Podcast
Questions and Answers
What is the age when the primary dentition is considered complete?
What is the age when the primary dentition is considered complete?
Eruption of primary teeth begins at 6 years of age.
Eruption of primary teeth begins at 6 years of age.
False
How many primary teeth do children typically have?
How many primary teeth do children typically have?
20
The primary dentition consists of 4 ___, 2 canines, and 4 molars.
The primary dentition consists of 4 ___, 2 canines, and 4 molars.
Signup and view all the answers
Match the primary tooth type with its eruption age range (months):
Match the primary tooth type with its eruption age range (months):
Signup and view all the answers
At what age does the upper central incisor typically erupt?
At what age does the upper central incisor typically erupt?
Signup and view all the answers
The lower second molar exfoliates around 10-12 years.
The lower second molar exfoliates around 10-12 years.
Signup and view all the answers
At what age does the primary dentition eruption generally start?
At what age does the primary dentition eruption generally start?
Signup and view all the answers
The first molars (d's) typically erupt before the canines (c's).
The first molars (d's) typically erupt before the canines (c's).
Signup and view all the answers
What is a potential implication of the difference in morphology between primary teeth and permanent teeth on clinical practice?
What is a potential implication of the difference in morphology between primary teeth and permanent teeth on clinical practice?
Signup and view all the answers
The development of primary dentition starts at __ weeks in utero.
The development of primary dentition starts at __ weeks in utero.
Signup and view all the answers
What type of teeth erupt first during primary dentition?
What type of teeth erupt first during primary dentition?
Signup and view all the answers
Which teeth are the last to erupt in the primary dentition?
Which teeth are the last to erupt in the primary dentition?
Signup and view all the answers
The primary dentition eruption typically includes incisors: a's and b's at around ___ to ___ months.
The primary dentition eruption typically includes incisors: a's and b's at around ___ to ___ months.
Signup and view all the answers
Match the age range with the corresponding teeth that erupt:
Match the age range with the corresponding teeth that erupt:
Signup and view all the answers
Which of the following teeth are referred to as 'a's in primary dentition?
Which of the following teeth are referred to as 'a's in primary dentition?
Signup and view all the answers
Eruption patterns of primary teeth are typically completely random.
Eruption patterns of primary teeth are typically completely random.
Signup and view all the answers
At 3 years of age, how should primary dentition appearance generally be assessed?
At 3 years of age, how should primary dentition appearance generally be assessed?
Signup and view all the answers
Eruption patterns show significant variation in timing, but they follow a generally ___ and ___ pattern.
Eruption patterns show significant variation in timing, but they follow a generally ___ and ___ pattern.
Signup and view all the answers
Which of the following is correct regarding the eruption of the first molars?
Which of the following is correct regarding the eruption of the first molars?
Signup and view all the answers
What is a common anomaly noticed in natal teeth?
What is a common anomaly noticed in natal teeth?
Signup and view all the answers
Primary teeth have thicker enamel and dentine layers compared to permanent teeth.
Primary teeth have thicker enamel and dentine layers compared to permanent teeth.
Signup and view all the answers
What is the typical eruption age range for primary teeth?
What is the typical eruption age range for primary teeth?
Signup and view all the answers
Primary teeth have a ______ occlusal table compared to permanent teeth.
Primary teeth have a ______ occlusal table compared to permanent teeth.
Signup and view all the answers
Match the following primary teeth with their characteristics:
Match the following primary teeth with their characteristics:
Signup and view all the answers
What might premature exfoliation of teeth indicate?
What might premature exfoliation of teeth indicate?
Signup and view all the answers
Caries progresses to pulp more slowly in primary teeth compared to permanent teeth.
Caries progresses to pulp more slowly in primary teeth compared to permanent teeth.
Signup and view all the answers
What is one clinical significance of the morphology of primary teeth?
What is one clinical significance of the morphology of primary teeth?
Signup and view all the answers
Between 10% and ______% of lesions in primary teeth remain undetected without BWs.
Between 10% and ______% of lesions in primary teeth remain undetected without BWs.
Signup and view all the answers
What is a characteristic of primary tooth root morphology?
What is a characteristic of primary tooth root morphology?
Signup and view all the answers
Primary teeth generally exhibit symmetry in eruption patterns.
Primary teeth generally exhibit symmetry in eruption patterns.
Signup and view all the answers
What are the teeth designated as primary dentition?
What are the teeth designated as primary dentition?
Signup and view all the answers
Match the primary teeth with their eruption sequence:
Match the primary teeth with their eruption sequence:
Signup and view all the answers
What feature of primary teeth may contribute to challenges in caries diagnosis?
What feature of primary teeth may contribute to challenges in caries diagnosis?
Signup and view all the answers
Study Notes
Objectives
- Understand the eruption sequence of primary teeth.
- Identify morphological differences between primary and permanent teeth.
- Recognize implications of these differences in clinical practice.
Primary Dentition Overview
- Development begins at 7 weeks gestation.
- Total of 20 primary teeth: 10 maxillary and 10 mandibular.
- Eruption commences around 6 months of age.
- Primary dentition is considered complete by 2.5 years.
Primary Teeth Composition
- Types of teeth include:
- 4 Incisors
- 2 Canines
- 4 Molars
Eruption and Exfoliation Timeline
- Eruption range varies by tooth type:
- Lower central incisors erupt between 6-10 months, exfoliate at 6-7 years.
- Upper central incisors erupt between 8-12 months.
- Lateral incisors erupt between 9-13 months (upper) and 10-16 months (lower).
- 1st molars erupt between 12-18 months, exfoliate 9-11 years (upper) and 14-18 months (lower).
- Canines erupt 16-22 months (upper) and 18-24 months (lower), with exfoliation around 10-12 years.
- 2nd molars erupt 22-33 months (upper) and 24-31 months (lower).
Eruption Patterns
- Eruption generally occurs in a chronological and symmetrical fashion.
- Monitor for variations in eruption order and symmetry.
- Investigate any premature exfoliation, especially without root resorption.
Common Anomalies
- Natal teeth may be present at or soon after birth, typically caused by a lower incisor, potentially affecting feeding.
- An eruption cyst is linked to dentigerous cyst formation.
Morphological Differences: Primary vs Permanent Teeth
-
Primary Teeth
- Thinner enamel and dentine.
- Shallow pulpal floor with multiple canals.
- Narrow occlusal table and broad, flat interproximal contacts.
- Clinical implications include quicker progression of caries to pulp and difficulties fitting restorative materials.
-
Permanent Teeth
- Thicker enamel and dentine layers.
- Shorter clinical crowns, providing less space for restorative bulk.
- Potential for easier pulp exposure due to morphology.
Clinical Significance
- Shape of primary teeth impacts caries diagnosis; up to 60% of lesions may remain undetected without bitewing radiographs.
- Thin and splayed roots in primary teeth increase risks in endodontic treatments and fractures.
Summary of Key Points
- Total of 20 primary teeth categorized into incisors, canines, and molars.
- Eruption starts at 6 months, concludes by 2.5 years.
- Recognize significant morphological differences impacting clinical management of primary versus permanent teeth.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Related Documents
Description
This quiz focuses on the eruption sequence and morphological characteristics of primary teeth. Participants will gain an understanding of how primary dentition develops and its significance in dental health. Ideal for dental students and professionals alike.
