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DHG 130 - Exam 2 CH 39 Instruments and Principles for Instrumentation
This deck covers key concepts and terminology related to dental instruments and principles for instrumentation, including types of strokes, instrument parts, and specific techniques.
Sequence of instruments for treatment?
11/12 Explorer Ultrasonic Scaler Universal Curet Area Specific/ Gracey (Used for fine scaling/root planning)
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Key Terms
Term
Definition
Sequence of instruments for treatment?
11/12 Explorer Ultrasonic Scaler Universal Curet Area Specific/ Gracey (Used for fine scaling/root planning)
Types of strokes by direction?
Diagonal or Oblique Vertical Horizontal
Why do we not use a fulcrum on mobile teeth?
Because you do not have stability on mobile teeth and can cause further damage to an already weaken periodontium.
What instruments are used for an examination?
Probe, Explorer, and mirror
What instruments are used for treatment?
Curets and Scalers
Term; Relationship between the working end of an instrument and the tooth surface being treated?
Adaptation
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| Term | Definition |
|---|---|
Sequence of instruments for treatment? | 11/12 Explorer Ultrasonic Scaler Universal Curet Area Specific/ Gracey (Used for fine scaling/root planning) |
Types of strokes by direction? | Diagonal or Oblique Vertical Horizontal |
Why do we not use a fulcrum on mobile teeth? | Because you do not have stability on mobile teeth and can cause further damage to an already weaken periodontium. |
What instruments are used for an examination? | Probe, Explorer, and mirror |
What instruments are used for treatment? | Curets and Scalers |
Term; Relationship between the working end of an instrument and the tooth surface being treated? | Adaptation |
Term; A curved, rounded dental instrument utilized for scaling, root planning, and gingival curettage? | Curet |
Term; A specialized instrument designed with specific angles in the shank for adaptation to a certain group of tooth structures? | Area-Specific Curet |
Term; A curet designed for use on any tooth surface where the adaptation, angulation and other principles of instrumentation can be correctly and effectively accomplished? | A Universal Curet |
Term; For an intraoral rest, the place on a tooth or teeth where the third or ring finger of the hand holding the instrument is placed to provide stabilization and control during activation of the instrument? | Finger Rest |
Term; Use of a dental mouth mirror to view the area of instrumentation. Indirect lighting is provided by the mirror? | Indirect vision |
Term; The minimal pressure that is required of an instrument against the tooth to accomplish the objective of the assessment or treatment? | Lateral Pressure |
Term; The blade of an area-specific gracey curet in which the lower shank is at 70 degree angle to the face of the blade; contrasts with a universal curet blade, which is at a 90 degree angle with the lower shank | Offset Blade |
Term; Instrument designed for initial removal of calculus, prior to finishing with a curet? | Scaler |
Term; The part of the shank next to the blade? | Lower or terminal Shank |
Parts of an instrument? | Working End, Shank and Handle |
Why do is Hollow handles preferred compared to solid handles? | Because they have enhanced tactile sensitivity and lessen fatigue |
Surface texture; Handles may be smooth, ribbed, or knurled is called? | Serrations |
T/F Serrations are for control and comfort without muscle fatigue, a smooth handle is avoided | True |
What type of handle do you want? | Serrated Hollow instrument |
T/F Straight shanks are used for Anterior(unrestricted) and Angled shanks are used for Posterior (restricted) | True |
T/F In general, the more restricted the tooth access, the more angled the shank is used | True |
T/F Heavier shanks are stronger and able to withstand greater pressure without flexing. They are needed for heavier calculus removal. | True |
T/F Less rigid, more flexible shanks provide more tactile sensitivity and are used to remove fine deposits | True |
T/F A finger rest is ALWAYS used when instruments are applied to the teeth and gingiva. | True |
What does adaption of a gracey give you? | Gives you access to get into a pocket better. | Longer shank, Shorter blade |
What is the modified pen grasp? | A three finger grasp with a specific target points of the thumb, index finger and middle finger all in contact with the instrument. |
How much of the blade is used during instrumentation? | 1/3 or last 3mm of blade |
On a universal curet, the face of the blade is at what degree to the_? | 90 | lower shank |
Area specific/ Gracey curets are what angle to the lower shank? | 70 |
What are the objectives of a Finger Rest? | Stability Unit Control Prevention of injury Comfort for the pt Control of length stroke |
What are the four diameter handles available? | 3/8 5/16 1/4 3/16 |
What is separable from the shank and working end. They permit instrument exchanges and replacements? | Cone socket |
T/F Principles for instrument use; Stability is essential for effective, controlled action of an instrument | True |
What are the causes of carpal tunnel? | Brought on by pressure on the median nerve in the carpal tunnel, is one of the nerve entrapment conditions that results from inappropriate work habits, such as working with a bent wrist |
What is the working end of an instrument? | The part used to carry out the purpose and function of the instrument. Each working end is unique to the particular instrument. The working end of a scaler or curet is the BLADE. |
What are problem areas for adaptation? | Line angles convex and rounded surfaces (narrow roots) Cervical Area (root is constricted) Proximal root surfaces (concave, longitudinal grooves) |
Form the back of the instrument? | Lateral surface |