CLASS V

Cavity prep:-
¤ Extension determined by Caries extension, follow gingival contour.
¤ Occlusal and gingival walls ー arc shaped - Both parallel to each other
¤ Occlusal arc will be longer than gingival arc
¤ Pulpal floor ー convex shape ( to preserve the center of the tooth which is having close proximity to the pulp)
¤ 2 line angles names :- Occlusoーaxial line angle & Gingivoーaxial line angle- retentive grooves [Not Rounded]
¤ Best restorative ー Direct filling Gold - due to its high biocompatibility
¤ Composite ー microfilled – able to get high polishability
¤ After GIC restoration, thin flush is removed by scaler or knife immediately or finishing stone later

Q. The Carat of gold foil used for direct filling restorations is 24.

ROOT CARIES
○ Actinomyces
○ No shape ー caries extension determines the margin of cavity preparation
○ Gingival recession will promote senile caries.
○ Best material ー GIC
○ Old ppl ー RMGIー aesthetic area