Podcast
Questions and Answers
What is a characteristic of enamel defects caused by amelogenesis imperfecta?
What is a characteristic of enamel defects caused by amelogenesis imperfecta?
- The enamel defects are usually only cosmetic.
- The enamel is defective and thinner than normal. (correct)
- The enamel is more resistant to acid attack.
- The enamel appears thicker and less plaque-retentive.
Which of the following is a potential cause of developmental enamel defects?
Which of the following is a potential cause of developmental enamel defects?
- Inherited and acquired systemic conditions. (correct)
- Poor oral hygiene leading to plaque buildup.
- Excessive fluoride exposure during childhood.
- Regular consumption of acidic foods.
How do developmental enamel defects typically affect primary teeth?
How do developmental enamel defects typically affect primary teeth?
- They primarily cause discoloration without structural issues.
- They lead to complete tooth regeneration.
- They enhance the overall strength of the teeth.
- They can increase the risk of early childhood caries and tooth wear. (correct)
What factors influence the appearance of enamel defects?
What factors influence the appearance of enamel defects?
Which statement about the effect of enamel hypoplasia is false?
Which statement about the effect of enamel hypoplasia is false?
What is a characteristic of primary teeth in terms of color?
What is a characteristic of primary teeth in terms of color?
Which of the following describes a potential dental issue related to avulsion?
Which of the following describes a potential dental issue related to avulsion?
Which of the following terms refers to an abnormal curvature of a tooth root?
Which of the following terms refers to an abnormal curvature of a tooth root?
What dental condition is characterized by underdevelopment of enamel surfaces?
What dental condition is characterized by underdevelopment of enamel surfaces?
How does the size of primary teeth typically compare to permanent teeth?
How does the size of primary teeth typically compare to permanent teeth?
What type of discoloration is commonly seen in dental hypoplasia?
What type of discoloration is commonly seen in dental hypoplasia?
Which dental formation is often associated with incorrect root formation?
Which dental formation is often associated with incorrect root formation?
What is typically the primary cause of dental avulsion?
What is typically the primary cause of dental avulsion?
What is the typical appearance of deciduous or primary teeth compared to permanent teeth?
What is the typical appearance of deciduous or primary teeth compared to permanent teeth?
What describes the impact of dental trauma on permanent teeth?
What describes the impact of dental trauma on permanent teeth?
At what age do primary teeth typically begin to exfoliate and are replaced by permanent teeth?
At what age do primary teeth typically begin to exfoliate and are replaced by permanent teeth?
Which primary teeth are replaced by permanent premolars?
Which primary teeth are replaced by permanent premolars?
What is a sign of teething in infants?
What is a sign of teething in infants?
Which of the following is NOT a characteristic of primary teeth?
Which of the following is NOT a characteristic of primary teeth?
Which of the following is a condition that can affect the primary dentition?
Which of the following is a condition that can affect the primary dentition?
What age do the lower primary central incisors typically erupt?
What age do the lower primary central incisors typically erupt?
Which primary teeth erupt between 12 to 16 months of age?
Which primary teeth erupt between 12 to 16 months of age?
Which symptom is commonly believed to be associated with teething but lacks evidence?
Which symptom is commonly believed to be associated with teething but lacks evidence?
Which factor increases the risk of carries in children?
Which factor increases the risk of carries in children?
What is the general appearance of the gums during teething?
What is the general appearance of the gums during teething?
What is one significant function of primary dentition?
What is one significant function of primary dentition?
Which of the following is a common misconception regarding primary teeth?
Which of the following is a common misconception regarding primary teeth?
What is one potential consequence of premature loss of a primary tooth?
What is one potential consequence of premature loss of a primary tooth?
What is NOT a sign of teething in children?
What is NOT a sign of teething in children?
Which factor is important in distinguishing primary teeth from permanent teeth?
Which factor is important in distinguishing primary teeth from permanent teeth?
Why is the primary dentition particularly at risk for caries?
Why is the primary dentition particularly at risk for caries?
What is the result of tooth drift in the primary dentition?
What is the result of tooth drift in the primary dentition?
Which of the following is NOT a condition associated with primary dentition?
Which of the following is NOT a condition associated with primary dentition?
What is hypodontia?
What is hypodontia?
What condition is characterized by having too many teeth?
What condition is characterized by having too many teeth?
What did the systematic review by Lenzi et al. (2014) principally focus on?
What did the systematic review by Lenzi et al. (2014) principally focus on?
What is the association of trauma in primary incisors with permanent teeth?
What is the association of trauma in primary incisors with permanent teeth?
At what age does trauma to primary teeth appear to have a more severe impact on permanent teeth?
At what age does trauma to primary teeth appear to have a more severe impact on permanent teeth?
What is avulsion in the context of primary teeth?
What is avulsion in the context of primary teeth?
What type of trauma involves knocking a tooth into its socket?
What type of trauma involves knocking a tooth into its socket?
How many studies were reviewed in Lenzi et al. (2014)?
How many studies were reviewed in Lenzi et al. (2014)?
What is oligodontia?
What is oligodontia?
Which statement is true regarding trauma during the formation of permanent teeth?
Which statement is true regarding trauma during the formation of permanent teeth?
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Study Notes
Importance of the Primary Dentition
- Primary teeth are important for proper space maintenance for permanent teeth.
- Premature loss of primary teeth can lead to:
- Tooth drifting
- Delayed eruption of permanent teeth
- Ectopic eruption of permanent teeth
- Malocclusion
- Crowding
- Retention of primary teeth can result in impacted permanent teeth, hypodontia (missing teeth), or hyperdontia (too many teeth).
Trauma & Primary Teeth
- Trauma to primary teeth can cause sequelae in permanent successors.
- Children who experience trauma to their primary incisors have an increased incidence of developmental disorders in permanent teeth.
- The younger the child at the time of trauma, the more likely the damage is to affect the permanent teeth.
Differences Between Primary & Permanent Dentition
- Number: Primary dentition has 20 teeth, while permanent dentition has 32 teeth.
- Size: Primary teeth are smaller than permanent teeth.
- Color: Primary teeth appear whiter due to thinner enamel.
- Shape: Primary teeth have a more rounded shape, while permanent teeth are more pointed.
- Premolars: Primary dentition doesn't have premolars, while permanent dentition has 8 premolars.
- Exfoliation: Primary teeth exfoliate and are replaced by permanent teeth between 6-13 years.
- Enamel: Primary teeth have thinner enamel which is more translucent than permanent enamel.
- Roots: Primary teeth have more slender roots than permanent teeth.
- Pulp: Primary teeth pulp chambers are larger than those in permanent teeth.
- Mamellons: Primary incisors don’t have mammelons - the 3 small bumps on the biting surface of permanent incisors.
Eruption Dates
- Primary teeth have a specific eruption pattern and timeline.
- Lower central incisors erupt at 6 months.
- Lower lateral incisors erupt at 7 months.
- Upper central incisors erupt at 7.5 months.
- Upper lateral incisors erupt between 8-9 months.
- Upper first molars erupt at 12-16 months.
- Lower first molars erupt at 12-16 months.
- Upper canines erupt at 16-20 months.
- Lower canines erupt at 16-20 months.
- Upper second molars erupt at 2-2.5 years.
- Lower second molars erupt at 2-2.5 years.
Teething
- Teething symptoms include:
- Flushed cheeks
- Red, sore gums where the tooth is erupting
- Increased drooling
- Biting and chewing on objects
- Irritability
- Rubbing the ear
Conditions Affecting Primary Teeth
- Hypoplasia of enamel: A condition that causes thinner enamel.
- Amelogenesis imperfecta: A genetic condition that affects enamel development.
- Developmental enamel defects: Can manifest as enamel hypoplasia or opacities caused by damage or disruption to developing enamel.
- Early childhood caries: A condition often associated with developmental enamel defects and can lead to tooth decay.
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