文档介绍：Extraction of Teeth
Shi Zongdao
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Extraction is a surgery
The extraction of teeth, however accomplished, is a surg treated for any disease with steroid
therapy may not have sufficient adrenal cortex secretion
to withstand the stress of an extraction without taking
additional steroids.
Contraindications:systemic diseases 2
6. Fever of unexplained origin is rarely cured and often is
worsened by extraction, . subacute bacterial
endocarditis would be complicated considerably by an
extraction.
7. Nephritis
8. Pregnancy: extraction is better to be done in the second
trimester. Menstruation: elective exodontia is not done
during the period because of less nervous stability and
greater tendency toward hemorrhage of all tissues.
9. Senility: greater care in overcoming a poor physiologic
response to surgery and a prolonged negative nitrogen
balance.
10. Psychoses and neuroses
Local contraindications
1. Acute infection with an uncontrolled cellulitis,
toxemia until adequate blood level of a specific
antibiotic had brought systemic factors under control
and the infection had become localized, the pus was
drained, and the infection had subsided to a chronic
state.
2. Acute pericoronitis
3. Acute infectious stomatitis
4. Malignant disease
5. Irradiated jaws may develop an acute radio-
osteomyelitis after extraction
special instruments for the extraction
The special instruments for the extraction of teeth and roots are forceps, elevators.
In special cases, where bone has to be removed, other instruments required such as chisels and mallet, burs, etc..
A very large variety of forceps and elevators have been devised.
A few well-selected instruments will suffice all hut very extraordinary cases.
Straight elevator
Physical characteristics
1. Lar