Implantology > Abutment Selection > Flashcards

Abutment Selection Flashcards

(50 cards)

Study These Flashcards
1
Q

Screw-retained implant restoration

A
  • No abutment
  • Waxed on Gold Adapt UCLA
  • Access hole filled with teflon tape then composite
  • Advantages:
    • Retrievability
    • Better Limited Occlusal Height
    • No Cement
  • Disadvantages:
    • Compromised esthetics
      • composite doesn’t match porcelain
    • Chipped Porcelain
    • Implant Angulation
    • Altered Occlusal Contracts
    • Multi-units=not passive
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Cement-retained implant restoration

A
  • Cement Final Restoration
  • Abutment selection depends on:
    • Implant angulation
      • Severe→ Custom abutment
    • Platform depth
      • Deep→ Custom Abutment
    • esthetics
  • Abutment Finish Line ≤ 2 mm subg
  • Advantages:
    • Esthetics
      • no access hole
    • Easier to adjust occlusion
    • Correct Severely Angled Implants
    • Multi Units=Passive Fit
  • Disadvantages:
    • Retrievability
    • Excess cement
    • Not Used with Limited Restorative Space (8mm)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

How to avoid cement extrusion

A
  • Abutment finish line ≤ 2 mm sub-g
  • Use radio-opaque cement
  • Clinical & radiographic exam to check bone level or soft tissue inflammation
  • Use rubber dam
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Abutment classification:

A
  • Fabrication
  • material
  • Connection
  • Service Period
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Abutment Classification: Fabrication

A
  • Prefabrication (Stock)
    • straight or angled
    • Titanium or Zirconia
    • ONLY Cemented crowns
    • Variable cuff height for emergence profile
      • control depth of finish line subg
  • Custom
    • patient specific
    • Angled or deep implants
    • Esthetic Cases→Better emergence profiles
    • Waxed and Cast with Metal:
      • UCLA Gold Adapt:
    • Milled: CAD/CAM
      • Titanium
        • silver or gold
      • Zirconium
        • More esthetic→Thin Biotype
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Atlantis

A
  • patient specific abutments for all implant systems
  • Customized emergence profile
    • Double scanning
    • Splinted cases=Parallel Abutments
  • Gemini Abutment
    • Duplicate abutment
    • Titanium or Gold
    • used to finish final restoration in lab
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Abutment Classification: Material

A
  • Titanium
    • Stock or Custom
    • Color: Silver or Gold
    • High mechanical properties
      • made from titanium alloy
    • Cost Effective
  • Zirconium
    • Stock or Custom
    • Y-TZP is used
    • Most esthetic:
      • more than one shade
    • Less mechanical properties (Than titanium)
      • made in presintered state→ cannot adjust after sintering
    • Cost effective
  • Casted: (Custom abutment)
    • Anterior Crowns: Type III Gold
      • esthetic
    • Posterior Crowns: Type IV Gold
    • Non-Precious alloys should not be used with implants
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Abutment Classification: Connection

A
  • Engaging
    • engages fixture/crown
      • internal or external connection
    • glide path less forgiving
    • Uses:
      • single/splinted cement retained crowns
      • single screw retained crowns
  • Non-engaging
    • No engage
      • No internal/external connection
    • Glide path is more forgiving
    • Uses:
      • ONLY splinted screw retained
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Abutment Classification: Service Period

A
  • Healing Abutment:
    • after stage 2 implant surgery (Implant Uncovery)
      • Allows tissue to heal
        • prevents tissue closure
      • able to restore implant
    • taller than mucosa
      • different emergence profiles & heights
    • Color coded diameter
      • Green: 3.5 mm
      • Purple: 4.5 mm
      • Yellow: 5.7 mm
  • Temporary Abutment
    • Supports temporary
      • Titanium Or Plastic (Esthetic cases)
      • Engaging vs non-engaging
  • Definitive Abutment
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What are the Factors that Affect Abutment Selection?

A
  • Esthetics→ use a:
    • Cement retained design
    • Gold Type III Cast
    • Gold Plated Titanium or Zirconium Abutment → Thin Gingival Biotype
  • High Mechanical Requirement: for posterior region or FPD, use:
    • Metal (Titanium or Gold Type IV)
  • Implant Angulation
    • use cement design
    • Severe angulation→ Custom abutments to correct
  • Limited Restorative Space:
    • Screw Retained design
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Overdentures

A
  • removable denture prosthesis
    • covers & rests on ≥1 natural teeth, roots, or implants
  • Attachments
    • provides the fixation, retention, and stabilize the prosthesis
    • on teeth, roots or implants
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Tooth Supported Overdenture: Advantages vs disadvantages

A
  • Advantages:
    • Preserve:
      • alveolar ridge height
      • Proprioception (PDL mechanoreceptors)
    • Improves:
      • retention & stability with attachments
      • Denture support (vertical stops)
    • Less psych trauma-not all teeth are lost
    • Convertibility→switch to complete denture if teeth are extracted
  • Disadvantages:
    • Exposed Dentin→Increased risk for caries
    • RCT therapy
      • potential coronal leakage→ RCT failure
    • Canines→ Denture Flange irritates mucosa
    • Possible cementum failure
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Tooth Supported Overdenture: Indications vs contraindications

A
  • Indications:
    • poor candidates for surgery
      • radiation therapy
      • bisphosphonates
    • Financial constraints
      • can’t afford implants
  • Contraindications:
    • Tissue undercuts
    • Poor Manual Dexterity
    • No distribution of abutment teeth→poor prognosis
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Tooth Supported Overdenture: Abutment Teeth

A
  • Adequate
    • Perio health
    • endo therapy
  • 8-10 mm of restorative space
    • < 8mm →break denture
  • ≥ 5mm of root in bone
  • Location:
    • Anterior Mandible
      • Alveolar ridge most vulnerable to resorption
      • Canines or Premolars→ reduce adverse forces
    • At least one tooth per quadrant
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Tooth Supported Overdenture: Options

A
  • Tooth Supported Overdenture with:
    • no attachment
      • amalgam plug
      • gold casting
    • attachment
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Tooth Supported Overdenture with no attachment

A
  • Provide Support Only
  • Dome shaped abutment
  • Amalgam Plug
    • Direct Restoration→ Amalgam or Composite
      • requires 1mm supracrestal tooth
      • only provides coronal seal (access hole)
        • does not cover dentin
  • Gold Coping
    • Indirect Restoration
      • Tooth at Crestal ridge
      • Coronal & dentin coverage
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Tooth Supported Overdenture with attachment

A
  • Provide Retention & support
  • Direct or Indirect Restoration
    • Direct:
      • root is straight or 10-20° divergent
    • Indirect:
      • Root > 20° divergent
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Implant Supported Overdenture: Advantages vs Disadvantages

A
  • Advantages:
    • Preserve alveolar ridge height
    • Improves
      • retention & stability
      • support to denture (Vertical stop)
    • No dentin exposure, caries, decay, endo complications
    • Control implant locations
    • Less maintenance
  • Disadvantages
    • requires sufficient bone volume for implant placement
    • Financial constraints
    • No proprioception (No PDL mechanoreceptors)
    • Can’t undergo implant surgery (medically compromised)
    • Maxilla=4 implants
      • compromise peripheral seal<4
      • Canine
    • Mandible= 2 implants
      • canine & 2nd premolar
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

What are the different types of Attachment Systems used in over dentures?

A
  • Both used in Implant or tooth supported overdenture
  • Stud Attachment:
    • locator=most common
      • consists of 2 parts (male & female)
        • 1 attached to abutment
        • 1 attached to denture base
  • Bar Attachment:
    • Physical barrier goes b/w implants or natural teeth
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

Stud attachment Advantages vs disadvantages

A
  • Advantages:
    • Less restorative space needed
    • easier to clean and replace
    • auto aligns when placed
  • Disadvantages:
    • less stable
    • Limited implant angle correction
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Locator Abutment/Attachment

Study These Flashcards
A
  • most common stud attachment
  • adjust unparalleled implants
    • Regular vs extended range males:
      • regular:
        • if abutment is < 20° off
      • Extended range:
        • if abutment is > 20-40° off
  • multiple cuff heights (1-5mm)
    • Use thickest tissue level
    • allows retention groove to be at surpragingival height
22
Q

What are the two methods to attach the metal housing to the denture

Study These Flashcards
A
  • Direct Method
    • Place abutment
    • place metal housing
    • Try on denture & modify denture
  • Indirect Method:
    • take abutment height
    • registration in the impression
23
Q

What are the different parts of the Locator?

Study These Flashcards
A
  • metal housing
    • holds long insert
    • gives force
  • Nylon insert
    • attaches denture base to abutment
24
Q

Bar Attachment: Advantages vs disadvantages

Study These Flashcards
A
  • Advantages:
    • increased stability
    • Increased stress distribution
    • Fixes poorly placed implants
  • Disadvantages:
    • Hard to clean
    • More expensive
    • requires 13mm of restorative space
25
Implant Provisionalization: Advantages
* restore esthetics & function * extended period of use (Bone graft) * patient exerpience prosthesis before final restoration (expensive)
26
What are the provisionalization options before implant healing?
* Fixed Provisionals * Bonded bridge * “Ribbond or Everstick” * Temporary Fixed Bridge * Immediate Implant provisionalization * Temporary Implant retained provisional * Removable Provisionals: * Removable Partial Denture (RPD Flipper) * Complete denture * Essix retainer
27
Fixed Provisionals vs Removable Provisionals
* Fixed: * more comfortable * well tolerated * show how final prosthesis will look and feel * less bulky * Removable * Remove at night * Bulkier
28
Bonded bridge: General Info Advantages vs disadvantages
* Framework=Ribbond (Fiberglass) or Everstick * Advantages: * No transmucosal loading * Disadvantages: * requires special materials * Can't replace \>1 anterior tooth * Weak bond in: * wear cases→ due to lack of enamel * poor isolation * Can't use if: * Deep Bite * crowned adjacent teeth
29
Temporary Fixed Bridge: General Info Advantages vs disadvantages
* aka Tooth Supported Temporary Bridge * Advantages: * No Transmucosal loading * More resistant to dislodgment * Disadvantages * Have to prep adjacent teeth * Prepped teeth cannot be finalized until the implant is ready to be restored
30
Immediate Implant Provisionalization: General Info Advantages vs disadvantages
* Provisional placed immediately after implant placement * take tooth and hollow out→use as shell * Keep out of occlusion * can't use w/parafunctional habits
31
Temporary Implant retained provisional: General Info Advantages vs disadvantages
* Fixed Provisional * Mini Implants=Temporary Implants * holds temporary prosthesis * don't osseointegrate→ Easily Removed * Advantages: * takes the load off definitive implants * Disadvantages: * added expense * High stress area=Fracture
32
Removable Partial or Complete Denture General Info Advantages vs disadvantages
* Removable Provisoinal * tissue supported * Advantages: * cheap * convert to fixed temporary after implants are healed * if satisfactory=index for final prosthesis * Disadvantages: * Transmucosal loading * Bulky * Psychological trauma
33
Essix Retainer: General Info Advantages vs disadvantages
* teeth supported * No Transmucosal Loading * Disadvantages: * Breaks easily * Altered speech at beginning * Don't use when eating
34
What are the provisionals used after implant Healing?
* Cement Retained Provisional * Screw Retained Provisional
35
Cement Retained Provisonal: General Info Advantages vs disadvantages
* Temporary Abutment * Plastic Gasket “Coping” * Advantages: * More esthetic * Disadvantage: * can't use with Short Abutment * limited inter arch space * Excess cement in sulcus
36
Screw retained Provisional: General Info Advantages vs disadvantages
* No Abutment * Advantages: * Better for Limited Interarch space * Disadvantages: * No Angled Implants=Facial access hole
37
Implants: General Impression info
* after osteointegration * record all dimensions accurately * easier than natural teeth * but Less forgiving (No PDL)
38
Implant body
* Aka Implant fixture screw or cylinder * part of implant in bone
39
Impression Coping
* transfer implant position to cast * used during impression
40
Impression Analog
* Implant replica * used on the cast
41
Tight Contacts: (b/w implant & teeth)
* Increase stress * No PDL→ Never neutralized * prevent complete seating of restoration * Complications: * biological→ Bone Loss * Mechanical→ Screw Loosening
42
What are the different types of impression techniques for implants?
* **_Implant Level (deeper)_** * High Esthetic cases * Anterior Implants * Recreates gingival tissues * uses resin * Types: * **Open Tray** (Direct Coping Transfer) * Splinted vs Non-Splinted * **Closed Tray** (Indirect Coping Transfer) * **Customized Impression transfer technique** * **_Abutment Level (shallower)_** * use w/Solid Abutments * final abutment delivered and temporized * allows for healing to go ahead and start * Impression coping “clicks” onto abutment * Types: * Direct * Indirect * Digital Impression
43
Open Tray Impressure
* Implant level impression (Deeper) * **Direct Coping Transfer** * pick-up impression * Coping: * long retaining screw that goes through tray * unscrew when impression material set * Limits: * hard to seat inside mouth so that screw goes through hole * Posterior region (more difficult) * _Non-Splinted:_ * Copings: Not Connected * Limits: * Movement→inaccurate relationship of implants * _Splinted:_ * Copings: Connected w/resin or composite * Limits: * time consuming * technique sensitive * Material shrinkage
44
Closed Tray Impressions
* Implant Level impressoins (Deeper) * **Indirect Coping Transfer** * Limits: * Transfer process: * incorrect orientation * inaccuracies
45
Custom Impression
* Implant level impression * Modified open tray impression * **Esthetic Zone** * better emergence profile & soft tissue contours * Anterior Teeth emergence profile * supports soft tissue→ Superior esthetics * Rapid Tissue collapse after temporary crown is removed
46
Emergence Profile
* transition from circular implant diameter to restoration contours * “Running Room”
47
Custom Impression Transfer Technique
1. Unscrew Temporary Restoration 2. Screw Temp on analog 3. Place Temp/Analog in plastic cup filled with Bite Registration 4. Remove temporary (analog stays in bite registration) 5. Connect Impression Coping to Analog 1. fill gap b/w bite registration and coping w/autopolymerizing acrylic resin 6. unscrew customized impressions coping from analog 7. Seat Impression coping on implant intra-orally 8. Take impression
48
Abutment Level Impression
* Closed Tray Impression Technique * use with **Solid abutments** * Final abutment is delivered & temporized * allows healing to go ahead and start * Impression coping “clicks” onto abutment * Limits: * Prefab abutments can't be used with: * severe implant angulation * Deep implant platforms * Direct vs Indirect
49
Digital Impressions
* 2004 * coded healing abutment * provides 3D info on implant location to: * adjacent teeth * opposing dentition * soft tissue * Scan Body
50
Digital Impression: Scan Body
* translates implant position to digital file * same fxn as impression coping * require intraoral scanner (IOS) to collect data (point clouds=3D coordinates)
Implantology
flashcards
Decks in class (15)
# Cards
Brainscape helps you reach your goals faster, through stronger study habits.
© 2026 Bold Learning Solutions. Terms and Conditions