the tweed profile - The Charles H. Tweed International Foundation
the tweed profile - The Charles H. Tweed International Foundation the tweed profile - The Charles H. Tweed International Foundation
The second CBCT was repeated 10 months after the insertion of the two appliances; this interval was chosen by estimating 1 month for the activation and 9 months for the stabilization of the RME. Some variations should be imputed to the growth during this period, although the extent is assessable as non-significant 30, 31 . The type of expander employed was a Veltri “New REP” 23 without palatal arms to be able to examine skeletal effects and to avoid distorsions on results determined by tipping action on adjacent teeth. In the studied interval a significant palatal volume increase was achieved in both groups; when RME was anchored on permanent teeth a slightly higher variation was recorded (10.78% vs 9.89% on average). Mandibular molar decompensation phenomenon following the transverse maxillary expansion was first investigated by Lima et al. by means of plaster model measurements 32 . Until now, to our knowledge, no-one has investigated mandibular molar decompensation by means of volumetric tomoghaphy. In a recent study that used CBCTs, Kartalian et al. noticed a buccal dento-alveolar tipping of 5.6° following RME treatment: since buccal teeth inclination was unchanged between pre and post treatment (
REFERENCES 1. Thilander B, Wahlund S, Lennartsson B. The effect of early interceptive treatment in children with posterior cross-bite. Eur J Orthod 1984; 6:25-34. 2. Babacan H, Sokucu O, Doruk C, Ay S. Rapid maxillary expansion and surgically assisted rapid maxillary expansion effects on nasal volume. Angle Orthod 2006; 76: 66-71. 3. Adkins MD, Nanda RS, Currier GF. Arch perimeter changes on rapid palatal expansion. Am J Orthod Dentofacial Orthop 1990; 97:194-9. 4. Baccetti T, Mucedero M, Leonardi M, Cozza P Interceptive treatment of palatal impaction of maxillary canines with rapid maxillary expansion: A randomized clinical trial Am J Orthod Dentofacial Orthop 2009; 136:657-661. 5. Lagravere M, Carey J, Heo G, et al. Transverse, vertical and anteroposterior changes from bone-anchored maxillary expansion vs. traditional rapid maxillary expansion: a randomized clinical trial. Am J Orthod Dentofacial Orthop. 2010;137:e304–e312. 6. Ballanti F, Lione R, Fanucci E, Franchi L, Baccetti T, Cozza P. Immediate and post-retention effects of rapid maxillary expansion investigated by computed tomography in growing patients. Angle Orthod. 2009;79:24–29. 7. Haas AJ. Rapid expansion of the maxillary dental arch and nasal cavity by opening the mid palatal suture. Angle Orthod. 1961;31:73–89. 8. Berger JL, Pangrazio-Kulbersh V, Thomas BW, Kaczynski R. Photographic analysis of facial changes associated with maxillary expansion. Am J Orthod Dentofacial Orthop. 1999; 116:563–571. 9. Pangrazio-Kulbersh V, Wine P, Haughey M, Pajtas B, Kaczynski R. Cone beam computed tomography evaluation of changes in the naso-maxillary complex associated with two types of maxillary expanders Angle Orthod; 82(3):448-57. 10. Krebs A, Mid-palatal expansion studied by the implant method over a seven year period. Trans Eur Orthod Soc 1964;131-142. 11. Chung CH, Font B. Skeletal and dental changes in the sagittal, vertical, and transverse dimensions after rapid palatal expansion. Am J Orthod Dentofacial Orthop. 2004; 126:569–575. 12. Ladner PT, Muhl ZF. Changes with orthodontic treatment when maxillary expansion is a primary goal. Am J Orthod Dentofacial Orthop. 1995;108:184–193. 13. Da Silva Filho OG, Montes LA, Torelly LF. Rapid maxillary expansion in the deciduous and mixed dentition evaluated through postero-anterior cephalometric analysis. Am J Orthod Dentofacial Orthop. 1995;107:268–275. 14. Spillane LM, McNamara JA. Maxillary adaptation to ex- pansion in the mixed dentition. Semin Orthod. 1995;1: 176–187. 15. Brieden CM, Pangrazio-Kulbersh V, Kulbersh R. Maxillary skeletal and dental changes with Frankel appliance therapy. Angle Orthod. 1984;54:226–232. 16. Zhao Y, Nguyen M, Gohl E, Mah JK, Sameshima G, Enciso R. Oropharyngeal airway changes after rapid palatal expansion with cone-beam computed tomography. Am J Orthod Dentofacial Orthop. 2010 Apr; 137(4 Suppl):S71-8. 17. Christie KF, Boucher N, Chung CH. Effects of bonded rapid palatalexpansion on the transverse dimensions of the maxilla: a cone-beamcomputed tomography study .Am J Orthod Dentofacial Orthop 2010 Apr;137(4 Suppl):S79-85. 18. Garrett BJ, Caruso JM, Rungcharassaeng K, Farrage JR, Kim JS, Taylor GD. Skeletal effects of the maxilla after rapid maxillary expansion assessed with cone beam competed tomography. Am J Orthod Dentofacial Orthop. 2008 Jul;134(1):8-. 19. Baysal A, Karadede I, Hekimoglu S, Ucar F, Ozer T, Veli I and Uysal T. Evaluation of root resorption following rapid maxillary expansion using cone-beam computed tomography The Angle Orthodontist 2012; 82(3);488:94. 20. Baratieri C, Alves M Jr, de Souza MM, de Souza Araùjo MT, Maia LC Does rapid maxillary expansion have long-term effects on airway dimensionsand breathing?. Am J Orthod Dentofacial Orthop. 2011 Aug; 140(2)146-56. 21. Weissheimer A, de Menezes LM, Mezomo M, Dias DM, de Lima EM,Rizzatto SM Immediate effects of rapid maxillary expansion with Haas-type and Hyrax-type expanders; A randomized clinical trial, Am J Orthod Dentofacial Orthop, 2011 Sep; 140(3):366-76. 22. Gohl E, Nguyen M, Enciso R. Three-dimensional computed tomography comparison of the maxillary palatal vault between patients with rapid palatal expansion and orthodontically treated controls. Am J Orthod Dentofacial Orthop 2010; 138;477-85. 23. Veltri A, Maiolino A, Ferrari D, Veltri N. Nuovo dispositivo per l’espansione rapida del palato in dentatura mista. Mondo ortodontico 2010;35(4):187-192. 24. Cozzani M, Rosa M, Cozzani P, Siciliani G. Decidous dentition-anchored rapid maxillary expansion in crossbite and non-crossbite mixed dentition patients: reaction of the permanent first molar Prog. Orthod 2003; 15-22. 25. Becker A, Smith P, Behar R. The in- cidence of anomalous maxillary lateral incisors in relation to palatally- displaced cuspids. Angle Orthod 1981;51:24-9. 26. Walker L, Enciso R, Mah J. Three-dimensional localization of maxillary canines with cone-beam computed tomography. Am J Orthod Dentofac Orthop 2005;128:418-23. 27. Nakajima A, Sameshima GT, Arai Y, Homme Y, Shimizu N, Dougherty H Sr. Two-and three dimensional orthodontic imaging using limited cone beam-computed tomography. Angle Orthod 2005; 75:895-903. 28. Mischkowski RA, Pulsfort R, Ritter L, Neugebauer J, Brochhagen HG, Keeve E, et al. Geometric accuracy of a newly developed cone-beam device for maxillofacial imaging. Oral Surg Oral Med Oral Pathol Oral Radiol Endod 2007;104:551-9. 29. Lagravere MO, Carey J, Toogood RW, Major PW. Three-dimensional accuracy of measurements made with software on conebeam computed tomography images. Am J Orthod Dentofacial Orthop 2008;134:112-6. 32
- 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
- Page 12 and 13: The following records are those of
- 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 36 and 37: 30. Ricketts RM, Roth RH, Chaconas
- Page 38 and 39: DISCUSSION The described clinical a
- 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,
<strong>The</strong> second CBCT was repeated 10 months after <strong>the</strong> insertion<br />
of <strong>the</strong> two appliances; this interval was chosen<br />
by estimating 1 month for <strong>the</strong> activation and 9 months<br />
for <strong>the</strong> stabilization of <strong>the</strong> RME. Some variations<br />
should be imputed to <strong>the</strong> growth during this period,<br />
although <strong>the</strong> extent is assessable as non-significant 30, 31 .<br />
<strong>The</strong> type of expander employed was a Veltri “New<br />
REP” 23 without palatal arms to be able to examine skeletal<br />
effects and to avoid distorsions on results determined<br />
by tipping action on adjacent teeth.<br />
In <strong>the</strong> studied interval a significant palatal volume<br />
increase was achieved in both groups; when RME was<br />
anchored on permanent teeth a slightly higher variation<br />
was recorded (10.78% vs 9.89% on average).<br />
Mandibular molar decompensation phenomenon following<br />
<strong>the</strong> transverse maxillary expansion was first<br />
investigated by Lima et al. by means of plaster model<br />
measurements 32 . Until now, to our knowledge, no-one<br />
has investigated mandibular molar decompensation by<br />
means of volumetric tomoghaphy.<br />
In a recent study that used CBCTs, Kartalian et al.<br />
noticed a buccal dento-alveolar tipping of 5.6° following<br />
RME treatment: since buccal teeth inclination was<br />
unchanged between pre and post treatment (
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