Lecture 1 Maxillary Central Incisor Flashcards
What is included in the stomatognathic system?
A) Jaws
B) Temporomandibular Joint (TMJ)
C) Teeth
D) All of the above
D) All of the Above
At what age does the maxillary central incisor typically erupt?
A) 5 years 8 months
B) 7 years and 6 months
C) 9 years 3 months
D) 12 years
B) 7 years and 6 months
What is the approximate length of the maxillary central incisor?
A) 15-17 mm
B) 18-20 mm
C) 22-23 mm
D) 25-27 mm
C) 22-23 mm
Which of the following best describes the shape of the maxillary central incisor crown from the labial aspect?
A) Round
B) Shovel-shaped
C) Triangular
D) Square
B) Shovel-shaped
How is the mesial outline of the maxillary central incisor described?
A) Short and rounded
B) Long and flat
C) Curved and convex
D) Narrow and pointed
B) Long and flat
Which tissue is the hardest and most calcified in the human body?
A) Dentin
B) Cementum
C) Enamel
D) Pulp
C) Enamel
What is the primary function of cementum?
A) To cover the crown of the tooth
B) To form the tooth’s roots
C) To provide enamel with its hardness
D) To protect the pulp chamber
B) to form the tooth’s roots
How many permanent teeth does an adult typically have?
A) 20
B) 24
C) 28
D) 32
D) 32
Which of the following describes the pulp chamber of the maxillary central incisor?
A) Cone-shaped with multiple canals
B) Triangular with a flattened V-P shape
C) Circular with a smooth surface
D) Square with numerous extensions
B) Triangular with a Flattened V-P shape
What is the clinical significance of the maxillary central incisor’s high volume?
A) Difficult to extract
B) Susceptible to caries
C) Easier to restore prosthetically
D) More prone to periodontal disease
C) Easier to restore prostheically
Which of the following features describes the enamel of a tooth?
A) Mesodermal origin
B) 25% organic
C) 96-97% inorganic
D) Includes pulp chamber
C) 96-97% inorganic
What does the term “difiodont” refer to?
A) Two generations of teeth
B) Multiple regeneration of teeth
C) Different types of teeth
D) Single set of teeth
A) Two generations of teeth
What is the primary role of the stomatognathic system?
A) Digestion
B) Communication
C) Masticatory functions
D) Blood circulation
C) Masticatory functions
Which of the following describes the mesial and distal outlines of the maxillary central incisor?
A) Both are flat
B) Mesial is shorter and more convex; Distal is longer and flatter
C) Mesial is longer and flatter; Distal is shorter and more convex
D) Both are equally convex
C) Mesial is longer and flatter, Distal is shorter and more convex
What is the anatomical cervix of the maxillary central incisor characterized by?
A) A deep groove
B) A 25% enamel overlay
C) Meeting point of enamel and cementum
D) High transparency
C) Meeting point of enamel and Cementum
Which dental tissue is primarily responsible for the formation of dentin?
A) Odontoblasts
B) Cementoblasts
C) Ameloblasts
D) Enameloblasts
A) Odontoblasts
How does the cervical outline of the maxillary central incisor appear from the labial aspect?
A) Deep groove
B) Convex towards the apex
C) Flat and straight
D) Concave
B) Convex towards the apex
What is a key characteristic of the dental hard tissue known as cementum?
A) It is found only on the crown of the tooth.
B) It has a mesodermal origin and is similar to bone.
C) It has a high content of enamel.
D) It is primarily responsible for tooth regeneration.
B) it has a mesodermal origin and is similar to bone
How does the root of the maxillary central incisor typically appear?
A) Conical with multiple canals
B) Straight with a flat surface
C) Cone-shaped with a single canal
D) Triangular with a wide base
C) cone-shaped with a single canal
What is the main feature of the cingulum on the lingual aspect of the maxillary central incisor?
A) A globular, hemisphere-like formation
B) A deep fissure
C) A large enamel overlay
D) A prominent cervical ridge
A) A globular. Hemisphere-like formation
What distinguishes the proximal aspect of the maxillary central incisor from the other aspects?
A) It has a triangular shape with a convex labial outline and concave lingual outline.
B) It shows a flattened surface with minimal relief.
C) It is characterized by a rounded, smooth cervical outline.
D) It includes a straight incisal edge and a pronounced marginal ridge.
A) it has a triangular shape with a convex labial outline and concave lingual outline
What is the primary function of the odontoblasts in dentin formation?
A) To create enamel
B) To form the root structure
C) To produce dentin
D) To repair cementum
C) To produce Dentin
What is the function of the enamel in the tooth structure?
A) It forms the root of the tooth
B) It provides structural support to the pulp chamber
C) It covers the crown and provides protection
D) It aids in the regeneration of dentin
C) it covers the crown and provides protection
How does the maxillary central incisor’s pulp chamber typically appear?
A) Round with 3-4 extensions
B) Flattened V-P shape with 3-4 extensions
C) Square with smooth walls
D) Elongated with a complex canal system
B) Flattened V-P shape with 3-4 extensions
- What is a key feature of the human dental formula for primary teeth?
A) 20 teeth with 10 on the top and 10 on the bottom
B) 32 teeth with 16 on the top and 16 on the bottom
C) 28 teeth with 14 on the top and 14 on the bottom
D) 18 teeth with 9 on top and 9 on the bottom
A) 20 teeth with 10 on top and 10 on the bottom
