the tweed profile - The Charles H. Tweed International Foundation

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The “New REP” was retained for 9 months in order to ensure some bone formation. NewTom 3G VGI with an effective dose of 50.2 ml Sievert 28,26 was employed to obtain a scan. The settings were the following: field of view, 12 in; 110 kV (AP-LL); 2.00 mA (AP) and 1.00 mA (LL); exposure time, 5.4 seconds and section thickness, 0.50 mm. The volumetric data was imported in the NewTom 3G software and converted in the DICOM format. The software Osirix (v.3.9.1) was used to perform linear and bidimensional measures (followed by a volumetric reconstruction). • Space volume between mandibular first molars (volumetric evaluation of inferior molar decompensation): creation of areas on 5 consecutive slices between mandibular first molars using lingual dental surfaces and mandibular inner cortical bone as references. Osirix Software computed the volume with the aid of a mathematic algorithm (Fig. 5- Fig. 6) All measures were classified as volumetric, skeletal or dental. VOLUMETRIC MEASURES • Palatal volume: creation of areas on coronal slicing, using the CEJ as the vertical reference and the PNS as the posterior one. Osirix Software calculated the palatal volume with the aid of a mathematic algorithm (Fig. 3- Fig. 4) Fig. 5: Area traced on a coronal slice for airway volume between mandibular first permanent molar reconstruction Fig. 3: Area traced on a coronal slice for palatal volume reconstruction Fig. 4: Palatal volume reconstruction by Osirix (v.3.9.1) software Fig. 6: Airway volume between mandibular first permanent molar reconstruction by Osirix (v.3.9.1) software SKELETAL MEASURES Transverse skeletal diameter measured on axial slices at canine (apex) and molar (mesiovestibular root apex) level until the end of buccal cortical bone (Fig. 7- Fig. 8) • Mandibular alveolar bone thickness: measured both at apex and furcation height as the distance between the external cortical bone and the inner one (Fig. 9) • ANS-PNS: distance between anterior and posterior nasal spine measured on sagittal slices (Fig. 10) 27
• Palatal vault height: measured on sagittal slices using as a reference a line passing through the central incisor CEJ and parallel to the bispinal plane (Fig. 11) Fig. 7: Transverse skeletal diameter measured on axial slices at canine (apex) DENTAL MEASURES: • Maxillary first molar inclination with respect to the nasal base horizontal plane (Fig. 12) • Mandibular first molar inclination with respect to the nasal base horizontal plane (Fig. 13) Fig. 8: Transverse skeletal diameter measured on axial slices at molar (mesiovestibular root apex) Fig. 11: Palatal vault height Fig. 12: Maxillary first molar inclination with respect to the nasal base horizontal plane Fig. 9: Mandibular alveolar bone thickness, measured both at apex and furcation height Fig. 13: Mandibular first molar inclination with respect to the nasal base horizontal plane Fig. 10: ANS-PNS 28
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 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 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,

the tweed profile - The Charles H. Tweed International Foundation

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