Periodontal instrumentation (final review) Flashcards
Seating position for surfaces towards:
8:-9:00
Seating position for surfaces away:
11-12:00
What is the seating position exception?
Maxillary anterior facial may be completely done at 11-12:00
Anterior sickle scaler should only be used:
supragingivally
How should shank/handle of an anterior sickle scaler be held?
parallel to long axis of tooth
Describe the stroke used with an anterior sickle scaler?
short & overlapping strokes
Where should you begin on the tooth when using an anterior sickle scaler:
Begin at midline and into interproximal
Describe the instrument design of an anterior sickle scaler:
-straight rigid shank
-two cutting edges on each working end
-pointed tip (hence “sickle”)
The anterior sickle scaler tip is _____ in cross section
triangular
What portion of the anterior sickle scaler is used for calculus removal?
terminal 1/3 (tip)
When adapting the anterior sickle scaler, the shank & handle should be:
parallel to the long axis of the tooth
What is the proper angulation (cutting edge against the tooth) for an anterior sickle scaler?
45-90 degrees
Overangulation (greater than 90 degrees) of an anterior sickle scaler will result in:
burnished calculus and/or tissue laceration
Underangulation (less than 45 degrees) of an anterior sickle scaler will result in:
burnished calculus
Light grasp, minimal pressure stroke (similar to perio explorer)- when using an anterior sickle scaler is called:
Exploratory stroke
When using an anterior sickle scaler, the act of tightening the grasp and applying lateral pressure to the tooth on the coronal stroke is called:
working stroke
What is the difference in design between the anterior & posterior sickle scaler?
Posterior sickle scaler has a complex shank (additional bend)
Where can a posterior sickle scaler be used?
Posterior teeth, supragingival interproximal areas (may go SLIGHT subgingival)
How should the terminal shank be held of a posterior sickle scaler?
parallel to long axis of tooth
Describe the stroke used with a posterior sickle scaler:
short & overlapping strokes
Where should you begin on the tooth when using a posterior sickle scaler?
Begin at line angle & work interproximal (no buccal or lingual surface)
What is the purpose of a periodontal explorer?
detection of subgingival calculus
Describe the working strokes of a periodontal explorer:
short, walking, overlapping strokes
The terminal shank of the periodontal explorer should be:
held parallel to long axis of tooth
Where on an anterior tooth should you begin when using a periodontal explorer?
Midline
When using a periodontal explorer-
In anterior _____ is parallel to long axis of tooth
In posterior ____ is held parallel to long axis of tooth
handle
terminal shank
In what situation would you FLIP a periodontal explorer?
in anterior