning mode) has been launched, and you can watch the whole content immediately after purchase.
Scan learning ↑
Click below to read the original text to enter the posterior teeth resin repair manual~
To be careful