OSCE STUDY GUIDE || CORRECT ANSWERS 100%.
eruption sequence correct answers what is more important, eruption sequence or eruption
timing?
6 years old (6 year molar erupts) correct answers when does the mixed dentition begin?
last primary tooth exfoliated correct answers when does the mixed dentition end?
early mixed dentition correct answers permanent first molars and the 8 anterior incisors are
present
late mixed dentition correct answers only the second primary molars (E's) are present and
possibly maxillary primary canines
Palmar notation (mandibular right 2nd primary molar & maxillary left primary lateral) correct
answers LRE and ULB are what notation (and what teeth?)
mandibular left permanent 2nd premolar correct answers LR5 is what tooth?
Class I Normal Occlusion correct answers If the teeth are arranged on a smoothly curving line of
occlusion and this (ideal) molar relationship exists then normal occlusion will result (ML cusp of
maxillary first molar fits into central fossa of mandibular first molar)
Class I Malocclusion correct answers MB cusp of maxillary first molar fits into buccal groove of
mandibular first molar, but the other teeth are a mess
Class II Malocclusion correct answers DB cusp of maxillary first molar fits into the buccal ridge
of the mandibular first molar (or basically any time that the MB cusp is more anterior than the
buccal groove)
, Class II Division 1 malocclusion correct answers DB cusp of maxillary first molar fits into the
buccal ridge of the mandibular first molar (or basically any time that the MB cusp is more
anterior than the buccal groove) - overjet is present
Class II Division 2 Malocclusion correct answers DB cusp of maxillary first molar fits into the
buccal ridge of the mandibular first molar (or basically any time that the MB cusp is more
anterior than the buccal groove) - anteriors are pushed in
Class III Malocclusion correct answers Maxillary 2nd premolar sitting in the buccal groove of
mandibular first molar
negative overjet (underbite) correct answers Class III malocclusion usually demonstrates what
type of overjet?
Class II End-on occlusion correct answers teeth hitting on their opposing tooth usually means
what?
Skeletal classification correct answers Relationship between the maxilla and mandible in the AP
plane
true correct answers T/F: Molar and skeletal classification don't always match
• Molar Relationship (Angle's Class I)
• Angulation (tip of teeth)
• Inclination (torque of teeth)
• Rotation (of teeth)
• No Spaces
• Occlusal plane Flat - No Curve of Spee correct answers What are Andrew's 6 keys to normal
occlusion?
eruption sequence correct answers what is more important, eruption sequence or eruption
timing?
6 years old (6 year molar erupts) correct answers when does the mixed dentition begin?
last primary tooth exfoliated correct answers when does the mixed dentition end?
early mixed dentition correct answers permanent first molars and the 8 anterior incisors are
present
late mixed dentition correct answers only the second primary molars (E's) are present and
possibly maxillary primary canines
Palmar notation (mandibular right 2nd primary molar & maxillary left primary lateral) correct
answers LRE and ULB are what notation (and what teeth?)
mandibular left permanent 2nd premolar correct answers LR5 is what tooth?
Class I Normal Occlusion correct answers If the teeth are arranged on a smoothly curving line of
occlusion and this (ideal) molar relationship exists then normal occlusion will result (ML cusp of
maxillary first molar fits into central fossa of mandibular first molar)
Class I Malocclusion correct answers MB cusp of maxillary first molar fits into buccal groove of
mandibular first molar, but the other teeth are a mess
Class II Malocclusion correct answers DB cusp of maxillary first molar fits into the buccal ridge
of the mandibular first molar (or basically any time that the MB cusp is more anterior than the
buccal groove)
, Class II Division 1 malocclusion correct answers DB cusp of maxillary first molar fits into the
buccal ridge of the mandibular first molar (or basically any time that the MB cusp is more
anterior than the buccal groove) - overjet is present
Class II Division 2 Malocclusion correct answers DB cusp of maxillary first molar fits into the
buccal ridge of the mandibular first molar (or basically any time that the MB cusp is more
anterior than the buccal groove) - anteriors are pushed in
Class III Malocclusion correct answers Maxillary 2nd premolar sitting in the buccal groove of
mandibular first molar
negative overjet (underbite) correct answers Class III malocclusion usually demonstrates what
type of overjet?
Class II End-on occlusion correct answers teeth hitting on their opposing tooth usually means
what?
Skeletal classification correct answers Relationship between the maxilla and mandible in the AP
plane
true correct answers T/F: Molar and skeletal classification don't always match
• Molar Relationship (Angle's Class I)
• Angulation (tip of teeth)
• Inclination (torque of teeth)
• Rotation (of teeth)
• No Spaces
• Occlusal plane Flat - No Curve of Spee correct answers What are Andrew's 6 keys to normal
occlusion?
