Top 15 Reasons behind Tooth Extraction

Tooth extraction is mostly the last step in dentistry. Dentists always try to restore your tooth either by simple "Amalgam Restorations" or comperatively complicated and costly "Root Canal Treatment". Here I have got top 15 reasons which can make you take appointment of your Dental Sugeon.

1) Periodontal diseases.
2) Pulp disease.
3) Caries.
4) Apical disease.
5) Prosthodontic treatment.
6) Orthodontic treatment.
7) Impacted tooth.
8) Supernumery tooth.
9) Tooth in line of fracture.
10) Bony pathology.
11) Root fragments.
12) Focal sepsis.
13) Esthetics.
14) Teeth prior to Irradiation.
15) Economic Consideration.

Mechanical Principles of Elevators used in Dentistry

Elevators are stainless steel instrument used in dentistry during tooth extraction. There are three mechanical principles which are applied to increase their mechanical advantage.

a) Lever Principle
b) Wedge Principle
c) Wheel and Axle Principle

Lever Principle: Try to remember your physics classes. You must have studied about types of levers. So the elevators used here are lever of first class, which has fulcrum in between the load and effort. The effort arm is longer than the load arm to increase the mechanical advantage. While extracting tooth controlled force is delivered in predetermined direction.

Wedge Principle: Remember the shape of "wedges" used in conservative dentistry. In this principle elevators having wedge shaped tips are used to split, expand or elevate the alveolar bone prior to tooth extraction.

Wheel and Axle Principle: It is modified form of lever. Here the effort is applied at circumference of the wheel which in turn rotates the axle of the instrument so that weight (tooth) can be lifted.

Hope, now you know how your elevators work, but I don't think elevators of your building work likewise!!

Absolute Containdications of Exodontia

Absolute contraindications include systemic diseases in uncontrolled state. No attempt should be made by the oral surgeon to extract tooth in such patients. These contraindications include:-

a) Uncontrolled Diabetes.
b) Uncontrolled Cardiac Problems.
c) Leukemia.
d) Renal Failure.
e) Liver disorders.

Exodontia Definition : According To Geoffrey L. Howe

According to Geoffrey L. Howe:-

"Idle tooth extraction is the painless removal of the whole tooth, or tooth root with minimal trauma to the investing tissues, so that wound heals uneventfully and no post operative prosthetic problem is created".