Podcast
Questions and Answers
What is the eruption sequence of deciduous teeth in the upper jaw?
What is the eruption sequence of deciduous teeth in the upper jaw?
- A, C, E, D, B
- E, B, D, C, A
- A, B, C, D, E (correct)
- E, D, C, B, A
What is the type of Primary First Molar tooth?
What is the type of Primary First Molar tooth?
- Four-cusp type with two buccal and two lingual cusps
- Four-cusp type with three buccal and one lingual cusp
- Five-cusp type with three buccal and two lingual cusps
- Three-cusp type with two buccal and one lingual cusps (correct)
What is the characteristic of the buccal surface of the Primary First Molar tooth?
What is the characteristic of the buccal surface of the Primary First Molar tooth?
- It is very smooth with little evidence of developmental groove (correct)
- It is convex towards the root
- It is concave towards the root
- It is very rough with evidence of developmental groove
What is the characteristic of the occlusal surface of the Primary First Molar tooth?
What is the characteristic of the occlusal surface of the Primary First Molar tooth?
What is the characteristic of the roots of the Primary First Molar tooth?
What is the characteristic of the roots of the Primary First Molar tooth?
What is the characteristic of the cervical line of the Primary First Molar tooth?
What is the characteristic of the cervical line of the Primary First Molar tooth?
What is the characteristic of the MB cusp of the Primary First Molar tooth?
What is the characteristic of the MB cusp of the Primary First Molar tooth?
What is the characteristic of the lingual aspect of the Primary First Molar tooth?
What is the characteristic of the lingual aspect of the Primary First Molar tooth?
What is the shape of the geometric outline of the maxillary second molar?
What is the shape of the geometric outline of the maxillary second molar?
What is the characteristic of the distal side of the crown?
What is the characteristic of the distal side of the crown?
Which roots are seen from the distal aspect?
Which roots are seen from the distal aspect?
What is the characteristic of the DB cusp?
What is the characteristic of the DB cusp?
How many supplemental grooves arise from the Mesial Triangular Fossa (MTF)?
How many supplemental grooves arise from the Mesial Triangular Fossa (MTF)?
What is the characteristic of the Developmental Groove (DG) that connects 3 fossae?
What is the characteristic of the Developmental Groove (DG) that connects 3 fossae?
How many pits are present on the occlusal surface?
How many pits are present on the occlusal surface?
What is the resemblance of the Primary Maxillary Second Molar to?
What is the resemblance of the Primary Maxillary Second Molar to?
What is a distinct feature of the permanent maxillary first molar?
What is a distinct feature of the permanent maxillary first molar?
What is a characteristic of the occlusal aspect of the permanent maxillary first molar?
What is a characteristic of the occlusal aspect of the permanent maxillary first molar?
What is present on the ML cusp of the permanent maxillary first molar?
What is present on the ML cusp of the permanent maxillary first molar?
How many fossae are present on the occlusal aspect of the permanent maxillary first molar?
How many fossae are present on the occlusal aspect of the permanent maxillary first molar?
What is unique about the shape of the mandibular first molar?
What is unique about the shape of the mandibular first molar?
What is characteristic of the buccal surface of the mandibular first molar?
What is characteristic of the buccal surface of the mandibular first molar?
What is characteristic of the roots of the mandibular first molar?
What is characteristic of the roots of the mandibular first molar?
What is distinctive about the ML cusp of the mandibular first molar?
What is distinctive about the ML cusp of the mandibular first molar?
What is the primary difference in the size of the deciduous mandibular second molar compared to the first one?
What is the primary difference in the size of the deciduous mandibular second molar compared to the first one?
How many roots does the deciduous mandibular second molar have?
How many roots does the deciduous mandibular second molar have?
What is the shape of the geometric outline of the occlusal surface of the deciduous mandibular first molar?
What is the shape of the geometric outline of the occlusal surface of the deciduous mandibular first molar?
What is the name of the cusp on the buccal surface of the deciduous first molar?
What is the name of the cusp on the buccal surface of the deciduous first molar?
What is the primary characteristic of the deciduous mandibular first molar that differentiates it from the permanent mandibular first molar?
What is the primary characteristic of the deciduous mandibular first molar that differentiates it from the permanent mandibular first molar?
What can be said about the elevations and depressions on the deciduous mandibular second molar?
What can be said about the elevations and depressions on the deciduous mandibular second molar?
What is the shape of the outline form of the MMR?
What is the shape of the outline form of the MMR?
What is the characteristic of the cervical line on the MMR?
What is the characteristic of the cervical line on the MMR?
Which cusp is the largest on the MMR?
Which cusp is the largest on the MMR?
What is the shape of the distal root of the MMR?
What is the shape of the distal root of the MMR?
What is the characteristic of the buccal outline of the MMR crown?
What is the characteristic of the buccal outline of the MMR crown?
How many cusps are present on the MMR?
How many cusps are present on the MMR?
What is the characteristic of the occlusal outline of the MMR?
What is the characteristic of the occlusal outline of the MMR?
What is the characteristic of the depression on the MMR root?
What is the characteristic of the depression on the MMR root?
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Study Notes
Deciduous Teeth
- Deciduous teeth erupt in the following order:
- Upper teeth: 7, 8, 18, 14, 24 months
- Lower teeth: 6, 7, 16, 12, 20 months
Primary First Molar (Upper and Lower D)
- Maxillary first molar:
- Has a predecessor (4) that is different from the 6
- Can have two types: four-cusp or three-cusp
- Four-cusp type: two buccal and two lingual cusps
- Three-cusp type: two buccal and one lingual cusp
- Geometric outline: trapezoid
- Buccal aspect:
- Very smooth surface with little evidence of developmental groove
- Occlusal surface is scalloped with no definite cusp ridge form
- Large MB cusp and small DB cusp
- Prominent cervical ridge with more prominence on the mesial half
- Roots:
- Three roots (MB, DB, and L) are thin and widely spread
- No root trunk
- Furcation is close to the cervical line
- Distal root is shorter than the mesial root
Primary Maxillary Second Molar
- Resembles the permanent maxillary first molar
- Larger than the deciduous maxillary first molar
- Roots are noticeably shorter
- General differences between the permanent and deciduous posterior teeth:
- Size
- Color
- Bulbous crown
- Prominent cervical ridge
- Thin and divergent roots
- Absence of root trunk
Mandibular First Molar
- Does not resemble any other deciduous or permanent teeth
- Primitive appearance
- Buccal aspect:
- Trapezoid outline
- Mesial contour of the crown is nearly straight
- Distal side is convex and converges toward the cervix
- MB cusp is much wider than DB cusp
- No groove between them
- Roots:
- Long, slender, and widely spread
- No root trunk
- Furcation is close to the cervical line
Primary Mandibular Second Molar
- Larger than the first molar
- Smaller than the permanent mandibular first molar
- Resembles the permanent mandibular first molar
- General differences between the deciduous and permanent teeth:
- Size
- Color
- Bulbous crown
- Prominent cervical ridge
- Thin and divergent roots
- Absence of root trunk
- However, there are differences between the deciduous and permanent mandibular first molars:
- Number of cusps and roots
- Elevations and depressions
- Geometric outline of occlusal surface
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