References 1. 2. 3. 4. 5. 6. 7. 8. 9. Angle EH. Some new forms of orthodontic mechanism and the reason for their introduction. Dental Cosmos 1916;58:969-994. Angle EH. The latest and best in orthodontic mechanism. Dental Cosmos 1929;71:164-174, 260-270, 409-421. Lisher BE. Principles and methods of orthodontics Philadelphia: Lea &Febiger; 1912. Kingsley NW. Oral deformities. New York: Apleton & Son; 1880. Andresen V. Beitrag zur retention. Z. Zahnartsl Orthop. 1910;3:121. Robin P. Observation sur un nouvel appareil de redressement. Rev Stomatol Chir Maxillofac 1902;9:423. Terry HK. The labiolingual appliance. Am J. Orthod 1969;55:714-733. Mershon JV. A practical talk on why the lingual arch is applicable to the orthodontic problem. Dent. REc 1926;46:297 -301. Oliver OAaW, , C. R. Lingual, labial appliances and guide plae. Internat. J. Orthodont. 1932;18:1182-1190. 20. Michiels LYFaT, L.P.M. Nasion true vertical: a proposed method of testing the clinical validity of cephalometric measurements applied to a new cephalometric reference line. Int. J. Adult Orthodontic Surg. 1990;5:43-52. 21. Lundstrom FL, A. The Frankfort horizontal as a basis for cephalometric anal-ysis. Am. J. Orthod. 1995;107:537-546. 22. Lundstrom FL, A. Natural head posture as a basis for analysis. Am. J. Orthod. 1992;101:244-247. 23. Harvold EP. The Activator in Interceptive Orthodontics. St. Louis: C.V. Mosby Co.; 1974. 24. Cooke MS, Wei, S.H.Y. A summary five factors cephalometric analysis based on natural head posture and the true horizontal. Am. J. Orthod. 1988;93:213-223. 25. Cooke MS, Wei, S.H.Y. Nasion true vertical: a proposed method for testing the clinical validity of cephalometric measurements applied to a new cephalometric line. Am. J. Orthod. 1988;93:280-288. 26. Holdaway RH. A soft tissue cephalometric analysis and its use in orthodontic treatment planning, Part I. Am. J. Orthod. 1983;84:1-28. 27. Holdaway RH, op. cit. A soft tissue cephalometric analysis and its use in orthodontic treatment planning, Part II. Am. J. Orthod. 1984;85:279-293. 28. Creekmore TM. Where teeth belong and how to get them there,. J. Clin. Orthod. 1997;30:586-608. 29. Alvarez A. The A Line: A New Guide for Diagnosis and Treatment Planning. J. Clin. Orthod 2001;35:556-569. 30. Casko JS, Shepherd, W.B. Dental and skeletal variation within the range of normal. Angle Orthod. 1984;54:5-17. 31. McNamara JA, Ellis, E. III. Cephalometric analysis of untreated adults with ideal facial and occlusal relationships. Int. Adult Orthod. Orthogn. Surg. 1988;3:221-231. 32. Ricketts RM, et al. Bioprogressive Therapy. Denver: Rocky Mtn Orthodon-tics; 1979. 33. Gleick J. Chaos, Making a New Science. NY, NY: Viking Penguin Group; 1987. 34. White LW. Modern Orthodontic Diagnosis, Treatment Planning and Ther-apy. Glendora, CA: Ormco Corp; 1996. 35. Burstone CJ. Lip posture and its significance in treatment planning. Am J Orthod 1967;65:262-284. 10. Shepard EE. The philosophy of the twin-wire appliance. Am J. Orthod 1969;55:688-704. 11. Johnson JE. A new orthodontic mechanism: the twin wire alignment appli-ance Internat. J. Orthodont. 1934;20:946-963. 12. Mulligan TF. Common Sense Mechanics in Everyday Orthodontics. Phoenix, AZ: CSM Publishing; 1998. 13. Melsen B, , Fiorelli, G. Biomechanics in Orthodontics. Arezzo. Italy: Libra Ortodozia; 1995. 14. Alexander RG, Steffen, J.M., Haltom, T. The Readers Corner. J. Clin. Orthodontics 1987;21:524-529. 15. Begg PRaK, P.C. Begg orthodontic theory and technique. Philadelphia: W.B. Saunders Co.; 1977. 16. Begg PRaK, P.C. The differential force method of orthodontic treatment. Am J Orthod 1977;71:1-39. 17. White LW. A Pragmatic Cephalometric Analysis. Dallas; 2008. 18. Showfety KJ, Vig, P.S., Matteson, S. A simple method for taking natural head position cephalogram. Am. J. Orthod. 1983;83:495-500. 19. Moorees CFA, Kean, M.R. Natural head posture, a basic consideration in the interpretation of cephalometric radiographs. Am. J. Phys. Anthropol. 1958;16:213 -234. 32 January/February 2011 JAOS