Clinical Development Of The Dentition Flashcards
What are the stages in development of the dentition?
- newborn
- deciduous dentition
- mixed dentition
- permanent dentition
What is present in the newborn’s mouth?
Gum pads
What is a skeletal class 1 jaw relationship?
Correct jaw relationship- mandible 2-3 mm posterior to maxilla
What is a skeletal class 2 jaw relationship?
Mandible retruded
What is a skeletal class 3 jaw relationship?
Mandible protruded
What is the order in which the primary dentition erupts?
A B D C E
What are the differences between a primary and permanent dentition?
Primary dentition teeth are more spaced out and upright
What is the order of eruption of the permanent dentition?
- lower incisors and all first molars
- upper incisors and lower lateral incisors
- upper lateral incisors
- lower canines and all first premolars
- upper canines, all second premolars and all second molars
What is orthodontics?
The branch of dentistry concerned with facial growth with development of the dentition and occlusion with diagnosis interception and treatment of occlusal anomalies
What is a palatalised ectopic tooth?
Tooth erupts in the palate instead of the arch
What are the features of an ideal static occlusion?
- incisors slightly pro lined
- lower incisors in contact with the cingulum of maxillary teeth
- 2-4 mm overjet
- mesiobuccal cusp of permanent molar occludes with buccal groove of mandibular first molar
- tight approx contacts
- curve of spee
What are class 1 incisors?
Ideal- lower incisor edges occlude with cingulum plateau of upper central incisors
What are class 2 divisions 1 and 2 of the incisors?
Division one - pro lined overjet
Division two - incisors retroclined
What is class 3 of the incisors?
Lower incisor edges lie anteriorly to the cingulum plateau of upper incisors, reversed overjet
