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Questions and Answers
What is the function of a cusp on a tooth?
Which of the following is NOT an anatomical landmark associated with teeth?
In which part of the tooth is the cingulum located?
What is the purpose of marginal ridges on teeth?
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What do triangular ridges on teeth descend from?
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Which anatomical landmark resembles a girdle encircling the lingual surface at the cervical third?
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How many teeth are normally present in the complete primary dentition of a child?
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What is the term used to refer to the fact that all teeth in the primary dentition are eventually shed by age 12 or 13?
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In which arch are there 16 teeth in the complete permanent (secondary) dentition of adults?
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What is the total number of teeth in the entire primary dentition according to the text?
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Which type of dentition is composed of 32 teeth in total?
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How many teeth are typically found in each quadrant of the complete primary dentition?
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What is the function of canines in the context of dentistry?
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Which tooth surface refers to the one facing towards the cheek for posterior teeth?
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What is the main function of premolar teeth according to the text?
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Which tooth surface is related to the masticating function on posterior teeth?
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What is considered the anatomical crown of a tooth?
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Which term refers to the coronal part of a tooth covered by enamel?
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Study Notes
Deciduous Teeth
- The deciduous teeth are numbered from 1 to 20, with the suffix "d" added to distinguish them from permanent teeth.
- An alternative system uses letters from A to T to designate deciduous teeth.
Anatomical Landmarks
- Raised landmarks: cusp, tubercle, cingulum
- Depressed landmarks: fossa, sulcus, groove, pit
- Other landmarks: lobe, mamelon
Cusp
- An elevation or mound on the crown of a tooth that makes up part of the occlusal surface.
Tubercle
- A smaller elevation on the crown of a tooth, produced by extra formation of enamel, deviating from the typical form.
Cingulum
- A convexity on the lingual lobe of an anterior tooth, making up the bulk of the cervical third of the lingual surface, resembling a girdle that encircles the lingual surface at the cervical third.
Ridges
- Linear elevations on the surface of a tooth, named according to their location.
- Types of ridges: marginal ridges, triangular ridges.
Tooth Classification
- Anterior teeth: 4 incisors, 2 canines in each arch, totaling 8 teeth.
- Posterior teeth: 8 premolars (4 in each arch), 12 molars (6 in each arch).
Tooth Function
- Incisors: incising, cutting food.
- Canines: tearing, cutting food.
- Premolars: tearing, grinding food.
- Molars: grinding food.
Tooth Surfaces
- Facial (labial or buccal surface): next to the lips and cheeks.
- Palatal surface: towards the palate (upper teeth).
- Lingual surface: towards the tongue (lower teeth).
- Mesial surface: towards the midline.
- Distal surface: away from the midline.
- Incisal surface: the biting edge of anterior teeth.
- Occlusal surface: the masticating surface of posterior teeth.
Morphological Features of a Tooth
- Crown: the coronal part of the tooth covered by enamel.
- Anatomical crown: the part of the tooth covered with enamel, ending at the cervical line.
- Clinical crown: the part of the tooth visible in the oral cavity.
- Root: the part of the tooth covered by cementum, embedded in bone.
Dental Anatomy
- Defined as the study of development, morphology, function, and identity of each tooth in human dentition.
- Includes the way teeth relate to each other in the same or opposite arch.
Primary Dentition
- Complete primary dentition: 20 teeth, 10 in the upper maxillary arch and 10 in the lower mandibular arch, present in children from 2 to 6 years old.
- Also known as the deciduous dentition, eventually shed and replaced by permanent teeth.
Permanent Dentition
- Complete permanent dentition: 32 teeth, 16 in the upper maxillary arch and 16 in the lower mandibular arch, present in adults.
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Description
Test your knowledge on deciduous teeth numbering systems, anatomical landmarks, elevations, and tooth crown features. Learn about the differences between deciduous and permanent teeth.
