last lecture for midterm

Question 1

1-proximal lesions

2-lesions in enamel

3-inactive lesion into dentin

4-active lesion into dentin

Answer 1

1-incipient + small E D1–apical to proximal contact area

2-remineralization & monitor

3-inacive= recall + mainteance & monitor

4-no cavitation= remin
cavitation= operative treatment

Question 2

1- preprep

2-interguard

3-cutting length of 245

4-cutting length of 220

5-amalgam

6-s curve

Answer 2

1-occlusion, anesthetic, & isolation

2-protect adjacent tooth w/ curl towards the prep

3-2.8 mm

4-2.0 mm

5- 90 degree margins, reverse or S curve

6- narrow isthmus & 90 cavosurface
if it were direct= margin that is less than 90 & weak

Question 3

1- 1st premolar curve

2-2nd premolar curve

3-enamel hatchet

4-axiopulpal line angle

5- 0.0015 matrix band

6-.001 matrix band

7-matrix circumference

Answer 3

1-significant reverse curve

2-lesser reverse curve bc proximal contact is near central groove

3-get rid of unsupported enamel at proximal margins

4-beveled/rounded w/ gingival margin trimmer
if not will cause stress in restoration

5-most common, used for amalgam

6-thin used for composite

7-matrix band smaller circumference towards gingiva

Question 4

1-wedge

2-filling

3-explorer

Answer 4

1-w/o wedge= potential for gingival overhang of amalgam

2-4.5 condensation, condensate in proximal box first w/ small condesor
use cone burnisher

3-after score around matrix band = occlusal embrasure & separate the amalgam from abdn