Terminology and Chronology Flashcards
What is the vermilion zone?
lips
What is the vermilion border?
sharp junction of the red zone and skin
What is the nasolabial groove?
dermarcates lips and cheek
What is the philtrum of lip?
middle of upper lip
What is the oral verstibule?
slit like space between teeth and lips/cheek
What is the labial/buccal frena?
attachments of the lips and cheeks to the alveolus (bony area surrounding the teeth)
What is the hard palate composed of?
Incisive papilla, rugae, midline palatine raphe
What is the soft palate composed of?
uvula
What is contained in the floor of the mouth?
sublingual folds (lingual frenum)
When is the first sign of tooth development?
6-7 weeks i.u.
Deciduous teeth begin to calcify at
13-20 week i.u.
All deciduous teeth have begun to calcify by
18-20 weeks i.u.
Deciduous teeth erupt at
6-30 months
Define eruption
emergence into the oral cavity
Define exfoliation
loss of the deciduous tooth
exfoliation of a tooth occurs shortly before its permanent successor erupts
What are deciduous teeth?
labeled a-t
2 central incisors in each arch
2 lateral incisors in each arch
2 canines in each arch
2 first molars in each arch
2 second molars in each arch
When do manibular central incisors (deciduous) erupt?
6-8 months
When do maxillary central incisors (deciduous) erupt?
10 months
When do maxillary lateral incisors (deciduous) erupt?
11 months
When do mandibular lateral incisors (deciduous) erupt?
13 months
When do maxillary first molars erupt?
16 months (first)
When do mandibular first molars erupt?
16 months (later)
When do maxillary canines erupt?
19 months
When do mandibular canines erupt?
20 months
When do mandibular second molars erupt?
27 months
When do maxillary second molars erupt?
29 months
What is the deciduous eruption pattern?
incisors > first molars > canines > second molars
Deciduous dentition lasts until the eruption of the first permanent tooth
6 years
What is the permanent dentition?
32 permanent teeth
2 central incisors per arch
2 lateral incisors per arch
2 canines per arch
2 first premolars per arch
2 second premolars per arch
2 first molars per arch
2 second molars per arch
2 third molars per arch
What are succedaneous teeth?
permanent teeth that replace deciduous teeth
What are non-succedaneous teeth?
permanent teeth that do not replace deciduous teeth
Mandibular first molar (permanent) erupt?
6 years (first)
Maxillary first molars (permanent) erupt?
6 years (later)
What two teeth are non-succedaneous?
maxillary and mandibular first molars
Mandibular central incisors (permanent) erupt?
6-7 years
Mandibular lateral incisors (permanent) erupt?
7-8 years
Maxillary central incisor (permanent) erupt?
7-8 years
Maxillary lateral incisor (permanent) erupt?
8-9 years
Mandibular canine (permanent) erupt?
9-10 years
Maxillary first premolar (permanent) erupt?
10-11 years
Mandibular first premolar (permanent) erupt?
10-11 years
Maxillary second premolar (permanent) erupt?
10-11 years
Mandibular second premolar (permanent) erupt?
10-12 years
Maxillary canine (permanent) erupt?
11-12 years
Mandibular second molar (permanent) erupt?
11-13 years
Maxillary second molar (permanent) erupt?
12-13 years
Mandibular and maxillary third molar (permanent) erupt?
17+ years
When is root development completed?
2-3 years after eruption of teeth
When is calcification of crown of teeth completed?
1/2 time of eruption and add 1 year
What is the first part of the tooth to calcify?
crown
