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Anatomical And MorphologicalAnatomical And Morphological
Difference between Primary AndDifference between Primary And
Perm...
INTRODUCTION:INTRODUCTION:
• A. The human dentition is termed heterodont
• In comparison, a homodont dentition is one in w...
• 1. Deciduous dentition –
Eruption : about six months to two years of age
No. of teeth presents : 20
Other non-scientific...
Dentition Periods and SuccedaneousDentition Periods and Succedaneous
Teeth:Teeth:
Three periods of dentition, since the de...
Morphological & Anatomical DifferenceMorphological & Anatomical Difference
b/w Primary & Permanent Toothb/w Primary & Perm...
Primary Teeth
- Thinner enamel and
dentin layers.
- Enamel rods in the
cervical area directed
Occlusally.
- Broad and flat...
Primary Teeth
- Prominent mesio-buccal
cervical bulge seen in
primary molars.
- Incisors have no
developmental grooves
or ...
Primary Teeth
- Mandibular Incisors-
central is symmetrically
flat when viewed from
buccal, lateral has a more
rounded DI ...
Primary Teeth
-Maxillary 1st Molar-
unique look, 3 cusps
-Mandibular 1st Molar 4
cusps, transverse ridge
dividing occlusal...
Primary Teeth
Maxillary 2nd Molar –
resembles permanent
maxillary first molar but
smaller.
Mandibular 2nd Molar-
resembles...
ROOTROOT Permanent TeethPrimary Teeth
PULPPULP Primary Teeth Permanent Teeth
1. Pulp Chamber Larger Smaller
2. Root Canals More Ribbon like
(hour glass appearan...
Other Key PointsOther Key Points
Primary Teeth
- Develops directly from
dental lamina.
- Premolars –Absent
- Relation b/w ...
Other Key PointsOther Key Points
Primary Teeth
- More prone to acid
attack, thus rapidly
demineralised to dental
caries.
-...
CONCLUSIONCONCLUSION
• As per pedodontics point of view the things
that need to be remembered are-
• 1. enamel and dentin ...
ReferencesReferences
Thank
you
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Difference between primary and permanent teeth

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The presentation features the basic difference between primary and permanent dentition. The differences are tabulated under the headings of crown, roor and pulp.

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Difference between primary and permanent teeth

  1. 1. Anatomical And MorphologicalAnatomical And Morphological Difference between Primary AndDifference between Primary And Permanent teethPermanent teeth Divyashree ChoubeyDivyashree Choubey Rambaboo VermaRambaboo Verma B.D.S Final YrB.D.S Final Yr Primary Permanent Department of PedodonticsDepartment of Pedodontics Govt. College of Dentistry,Govt. College of Dentistry,
  2. 2. INTRODUCTION:INTRODUCTION: • A. The human dentition is termed heterodont • In comparison, a homodont dentition is one in which all of the teeth are the same in form and type. This sort of dentition is found in some of the lower vertebrates. • B. Sets of teeth: Diphyodont (Human): 2 sets of teeth – 1. Decidous and 2. Permanent. Monophyodont Polyphyodont
  3. 3. • 1. Deciduous dentition – Eruption : about six months to two years of age No. of teeth presents : 20 Other non-scientific name : "milk" teeth/" baby" teeth/ "temporary" teeth. • 2. Permanent dentition – Eruption: from 6-21 years of age. No. of teeth presents: 32
  4. 4. Dentition Periods and SuccedaneousDentition Periods and Succedaneous Teeth:Teeth: Three periods of dentition, since the deciduous and permanent dentitions overlap in time. These periods are summarized in the following manner: 1. Primary dentition period – 2. Mixed dentition period – 3. Permanent dentition Period-
  5. 5. Morphological & Anatomical DifferenceMorphological & Anatomical Difference b/w Primary & Permanent Toothb/w Primary & Permanent Tooth Primary Teeth Crown: - Shorter. - Narrow Occlusal table. - Constricted in cervical portion. Permanent Teeth Crown: - Bigger - Broad Occlusal table. - Cervical constriction is not well marked.
  6. 6. Primary Teeth - Thinner enamel and dentin layers. - Enamel rods in the cervical area directed Occlusally. - Broad and flat contacts. - Color is usually lighter. Permanent Teeth - Thick enamel and dentin layer. - Enamel rod in the cervical area directed Gingivally. - Point contacts. - Color is much darker.
  7. 7. Primary Teeth - Prominent mesio-buccal cervical bulge seen in primary molars. - Incisors have no developmental grooves or mammelons. Permanent Teeth - Less prominent cervical bulge seen in permanent molars. - Incisors have developmental grooves or mamelons on newly erupted teeth
  8. 8. Primary Teeth - Mandibular Incisors- central is symmetrically flat when viewed from buccal, lateral has a more rounded DI angle Maxillary Incisors- central is only tooth that has a greater width than height Permanent Teeth - Mandibular Incisors- Narrowest teeth mesio- distally - Maxillary Incisors- Widest teeth mesiodistally having two developmental
  9. 9. Primary Teeth -Maxillary 1st Molar- unique look, 3 cusps -Mandibular 1st Molar 4 cusps, transverse ridge dividing occlusal surface -Canines- maxillary is long and sharp, mandibular has similar shape but smaller. Permanent Teeth -Maxillary 1st Molar- Roughly Trapezoidal, MB & DB are two Buccal cusps. ML & DL line angle obtuse. Buccal developmental groov divides the two Buccal cusp. -Mandibular 1st Molar- 5 cusps, the tip of lingual cusp are higher then other. - -Canines- maxillary is also sharp and long , the mesial slope is shorter then the distal slope
  10. 10. Primary Teeth Maxillary 2nd Molar – resembles permanent maxillary first molar but smaller. Mandibular 2nd Molar- resembles permanent mandibular first molar but smaller. Permanent Teeth Maxillary 2nd Molar 5th cusp is less evident Both distal cusp are less developed and crown is smaller in dimension Mandibular 2nd Molar Crown is shorter and narrower then the 1st molar. Buccal developmental groove b/w MB &DB. Root is distally tilted.
  11. 11. ROOTROOT Permanent TeethPrimary Teeth
  12. 12. PULPPULP Primary Teeth Permanent Teeth 1. Pulp Chamber Larger Smaller 2. Root Canals More Ribbon like (hour glass appearance) Well defined with less branching 3. Accessory Canals Present May be Absent 4. Cellularity and Vascularity High degree Less degree 5. Potential High potential Low potential
  13. 13. Other Key PointsOther Key Points Primary Teeth - Develops directly from dental lamina. - Premolars –Absent - Relation b/w upper and lower teeth is tooth-to tooth relation (Edge to edge). - Mesiodistal diameter of crown is more then cervico incisal length. Permanent Teeth - Develops as lingual or distal extension of dental lamina. - Premolars-Present - Intercuspation relation. - Cervico incisal length is more then the mesiodistal dimension.
  14. 14. Other Key PointsOther Key Points Primary Teeth - More prone to acid attack, thus rapidly demineralised to dental caries. - Neonatal lines are seen. - Dentin is less mineralised . - Lamina dura is relatively Permanent Teeth - Less prone to caries attack. - Neonatal lines is not seen in Permanent teeth except in Permanent 1st molars. - Dentin is more mineralised. - Lamina dura is relatively thin.
  15. 15. CONCLUSIONCONCLUSION • As per pedodontics point of view the things that need to be remembered are- • 1. enamel and dentin in child patient are thinner as compaired to adult. • 2.pulp chamber are wider in children. • 3.pulp horn are more prominent. • 4.smaller root trunk. • 5.ribbon like root canal.
  16. 16. ReferencesReferences
  17. 17. Thank you

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