Tooth Morphology Flashcards
At what age is the first evidence of calcification of the maxillary 8’s seen?
7-9 years
At what age is the first evidence of calcification of the mandibular 1’s seen?
3-4 months
At what age is the first evidence of calcification of the mandibular 2’s seen?
3-4 months
At what age is the first evidence of calcification of the mandibular 3’s seen?
4-5 months
At what age is the first evidence of calcification of the mandibular 4’s seen?
1.75-2 years
At what age is the first evidence of calcification of the mandibular 5’s seen?
1.25-2.5 years
At what age is the first evidence of calcification of the mandibular 6’s seen?
At birth
At what age is the first evidence of calcification of the mandibular 7’s seen?
2.5-3 years
At what age is the first evidence of calcification of the mandibular 8’s seen?
8-10 years
At what age is the crown completed in the maxillary and mandibular 1’s?
4-5 years
At what age is the crown completed in the maxillary and mandibular 2’s?
4-5 years
At what age is the crown completed in the maxillary and mandibular 3’s?
6-7 years
At what age is the crown completed in the maxillary and mandibular 4’s?
5-6 years
At what age is the crown completed in the maxillary and mandibular 5’s?
6-7 years
At what age is the crown completed in the maxillary and mandibular 6’s?
2.5-3 years
At what age is the crown completed in the maxillary and mandibular 7’s?
7-8 years
At what age is the crown completed in the maxillary and mandibular 8’s?
12-16 years
What tooth is the maxillary and mandibular 1?
Central incisor
What tooth is the maxillary and mandibular 1?
Central incisor
What tooth is the maxillary and mandibular 2?
Lateral incisor
What tooth is the maxillary and mandibular 3?
Canine
What tooth is the maxillary and mandibular 4?
First premolar
What tooth is the maxillary and mandibular 5?
Second premolar
What tooth is the maxillary and mandibular 6?
First molar
What tooth is the maxillary and mandibular 7
Second molar
What tooth is the maxillary and mandibular 8?
Third molar
At what age do the maxillary 1’s erupt?
7-8 years
At what age do the maxillary 2’s erupt?
8-9 years
At what age do the maxillary 3’s erupt?
11-12 years
At what age do the maxillary 4’s erupt?
10-11 years
At what age do the maxillary 5’s erupt?
10-12 years
At what age do the maxillary 6’s erupt?
6-7 years
At what age do the maxillary 7’s erupt?
12-13 years
At what age do the maxillary 8’s erupt?
17-21 years
At what age do the mandibular 1’s erupt?
6-7 years
At what age do the mandibular 2’s erupt?
7-8 years
At what age do the mandibular 3’s erupt?
9-10 years
At what age do the mandibular 4’s erupt?
10-12 years
At what age do the mandibular 5’s erupt?
11-12 years
At what age do the mandibular 6’s erupt?
6-7 years
At what age do the mandibular 7’s erupt?
12-13 years
At what age do the mandibular 8’s erupt?
17-21 years
At what age does the root complete formation in the maxillary 1’s?
10 years
At what age does the root complete formation in the maxillary 2’s?
11 years
At what age does the root complete formation in the maxillary 3’s?
13-15 years
At what age does the root complete formation in the maxillary 4’s?
12-13 years
At what age does the root complete formation in the maxillary 5’s?
12-14 years
At what age does the root complete formation in the maxillary 6’s?
9-10 years
At what age does the root complete formation in the maxillary 7’s?
14-16 years
At what age does the root complete formation in the maxillary 8’s?
18-25 years
At what age does the root complete formation in the mandibular 1’s?
9 years
At what age does the root complete formation in the mandibular 2’s?
10 years
At what age does the root complete formation in the mandibular 3’s?
12-14 years
At what age does the root complete formation in the mandibular 4’s?
12-13 years
At what age does the root complete formation in the mandibular 5’s?
13-14 years
At what age does the root complete formation in the mandibular 6’s?
9-10 years
At what age does the root complete formation in the mandibular 7’s?
14-15 years
At what age does the root complete formation in the mandibular 8’s?
18-25 years
What is the mesial surface?
The surface closest to the midline
What is the distal surface?
The tooth surface furthest from the centre line
What is the buccal surface?
Tooth surface nearest the inside of the cheek
What is the labial surface?
Tooth surface nearest to the inside of the lip
What is the lingual surface?
Mandibular tooth surface nearest to the tongue
What is the palatal surface?
Maxillary tooth surface nearest to the palate
What is the occlusal surface?
The biting or chewing surface of the premolars and molars
What are the cusps?
Sharp, pointed surface extensions on the pre molars and molars
What is the Incisal edge?
The sharp cutting edges of the incisors and canine teeth
What are the 5 coronal features of the tooth?
- Outline form of the crown
- Cuspal form (number, position, shape size)
- Incisal form (shape of edges and incisal corners)
- Pits/Fossae (groove numbers and positioning)
- Fissure pattern on occlusal surface
What are pits in the teeth?
They are depressions on the occlusal surface
What are the 9 outlines (shapes) the posterior teeth can have?
Pentagon
Rectangular
Rhomboid
Heart
Oval
Diamond
Square
Rounded
Angular
What are the 3 outlines (shapes) the posterior teeth can have?
Trapezium
Pentagon
Wedge/triangular
How can you distinguish between a maxillary molar and mandibular molar?
Maxillary molars have 3 roots (Mesio-buccal, disto-buccal & palatal roots)
Mandibular molars have 2 roots (Mesial root & distal roots teeth)
Describe the palatal root
Largest root
Circular in cross section
Describe the buccal roots
Slender
Flattened messy-distally
Describe full the upper left first permanent molar
Classification: UL6 or 26
A large tooth with a rhomboidal occlusal outline
Has 4 main cusps largest to smallest:, mesio-palatal (MP), mesio-buccal (MB), disto-buccal (DB) & disto-palatal (DP)
1 accessory mesio-palatal cusp (the cusp of carabelli)
Messial fossa and a mid buccal fossa
Oblique ridge running diagonally from the MP to the DB dividing the occlusal surface
Disto palatal fissures runs from the distal fossa and ends in the palatal groove
3 roots; a palatal root which is longer and circular in cross section. The buccal roots are more slender and flattened, mesio-buccal root larger and wider than disto-buccal root.
What is an overjet?
Horizontal distance between the upper incisor edge and the lower incisor edge
What is an overbite?
Vertical distance, coverage of lower incisor teeth by the upper incisor teeth
What is the intercuspal position?
When a patient closes their back teeth so that their teeth are maximally meshed together
the unrestored dentition occlusal contacts provide stability where a cusp fits into a fossa or where it meets a marginal ridge of teeth in the opposing arch
What is our professional responsibility in regard to dental records?
They must be accurate, truthful and reflect the true state of events seen at the time
They must also be written at the time of the appointment
They are legal records
What can dental records be used as?
They ca be used as evidence by the GDC following a complaint of a dental professional
They are crucial and vital evidence for forensic investigations in terms of criminal trials
What 3 things can forensic dentists do?
Bite mark analysis
Disaster victim identification
Dental human identification
State the
a. First evidence of calcification
b. Year crown is completed
c. When the tooth erupts
d. root completion year
Of the maxillary 1’s
a. 3-4 months
b. 4-5 years
c. 7-8 years
d. 10 years
State the
a. First evidence of calcification
b. Year crown is completed
c. When the tooth erupts
d. root completion year
Of the maxillary 2’s
a. 10-12 months
b. 4-5 years
c. 8-9 years
d. 11 years
State the
a. First evidence of calcification
b. Year crown is completed
c. When the tooth erupts
d. root completion year
Of the maxillary 3’s
a. 4-5 months
b. 6-7 years
c. 11-12 years
d. 13-15 years
State the
a. First evidence of calcification
b. Year crown is completed
c. When the tooth erupts
d. root completion year
Of the maxillary 4’s
a. 1.5-1.75 years
b. 5-6 years
c. 10-11 years
d. 12-13 years
State the
a. First evidence of calcification
b. Year crown is completed
c. When the tooth erupts
d. root completion year
Of the maxillary 5’s
a. 2-2.5 years
b. 6-7 years
c. 10-12 years
d. 12-14 years
State the
a. First evidence of calcification
b. Year crown is completed
c. When the tooth erupts
d. root completion year
Of the maxillary 6’s
a. At birth
b. 2.5-3 years
c. 6-7 years
d. 9-10 years
State the
a. First evidence of calcification
b. Year crown is completed
c. When the tooth erupts
d. root completion year
Of the maxillary 7’s
a. 2.5-3 years
b. 7-8 years
c. 12-13 years
d. 14-16 years
State the
a. First evidence of calcification
b. Year crown is completed
c. When the tooth erupts
d. root completion year
Of the maxillary 8’s
a. 7-9 years
b. 12-16 years
c. 17-21 years
d. 18-25 years
State the
a. First evidence of calcification
b. Year crown is completed
c. When the tooth erupts
d. root completion year
Of the mandibular 1’s
a. 3-4 months
b. 4-5 years
c. 6-7 years
d. 9 years
State the
a. First evidence of calcification
b. Year crown is completed
c. When the tooth erupts
d. root completion year
Of the mandibular 2’s
a. 3-4 months
b. 4-5 years
c. 7-8 years
d. 10 years
State the
a. First evidence of calcification
b. Year crown is completed
c. When the tooth erupts
d. root completion year
Of the mandibular 3’s
a. 4-5 months
b. 6-7 years
c. 9-10 years
d. 12-14 years
State the
a. First evidence of calcification
b. Year crown is completed
c. When the tooth erupts
d. root completion year
Of the mandibular 4’s
a. 1.5-2 years
b. 5-6 years
c. 10-12 years
d. 13-14 years
State the
a. First evidence of calcification
b. Year crown is completed
c. When the tooth erupts
d. root completion year
Of the mandibular 5’s
a. 1.25-2.5 years
b. 6-7 years
c. 11-12 years
d. 12-13 years
State the
a. First evidence of calcification
b. Year crown is completed
c. When the tooth erupts
d. root completion year
Of the mandibular 6’s
a. At birth
b. 2.5-3 years
c. 6-7 years
d. 9-10 years
State the
a. First evidence of calcification
b. Year crown is completed
c. When the tooth erupts
d. root completion year
Of the mandibular 7’s
a. 2.5-3 years
b. 7-8 years
c. 12-13 years
d. 14-15 years
State the
a. First evidence of calcification
b. Year crown is completed
c. When the tooth erupts
d. root completion year
Of the mandibular 8’s
a. 8-10 years
b. 12-16 years
c. 17-21 years
d. 18-25 years