Fig. 26 “I have found Horseshoe Jet types of appliances to be extremely effective in correcting symmetric and asymmetric Class II malocclusions in the late adolescent and adult dentition cases. I currently use the Newby/ Anderson Distalizer.” 5. Greenfield, Raphael L. DDS, MSCD. Non Ex Factors. 98.5% Nonextraction Therapy using Coordinated Arch Development. DaehancNarae Publishing, Inc. Seoul, South Korea; 2010. 6. www.dentalline.de/fileadmin/assets/documents/pdf/ Prospekte/PSM_BENEFIT_04-12.pdf 7. www.drborthodontics.com/types-of-appliances 8. https://dynaflex.com/laboratory-services/herbst-appliances Fig. 27 sions when the line of force is occlusal to the COR of the maxillary first molar (Fig. 4B). Excessive tipping of the molars results and the untoward effects of heavy and lengthy Class II mechanics previously discussed will result. This article concludes the discussion about the Six Keys in early Class II mixed dentition correction. This series of articles was inspired by the Six Keys to Early Mixed Dentition Class II Correction: A Quantified Approach to Diagnosis and Treatment article written by Dr. Leonard Carapezza, DMD. 2 My goal in writing these articles is to help other doctors, particularly the ones starting out in orthodontics, continue to add to their knowledge toolbox. If I have accomplished this, then I have succeeded. 9. www.hsorthodontics.co.uk/multi-distalizing-arch 10.http://www.thermadent.co.uk/sites/all/themes/ther-madent/images/thermadent-orthodontic-laboratory-prod-ucts/twin-blocks.jpg 11.http://www.medcollege.hu/de/downloads/Andrews_ 1972_The_six_keys_to_normal_occlusion.pdf 12.Mulligan, T.F. Common Sense Mechanics in Everyday Orthodontics II, 2012. 13.Ortho Organizers. 1822 Aston Avenue. Carlsbad, CA 92008. 1-800-547-2000. www.orthoorganizers.com 14.Newby, Randy K., DDS. Exploring the First Two Keys of Class II Correction:Maxillary Arch Development and Maxillary Molar Position. Journal of the American Orthodontic Society; Fall 2014. 15.Newby, Randy K. DDS., Key Six in Early Late (Permanent) Mixed Dentition Class II Correction: Distalization Mechanics Part 1. JAOS Fall 2016, pg 8-13. 16.Nicassio, Ralph, DDS. Differential Diagnosis of all Class II and Class III Cases for the Experienced Practitioner. An AOS Sponsored Education Series. 17.Witzig, John W., Spahl, Terrance J. The Clinical Manage-ment of Basic Maxillofacial Orthopedic Appliances: Volume I Mechanics. PSG Publishing Company, Inc, Littleton, MA. © 1987. References 1. Anderson, Jerry. Anderson Orthodontics, Inc. Laboratory. 4318 W. Central, Wichita, KS 67212, Box 48745, Wichita, KS 67201. 316-942-8703/Fax 316-942-6315/800-456-1954 2. Carapezza, Leonard J., DMD. Six Keys to Early Mixed Denti-tion Class II Correction: A Quantified Approach to Diagnosis and Treatment. Journal of American Orthodontic Society; Spring 2014. 3. DENTSPLY GAC Professional. 1301 Smile WayYork, Pa 17404-0807 Phone: 800-989-8826 4. Drescher, Dieter, DMD, PHD, et. al. Correction of Upper-Arch Asymmetries Using the Mesial-Distalslider. JCO; Nov 2013 p 648-655. 14 Winter 2017 JAOS