Back to AI Flashcard MakerNursing /Dental Assisting: Tooth Morphology Part 2
3 anatomical features of teeth are
Contours, contacts and embrasures
Tap or swipe ↕ to flip
Swipe ←→Navigate
1/43
Key Terms
Term
Definition
3 anatomical features of teeth are
Contours, contacts and embrasures
Contour is
Crown of the tooth which narrows towards the cervical line
The mesial or distal surface of a tooth that touches the adjacent tooth in the same arch
Contact area
Contact point
Exact spot at which the teeth actually touch each other
Contacts do what?
Prevent food impact ion, protects interproximal tissues and stabilizes the arches
An embrassure is what
Is a triangular space between the proximal surfaces of two adjoining teeth in contact
Related Flashcard Decks
Study Tips
- Press F to enter focus mode for distraction-free studying
- Review cards regularly to improve retention
- Try to recall the answer before flipping the card
- Share this deck with friends to study together
| Term | Definition |
|---|---|
3 anatomical features of teeth are | Contours, contacts and embrasures |
Contour is | Crown of the tooth which narrows towards the cervical line |
The mesial or distal surface of a tooth that touches the adjacent tooth in the same arch | Contact area |
Contact point | Exact spot at which the teeth actually touch each other |
Contacts do what? | Prevent food impact ion, protects interproximal tissues and stabilizes the arches |
An embrassure is what | Is a triangular space between the proximal surfaces of two adjoining teeth in contact |
A line angle is a junction of how many walls | 2 |
A point angle is formed by the junction of how many surfaces | 3 |
Both primary and permanent anterior teeth have how many roots | 1 |
All premolars/bicuspids have how many roots. The exception is the max. First pre molar and it has how many? | Premolars/bicuspids have 1 | Max first premolar has 2 |
All max molars have how many well formed & separated roots? except for the third molar | 3 |
All mand molars have how many well formed & separated roots? | 2 |
What are the 3 tooth numbering systems | Universal, international/FDI and Palmer |
What does MODBL stand for | Mesio-occluso-disto-bucco-lingual |
OB stands for | Occlusobuccal |
Date of eruption for a central incisor | 6-10months |
Date of eruption for lateral incisor | 9-12 months |
Date of eruption for first molar | 12-18 months |
Date of eruption for canine | 16-22 months |
Date of eruption for second molar | 24-32 months |
Habits such as thumb sucking or improper swallowing habit can affect | Occlusion |
Centric occlusion | Jaws are closed in a position that produce maximal stable contact between the occluding surfaces of the max and mand teeth |
Functional occlusion | Contact of the the teeth during biting and chewing movements |
Malocclusion | Abnormal relationship of the teeth |
Normal occlusion is when | Mesiobuccal cusp of permanent maxillary first molar occluded with mesiobuccal groove of the mandibular first molar |
Maxillary canine occluded with distal half of mand canine and the mesial half of the mand premolar | Normal occlusion |
Basis of angles classification system is that | The permanent maxillary first molar is the key to occlusion |
There are three classifications of occlusion | |
Class 1 occlusion is knows as a | Neutroclusion |
Neutroclusion is when | The mesiobuccal cusp of permanent maxillary first molar occluded with the mesiobuccal groove of the mandibular first molar Also known as crooked teeth caused by crowding or spacing |
Class 2 is known as | Distoclusion |
Distoclusion is when | Mesiobuccal cusp of permanent maxillary first molar occluded mesial to the mesiobuccal groove of the mandibular first molar Also known as an overbite |
Class 3 is known as | Mesioclusion |
Mesioclusion is when | Mesiobuccal cusp of permanent maxillary first molar occludes distal to the mesiobuccal groove of the mandibular first molar Also known as an underbite |
What is the name for the arc of the occlusal plane | Curve of spee |
Curve of Wilson | Defined by a line drawn across the occlusion surface of the left mandibular first molar across the arch and through the occlusal surface of the right mandibular first molar |
Antagonist | Every tooth in the oral cavity has 2 antagonists EXCEPT THE MANDIBULAR central incisors and maxillary 3rd molars |
Cavity class 1 | Occlusal on posteriors and lingual out of anteriors |
Cavity class 2 | Proximal surfaces of posteriors | In between sides touching other teeth, hard to see |
Cavity class 3 | Proximal surfaces of incisors and canines same as 2 just on different teeth |
Cavity class 4 | Proximal surfaces of incisors and canines, similar to class 3 except it includes the incisal edge |
Cavity class 5 | Gingival third of the facial or lingual surface of any tooth Near base of tooth above gums |
Cavity class 6 | Incisal edges of anterior teeth Appears as lesions on biting surface of teeth |