Recognition of Malocclusion in the Mixed Dentition Flashcards
the MD occlusion in the mixed dentition is undergoing continual change due to:
- loss of primary teeth
- eruption of permanent teeth
- growth of the face
the AP relations of the upper and lower permanent first molars 3/30 and 4/19 are described by:
Angle classification of 1899
the AP relations of the second primary molars A/T and J/K are first described by:
Louis J. Baume in 1950
if the permanent 1st molars are class I, they will:
remain in class I or become SI in the permanent dentition
if the permanent 1st molars are class II they will:
remain class II in the permanent dentition
if the permanent 1st molars are class III they will:
remain class III in the permanent dentition
what are the terminal planes
the distal surfaces of the upper and lower primary second molars
what is a mesial step
when the terminal planes of A and J are distal to the terminal planes of T and K
what is a distal step
when the terminal planes of A and J are mesial to the terminal planes of T and K
what is a flush terminal plane
when the terminal planes of A and J are vertical or coincident with T and K
if the terminal plane of the upper primary molars is 3+mm distal to the terminal plane of the lower primary molar and the permanent 1st molars are end on, the occlusion in the permanent dentition may become:
Class I
if the terminal plane of the upper primary molar is flush or mesial to the terminal plane of the lower primary molar and the permanent 1st molars are end on the AP molar relation in the permanent dentition will be:
class II
what will be the molar class in the permanent dentition if you have a mesial step
class I or class III
what will be the molar class in the permanent dentition if you have a distal step
class II
what will be the molar class in the permanent dentition if you have a flush terminal plane
either class I or class II
the MD width of primary molars is ______ than the MD width of the permanent premolars
larger
primary mandibular molars are _____ than maxillary primary molars
larger
what will a distal step become if there is forward growth of the mandible
end to end
what will a flush terminal plane be if there is forward growth of the mandible
class I
what will a mesial step become if there is forward growth of the mandible
class III
what will a mesial step become if there is normal growth of the mandible
class I
what will the distal step become if there is normal growth of the mandible
class II
