Case report shows effective maxillary distalization using IZC screws in Class II malocclusion, suggesting improved treatment outcomes when avoiding extractions.
Background: Management of Class II malocclusion often requires maxillary distalization. Conventional methods are limited by anchorage loss, patient compliance, or dental side effects. Infrazygomatic crest (IZC) screws provide absolute anchorage and enable efficient full-arch distalization. Case Presentation: A 19-year-old female presented with a convex facial profile, Class II molar relationship, and proclined maxillary incisors. Non-extraction management was planned using IZC screws for en-masse distalization of the maxillary arch. IZC screws were inserted bilaterally between the maxillary first and second molars at the infrazygomatic crest region. 220 g of force was applied per side for distalization. Over 12 months, full-arch distalization was achieved, molar relation was corrected to Class I, and incisor proclination was reduced. Conclusion: IZC screws provided reliable anchorage for en-masse distalization, simplifying biomechanics, avoiding extractions, and improving facial esthetics. They represent an effective treatment option for Class II correction when non-extraction therapy is indicated.
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Shetty et al. (2025) studied this question.
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