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Clinic1 - Ch13&14
| Question | Answer |
|---|---|
| Angulation Def? What is needed to accomplish this? | Angulation is the relation between the face of the working-end and the tooth surface. Visualization is needed by the clinician with the working-end hidden beneath the gingival tissues. |
| Insertion def? | Insertion is the act of gently sliding the working-end beneath the gingival margin into the sulcus or periodontal pocket. |
| What is the angulation degree for insertion? | 0 degree, then open to 40 degrees. (0-40) |
| What is the Get Ready Zone? What does it allow? | middle-third of the crown. The Get Ready Zone allows you to position the working-end in preparation for instrumentation. |
| How do you correct select the right working end? | To select the correct working-end, observe the relation of the lower shank to the distal surface of the tooth. The lower shank should be parallel to the distal surface. The functional shank goes up and over the tooth. |
| After youre in the get ready zone with your instrument, what is your next move? | Lower your hand and the handle until the face is hugging the tooth surface at a 0-degree angle to the tooth. |
| When your instrument goes beneath the gingival margin, what should be hugging the root surface? | The face |
| 3 steps for insertion | 1. Place working-end in Get Ready Zone. 2. Lower instrument handle so that the face hugs the tooth near to a 0-degree angulation. 3. Gently insert the working-end beneath the gingival margin and slide the face along the root surface. |
| Stabilization def? Purpose? What does the fulcrum finger act as? | Stabilization is the act of locking joints of ring finger and pressing fingertip against tooth surface;;Provides control of instrumentation stroke Fulcrum finger functions as “support beam”;; |
| How is lateral pressure created? | Created by applying pressure with index finger and thumb inward against instrument handle |
| Amount of lateral pressure... Assesment | Assessment—requires light touch against tooth |
| Amount of lateral pressure...Calculus removal | Calculus removal—firm lateral pressure against tooth |
| Amount of lateral pressure...Root debridement | Root debridement—less lateral pressure than calculus removal |
| 6 Steps for Calculus Removal | 1. Employ a light assessment stroke over root surface; 2. Position curet apical to deposit; 3. Cup the deposit with face of curet; 4. Reassess grasp; 5. Lock toe-third against tooth; 6. Activate stroke opening face to 70- to 80-degree angulation |
| To what degrees should you open your instrument when removing calc? Tilt the instrument where? | 70- to 80-degree angulation; Establish an 80-degree angulation by tilting the lower shank toward the facial surface. |
| 2 Characteristics of Calculus Removal Stroke? | Brief, tiny, biting stroke used to snap a calculus deposit from tooth; Moderate pressure applied against the tooth during each brief, tiny stroke |
| 2 Purposes of Root Debridement | Remove subgingival plaque biofilm; Remove residual calculus deposits or surface irregularities |
| To what degrees should you open your instrument when root debridement? Tilt instrument where? | Tilt the lower shank toward the tooth to establish a 60- to 70- degree angulation. |
| Root debridement strokes? | Make a light, shaving stroke.; This stroke is lighter and longer than a calculus removal stroke; Used with curets; Light pressure is applied against the tooth surface during this stroke. |
| Burnished calc... how is this done? | Removing deposits in layers instead of sections. |
| How should calc be removed? | Large calculus deposits should be removed in sections. Removing the outermost layer will leave the deposit with a smooth surface. |
| 2 bad Effects of Burnished Calculus? | Burnished deposits are more difficult to detect and to remove.; Burnished deposits retain plaque biofilms that are associated with continuing inflammation of periodontal tissues. |
| Angulation Errors ... Tissue injury? | Angulation greater that 90 degrees: tissue injury |
| Angulation Errors... Burnished calc? | Angulation less than 45 degrees: burnished calculus |
| Instumentation zones... | Think of the root surface as having “zones” that are as wide as the toe-third; Use removal strokes in a series of these “zones” or narrow tracts.; Remove all calculus deposits from one tooth before moving to a second tooth. |
| Sickle Scaler Def? Where should it NOT be used? | A periodontal instrument used to remove calculus deposits from the crowns of the teeth; Should NOT be used on root surfaces |
| 4 Unique Design Characteristics of a SS | Pointed tip and back; Triangular in cross section; Two cutting edges per working-end; The face of a sickle scaler is perpendicular to the lower shank. |
| Anterior scaler design | Anterior sickles—often single-ended; may have two different sickles on a double-ended instrument |
| Posterior scaler design | Posterior sickles—usually two sickles paired on a double-ended instrument; working ends are mirror images |
| What are SS used for? | Removal of medium- to large-sized supragingival calculus deposits; |
| Anterior SS: face and lower shank angle? | The face of the working-end is at a 90-degree angle to the lower shank. |
| Anterior SS: Incorrect design? | Positioning the lower shank parallel to the tooth surface creates an incorrect face-to-tooth angulation of 90 degrees. |
| Anterior SS: Correct angulation (2 things) | Correct angulation is achieved by tilting the lower shank toward the tooth surface. ; This creates a face-to-tooth surface angulation of 70 to 80 degrees. |
| Anterior SS: Remember... | Remember: “Me, My patient, My light, My mirror, My grasp, My finger rest, My adaptation” |
| Anterior SS: Where do you position the instrument tip to begin scaling? Tilt? | Position the tip-third of the working-end near the midline of the tooth. Tilt the lower shank toward the tooth surface to establish correct angulation. |
| What is the correct Instrumentation of proximal surfaces adjacent to papillary gingiva ... | cutting edge against proximal tooth surface |
| Posterior SS: Method for which is the working end? | Establish a finger rest.; Place working-end in the Get Ready Zone of the distal surface. ;; Use the lower shank as a visual clue. Lower shank is parallel to the distal surface; Functional shank goes up and over the tooth |
| Posterior SS: Angulation degree? Tilt towards what? | 70-80 degrees; Correct angulation is achieved by tilting the lower shank toward the tooth surface. |
| Posterior SS: Design of face and shank? | The face of the working-end is perpendicular to the lower shank. |
| How many cutting edges are on a posterior SS? | 4 |
| Posterior SS: Starting postition? | Position the tip-third of the working-end at the distofacial line angle.; Work back toward the distal surface. |
| Posterior SS: repostition? tilt? | Reposition at the distofacial line angle with the tip “facing” forward.; Tilt the shank toward the tooth surface. |
| Primary teeth: enamel difference? | Primary crowns have rougher enamel surfaces and cementoenamel junctions |
Created by:
katiestokes