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### 13 Cards in this Set

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 Angle? Two types? Angulation for Calculus Removal? -formed by two straight lines that meet at an endpoint -90 and 45 degree -more than 45 less than 90 Parallel Lines? Perpendicular Lines? Shank Position? -lines that run in same direction, never intersect -two lines that intersect to form a 90degree - parallel to the long axis of a tooth 3 Orientation of Lines? - vertical= up and down -oblique= corner to corner -horizontal= across a.k.a circumferential strokes Cross Section? - exposed by cutting through an object, usually at a right angle Millimeter? - one thousands of a meter or 0.0394inch - mm -anatomic features of teeth are often measured in mm Periodonatal Probe? Pockets Depth? - instrument similar to mini ruler - marked in mm units - used for making intraoral measurements -4mm or greater Long Axis? - imaginary straight line that pass through the center of a tooth and divides it symmetrically - long axis is used at reference point Apical? Coronal? - moved toward the tooth apex -moved toward the tooth crown Midline? Line Angles? - anterior tooth can be divided by this imaginary line -intrumentation of anterior is initiation of midline -posterior tooth can be divided -imaginary line formed where 2 tooth surfaces meet 4 Line Angles? -1. Mesiofacial line angle 2. Distofacial line angle 3. Mesiolingual line angle 4. Distolingual line angle Aspect? Two Kinds of Aspects, and subdivisions? - tooth, sextant, quadrant, or dental arch are divided into 2 Aspects -Facial= 3 areas. 1)distofacial 2)facial surface 3)mesiofacial area -Lingual= 3 areas 4)distolingual 5)lingual area 6)mesiolingual area Sextant? How many Anterior & Posterior? - dentition divided into 6 areas - 2 Anterior, 4 Posterior All Sextants? -1) Mixillary right posterior 2) Maxillary anterior 3) Maxillary left posterior 4) Mandibular left posterior 5) Mandibular anterior 6) Mandibular right posterior