studies to know for exam

Question 1

wilson and majnard

Answer 1

they cautioned against violating BIOLOGICAL WIDTH - cautioned against extending restorations so far subgingivally that the attachment complex is damaged.

stated that “some distance of unprepared tooth structure should remain between the finished line and junctional epithelium and this distance should ideally be 0.5mm”

Question 2

stated that “some distance of unprepared tooth structure should remain between the finished line and junctional epithelium and this distance should ideally be 0.5mm”

Answer 2

wilson and majnard

Question 3

richter

Answer 3

WHEN THE CROWN MARGINS ARE WELL FITTED AND WELL CONTOURED
- supra gingival margin vs sub gingival margin ; there is NO DIFFERENCE IN

1. the health of the gingiva
2. the depth of the sulcus
3. the gingival contour
4. in plaque accumulation

Question 4

annerstad and norlander

Answer 4

dentists on average have a taper from 14.3 to 22.1

Question 5

parker, maxwell, woosley and matich

Answer 5

recors resistance with regard to convergance indicated

- different OC dimensions with different TOC’s

Question 6

parker, maxwell, woosley and matich - details

Answer 6

3mm is minimal OC dimension for premolars and anterior teeth that are prepared within the 10-20 degree TOC range

MOLARS = 4mm with greater convergence of the anterior and pre-molars

Question 7

parker, malone III and trier

Answer 7

evaluated resistance of prep
90 incisors = 96% had reitance

25 canine = 92 % had resistance

72 pre-molars = 81% resistance

107 molars = 46% resistance

***100% OF PREPS WITH BUCCAL OR LINGUAL GROOVES HAS RESITANCE FORM TO MESIAL DISTAL DISLODGMENT

100% OF PREPS WITH MESIAL OR DISTAL GROOVES HAD RESISTANCE FORM TO BUCCAL AND LINGUAL DISLODGMENT

Question 8

pascoe

Answer 8

made crowns and cemented them and checked thicness of cement line

crowns cemented to shoulder finish line fit bettern than the crowns that are fitted to shoulder with bevel

NO EVIDENCE THAT THE BEVEL WILL IMPROVE THE MARGINAL SEAL

Question 9

checkbite needed in order to set protrusive?

Answer 9

set condylar inclincation we need ___ postional checkbite?

PROTRUSIVE CHECKBITE

• END POINT OF PROTRUSIVE TO SET ANGLE

Question 10

laufer et al

Answer 10

need a 2mm sulcus – need enough width of sulcus for the impression material

affect of marginal thickness on the distortion of different impression materials

Question 11

details on pick up impression

Answer 11

will be a solid cast - no removable dies

will fit a soldered casting

will show the relation of the soft tissue to the casting for esthetic purposes as well as for the design of the pontic

must be correctly mounted for porcelain application

Question 12

removable dies in pick up impressions?

Answer 12

NO

Question 13

pick up impressions - what jerry said

Answer 13

great tools
impression of 8 and got margin but not adjacent tooth

so make substructure and then transfer impression

capture #9 in a new impression

same with frameworks that were cut – ONLY PFM’S

Question 14

pick ups with zirconia

Answer 14

NO

Question 15

emax must be

Answer 15

crystallized - not polishing it