Annotation
Classification of tooth tissues pathology
1 - Caries and its complications
CARIES
a) superficial
b) average
c) deep
PULPITIS
a) acute (focal, diffusion)
b) chronic (fibrous, gangrenous, hypertrophic)
c) exacerbation of chronic pulpitis
PERIODONTITIS
a) acute
b) chronic (fibrous, granulating, granulomatous)
c) cystogranuloma
2 - Not carious damages of teeth.
1 Arisen in the period of an odontosis
a) enamel hypoplasia
b) enamel hyperplasia
c) fluorosis
d) anomalies of development and teething, change of their color
e) inherited disorders
2 The teething arising later
a) pigmentation of teeth and plaque
b) pathological erasability
c) wedge-shaped defect
d) erosion
e) enamel necrosis
e) injury of teeth
g) hyperesthesia
Position of the doctor and patient
The doctor on orthopedic reception owes 60% of operating time it being necessary work, and 40% sitting.
The patient can sit in direct positions, reclining, lying, depending on an arrangement of the tooth which is subject to treatment, but the ratio of the head and neck to a trunk at all provisions of the patient in a chair has to be in one plane. During the work on upper teeth the patient's case in a chair is given the situation which is a little cast away back, and teeth of an upper jaw have to be approximately at the level of a shoulder joint of the doctor. During the work on mandible teeth the patient sits almost vertically, his mandible approximately at the level of an elbow joint of the doctor. During the work with the assistant - the patient, reclining or lying, his head is located approximately at the level of "abdominal brain" of the doctor.
Classification of carious cavities by G.V. Black
1st class - cavities in natural fissures and dents of teeth
2nd class - cavities on approximal surfaces of chewing teeth
3 class - cavities on the approximal surfaces of the frontal teeth without breaking the incisal edge
4th class - cavities on approximate surfaces of frontal ones with violation of the cutting edge
5 class - cavities in the cervical area.
International classification of the location of cavities.
M - the medial surface of the crown is affected
О - the occlusal surface of the crown is affected
D - distal crown surface is affected
L - the lingual surface of the crown is affected
V - the vestibular surface of the crown is affected
For the purpose
of definition of extent of destruction of an occlusal surface of teeth and the
choice of a design of a prosthesis it is reasonable to use an index of
destruction of an occlusal surface of tooth - Tooth
Occlusal
Surface Failure Index (TOSFI) (by V. Yu. Milikevich, 1984). All area of
an occlusal surface of tooth is taken for unit (100%)
TOSFI = 0,2-0,4 - is applied by seals
TOSFI = 0,4-0,6 - indirect fillings (tabs)
TOSFI = 0,6-0,8 - sealing with the subsequent covering a crown
TOSFI more than 0,8 - pin constructions.