Dental hygiene care II final exam Questions & Answers 100% Correct.

Advantages of ultrasonic instruments - ANSWER-Increased efficiency of large calculus removal -Less time -Multiple surfaces of working end -Never need sharpening -Tips are replaced less often -Does not need lateral pressure -Reduced risk of repetitive strain injuries -Water lavage and irrigation may enhance healing and client comfort -Acoustic mainstreaming removes bacteria Disadvantages of ultrasonic instruments - ANSWER-Higher risk of burnished calculus if used alone -Unavoidable spray on cheeks and chin -Aerosol production -Temporary hearing shifts -Tinnitus -Loud noise -strong vibrations -Poor visibility -less tactile sensation Contraindications for ultrasonic instruments - ANSWER-lung and pulmonary disease -dysphagia Standard ultrasonic inserts - ANSWER-Moderate to heavy deposits -Oral biofilm -Extrinsic tooth stain -Orthodontic cement Universal ultrasonic inserts - ANSWER-Supragingival -Subgingival -Initial debridement of moderate to heavy non tenacious deposits Thin ultrasonic inserts - ANSWER-Periodontal debridement -Light deposit removal subgingival in shallow and deep pockets Precision thin inserts create more - ANSWERClinical attachment loss immediately after therapy Furcation ultrasonic inserts - ANSWER.8-mm ball ended Diamond coated inserts - ANSWERAre available for furcations and root planing; recommended for surgical procedures with direct vision due to risk of unintentional root surface removal Apply working end of magneto no more than - ANSWER15 degrees angle to tooth surface To prevent root surface damage, the piezoelectric tip must be angulated __________ - ANSWERas close to 0 degrees to the root as possible Health related outcomes of using ultrasonic instrumentation - ANSWER-equal reductions in microbial flora are found with the ultrasonic instrumentation and hand instrumentation -removing weekly adherent endotoxin -both types of ultrasonic instrumentation seem to be equally effective at the clinical endpoint in moderate calculus removal -produces large amounts of spatter and aerosols