Fixed Prosthodontic Lecture 13

Front 1

Where is the word Pontic derived from?

Back 1

-Latin, meaning bridge

Front 2

What is a pontic?

Back 2

-Artificial tooth on a fixed denture prosthesis that replaces a missing natural tooth, restoring it fx.

Front 3

What should be consider in relation to Biologic factor?

Back 3

-Cleansable tissue surface
-Access to abutment teeth
-No presure on ridge

Front 4

What should be consider in relation to Mechanical factor?

Back 4

-Rigid (deformation)
-Strong connectors (fracture)
-Metal-ceramic framework (procelain fracture)

Front 5

What should be consider in relation to Esthetic factor?

Back 5

-Shaped to look like a tooth
-Appears to grow out of edentulous ridge
-Sufficient space for porcelain

Front 6

What is the requirements of pontics?

Back 6

-Restoration of function & esthetics
-Oral hygiene
-Biologically acceptable

Front 7

What type of texture should pontic be?

Back 7

-Glazed or highly polished procelain and gold with a mirror-like finish

Front 8

Tissue contact of pontic should be active contacting on keratinized attached tissue (T/F)

Back 8

False: Should be passively contacting on keratinized attached tissue

Front 9

Describe the classificaiton of edentulous ridge deformities?

Back 9

-Class I: Loss of faciolingual ridge w/ normal apicocoronal height
-Class II: Loss of ridge height w/ normal labiolingual dimensions
-Class III: Loss of both ridge width and height

Front 10

What are the technique to management of available ridge?

Back 10

1. Socket preservation technique: bone graft
2. Full-thickness soft tissue grafts
3. Pouch procedure
4.Ridge augmentation
5. Immediate pontic technique
6. Orthodontic forced eruption

Front 11

Which ridge management technique involves subepithelial placement of CT graft from the tuberosity?

Back 11

-Pouch Procedure

Front 12

What are the pontic design classificaiton?

Back 12

1. Mucosal contact:
-Ridge Lap
-Modified Ridge Lap
-Ovate
-Conical
2. No Mucosal Contact:
-Sanitary (Hygienic)
-Modified Sanitary

Front 13

Ideal pontic should be designed as follows:

Back 13

-Surfaces smooth, well finished & convex in all directions
-Pin-point pressure free contact
-For posterior pontics --> Occlusal table shoul dbe harmonious with opposing teeth
-Emergence profile and pontic length should be harmonious with adjacent abutment teeth

Front 14

What is the indication and contraindication for Sanitary (Hygienic) pontic?

Back 14

-Good access for oral hygiene
-Indicated for posteiror mandibular teeth
-Contraindicated in esthetic zone or linted VDO

Front 15

What is the disadvantages for Sanitary (Hygienic) pontic?

Back 15

-Food entrapment
-Feels odd against tongue

Front 16

Describe the Sanitary pontic?

Back 16

-Not used often
-Convex undersurface
-All metal is preferred
-3mm thickness
-

Front 17

Described Modified Sanitary Pontic?

Back 17

-Gingival portion shape like an arch
-Concave MD
-Easy to clean
-Increased connector size
-Mechanical strength to prevent flexure

Front 18

Describe Ridge lap (Saddle) pontic?

Back 18

-Concave intaglio surface
-Proposed to enhance esthetics
-Not amenable to oral hygiene
-Not recommended

Front 19

Describe the Modified Ridge Lap pontic?

Back 19

-Overlaps the residual ridge on the facial side
-Clear the ridge on lingual side
-Recommended in highly esthetic location
-Moderately easy to clean
-Not enough air seal for speech
-Passive & compact contact on attche dgingiva
-Tissue contact look like a T from gingival aspect

Front 20

Describe Conical Pontic?

Back 20

-AKA Egg-shaped, bullet-shaped
-Limited use for thin ridges
-In molar w/o esthetic requirements
-Point contact w/ the ridge
-Convex surfaces
-Good access for oral hygiene

Front 21

Describe ovate pontics?

Back 21

-Most esthetically appealling design
-Used for max. incisors, canines, premolars
-High smile line
-Convex tissue surfaces
-Good emergence profile
-Accessible to oral hygiene

Front 22

Which type of pontic design require surgical preparation?

Back 22

-Ovate Pontic

Front 23

Does Ovate pontic have negative effect on gingival?

Back 23

-No, ovate pontic supported by good oral hygiene was NOT ass. w/ overt clinical signs of inflammation
-Histologically, pontic design ass. w/ thinner kertain layer and diff. composition of CT

Front 24

What is a Multiple pontic designs?

Back 24

-Pink porcelain to simulate interdental papilla
-Reduces the number of surfaces and complexity of restoration
-Improves accessibility to oral hygiene
-Reduces tongue toys

Front 25

What are some consideration in Tissue contacint Pontics?

Back 25

-Pontic length/width
-Location of finish lines
-Gingival embrasures
-Edentulous flange
-Lip support

Front 26

The increased of the ___ ___ may be attributed to the accumulated effects of hte presence of ____ ___ and ___.

Back 26

-Index values
-Subgingival margins and Pontics

Front 27

The increased in ___ ___ should mainly be ascribed to the prescene of ___ ___ ___.

Back 27

-Pocket depth
-Subgingival retainer margin

Front 28

What oral hygiene product is highly recommended to use w/ pontic?

Back 28

-Proxy brushes, Oral B-Super floss, Dental floss w/ a threader

Front 29

Contact tissue w/ pontic tips only when needed. If tissue contact is indicated, it should be ___, and limited to as little surface area as possible.

Back 29

-Passive

Front 30

Passive contact should occur on ___ ___ ___.

Back 30

-Keratinized Attached tissue

Front 31

___ ___ design should be avoided b/c the concave gingival surface of the pontic is not accessible to clean with dental floss.

Back 31

-Ridge Lap Design