Loading presentation...

Present Remotely

Send the link below via email or IM

Copy

Present to your audience

Start remote presentation

  • Invited audience members will follow you as you navigate and present
  • People invited to a presentation do not need a Prezi account
  • This link expires 10 minutes after you close the presentation
  • A maximum of 30 users can follow your presentation
  • Learn more about this feature in our knowledge base article

Do you really want to delete this prezi?

Neither you, nor the coeditors you shared it with will be able to recover it again.

DeleteCancel

Make your likes visible on Facebook?

Connect your Facebook account to Prezi and let your likes appear on your timeline.
You can change this under Settings & Account at any time.

No, thanks

odontogenesis

No description
by

nehal solaiman

on 16 December 2013

Comments (0)

Please log in to add your comment.

Report abuse

Transcript of odontogenesis

Odontogenesis
Over View
1-human tooth development time line.

2-Stages of development:
initiation
bud stage
cap stage
bell satge

3-Formation of:
hard tissue
nerves and blood vessels
periodontium

Definition

the complex process by which teeth form from embryonic cells ,grow and erupt into the mouth cavity.
-primary (deciduous teeth) start to develop
6-8
weeks IUL
-permanent teeth start to develop at the
20
week IUL
Stages of development
1- initiation stage:
Vestibular lamina
Dental lamina
2-Bud stage:
-periphery of dental lamina
-develops around
8
week IUL
3-Cap stage:
Dental papilla
Dental sac
4-bell stage:
stellate reticulum (early and late bell stages)
Periodontium
supporting structures of teeth and includes:
1-cementum
2-PDL
3-Gingiva
4-Alveolar bone
Nerves and vascular formation
1- nerves formation:
-starts during cap satge
-dentin formation
2-vascular formation:
-cap satge
*blood supply to the tooth decrease by age

Developmental Disturbances

Size
Number
form of the tooth
the tooth structure
Abnormalities of morphodifferentiation

abnormalities in the differentiation of dental lamina and tooth germs causes abnormalities in :
Abnormalities of histodifferentation

abnormalities in the formation of the dental hard structure causing disturbances in:
Developmental disturbances:
Hypodontia

absece of dental lamina due to infection , chemotherapy or syndroms
Hyperdontia
excessive but organized growth of dental lamina
Dilaceration
anormal angulation of the root dut to trauma to tooth bud
1-Ten Cate's Oral Histology, Nanci, Elsevier, 2013, page 135
2-http://www.slideshare.net/MPDODZ/odontogenesis-10680431
3-http://www.youtube.com/watch?v=zLiV-b1jS2
4-http://dentallecnotes.blogspot.com/2011/08/note-on-tooth-developmentodontogenesisw.
Odontogenesis
presented by:
Nourhan Solaiman Ibrahim 5211289
Nouran Mahomoud Ibrahim 5211287
Noura Ali Ibrahim 5211285
References
Full transcript