Final Impressions/Border Molding

Question 1

What are the steps in complete denture fabrication?

Answer 1

Question 2

What is a complete denture impression?

Answer 2

a negative registration of the entire denture bearing, stabilizing, and border seal areas present in the edentulous mouth

Question 3

What is a preliminary impression?

Answer 3

an impression made for the purpose of diagnosis or the construction of a tray

Question 4

What do you need while making impressions?

Answer 4

a mental picture

Question 5

What is a minimal pressure impression?

Answer 5

attempt is made to exert as little pressure as possible during impression procedures

• object: capture tissues in their most undisturbed and undisplaced form

Question 6

What is another name for minimal pressure impression?

Answer 6

mucostatic technique

Question 7

What is a functional pressure impression?

Answer 7

impression made with the soft tissue under a significant load

• denture base tissue contact during function would be more intimate if tissue is recorded under compression

Question 8

What type of impression has very runny material?

Answer 8

minimal pressure impression

Question 9

What type of impression has more viscous material?

Answer 9

functional pressure impression

Question 10

What is a selective pressure impression?

Answer 10

dentist decides where and how much pressure to place on tissues

• pressure on certain areas
• minimal pressure on other areas

Question 11

What type of impression do we do?

Answer 11

selective pressure impression

Question 12

What holds the most pressure on the mandibular denture?

Answer 12

buccal ridge and retromolar pads

Question 13

How do you select areas of pressure and non-pressure within the same impression?

Answer 13

1. wax spacer relief
2. drill vent holes in tray
3. grind the tray for relief space
4. comination of the above

Question 14

Why use a custom tray?

Answer 14

borders can be modified to control the movable soft tissues around the impression and avoid distorting them

Question 15

What is the purpose of border molding?

Answer 15

purpose is to define denture border in length, width, shape, and contour

• when completed should resemble anticipated denture border

Question 16

What are the green stick compound and water bath temps for border molding?

Answer 16

green stick - 123 F
water - 135-140 F

Question 17

How many mm of space are present betwen vestibular reflection and tray border while bolder molding the maxillary?

Answer 17

2 mm

Question 18

For the maxillary border molding on the buccal frenum area what should you do?

Answer 18

elevate cheek, lightly massage outward, down, and anteriorly

Question 19

For the maxillary border molding on the labial vestibule what should you do?

Answer 19

elevate lip outward, massage downward

Question 20

For the maxillary border molding on the labial frenum what should you do?

Answer 20

elevate lip, seat tray
lightly massage lip straight down

Question 21

For the maxillary border molding on the poserior palatal border what should you do?

Answer 21

have patient pinch nose and blow lightly through nose and then swallow

Question 22

For the mandibular border molding on the lingual frenum area what should you do?

Answer 22

• gently wet upper lip with tip of tongue
• place tip of tongue under upper lip side to side

Question 23

For the mandibular border molding on the alveololingual sulcus what should you do?

Answer 23

patient swallows or protudes tongue but not past the lips

Question 24

For the mandibular border molding on the mylohyoid region what should you do?

Answer 24

• patient swallows forcefully 2 or 3 times
• tongue touches buccal vesibules and thumb by the handle

Question 25

For the mandibular border molding on the distal border and masseteric notch what should you do?

Answer 25

• patient stretches wide open
• patient closes against manual pressure

Question 26

For the mandibular border molding on the buccal frenum what should you do?

Answer 26

massage cheek outward, upward, inward/anterior-posterior