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MMP
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The three-dimensional (3D) angle between the palatal line and the mandibular plane; maxillary-mandibular plane angle.
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MP/SN
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The 3D angle between the line S-N and the mandibular plane
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Y axis angle
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The 3D angle between y-axis and Frankfurt horizontal plane
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Facial height ratio
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The ratio of lower to total facial height
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Lower facial height
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The distance between the anterior nasal spine (ANS) and the Menton (Me)
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SNA
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The angle between the points S, N, and A
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Effective maxillary length
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The linear distance between the Condylion and A points
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SNB
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The angle between the points S, N, and B
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effective mandibular length
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The linear distance between the Condylion and the Gnathion points
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The angle between three landmarks: A, N, and B
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SN/occlusal plane
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The angle between the line passing from sella turcica to nasion and the occlusal plane
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U1 AP position
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The horizontal distance between the incisal edges of the upper central incisors and the frontal plane, as viewed from the sagittal view.
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U1 vertical position
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The linear distance from the midroot of the upper incisors to the FHP, as viewed from the sagittal view
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U1 inclination
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The angle formed between the frontal plane and the upper right and left central incisor long axes, as viewed from sagittal view
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U6 AP position
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The linear distance between the mesio-buccal cusp tip of UR6 and the vertical plane, as viewed from the sagittal view.
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U6 vertical position
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The linear distance between the furcation area of the upper right first molar to the FHP, as viewed from the sagittal view.
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L1 inclination
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The angle formed between the frontal plane and the lower incisors long axes, as viewed from the sagittal view
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L1 AP position
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The horizontal distance between the incisal edges of the lower incisors and the frontal plane, as viewed from the sagittal view.
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L1 to NB line
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The horizontal distance between the incisal edges of the lower incisors and the NB line, as viewed from the sagittal view
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L1 vertical position
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The linear distance from the midroot of the lower incisors to the mandibular plane, as viewed from the sagittal view
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L6 vertical position
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The linear distance from the furcation points of the lower right first molar to the mandibular plane, as viewed from the sagittal view
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L6 AP position
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The linear distance between the mesio-buccal cusp tip of lower left first molar and the vertical plane, as viewed from the sagittal view.
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