Podcast
Questions and Answers
What is the branch of biology concerned with the study of the structure of organisms and their parts?
Anatomy
What field of anatomy studies human tooth form and structure?
Dental Anatomy
The dental arch is that part of the oral cavity where the ______ are arranged.
teeth
What are the types of teeth that form the anterior teeth?
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How many primary teeth are in the deciduous dentition?
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The permanent dentition replaces all primary dentition by the age of 12.
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What does the dental formula for deciduous teeth represent?
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What is the duration of the primary dentition period?
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Which teeth are considered non-succedaneous?
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What is the Palmer notation system used for?
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Mastication is the process of ______ food into small pieces.
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Appearance and aesthetics do not contribute to facial beauty.
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What are the main functions of teeth?
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Study Notes
Introduction and Nomenclature
- Dental anatomy studies the structure, morphology, development and classification of teeth, as well as their function in occlusion.
- The dental arch refers to the part of the oral cavity where teeth are arranged.
- A cross is drawn on the dental arch to simplify tooth identification – the horizontal line divides the arches into the upper and lower arches.
- The vertical line divides the face and dental arches into right and left segments, each called a quadrant.
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Types and Forms of Teeth:
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Anterior:
- Incisors - Four in each arch, used for cutting and incising food.
- Canines (Cuspids) - Two in each arch, used for tearing food.
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Posterior:
- Premolars (Bicuspids) - Six in each arch, used for tearing and grinding food.
- Molars - Four in each arch, used for grinding food.
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Anterior:
Types of Dentitions
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Deciduous Dentition: (6 months - 6 years)
- Primary or temporary teeth
- 20 teeth in oral cavity, 10 in each arch, 5 in each quadrant
- Dental formula: I 2/2 C 1/1 M 2/2
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Mixed Dentition: (6 years - 12 years)
- Both deciduous and permanent teeth.
- Transitional phase
- Starts with the eruption of the first permanent molar and continues until all deciduous teeth are replaced.
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Permanent Dentition: (12 years - whole life)
- 32 teeth in oral cavity, 16 in each arch, 8 in each quadrant
- Dental formula: I 2/2 C 1/1 P 2/2 M 3/3
- Permanent molars are not preceded by deciduous teeth and are therefore called non-succedaneous teeth.
Numbering and Coding Systems of Teeth
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Palmer Notation System:
- Uses a quadrant representation facing the patient.
- Permanent teeth are numbered 1-8 on each side from the midline.
- Deciduous teeth are lettered A-E on each side from the midline.
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Federation Dentaire International (FDI) System (Two Digit System):
- Uses a two-digit code:
- First digit: Represents the quadrant (1 - 4 for permanent dentition, 5 - 8 for deciduous dentition).
- Second digit: Represents the tooth number according to Palmer notation.
- Uses a two-digit code:
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Universal Numbering System:
- Numbers are always preceded by the sign # to indicate the universal system is being used.
- Permanent teeth are numbered 1-32.
- Deciduous teeth are numbered 1-20 or lettered A-T.
Functions of Teeth
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Mastication:
- Cutting food into smaller pieces for easier swallowing.
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Appearance and Aesthetics:
- Contributes to facial beauty and smile aesthetics.
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Speech:
- Helps in speech and pronunciation.
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Description
Test your knowledge on dental anatomy, including the structure, types, and functions of teeth. This quiz will challenge your understanding of both anterior and posterior teeth, as well as the classification of dentitions. See how well you navigate through the dental arch and its components.
