the tweed profile - The Charles H. Tweed International Foundation

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DISCUSSION The described clinical approach allowed the mesially inclined mandibular molar to be uprighted in 19 weeks. Proper space was created for the prosthetic rehabilitation of the edentulous area. (Fig. 8, 9, 10, 11, 12, 13 and 14) This TAD based mechanics approach has proved to be an efficient method that allows the clinician to avoid undesir- able effects which can occur with conventional orthodontic appliances. No extrusion of the mandibular molar occurred because of the intrusive moment created by the miniscrew and the position of the button that was bonded to the mesial surface of the molar. CONCLUSION This case report illustrates the rational use of a TAD to simplify orthodontic mechanics, reduce treatment time and allow the clinician to reach a predictable and proper outcome. The result that was obtained can be achieved routinely without the risks of undesired tooth movements. Fig. 8 Fig. 10 Fig. 12 Fig. 13 Fig. 9 Fig. 11 REFERENCES 1. Block MS, Hoffman DR. A new device for absolute anchorage for orthodontics. Am J Orthod Dentofacial Orthop. 1995 Mar;107(3):251-8 2. Wehrbein H, Merz BR, Dietrich P. The use of palatal implants for orthodontic anchorage. Design and clinical applications of Orthosystem. Clin Or Impl Res 1996 Dec 7(4):410-6. 3. Melsen B, Petersen JK, Costa A. Zygoma ligatures: an alternative form of maxillary anchorage. J Clin Orthod 1998 32(3):154-8 4. Umemori M, Sugawara J, Mitani H, Nagasaka H, Kawamura H. Skeletal anchorage system for open-bite correction. Am J Orthod Dentofacial Orthop. 1999; 115:166–174 5. Kanomi R. Mini-implant for orthodontic anchorage. J Clin Orthod. 1997 Nov;31(11):763-7. 6. Melsen B, Costa A. Immediate loading of implants used for orthodontic anchorage. Clin Orthod Res. 2000 Feb;3(1):23-8. 7. Bae S.M., Park H.S., Kyung H.M., Kwon O.W., Sung J.H. Clinical application of Micro-Implant anchorage. J Clin . Orthod. 2002; 36:298-302 8. Deguchi T., Takano-Yamamoto T., Kanomi R., Hartsfield J.K. Jr., Roberts W.E., Garetto L.P. The use of small titanium screws for orthodontic anchorage. J. Dent. Res. 2003; 82:377-81 9. Carano A., Velo S., Incorvati C., Poggio P.M. Clinical applications of the Mini –Screw Anchorage System (M.A.S.) in the maxillary alveolar bone. Progr. Orthod. 2004; 5: 212-235. 10. Gracco, L. Lombardo, M. Cozzani, G. Siciliani. Quantitative cone-beam computed tomography evaluation of palatal bone thickness for orthodontic miniscrew placement. Am. J Orthod Dentofacial Orthop 2008; Vol.134, Num. 3: 361-369 W. C 11. H.S. Park et al . A Simple method of Molar Uprighting with Micro-Implant Anchorage. JCO OCT. 2002 VOL. XXXVI NUM 10: 592-96 12. S.W. Yun et al. Molar Control Using Indirect Miniscrew Anchorage. JCO NOV 2005 VOL XXXIX NUM11: 661-64 13. K.J. Lee, et al. Uprighting Mandibular Second Molars With Direct Miniscrew Anchorage. JCO MAY 2007 VOL XLI NUM 10: 627-35 55. 14. Zachrisson B. U., Bantelon H.P. Optimal mechanics for mandibular molar uprighting. Quintessence Int 2005: 80-87 15. Derton, A. Perini, R. Derton, G. Biondi. Orthodontic displacement of mandibular third molars using the orthodontic anchorage screw (OAS) system. Int. Orthod. Jun 2007- vol. 5: 129-141. Fig. 14 35
THE TWEED MERRIFIELD “SYSTEM” – INFORMATION IS IMPORTANT! KOHO HASE YOKODAI KAZO SAITAMA JAPAN E-MAIL: TORAHASE@YAHOO.CO.JP INTRODUCTION Since 1940, the Tweed technique, and later, the Tweed Merrifield force system, has been presented to the public through various meetings and programs. At the same time many other orthodontic techniques have been presented. Tweed Merrifield orthodontic treatment has been provided to patients in Japan for 17 years by the author. Satisfactory results have been achieved for most patients. Before and after facial photographs, lateral cephalometric X-rays and plaster casts have all played important roles in assessing the success of Tweed Merrifield technique. But mere illustrations of Tweed orthodontic treatment results do not provide enough information to patients who want to compare the Tweed Merrifield approach to other orthodontic techniques. Dr. Tweed’s concept of creating balance of the dentition and a beautiful facial profile has been called into question by some who espouse other techniques. MATERIALS AND METHODS Ninety two Angle’s Class I and II patients (46 in each sample) were examined. Lateral cephalograms and study casts were analyzed and measured. The cephalograms were taken either by traditional means and/or by digital radiography; the digitized images were created through use of the soft Google Sketchup 8 application provided free-of-charge on the Google website. Of 33 Tweed Merrifield treated patients, three or four have been randomly selected to be presented at past biennial Tweed meetings and at our annual Japanese Tweed meeting. These patient records were also used to survey the relationship of the lower lip to the esthetic line (E-line). Fig 1 Adobe Photoshop 7 was used to superimpose the before and after cephalometric images. The anima- More recently, there have been several turning points that have proved to be positive for spreading knowledge to patients about the Tweed Merrifield technique. • Data/results from treated patients who were treated with the Tweed Merrifield method (Hase Dental Clinic) show the positive effects of the chin’s response to the treatment. • Visual display of the lateral cephalometric superimposition of the jaw movement (clockwise or counterclockwise) is a positive development. • Showcasing images of those who have obtained improved facial profiles via a computer predicted personal image profile picture is very well received by patients. • Orthodontic movie illustrations are good tools that can be used to educate patients. Fig. 1 36
Page 1 and 2: THE TWEED PROFILE PUBLISHED BY THE
Page 3: CONTENTS 2 ORTHODONTICS IN THE AGE
Page 6 and 7: FACIAL ESTHETICS - A VALID TREATMEN
Page 8 and 9: the final result. Communication wit
Page 10 and 11: VERTICAL CONTROL FOR THE CLASS II P
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Page 14 and 15: This patient has crowding and is sl
Page 16 and 17: She was treated with Tweed-Merrifie
Page 18 and 19: This will Increase the Amount of In
Page 22 and 23: A .020 x .025 stainless steel T-loo
Page 24 and 25: for the other half (N=45) included
Page 26 and 27: tooth alignment. Long term stabilit
Page 28 and 29: RME ON PERMANENT VS RME ON DECIDUOU
Page 30 and 31: The “New REP” was retained for
Page 32 and 33: • Intercanine diameter: measured
Page 34 and 35: The second CBCT was repeated 10 mon
Page 36 and 37: 30. Ricketts RM, Roth RH, Chaconas
Page 40 and 41: tion effect was created by the shif
Page 42 and 43: ceptable and favored by the Japanes
Page 45 and 46: CORRECTION OF ADULT SKELETAL CLASS
Page 47 and 48: applied for 10 to 12 hours a day an
Page 49 and 50: TREATMENT RESULT The patient was tr
Page 51 and 52: Cephalometrically, there was a good
Page 53 and 54: REFERENCES 1. Zachrisson B, Alnaes
Page 55 and 56: The panoramic X-ray (Fig 3) shows n
Page 57 and 58: Fig 15 Fig 18 Fig 16 Fig 19 SUMMARY
Page 59 and 60: the rather short anterior-posterior
Page 61: Figure16 correction which, in turn,

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