development of teeth, eruption of teeth, anatomy of ... · relations between the roots of primary...
TRANSCRIPT
![Page 1: Development of teeth, eruption of teeth, anatomy of ... · Relations between the roots of primary teeth and the developing crowns of the permanent teeth during the functional stage](https://reader033.vdocuments.site/reader033/viewer/2022053115/6092deb029912a16d3727e4a/html5/thumbnails/1.jpg)
Development of teeth, eruption of teeth,
anatomy of primary teeth
Dr. Barta Adrienn
SE – Clinics of Orthodontics and Pediatric
Dentistry
![Page 2: Development of teeth, eruption of teeth, anatomy of ... · Relations between the roots of primary teeth and the developing crowns of the permanent teeth during the functional stage](https://reader033.vdocuments.site/reader033/viewer/2022053115/6092deb029912a16d3727e4a/html5/thumbnails/2.jpg)
Development of teeth
7 weeks old embryo
![Page 3: Development of teeth, eruption of teeth, anatomy of ... · Relations between the roots of primary teeth and the developing crowns of the permanent teeth during the functional stage](https://reader033.vdocuments.site/reader033/viewer/2022053115/6092deb029912a16d3727e4a/html5/thumbnails/3.jpg)
Development of teeth
• Induction (6th - 7th weeks) – Initiation stage – Dental lamina
• Proliferation: – Bud stage (8th week) – Cap stage (9th – 10th weeks)
• Histodifferentiation – Bell stage (enamel organ) (11th –12th weeks) – Dental germ
• Calcification (maturation) – Enamel – Dentin
• Eruption – Root (Hertwig epithelial seath)
![Page 4: Development of teeth, eruption of teeth, anatomy of ... · Relations between the roots of primary teeth and the developing crowns of the permanent teeth during the functional stage](https://reader033.vdocuments.site/reader033/viewer/2022053115/6092deb029912a16d3727e4a/html5/thumbnails/4.jpg)
Development of teeth
1. Dental lamina
2. Bud-shape
4.Bell-shape
3. Cap-shape
5. Dental germ
![Page 5: Development of teeth, eruption of teeth, anatomy of ... · Relations between the roots of primary teeth and the developing crowns of the permanent teeth during the functional stage](https://reader033.vdocuments.site/reader033/viewer/2022053115/6092deb029912a16d3727e4a/html5/thumbnails/5.jpg)
Development of teeth
![Page 6: Development of teeth, eruption of teeth, anatomy of ... · Relations between the roots of primary teeth and the developing crowns of the permanent teeth during the functional stage](https://reader033.vdocuments.site/reader033/viewer/2022053115/6092deb029912a16d3727e4a/html5/thumbnails/6.jpg)
Development of teeth
![Page 7: Development of teeth, eruption of teeth, anatomy of ... · Relations between the roots of primary teeth and the developing crowns of the permanent teeth during the functional stage](https://reader033.vdocuments.site/reader033/viewer/2022053115/6092deb029912a16d3727e4a/html5/thumbnails/7.jpg)
Development of teeth
![Page 8: Development of teeth, eruption of teeth, anatomy of ... · Relations between the roots of primary teeth and the developing crowns of the permanent teeth during the functional stage](https://reader033.vdocuments.site/reader033/viewer/2022053115/6092deb029912a16d3727e4a/html5/thumbnails/8.jpg)
Development of teeth
Development and eruption of lower primary incisor and its replacement by the permanent successor
![Page 9: Development of teeth, eruption of teeth, anatomy of ... · Relations between the roots of primary teeth and the developing crowns of the permanent teeth during the functional stage](https://reader033.vdocuments.site/reader033/viewer/2022053115/6092deb029912a16d3727e4a/html5/thumbnails/9.jpg)
Development of teeth
The reduced enamel
epithelium fused with the
oral epithelium lining the
oral cavity
Schematic presentation of histologic
changes which accompany tooth
eruption
![Page 10: Development of teeth, eruption of teeth, anatomy of ... · Relations between the roots of primary teeth and the developing crowns of the permanent teeth during the functional stage](https://reader033.vdocuments.site/reader033/viewer/2022053115/6092deb029912a16d3727e4a/html5/thumbnails/10.jpg)
Development of teeth
• Enamel organ enamel (epithelial tissue)
• Dental papilla dentin, pulp (connective
tissue)
• Dental sac cementum, periodontal ligaments,
alveolar bone
(connective tissue)
Dental hard tissues
![Page 11: Development of teeth, eruption of teeth, anatomy of ... · Relations between the roots of primary teeth and the developing crowns of the permanent teeth during the functional stage](https://reader033.vdocuments.site/reader033/viewer/2022053115/6092deb029912a16d3727e4a/html5/thumbnails/11.jpg)
Development of teeth
The chronology of mineralization of primary teeth
![Page 12: Development of teeth, eruption of teeth, anatomy of ... · Relations between the roots of primary teeth and the developing crowns of the permanent teeth during the functional stage](https://reader033.vdocuments.site/reader033/viewer/2022053115/6092deb029912a16d3727e4a/html5/thumbnails/12.jpg)
Development of teeth
The chronology of mineralization of permanent teeth
![Page 13: Development of teeth, eruption of teeth, anatomy of ... · Relations between the roots of primary teeth and the developing crowns of the permanent teeth during the functional stage](https://reader033.vdocuments.site/reader033/viewer/2022053115/6092deb029912a16d3727e4a/html5/thumbnails/13.jpg)
Development of teeth
![Page 14: Development of teeth, eruption of teeth, anatomy of ... · Relations between the roots of primary teeth and the developing crowns of the permanent teeth during the functional stage](https://reader033.vdocuments.site/reader033/viewer/2022053115/6092deb029912a16d3727e4a/html5/thumbnails/14.jpg)
Eruption
• Primary teeth (6 month – 2.5 year) – I, II, IV, III, V
• Permanent teeth (6 year – 12 year) – 6, 1, 2, 4, 5, 3, 7
– Dentitio praecox (too early)
– Dentitio tarda (too late)
– Dentito difficilis (difficult eruption)
![Page 15: Development of teeth, eruption of teeth, anatomy of ... · Relations between the roots of primary teeth and the developing crowns of the permanent teeth during the functional stage](https://reader033.vdocuments.site/reader033/viewer/2022053115/6092deb029912a16d3727e4a/html5/thumbnails/15.jpg)
Eruption
![Page 16: Development of teeth, eruption of teeth, anatomy of ... · Relations between the roots of primary teeth and the developing crowns of the permanent teeth during the functional stage](https://reader033.vdocuments.site/reader033/viewer/2022053115/6092deb029912a16d3727e4a/html5/thumbnails/16.jpg)
Eruption
The eruption of primary teeth is accompanied by the development of the alveolar processes with considerable increase in facial height
At birth:
The gum pads are low, slightly lobulated
and the palatal vault is flat; the mandible
is retruded
![Page 17: Development of teeth, eruption of teeth, anatomy of ... · Relations between the roots of primary teeth and the developing crowns of the permanent teeth during the functional stage](https://reader033.vdocuments.site/reader033/viewer/2022053115/6092deb029912a16d3727e4a/html5/thumbnails/17.jpg)
Eruption
Relations between the roots of primary teeth and the
developing crowns of the permanent teeth during the
functional stage of the primary dentition
![Page 18: Development of teeth, eruption of teeth, anatomy of ... · Relations between the roots of primary teeth and the developing crowns of the permanent teeth during the functional stage](https://reader033.vdocuments.site/reader033/viewer/2022053115/6092deb029912a16d3727e4a/html5/thumbnails/18.jpg)
Eruption
When there is a mesial step in the terminal plane
of the primary dentition, the permanent molars
may erupt directly into normal occlusion
If the primary dental arches end in the same vertical plane, the
permanent molars will erupt into cusp-to-cusp relation
![Page 19: Development of teeth, eruption of teeth, anatomy of ... · Relations between the roots of primary teeth and the developing crowns of the permanent teeth during the functional stage](https://reader033.vdocuments.site/reader033/viewer/2022053115/6092deb029912a16d3727e4a/html5/thumbnails/19.jpg)
Eruption
The permanent upper incisors are more labially inclined than their
primary predessesors.
Consequently, the dental arch becomes wider and longer
![Page 20: Development of teeth, eruption of teeth, anatomy of ... · Relations between the roots of primary teeth and the developing crowns of the permanent teeth during the functional stage](https://reader033.vdocuments.site/reader033/viewer/2022053115/6092deb029912a16d3727e4a/html5/thumbnails/20.jpg)
Eruption
![Page 21: Development of teeth, eruption of teeth, anatomy of ... · Relations between the roots of primary teeth and the developing crowns of the permanent teeth during the functional stage](https://reader033.vdocuments.site/reader033/viewer/2022053115/6092deb029912a16d3727e4a/html5/thumbnails/21.jpg)
Eruption
The eruption of the permanent teeth is accompanied by considerable vertical growth of the alveolar processes
![Page 22: Development of teeth, eruption of teeth, anatomy of ... · Relations between the roots of primary teeth and the developing crowns of the permanent teeth during the functional stage](https://reader033.vdocuments.site/reader033/viewer/2022053115/6092deb029912a16d3727e4a/html5/thumbnails/22.jpg)
Dentition
Primary and permanent dentition
![Page 23: Development of teeth, eruption of teeth, anatomy of ... · Relations between the roots of primary teeth and the developing crowns of the permanent teeth during the functional stage](https://reader033.vdocuments.site/reader033/viewer/2022053115/6092deb029912a16d3727e4a/html5/thumbnails/23.jpg)
Anatomy of primary teeth
![Page 24: Development of teeth, eruption of teeth, anatomy of ... · Relations between the roots of primary teeth and the developing crowns of the permanent teeth during the functional stage](https://reader033.vdocuments.site/reader033/viewer/2022053115/6092deb029912a16d3727e4a/html5/thumbnails/24.jpg)
Anatomy of primary teeth
First primary molars
54 84
![Page 25: Development of teeth, eruption of teeth, anatomy of ... · Relations between the roots of primary teeth and the developing crowns of the permanent teeth during the functional stage](https://reader033.vdocuments.site/reader033/viewer/2022053115/6092deb029912a16d3727e4a/html5/thumbnails/25.jpg)
Anatomy of primary teeth
Second primary molars
85 55
![Page 26: Development of teeth, eruption of teeth, anatomy of ... · Relations between the roots of primary teeth and the developing crowns of the permanent teeth during the functional stage](https://reader033.vdocuments.site/reader033/viewer/2022053115/6092deb029912a16d3727e4a/html5/thumbnails/26.jpg)
Anatomy of primary teeth
The teeth 54 and 55
![Page 27: Development of teeth, eruption of teeth, anatomy of ... · Relations between the roots of primary teeth and the developing crowns of the permanent teeth during the functional stage](https://reader033.vdocuments.site/reader033/viewer/2022053115/6092deb029912a16d3727e4a/html5/thumbnails/27.jpg)
Anatomy of primary teeth
Attrition of primary teeth
![Page 28: Development of teeth, eruption of teeth, anatomy of ... · Relations between the roots of primary teeth and the developing crowns of the permanent teeth during the functional stage](https://reader033.vdocuments.site/reader033/viewer/2022053115/6092deb029912a16d3727e4a/html5/thumbnails/28.jpg)
Anatomy of primary teeth
• Occlusal wear of primary teeth (tipical among people who exist on coarse diet)
![Page 29: Development of teeth, eruption of teeth, anatomy of ... · Relations between the roots of primary teeth and the developing crowns of the permanent teeth during the functional stage](https://reader033.vdocuments.site/reader033/viewer/2022053115/6092deb029912a16d3727e4a/html5/thumbnails/29.jpg)
Anatomy of primary teeth
• Pulp chamber of primary and permanent molars
![Page 30: Development of teeth, eruption of teeth, anatomy of ... · Relations between the roots of primary teeth and the developing crowns of the permanent teeth during the functional stage](https://reader033.vdocuments.site/reader033/viewer/2022053115/6092deb029912a16d3727e4a/html5/thumbnails/30.jpg)
Anatomy of primary teeth
Difference between the primary and permanent teeth (clinical examination) of primary and permanent molars
Form
Size
Color
Attrition
Mobility
Count!!
![Page 31: Development of teeth, eruption of teeth, anatomy of ... · Relations between the roots of primary teeth and the developing crowns of the permanent teeth during the functional stage](https://reader033.vdocuments.site/reader033/viewer/2022053115/6092deb029912a16d3727e4a/html5/thumbnails/31.jpg)
Root resorption
![Page 32: Development of teeth, eruption of teeth, anatomy of ... · Relations between the roots of primary teeth and the developing crowns of the permanent teeth during the functional stage](https://reader033.vdocuments.site/reader033/viewer/2022053115/6092deb029912a16d3727e4a/html5/thumbnails/32.jpg)
Thank you!