Maxillary incisor protrusion can be treated by
1. premolar extraction with orthodontic retraction of the incisors.
2. premolar extraction with surgical repositioning of the anterior dentoalveolar segment.
3. extraction of the incisors, alveoloplasty and prosthodontic replacement.
4. reduction and genioplasty
(1) and (3)
(1) (2) (3)
(2) and (4)
(4) only
All of the above.
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