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level: Hand Instruments

Questions and Answers List

level questions: Hand Instruments

Question	Answer
What area/s is a Gracey 1-2 used for	All surfaces of anterior teeth
What area/s is a Gracey 3-4 used for	All surfaces of anterior teeth
What area/s is a Gracey 5-6 used for	All surfaces of anterior/premolar teeth
What area/s is a Gracey 7-8 used for	Buccal and lingual surfaces of posterior teeth
What area/s is a Gracey 9-10 used for	Buccal and lingual surfaces of posterior teeth
What area/s is a Gracey 11-12 used for	Mesial surface of posterior teeth
What area/s is a Gracey 13-14 used for	Distal surface of posterior teeth
What shape is the gracey curet in cross section	Semi-circular
What shape is the universal curet in cross section	Semi-circular
What shape is the sickle scaler in cross section	Triangular
The end of a Curet is called a	Toe
The end of a Sickle Scaler is called a	Tip
A hand instrument is composed of three parts	Handle, shank and blade
The working end of a sickle scaler is divided into thirds, these are called	Heel, middle and toe
A gracey curet is also known as an	Area Specific Curet
The working end of the instrument is joined to the handle by the	The functional shank
True or false: When using a sickle scaler, we use firm overlapping strokes.	True
True or false: When using an explorer, we use gentle, slow and overlapping strokes.	True
The perio probe that we use in clinic is the	UNC15
True or false: When using the perio probe, we use short, bobbing strokes.	True
Up to how many millimetres does the UNC-15 periodontal probe measure?	15
How many points around a tooth does the periodontal probe measure?	6
True or false: The periodontal probe is activated by 'walking' around the tooth	True
How much of an instrument's working end should we adapt to a tooth's surface 1/3, 2/3 or 3/3 ?	1/3
When using hand scaling instruments what are the three directions of strokes used?	vertical, oblique and horizontal
True or false: Assessment strokes can be used with probes, explorers and curets	True
True or False: Calculus removal strokes are firm and short	True
The instrument shank is made up of what 3 parts?	functional shank, terminal shank and working end
(In the correct order) What are the 3 A's?	Adaptation, angulation and activation
Which part of the instrument needs to be parallel to the long axis of the tooth	Terminal shank
When using the sickle scaler and universal curet what degrees do we adapt the instrument to	70
Which modified gracey has an extended lower shank with a working end that is 10% thinner	After 5
Which modified gracey has an extended lower shank with a working end that is 10% thinner and 50% shorter	Mini 5
Which modified gracey has an extended lower shank with a working end that is 10% thinner and 50% shorter, an identification mark and a raised band at 5mm and 10mm	Vision Curvette