Paediatric dentistry
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Transcript of Paediatric dentistry
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Paediatric dentistryPaediatric dentistry
Phantom coursePhantom course
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Tapes of mineralization temporary teeth in antenatal period, weeks (Vinogradova T.F.).
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8 years and 9 mouth
9 years and 9 mouth
10 years and 9 mouth
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Fig. 26. Follicle 35, in which not yet started process of mineralization, stay between roots 75. It is a round form, limited
from spongy liquid of body of jaw by cortical plate.
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Fig. 28. Prolonged mineralization of occlusual tuberculos 45.
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Fig.15 45 is cutting. Its root is forming on 2/3. Roots chanal very wide, sprout zone is limited by cortical plate.
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TeethMineralization of
crown, mouth of life
To cut of teeth,Mouth of life
І 1-2 6-8
II 3-4 8-12
III 5-9 16-20
IV 6 12-16
V 12 22-30
Table.1 Evolution of temporary teeth(Homenko L.О., 1993)
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Таб.2 Етапи розвитку кореневої системи тимчасових зубів
TeethTimes of forming
of rootsTime of start of rezorbtion
of roots and to 1/2 longs,
Time of full rezorbtion of
roots,
years years years
І 1,5 3,5-5 5,5-6,5
II 2 4-5 5-7
III 4-5 6-7 8-9
IV 3-4 5-6 8-9
V 4 6-7 8,5-9
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Таб.3 Periods of forming of permanent teeth (Хоменко Л.О., 1993)
Teeth Period of forming of follicle
Starting of mineralization
Periods of cutting,years
Finished of Forming of
roots,years
1 8 mouth. intranatal development.
6 mouth 6-8 10
2 8 mouth. intranatal development.
9 mouth 7-9 10
3 8 mouth. intranatal development.
6 mouth 10-12 13
4 2 years 2,5 years 9-10 12
5 3 years 3,5 years 10-11 12
6 6 mouth. intranatal development.
9 mouth. intranatal development.
6 10-11
7 3 years 3,5 years 12-13 15
8 4-5 years 6 years variable variable
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Fig.12 Forming of root 46. Roots almost come to normal long, but roots to stay yet very wide. Stage of not formed apex of root.
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Fig.14 Crown 45 calcified full. Forming of neck of tooth. Folicle 45 to become longer.
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Fig.15 45 is cuted. Root formed on 2/3. Root chanal very wide, sprout zone is limited by cortical plate.
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Fig. 48. Roots 37 is normal long, but chanal is very wide. Apical open is wide —period of reformatting apex.
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Fig. 49. Root chanals 47 has different wide: bigger near crown of tooth and smaller near apexes. Period of not closed apex.
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Fig.21 Roots of temporary 52, 51, 61, 62 by comparison with permanent teeth are short, cavity of teeth and root chanals are
wide.
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Fig..20. Roots 75 short by comparison with permanent teeth , wide
disperse in sides. Begin their rezorbtion after start to grow of folicle 35.
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Fig. 58. Full rezorbtion of roots of temporary teeth.
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Fig.50 Medial root 75 desorbed. II type of rezorbtion at Vinogradova Т.F.
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Fig. 56 Roots 64 desorbed.
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Fig. 222. Big part of destruction of bony fabric near apexes of roots. In result of inflammation process in periodont 85 resorbted part of
cortical plate of folicle 45.
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