Orthodontics · single question
Orthodontic case: maxillary central incisors flared forward, maxillary lateral incisors erupted palatally, maxillary canines erupted high buccally, mandibular hypodontia (1-2 incisors), molar occlusion in neutro-occlusion (Class I). What malocclusion does this patient have?
Show answer and explanation
Correct answer: D. Class II Division 1
- A. While the molar relationship itself is Class I (neutro-occlusion), the overall described incisor flaring/protrusion pattern is classified by the incisor relationship as Class II Division 1, a key distinction in orthodontic classification (molar relationship vs. overall malocclusion descriptor based on incisor position can differ).
- B. Class III is characterized by mandibular prognathism/anterior crossbite tendency, inconsistent with the protrusive maxillary incisor pattern described.
- C. Class II Division 2 features retroclined (upright/lingually inclined), not flared, maxillary central incisors — the opposite of this case's description.
- D. Correct, per the source material. Despite a Class I molar relationship, the overall malocclusion is classified as Class II Division 1 based on the flared/protrusive incisor relationship described.