27 Questions
Which of the following is a key feature of a good multiple choice question?
It should have a clear and concise stem
What is the purpose of including distractors in a multiple choice question?
To test common misunderstandings
Which of the following is an example of a plausible distractor?
A statement that is partially true but misleading
What is the primary advantage of using multiple choice questions in an assessment?
They are easy to grade
Which of the following is an example of a poorly written multiple choice question?
What is the meaning of life?
What is the recommended number of answer options for a multiple choice question?
4
Which of the following is a common mistake to avoid when writing multiple choice questions?
Making the correct answer too obvious
What is the primary disadvantage of using multiple choice questions in an assessment?
They do not test critical thinking skills
Which of the following is a way to improve the reliability of a multiple choice assessment?
Increasing the number of answer options
Which developmental abnormality occurs when two separate tooth buds join together?
Fusion
Which developmental abnormality is more prevalent, gemination or fusion?
Fusion
What are some complications of double teeth?
Delayed exfoliation of primary teeth, deviation of permanent successors, and higher risk of caries and periodontal diseases
What is concrescence?
A rare anomaly in which two teeth are joined by cement
Which teeth are ectopic enamel pearls more common in?
Mandibular molars
What is dens invaginatus?
A developmental anomaly that occurs when the enamel organ invaginates into the dental papilla, forming a small tooth within the pulp chamber
What is hypercementosis?
Increased formation or dysplasia of apical cementum
What is taurodontism?
The enlargement of the pulp chamber and lack of constriction at the level of the CEJ
What is the classification of taurodontism based on the displacement of the pulp chamber floor?
Hypotaurodontism (mild), mesotaurodontism (moderate), or hypertaurodontism (severe)
Which of the following best describes the difference between gemination and fusion?
Gemination involves two separate tooth buds joining, while fusion forms two teeth from one follicle.
Which of the following is a potential complication of double teeth?
Delayed exfoliation
Which of the following is a rare anomaly in which two teeth are joined by the cement?
Concrescence
Which of the following is a developmental anomaly that occurs as a result of invagination of the enamel organ into the dental papill, forming a small tooth within the pulp chamber?
Dens invaginatus
Which of the following is a condition in which the bifurcation or trifurcation of a tooth is displaced apically, resulting in an enlarged pulp chamber and apical displacement of the pulpal floor?
Taurodontism
Which of the following is an increased formation or dysplasia of apical cementum, which can be localized or generalized?
Hypercementosis
Which of the following is an abnormal angulation of root (or crown) that occurs during its development and may not be evident clinically?
Dilaceration
Which of the following is a low-prevalence developmental anomaly that shows enamel in ectopic positions of the root, and it is more common in mandibular teeth and maxillary first and second molars?
Ectopic enamel pearls
Which of the following is a condition that results in a bifid crown with a common root and root canal?
Fusion and gemination
Study Notes
Developmental Defects of Teeth: Abnormalities in Size and Shape
- Fusion and gemination are two different abnormalities with similar characteristics, resulting in a bifid crown with a common root and root canal.
- Germination forms two teeth from one follicle, while fusion is a condition in which two separate tooth buds join.
- Germination is less prevalent (less than 1%) and more common in anterior teeth, while fusion is more common in primary dentition (0.1-5%).
- The most commonly affected teeth in both germination and fusion are the incisors, and some cases can present the same anomaly in primary and permanent dentition.
- The etiology of developmental defects in teeth is unclear, but it may be due to evolution, trauma, hereditary/genetic factors, environmental factors, or a combination of these factors.
- Complications of double teeth include delayed exfoliation, deviation of the path of eruption of permanent successors, delayed resorption of roots, caries in the grooves, complicated RCTs, and accumulation of plaque leading to gingivitis/periodontitis.
- Concrescence is a rare anomaly in which two teeth are joined by the cement, and it can occur in both primary and permanent dentition.
- Ectopic enamel pearls are a low-prevalence developmental anomaly that shows enamel in ectopic positions of the root, and it is more common in mandibular teeth and maxillary first and second molars.
- Dens invaginatus is a developmental anomaly that occurs as a result of invagination of the enamel organ into the dental papill, forming a small tooth within the pulp chamber, and it is more common in permanent maxillary lateral incisors and canines.
- Hypercementosis is an increased formation or dysplasia of apical cementum, which can be localized or generalized, and it can occur due to mild chronic trauma, systemic factors, or Paget's disease.
- Dilaceration is an abnormal angulation of root (or crown) that occurs during its development and may not be evident clinically, and it is most common in molars and premolars.
- Taurodontism is a condition in which the bifurcation or trifurcation of a tooth is displaced apically, resulting in an enlarged pulp chamber and apical displacement of the pulpal floor, and it is associated with a large number of syndromes/conditions, such as Down syndrome, ectodermal dysplasia, and amelogenesis imperfecta.
Test your knowledge on Developmental Dental Abnormalities with this informative quiz. From fusion and gemination to taurodontism and more, learn about the prevalence, complications, and diagnosis of these abnormalities that can affect the development of teeth. With keywords such as bifid crown, cement, and dysplasia, this quiz will challenge your understanding of developmental dental anomalies and their impact on oral health.
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