Soft tissue and dentoskeletal profile changes associated with maxillary expansion and protraction headgear treatment

Peter Ngan, Urban Hägg, Cynthia Kar Yung Yiu, Daniel Merwin, Stephen H.Y. Wei

American Journal of Orthodontics and Dentofacial Orthopedics · 1996 · 190 citations · 41 references

Concepts

References

41