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Questions and Answers
How do the size and shape of teeth determine their functions?
How do the size and shape of teeth determine their functions?
Incisors cut food without force, canines cut and tear food with force, premolars hold the food while the lingual cusps grind it, and the molars grind the food.
Name and identify the location of each of the 5 tooth surfaces.
Name and identify the location of each of the 5 tooth surfaces.
- Facial or Buccal - closest to the face, 2. Lingual - closest to the tongue, 3. Occusal - the chewing surface, 4. Mesial - toward the midline, 5. Distal - away from the midline.
Name and describe the types of teeth.
Name and describe the types of teeth.
Incisors - single-rooted with a sharp edge for cutting food; Canines - pointed teeth for tearing food; Premolars - broader surface for chewing; Molars - larger teeth for grinding food.
Explain the differences among primary, mixed, and permanent dentitions.
Explain the differences among primary, mixed, and permanent dentitions.
Define occlusion, centric occlusion, and malocclusion.
Define occlusion, centric occlusion, and malocclusion.
Name and describe Angle's classification of malocclusion.
Name and describe Angle's classification of malocclusion.
Name and describe the three primary systems of tooth numbering.
Name and describe the three primary systems of tooth numbering.
Natural teeth in the dental arch are the ________________.
Natural teeth in the dental arch are the ________________.
Baby or primary teeth are called ________________.
Baby or primary teeth are called ________________.
The natural contact of the maxillary and mandibular teeth in all positions is termed ________________.
The natural contact of the maxillary and mandibular teeth in all positions is termed ________________.
Permanent teeth that replace primary teeth are ________________.
Permanent teeth that replace primary teeth are ________________.
The teeth in the front of the mouth are called the ________________.
The teeth in the front of the mouth are called the ________________.
The upper jaw is the ________________.
The upper jaw is the ________________.
The lower jaw is the ________________.
The lower jaw is the ________________.
A ________________ is one fourth of the dentition.
A ________________ is one fourth of the dentition.
A ________________ is one sixth of the dentition.
A ________________ is one sixth of the dentition.
The ________________ is the surface of the tooth toward the midline.
The ________________ is the surface of the tooth toward the midline.
The ________________ is the surface of the tooth distant from the midline.
The ________________ is the surface of the tooth distant from the midline.
The chewing surface of the teeth is the ________________.
The chewing surface of the teeth is the ________________.
The ________________ is the area between adjacent tooth surfaces.
The ________________ is the area between adjacent tooth surfaces.
A(n) ________________ is a triangular space in the gingival direction between the proximal surfaces of two adjoining teeth in contact.
A(n) ________________ is a triangular space in the gingival direction between the proximal surfaces of two adjoining teeth in contact.
Teeth are in ________________ when there is maximum contact between the occluding surfaces of the maxillary and mandibular teeth.
Teeth are in ________________ when there is maximum contact between the occluding surfaces of the maxillary and mandibular teeth.
Teeth are in ________________ when the teeth make contact during biting and chewing movements.
Teeth are in ________________ when the teeth make contact during biting and chewing movements.
________________ is an abnormal or malpositioned relationship of the maxillary teeth to the mandibular teeth when they are in centric occlusion.
________________ is an abnormal or malpositioned relationship of the maxillary teeth to the mandibular teeth when they are in centric occlusion.
The ________________ is the curvature formed by the maxillary and mandibular arches in occlusion.
The ________________ is the curvature formed by the maxillary and mandibular arches in occlusion.
Name the set(s) of teeth humans have in their lifetimes.
Name the set(s) of teeth humans have in their lifetimes.
How many teeth are in the primary dentition?
How many teeth are in the primary dentition?
What is the term for the four sections of the divided dental arches?
What is the term for the four sections of the divided dental arches?
What term is used for the front teeth?
What term is used for the front teeth?
Name the most posterior teeth.
Name the most posterior teeth.
Which tooth is referred to as the 'cornerstone' of the dental arch?
Which tooth is referred to as the 'cornerstone' of the dental arch?
Name the surface of the tooth that faces the tongue.
Name the surface of the tooth that faces the tongue.
What is the name for the space between adjacent teeth?
What is the name for the space between adjacent teeth?
The name of the area where adjacent teeth physically touch is the ________________.
The name of the area where adjacent teeth physically touch is the ________________.
The name of the triangular space between adjacent teeth is the ______________.
The name of the triangular space between adjacent teeth is the ______________.
The junction of two tooth surfaces is a ___________.
The junction of two tooth surfaces is a ___________.
Which one-third portion of a tooth's surface is positioned toward the end of the root?
Which one-third portion of a tooth's surface is positioned toward the end of the root?
The term for the position of teeth during chewing is ________________.
The term for the position of teeth during chewing is ________________.
An individual who has an incorrect bite is given a diagnosis of ________________.
An individual who has an incorrect bite is given a diagnosis of ________________.
What is the technical term for class III occlusion?
What is the technical term for class III occlusion?
What classification is neutroclusion?
What classification is neutroclusion?
What is the name for the curve of the occlusal plane?
What is the name for the curve of the occlusal plane?
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Study Notes
Functions of Teeth
- Incisors: Designed for cutting food, sharp edges, located at the front of the mouth.
- Canines: Used for cutting and tearing food with force, longest teeth with longest roots, referred to as the "cornerstone" of the dental arch.
- Premolars: Between canines and molars, assist in holding and grinding food, may have two or three cusps.
- Molars: Larger than premolars, primarily used for chewing and grinding food, typically have four or more cusps.
Tooth Surfaces
- Facial/Buccal: Closest to the face.
- Lingual: Closest to the tongue.
- Occusal: Top surface used for chewing.
- Mesial: Surface towards the midline.
- Distal: Surface away from the midline.
Types of Dentition
- Primary: First set of 20 teeth, commonly known as deciduous teeth.
- Mixed: Transition period between ages 6 and 12, includes both primary and permanent teeth.
- Permanent: 32 adult teeth that replace primary teeth, known as succedaneous teeth.
Occlusion
- Occlusion: Natural contact between maxillary (upper) and mandibular (lower) teeth.
- Centric Occlusion: Maximum contact of opposing tooth surfaces.
- Malocclusion: Deviated occlusion from normal (Class I) alignment.
Angle's Classification
- Developed by Dr. Edward H. Angle for classifying dental occlusion.
- Uses the permanent maxillary first molar as the occlusion key, assumes centric position.
Tooth Numbering Systems
- Universal/National System: Numbers permanent teeth from 1 (upper-right third molar) to 32 (lower-right third molar), primary teeth labeled A-T.
- International Standards Organization: Two-digit system indicating quadrant and tooth position.
- Palmer Notation System: Shorthand diagram representation of teeth.
Tooth Anatomy
- Anterior Teeth: The front teeth in the mouth.
- Maxilla: Upper jawbone containing the upper teeth.
- Mandible: Lower jawbone containing the lower teeth.
Dental Arch Divisions
- Quadrant: One-fourth section of the dental arch.
- Sextant: One-sixth section of the dental arch.
Additional Definitions
- Interproximal Space: Area between adjacent tooth surfaces.
- Embrasure: Triangular space between proximal surfaces of adjoining teeth.
- Masticatory Surface: Chewing surface of teeth.
- Curve of Spee: Curvature formed by maxillary and mandibular arches in occlusion.
Common Conditions
- Functional Occlusion: Contact during biting and chewing movements.
- Mesioclusion: Technical term for Class III occlusion.
- Class I: Neutroclusion, normal occlusion alignment.
Miscellaneous Terms
- Apical One Third: Portion of the tooth surface toward the root end.
- Contact Area: Where adjacent teeth touch.
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