Orthodontics · single question
The Curve of Spee in Class II Division 2 malocclusion is:
Show answer and explanation
Correct answer: A. Steep
Steep (A). Class II Division 2 malocclusion is characterized by:
• Maxillary central incisors that are retroclined (tipped lingually)
• Deep overbite (increased vertical overlap of anterior teeth)
• Exaggerated/steep Curve of Spee — the anterior teeth are depressed while posterior teeth are more erupted, creating a deep anteroposterior curve when viewed from the side
• Curve of Spee: the anteroposterior curvature of the occlusal plane, from the lower canine cusp tip to the distal cusp of the last molar.
• Class II Div 1: proclined upper incisors, increased overjet, relatively normal Curve of Spee.
• Reverse Curve of Spee: seen in Class III malocclusion or skeletal open bite.
• Leveling the Curve of Spee is a key orthodontic objective in Class II Div 2 treatment.
• Maxillary central incisors that are retroclined (tipped lingually)
• Deep overbite (increased vertical overlap of anterior teeth)
• Exaggerated/steep Curve of Spee — the anterior teeth are depressed while posterior teeth are more erupted, creating a deep anteroposterior curve when viewed from the side
• Curve of Spee: the anteroposterior curvature of the occlusal plane, from the lower canine cusp tip to the distal cusp of the last molar.
• Class II Div 1: proclined upper incisors, increased overjet, relatively normal Curve of Spee.
• Reverse Curve of Spee: seen in Class III malocclusion or skeletal open bite.
• Leveling the Curve of Spee is a key orthodontic objective in Class II Div 2 treatment.