Podcast
Questions and Answers
What is the timeframe for the eruption of maxillary first molars?
What is the timeframe for the eruption of maxillary first molars?
Which cusp is the largest on the mandibular first molars?
Which cusp is the largest on the mandibular first molars?
What is the shape of the maxillary first molars' occlusal surface?
What is the shape of the maxillary first molars' occlusal surface?
At what age does crown completion of mandibular central incisors occur?
At what age does crown completion of mandibular central incisors occur?
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How many pulp horns do maxillary central incisors typically have?
How many pulp horns do maxillary central incisors typically have?
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What is the smallest cusp in mandibular first molars?
What is the smallest cusp in mandibular first molars?
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What feature characterizes the disto-incisal angle of mandibular lateral incisors?
What feature characterizes the disto-incisal angle of mandibular lateral incisors?
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Which root characteristic is associated with maxillary first molars?
Which root characteristic is associated with maxillary first molars?
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What is the primary feature of the occlusal surface of mandibular first molars?
What is the primary feature of the occlusal surface of mandibular first molars?
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What is the timeframe for initial calcification of maxillary central incisors?
What is the timeframe for initial calcification of maxillary central incisors?
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What is the initial calcification age for maxillary canines?
What is the initial calcification age for maxillary canines?
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At what age does the eruption of lower second molars typically occur?
At what age does the eruption of lower second molars typically occur?
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Which tooth typically has a root completion age of 14-15 years?
Which tooth typically has a root completion age of 14-15 years?
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How many roots do maxillary canines generally have?
How many roots do maxillary canines generally have?
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What is the typical age range for the eruption of lower third molars?
What is the typical age range for the eruption of lower third molars?
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Which feature is characteristic of maxillary second molars?
Which feature is characteristic of maxillary second molars?
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Which cusp is considered larger in mandibular second premolars?
Which cusp is considered larger in mandibular second premolars?
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What is the typical crown completion age for maxillary canines?
What is the typical crown completion age for maxillary canines?
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How many pulp horns do upper second molars typically have?
How many pulp horns do upper second molars typically have?
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What is a common characteristic of lower third molars based on variations?
What is a common characteristic of lower third molars based on variations?
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What age range corresponds to the initial calcification of maxillary lateral incisors?
What age range corresponds to the initial calcification of maxillary lateral incisors?
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Which characteristic is true for mandibular canines?
Which characteristic is true for mandibular canines?
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What is a distinctive feature of maxillary first pre-molars?
What is a distinctive feature of maxillary first pre-molars?
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At what age does the eruption of maxillary second pre-molars typically occur?
At what age does the eruption of maxillary second pre-molars typically occur?
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Which statement about the root formation of the mandibular first pre-molars is accurate?
Which statement about the root formation of the mandibular first pre-molars is accurate?
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What is the expected root completion age for maxillary second pre-molars?
What is the expected root completion age for maxillary second pre-molars?
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What aspect differentiates the shape of maxillary lateral incisors?
What aspect differentiates the shape of maxillary lateral incisors?
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Which feature is common among the maxillary first and second pre-molars?
Which feature is common among the maxillary first and second pre-molars?
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What is a significant characteristic of the labial surface of mandibular canines?
What is a significant characteristic of the labial surface of mandibular canines?
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Which age is associated with the crown completion of maxillary lateral incisors?
Which age is associated with the crown completion of maxillary lateral incisors?
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Study Notes
Permanent Dentition Eruption
- Mandibular First Molars: Erupt between 6-7 years old, have 5 cusps (ML, DL, MB, DB, D) with 2 roots (mesial and distal) and 3 or 4 root canals. The MB cusp is larger than the DB cusp and the ML is larger than the DL cusp.
- Maxillary First Molars: Erupt between 6-7 years old, have 4 cusps (MB, DB, MP, DP) with 3 roots (MB, DB, P) and 3 or 4 root canals. The MP cusp is the largest and the DP is the smallest.
- Mandibular Central Incisors: Erupt between 6-7 years old, have a flat labial surface and a concaved lingual surface with 1 root, 1 root canal, and 2 pulp horns (mesial and distal).
- Maxillary Central Incisors: Erupt between 7-8 years old, have a convexed labial surface and a concaved palatal surface with 1 root, 1 root canal, and 2 pulp horns (mesial and distal).
- Mandibular Lateral Incisors: Erupt between 7-8 years old, are more fan-shaped than lower central incisors and have a concaved lingual surface with 1 root, 1 root canal, and mesial and distal pulp horns.
- Maxillary Lateral Incisors: Erupt between 8-9 years old, are smaller and less bulky than lower lateral incisors with 1 root, 1 root canal, and 2 pulp horns (mesial and distal). They may have 2 roots or bi-lacerated roots and can be peg-shaped or missing.
- Mandibular Canines: Erupt between 9-10 years old, have 1 cusp inclining distally with 1 root, 1 root canal, and no pulp horns.
- Maxillary Canines: Erupt between 11-12 years old, have a convexed labial surface, concaved palatal surface, and a longer distal surface with 1 long root with distal inclination, 1 root canal, and no pulp horns. They can be impacted.
- Maxillary First Premolars: Erupt between 10-11 years old, have 2 cusps (buccal and palatal) with 2 roots, 2 root canals, and 2 pulp horns (buccal and palatal). Root formation can vary with 1 or 2 roots, and the 2 roots can be partly fused.
- Maxillary Second Premolars: Erupt between 10-12 years old, have 2 cusps (buccal and palatal) with 1 root, 1 or 2 root canals, and 2 pulp horns (buccal and palatal). They may have an additional cusp on the distal slope or a bi-furcated root.
- Mandibular First Premolars: Erupt between 10-12 years old, have 2 cusps (1 large buccal and 1 small lingual) with 1 root, 1 root canal, and 1 pulp horn.
- Mandibular Second Premolars: Erupt between 11-12 years old, have 3 cusps (1 large buccal and 2 lingual) with 1 root, 1 root canal, and 2-3 pulp horns.
- Lower Second Molars: Erupt between 11-13 years old, have 4 cusps (MB, DB, ML, DL) with 2 roots, 3-4 root canals, and 4 pulp horns.
- Upper Second Molars: Erupt between 12-13 years old, have 4 cusps (MB, DB, MP, DP) with 3 roots (P, MB, DB) and 3-4 root canals. They may have fused roots or a missing DP cusp.
- Lower Third Molars: Erupt between 17-25 years old, have 4, 5, or 6 cusps with a variable number of roots and root canals. They vary in size, shape, presence, impaction, and root fusion.
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Description
Test your knowledge on the eruption of permanent teeth, including specifics about mandibular and maxillary molars and incisors. Explore the details of tooth morphology such as cusps, roots, and eruption age. Perfect for dental students and professionals.
