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IP Indian Journal of Orthodontics and Dentofacial Research

Effect of Quad Helix appliance on maxillary constriction (holdway measurements)

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Author Details: Maher Fouda, Ahmed Hafez, Hawa Shoaib

Volume : 3

Issue : 3

Online ISSN : 2581-9364

Print ISSN : 2581-9356

Article First Page : 172

Article End Page : 175


Objective: to evaluate expansion changes by removable Quad helix appliance on soft tissues profile in growing patients.
Materials and Method: the present prospective clinical study consisted of fifteen subjects (8 girls and 7 boys) with cross bite due to constricted maxillary arch. Cases were selected to be treated for 8 months.
Results: No significant difference Soft tissue facial angle, H angle, SK profile convexity, Soft tissues chin thickness, Superior sulcus depth, Nose prominence and significant difference of Basic upper lip thickness and Upper lip thickness.
Conclusion: the effect of expansion by Quad helix appliance on soft tissue facial angle, H angle and profile convexity showed insignificant changes after the expansion period and significant change of upper lip thickness and Basic upper lip thickness.

Constricted maxilla, Expansion, Cross bite, Growing patients, Quad helix appliance, Soft tissues, Holdway measurements