calculus and scaling Flashcards
1
Q
suprag vs subg calculus
A
suprag: heterogenous layers, less mineral content 37%
Subg: homogenous, 58% mineral
2
Q
How long does calculus take to for
A
t1/2 in 2 days, mineralisation complete in 12 days
3
Q
Does ultrasonic scaler hurt tooth structure
A
enamel is safe unless CEJ/demineralised areas
root surface: removes less cementum than hand instruments
need water coolent if not kenna pulpitis
DO NOT put on restorations later it fly
DO NOT scratch titanium impant abutments
4
Q
Patient has pacemaker
A
DO NOT use magnetostrictive scalers
