FDI Tooth Identification Quiz

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What does the '+' symbol indicate in tooth identification?

An upper jaw tooth (correct)

The right side of the mouth

A lower jaw tooth

A deciduous tooth

How is a permanent tooth on the left side distinguished in the FDI notation?

The number 2 before the tooth number (correct)

A '-' sign before the tooth number

The number 1 before the tooth number

A '+' sign before the tooth number

How many teeth are accounted for by the last digit in the FDI numbering system (excluding wisdom teeth)?

8 (correct)

What does '21' represent in the FDI notation?

Upper left permanent central incisor (C) Signup and view all the answers

What is the primary structural unit of enamel?

Enamel prism (rods) (B) Signup and view all the answers

What does the absence of a zero before a single digit in the FDI notation signify?

The tooth is a permanent tooth. (D) Signup and view all the answers

What is the approximate inorganic composition of enamel?

97-98% (C) Signup and view all the answers

The notation '+13' represents which tooth?

Upper Right Permanent Canine (A) Signup and view all the answers

If a tooth is identified as '26', where is it located?

Lower Left Permanent First Molar (B) Signup and view all the answers

What is the material found between enamel prisms called?

Interprismatic substance (A) Signup and view all the answers

What are the incremental growth lines in enamel called?

Striae of Retzius (A) Signup and view all the answers

What are Perikymata?

The external manifestations of the striae of Retzius (A) Signup and view all the answers

What is the main component of hydroxyapatite crystals?

Calcium, phosphate, and hydroxyl ions (A) Signup and view all the answers

What process leads to the erosion of enamel?

Demineralization (C) Signup and view all the answers

Which tissue is formed throughout life?

Dentine (D) Signup and view all the answers

What is the typical shape of the mandibular first premolar's cross-section at the neck?

Irregularly flattened mesiodistally (A) Signup and view all the answers

How many roots and root canals does a mandibular second premolar usually have?

1 root, 1 canal (A) Signup and view all the answers

Which cusp is typically larger on a mandibular first premolar?

Buccal (B) Signup and view all the answers

What shape best describes the crown of mandibular molars?

Square/rectangular with rounded corners (D) Signup and view all the answers

How many roots and potential canals does a mandibular first molar have?

2 roots, 2 or 3 canals (B) Signup and view all the answers

Which root of the mandibular first molar is typically stronger and more massive?

Mesial (A) Signup and view all the answers

The distal root of the mandibular first molar often exhibits what characteristic?

Distal bend (B) Signup and view all the answers

How many roots and canals are typical for a mandibular second molar?

2 roots, 2 or 3 canals (C) Signup and view all the answers

Which cusp is typically the largest on a mandibular third molar?

Mesiobuccal (D) Signup and view all the answers

Where is the foramen coecum typically located on mandibular molars?

Buccal surface (D) Signup and view all the answers

What characteristic distinguishes a U-type fissure from a V-type fissure?

Ease of cleaning (C) Signup and view all the answers

What is a key indicator of caries spreading in dentin under a fissure?

A dark shadow visible through the enamel (C) Signup and view all the answers

Which type of fissure is more prone to developing carious lesions?

V-type fissure (D) Signup and view all the answers

What is the primary purpose of discoloration and alteration detection devices in dentistry?

To diagnose caries (D) Signup and view all the answers

What treatment is generally sufficient for caries confined to enamel?

Fissure sealing (B) Signup and view all the answers

What does FDI caries matrix combine?

Many caries classification systems (A) Signup and view all the answers

What does FDI stand for in the context of the content?

Federation Dentaire Internationale (B) Signup and view all the answers

Besides localization, what other factor does the classification of caries activity consider?

Provides treatment (A) Signup and view all the answers

What types of instruments are used for dentin preparation?

Burrs (C) Signup and view all the answers

What is necessary when caries reaches the dentin?

Restorative therapies (D) Signup and view all the answers

Which diamond bur is recommended for finishing preparations?

Fine (B), Ultrafine (D) Signup and view all the answers

What type of shank is commonly used for diamond burs?

Friction grip (D) Signup and view all the answers

What distinguishes a diamond bur designed for preparation from one for finishing?

Diamond particle size (D) Signup and view all the answers

What color code identifies a medium grit diamond bur?

Blue (D) Signup and view all the answers

Carbide burs are typically used for which of the following procedures?

Amalgam filling removal (A) Signup and view all the answers

What is the purpose of the color-coding system for diamond burs?

Specifies the diamond particle size (D) Signup and view all the answers

Which bur is NOT specifically mentioned as having a tapered shape?

Long round diamond bur (C) Signup and view all the answers

How does the number of cutting edges on a bur relate to the smoothness of the prepared surface?

More cutting edges result in a smoother surface (A) Signup and view all the answers

What is the function of a flat-end tapered diamond bur?

Creating access cavities (D) Signup and view all the answers

Which of the burs mentioned would likely be utilized for accessing and preparing narrow, deep areas in a tooth?

Long needle diamond bur (C) Signup and view all the answers

What is the critical pH for demineralization?

6.2 (A) Signup and view all the answers

What role does saliva play in remineralization?

It supplies minerals, such as calcium and phosphate, to the tooth enamel. (A), It neutralizes acids produced by bacteria. (C) Signup and view all the answers

What is the primary source of minerals for remineralization?

Saliva (C) Signup and view all the answers

How does fluoride enhance remineralization?

It helps form fluoroapatite, which is more resistant to acids. (D) Signup and view all the answers

What happens to enamel crystals during demineralization?

They become thinner. (D) Signup and view all the answers

What are two examples of cariogenic bacteria?

Streptococcus mutans and Lactobacillus (A) Signup and view all the answers

Which areas of the teeth are most susceptible to caries?

Pits and fissures (C) Signup and view all the answers

Which type of fissure is easiest to clean?

U-type (A) Signup and view all the answers

What factors influence the development of caries?

Substrate, time, microorganisms, and host (B) Signup and view all the answers

How does frequent snacking contribute to caries development?

It provides more opportunities for bacteria to produce acid. (A) Signup and view all the answers

What is formed on teeth in the presence of fluoride?

Fluoroapatite (C) Signup and view all the answers

What factors beside the key four, influence caries development?

Genetics, fluoride concentration, the composition, sugar content, and frequency of the diet (C) Signup and view all the answers

How does good oral hygiene prevent caries?

It removes plaque and reduces the number of bacteria, minimizing acid production. (A) Signup and view all the answers

What does bacteria in the mouth break down to produce acids?

Sugars and carbohydrates (A) Signup and view all the answers

How do acids produced by bacteria damage tooth enamel?

They dissolve the mineral content of the tooth. (D) Signup and view all the answers

Signup and view all the answers

Study Notes

Tooth Anatomy/Morphology

Teeth consist of the crown, neck, and root
The crown is the visible part of the tooth, covered by enamel
The neck is the constricted portion between the crown and root
The root is embedded in the alveolar bone
Deciduous teeth are 20 in total
Permanent teeth are 32 in total
8 teeth per quadrant for both deciduous and permanent teeth
No premolars exist in deciduous teeth
No wisdom teeth in deciduous teeth
Permanent teeth have 3 molars in each quadrant, and 2 premolars

Tooth Numbering & Orientations

Adult humans have 32 permanent teeth (adults)
20 deciduous (baby) teeth
8 teeth exist in each quadrant (permanent and deciduous teeth)
Premolars exist only in permanent teeth
Wisdom teeth are the last molars to erupt

Studying That Suits You

Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

Description

Test your knowledge on the FDI notation system used for tooth identification in dentistry. This quiz covers key concepts such as the significance of symbols, numbering, and structural components of teeth. Perfect for dental students and practitioners looking to reinforce their understanding of tooth classification.