Periodontal Instruments Flashcards
(13 cards)
1
Q
Mini Sickle (RED)
A
- A double ended point scaler with 2 cutting edges on each blade
- Used for buccal + lingual embrasure surfaces SUPRA-GINGIVALLY and within the pocket orifice
- Triangle cross section
2
Q
Columbia Curette 4R-4L (RED)
A
- A double ended universal curette with 2 cutting edges on each blade
- Used SUB-GINGIVALLY anywhere in the mouth but limited access to deep pockets
- Semi-circle cross section
- Blade angulation = 90 degrees
3
Q
Gracey Curette 1-2 (GREY)
A
- A double ended curette, each blade having a SINGLE cutting edge
- Designed specifically for fine/deep SUB-GINGIVAL scaling of upper and lower anterior teeth
- 110 degrees angle between lower shank and base of blade
4
Q
Gracey Curette 7-8 (GREEN)
A
- A double ended curette, each blade having a SINGLE cutting edge
- Specifically designed for fine/deep SUB-GINGIVAL scaling of buccal + lingual surfaces of posterior teeth
5
Q
Gracey Curette 11-12 (ORANGE)
A
- A doubled ended curette, each blade having a SINGLE cutting edge
- Specifically designed for fine/deep SUB-GINGIVAL scaling of mesial surfaces of posterior teeth
- Angle of 110 between lower shank and face of blade
6
Q
Gracey Curette 13-14 (BLUE)
A
- A double ended curette, each blade having a single cutting edge
- Specifically designed for fine/deep SUB-GINGIVAL scaling of the distal surfaces of posterior teeth
7
Q
Hoe Scaler 134-135 (YELLOW)
A
- A double ended instrument with single cutting edge
on each blade - Blade at 100 degrees to shank
- Cutting edge bevelled at 45 degrees
- Used for gross SUPRA+SUB-GINGIVAL on buccal + lingual surfaces
8
Q
Hoe Scaler 156 - 157 (RED)
A
- A double ended instrument with single cutting edge on each blade
- Blade at 100 degrees to shank
- Cutting edge bevelled at 45 degrees
- Used for gross SUPRA+SUB-GINGIVAL scaling on mesial + distal surfaces
9
Q
Disadvantages of a point scaler - Mini Sickle (2)
A
Deeper subgingival use is prevented by the sharp point of the sickle, which would tend to:
- Groove the root surface
- Lacerate the pocket wall
10
Q
Disadvantages of a hoe (2)
A
- Hoes are restricted in access by their bulk
- Must be properly seated to avoid gouging the root surface with the corner of the blade
11
Q
Disadvantages of the universal curette (2)
A
- If the blade is engaged at less than 45 degrees to the tooth surface the instrument will only slide over or burnish the deposit (calculus won’t be removed)
- If the blade is engaged at more than 90 degrees the lateral surface of the blade rather than the cutting edge will be against the tooth (failure to remove calculus and trauma to the soft tissue would result)
12
Q
Why does the Columbia have limited access to deep pockets?
A
Rounded tip makes it harder to remove large deposits of calculus
13
Q
Compare the grey Gracey and orange gracey
A
Orange gracey is more curved/rounded as its used on posterior
