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When adapted appropriately, thin ultrasonic tips provide excellent opportunities for access to root concavities and furcations areas.  The fluid lavage produced by ultrasonic instruments will disrupt unattached subgingival bacterial biofilm from the sulcus of pocket space. 

Proper angulation of the supragingival handpiece for anterior teeth is 

Lydia dos not lubricate her sharpening stone.  What is the major problem with not lubricating a sharpening stone?

Which of the following power settings is necessary for removing biofilm on a six-month recare patient? 

From what surfaces can you access the furcations on maxillary molars? 

When evaluated visually, a sharp cutting edge will;

Oral hygiene instruction should be initiated before the oral prophylaxis is started because the: 

Which of the following is NOT required for success instrument sharpening?

All of the following oral conditions contraindicate the use of air polishing with aluminum trihydroxide air-polishing except:

Lubrication of sharpening stones is important for all of the following reasons EXCEPT: