Podcast
Questions and Answers
Which systemic factor, if present during tooth development, is LEAST likely to directly cause Molar-Incisor Hypomineralisation (MIH)?
Which systemic factor, if present during tooth development, is LEAST likely to directly cause Molar-Incisor Hypomineralisation (MIH)?
- Localized trauma to the jaw (correct)
- Low birth weight
- Nutritional deficiency
- Genetic predisposition
A child presents with delayed eruption of several permanent teeth. Which factor would suggest a systemic rather than a local etiology?
A child presents with delayed eruption of several permanent teeth. Which factor would suggest a systemic rather than a local etiology?
- A history of early childhood caries
- Bilateral symmetry in the delayed eruption pattern (correct)
- Evidence of a previous traumatic injury to the affected area
- Crowding observed in the localized area
A patient with a history of epilepsy treated with phenytoin exhibits delayed tooth eruption and gingival hyperplasia. Which is the MOST likely cause of the delayed eruption?
A patient with a history of epilepsy treated with phenytoin exhibits delayed tooth eruption and gingival hyperplasia. Which is the MOST likely cause of the delayed eruption?
- The gingival hyperplasia physically obstructing eruption
- The phenytoin medication interfering with bone metabolism (correct)
- The epilepsy itself
- A genetic predisposition independent of the medication
After examination of a 9-year-old patient, you observe that they are missing several permanent teeth, but there is no history of extractions. Which systemic condition in their past medical history could be MOST relevant to this finding?
After examination of a 9-year-old patient, you observe that they are missing several permanent teeth, but there is no history of extractions. Which systemic condition in their past medical history could be MOST relevant to this finding?
Which of the following scenarios suggests that early loss of a deciduous molar is MOST likely to result in a localized impaction of the permanent successor?
Which of the following scenarios suggests that early loss of a deciduous molar is MOST likely to result in a localized impaction of the permanent successor?
A patient's history reveals that both their permanent molars and incisors exhibit enamel defects consistent with Molar-Incisor Hypomineralisation (MIH). Which prenatal factor would MOST likely contribute to this condition?
A patient's history reveals that both their permanent molars and incisors exhibit enamel defects consistent with Molar-Incisor Hypomineralisation (MIH). Which prenatal factor would MOST likely contribute to this condition?
A child who has undergone chemotherapy for childhood cancer exhibits several missing permanent teeth. What is the MOST probable reason?
A child who has undergone chemotherapy for childhood cancer exhibits several missing permanent teeth. What is the MOST probable reason?
An 8-year-old patient has delayed eruption of their permanent canines. Which of the following historical factors would MOST strongly suggest a potential hormonal etiology?
An 8-year-old patient has delayed eruption of their permanent canines. Which of the following historical factors would MOST strongly suggest a potential hormonal etiology?
A patient presents with generalized fluorosis on their permanent dentition. During which period was the MOST likely time of excessive fluoride exposure?
A patient presents with generalized fluorosis on their permanent dentition. During which period was the MOST likely time of excessive fluoride exposure?
What is the MOST likely long-term consequence of the early loss of a primary second molar without proper space maintenance?
What is the MOST likely long-term consequence of the early loss of a primary second molar without proper space maintenance?
A patient exhibits a permanent maxillary canine erupting near the midline, distal to the lateral incisor. What is the MOST likely classification for this dental anomaly?
A patient exhibits a permanent maxillary canine erupting near the midline, distal to the lateral incisor. What is the MOST likely classification for this dental anomaly?
A 9-year-old patient is missing a mandibular central incisor. Radiographic examination reveals no presence of the tooth bud. Which of the following is the MOST probable reason for this situation?
A 9-year-old patient is missing a mandibular central incisor. Radiographic examination reveals no presence of the tooth bud. Which of the following is the MOST probable reason for this situation?
What is the expected sequence of eruption for the permanent dentition in the maxilla?
What is the expected sequence of eruption for the permanent dentition in the maxilla?
A 7-year-old patient has fully erupted mandibular central and lateral incisors, as well as first molars. Based on the typical eruption chronology, which of the following teeth would you expect to erupt NEXT?
A 7-year-old patient has fully erupted mandibular central and lateral incisors, as well as first molars. Based on the typical eruption chronology, which of the following teeth would you expect to erupt NEXT?
A dental examination of a 10-month-old reveals no erupted teeth. Based on the average eruption chronology of primary teeth, which of the following teeth would be expected to erupt FIRST?
A dental examination of a 10-month-old reveals no erupted teeth. Based on the average eruption chronology of primary teeth, which of the following teeth would be expected to erupt FIRST?
What is the approximate age range for the completion of root formation of the permanent mandibular second molar?
What is the approximate age range for the completion of root formation of the permanent mandibular second molar?
A 6-year-old child presents with gingival overgrowth that partially covers the clinical crowns of the mandibular incisors. What is the MOST likely cause of this condition?
A 6-year-old child presents with gingival overgrowth that partially covers the clinical crowns of the mandibular incisors. What is the MOST likely cause of this condition?
At what age does the initial calcification of the permanent maxillary canine typically begin?
At what age does the initial calcification of the permanent maxillary canine typically begin?
A 5-year-old patient presents with delayed eruption of the primary mandibular second molar. Which of the following could potentially contribute to this delayed eruption?
A 5-year-old patient presents with delayed eruption of the primary mandibular second molar. Which of the following could potentially contribute to this delayed eruption?
A radiograph of a 13-year-old patient reveals that the roots of their permanent maxillary central incisors are approximately two-thirds formed. Based on the typical dental development timeline, what is the MOST likely eruption status of the maxillary canines?
A radiograph of a 13-year-old patient reveals that the roots of their permanent maxillary central incisors are approximately two-thirds formed. Based on the typical dental development timeline, what is the MOST likely eruption status of the maxillary canines?
Flashcards
Systemic Impacts on Dentition
Systemic Impacts on Dentition
General health factors affecting permanent tooth development and eruption.
Systemic Impact Examples
Systemic Impact Examples
Delayed eruption, missing teeth, or MIH (Molar-Incisor Hypomineralisation).
Genetic Factors (Systemic)
Genetic Factors (Systemic)
Hereditary factors influencing tooth development.
Nutritional Factors (Systemic)
Nutritional Factors (Systemic)
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Metabolic Factors (Systemic)
Metabolic Factors (Systemic)
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Pyrexia (Systemic)
Pyrexia (Systemic)
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Diseases (Systemic)
Diseases (Systemic)
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Medications (Systemic)
Medications (Systemic)
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Fluorosis (Systemic)
Fluorosis (Systemic)
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Other Systemic Impacts
Other Systemic Impacts
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Ectopic teeth
Ectopic teeth
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Supernumerary teeth
Supernumerary teeth
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Exfoliation
Exfoliation
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Maxillary deciduous initial calcification
Maxillary deciduous initial calcification
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Mandibular deciduous initial calcification
Mandibular deciduous initial calcification
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Permanent eruption order (Max)
Permanent eruption order (Max)
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Permanent eruption order (Man)
Permanent eruption order (Man)
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Deciduous eruption order (Max)
Deciduous eruption order (Max)
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Deciduous eruption order (Man)
Deciduous eruption order (Man)
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Central incisor eruption
Central incisor eruption
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Study Notes
- Understanding the eruption and exfoliation sequence is crucial in dentistry
Impact on Permanent Dentition
- Systemic or local factors can impact permanent dentition
Systemic Impacts
- Systemic issues may result in delayed eruption, non-formation (missing teeth), or Molar-Incisor Hypomineralisation (MIH)
- Genetic factors
- Nutrition
- Metabolic disorders like hormonal or endocrine imbalances
- Systemic infections causing pyrexia
- Diseases such as kidney issues or cancer
- Medications like chemotherapy or anti-epileptic drugs (e.g., phenytoin)
- Fluorosis
- Other factors like low birth weight or exposure to a smoking environment
Local Impacts
- Local factors may result in delayed eruption, non-formation (missing teeth), or Molar-Incisor Hypomineralisation (MIH)
- Early loss of deciduous teeth
- Impacted, misplaced, or ectopic teeth, commonly maxillary canines and mandibular third molars
- Missing teeth, usually maxillary lateral incisors and mandibular third molars
- Supernumerary teeth
- Trauma
- Gingival hyperplasia or fibrosis
- Oral clefts
- Eruption cysts
Deciduous Tooth Chronology - Maxillary
- First Incisor (A):
- Initial calcification: 3-4 months in utero
- Crown completion: 4 months
- Eruption: 7.5 months
- Root completion: 1.5-2 years
- Second Incisor (B):
- Initial calcification: 4-5 months in utero
- Crown completion: 5 months
- Eruption: 8 months
- Root completion: 1.5-2 years
- Canine (C):
- Initial calcification: 5 months in utero
- Crown completion: 9 months
- Eruption: 16-20 months
- Root completion: 2-2.5 years
- First Molar (D):
- Initial calcification: 5 months in utero
- Crown completion: 6 months
- Eruption: 12-16 months
- Root completion: 2-2.5 years
- Second Molar (E):
- Initial calcification: 6 months in utero
- Crown completion: 10-12 months
- Eruption: 1.75-2.5 years
- Root completion: 3 years
Deciduous Tooth Chronology - Mandibular
- First Incisor (A):
- Initial calcification: 4-5 months in utero
- Crown completion: 4 months
- Eruption: 4 months
- Root completion: 1.5-2 years
- Second Incisor (B):
- Initial calcification: 4-5 months in utero
- Crown completion: 4.5 months
- Eruption: 4.5 months
- Root completion: 1.5-2 years
- Canine (C):
- Initial calcification: 5 months in utero
- Crown completion: 9 months
- Eruption: 9 months
- Root completion: 2.5-3 years
- First Molar (D):
- Initial calcification: 5 months in utero
- Crown completion: 6 months
- Eruption: 6 months
- Root completion: 2-2.5 years
- Second Molar (E):
- Initial calcification: 6 months in utero
- Crown completion: 10-12 months
- Eruption: 10-12 months
- Root completion: 3 years
Permanent Tooth Chronology - Maxillary
- Central Incisor (1):
- Initial calcification: 3-4 months after birth
- Crown completion: 4-5 years
- Eruption: 7-8 years
- Root completion: 10 years
- Lateral Incisor (2):
- Initial calcification: 10-12 months after birth
- Crown completion: 4-5 years
- Eruption: 8-9 years
- Root completion: 11 years
- Canine (3):
- Initial calcification: 4-5 months after birth
- Crown completion: 6-7 years
- Eruption: 11-12 years
- Root completion: 13-15 years
- First Premolar (4):
- Initial calcification: 18-21 months after birth
- Crown completion: 5-6 years
- Eruption: 10-11 years
- Root completion: 12-13 years
- Second Premolar (5):
- Initial calcification: 2-2.5 years
- Crown completion: 6-7 years
- Eruption: 10-12 years
- Root completion: 12-14 years
- First Molar (6):
- Initial calcification: At birth or slightly before
- Crown completion: 2.5-3 years
- Eruption: 6-7 years
- Root completion: 9-10 years
- Second Molar (7):
- Initial calcification: 2.5-3 years
- Crown completion: 7-8 years
- Eruption: 11-13 years
- Root completion: 14-16 years
- Third Molar (8):
- Initial calcification: 7-9 years
- Crown completion: 12-16 years
- Eruption: 17-21 years
- Root completion: 18-25 years
Permanent Tooth Chronology - Mandibular
- Central Incisor (1):
- Initial calcification: 3-4 months after birth
- Crown completion: 4-5 years
- Eruption: 6-7 years
- Root completion: 9 years
- Lateral Incisor (2):
- Initial calcification: 3-4 months after birth
- Crown completion: 4-5 years
- Eruption: 7-8 years
- Root completion: 10 years
- Canine (3):
- Initial calcification: 4-5 months after birth
- Crown completion: 6-7 years
- Eruption: 9-10 years
- Root completion: 12-14 years
- First Premolar (4):
- Initial calcification: 21 months-2 years
- Crown completion: 5-6 years
- Eruption: 10-12 years
- Root completion: 12-13 years
- Second Premolar (5):
- Initial calcification: 2 ¼ - 2 ½ years
- Crown completion: 6-7 years
- Eruption: 11-12 years
- Root completion: 13-14 years
- First Molar (6):
- Initial calcification: At birth or slightly before
- Crown completion: 2.5-3 years
- Eruption: 6-7 years
- Root completion: 9-10 years
- Second Molar (7):
- Initial calcification: 2.5-3 years
- Crown completion: 7-8 years
- Eruption: 11-13 years
- Root completion: 14-15 years
- Third Molar (8):
- Initial calcification: 8-10 years
- Crown completion: 12-16 years
- Eruption: 17-21 years
- Root completion: 18-25 years
Order of Eruption - Maxillary Permanent Teeth
- First Molar (6): 6-7 years
- Central Incisor (1): 7-8 years
- Lateral Incisor (2): 8-9 years
- First Premolar (4): 10-11 years
- Second Premolar (5): 10-12 years
- Canine (3): 11-12 years
- Second Molar (7): 12-13 years
- Third Molar (8): 17-21 years
Order of Eruption - Mandibular Permanent Teeth
- First Molar (6): 6-7 years
- Central Incisor (1): 6-7 years
- Lateral Incisor (2): 8-9 years
- Canine (3): 9-10 years
- First Premolar (4): 10-12 years
- Second Premolar (5): 11-12 years
- Second Molar (7): 11-13 years
- Third Molar (8): 17-21 years
Order of Eruption - Maxillary Deciduous Teeth
- Central Incisor (A): 7.5 months
- Lateral Incisor (B): 8 months
- First Molar (D): 12-16 months
- Canine (C): 16-20 months
- Second Molar (E): 1.75 - 2.5 years
Order of Eruption - Mandibular Deciduous Teeth
- Central Incisor (A): 4 months
- Lateral Incisor (B): 4.5 months
- First Molar (D): 6 months
- Canine (C): 9 months
- Second Molar (E): 1 year
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Description
Explore how systemic and local factors impact dental eruption and permanent dentition. Systemic issues lead to delayed eruption and MIH. Local factors can result in impacted teeth.
