D3 Midterm Flashcards by Emily Caruso

What is the required spatial BL dimension for the placement of a posterior implant?

Middle of Ridge

Central Fossa of Posterior Tooth

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What is the required spatial BL dimension for the placement of a anterior implant?

Cingulum Area

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What is the required mm of surounding bones in the BL dimension for the placement of an implant?

2mm buccal

2mm lingual

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What is the required spatial MD dimension from root to implant?

1.5 mm

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What is the required spatial MD dimension from implant to implant?

3 mm

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What is the required spatial apico-occlusal dimension for placement of an implant?

3 mm from the CEJ

Allow for running room

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What type of Straumann implant is used for Molars?

4.8

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What type of Straumann implant is used for 2nd molars, anterior max incisors, and canines?

4.1

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What type of Straumann implant is used for laterals, and 1st pm?

3.3

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What type of Straumann implant is used for congenitally missing laterals with compromised bone?

2.9

Pt responsible for full price, but DMD can restore

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What number do all implant codes begin with?

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When does a provisonal code need to be added to the tx plan in fixed cases?

cases spanning #5-12

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What implant type is used in posterior areas?

Tissue level

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What implant type is used in the anterior area?

Bone Level

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With ridge preservation following an extraction, how long does the site need to heal before placing the implant?

heal 2 months

3-4 months to restore

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How long is required for healing following implant placement?

3 months

grafting adds more time: 4-5 months

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How much healing time is required after 2nd stage surgery?

2 weeks

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What is the ideal amount of keratinized tissue surrounding a healing abutment?

2 mm

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Is a screw, or cement-retained implant indicated when there is limited interocclusal space?

Screw-retained

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Is a screw, or cement-retained implant indicated when there is inadequate angulation?

Cement-retained

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What does a FGG include?

Epithelium + CT

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What does a subgingival restorative margin on an implant create?

Microgap = nidus for plaque and bacterial trap

attached gingiva prevents this

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What is platform switching, and what is its significance?

Wide implant + narrower abutment (mismatch in diameter)

Implants preserved more crestal bone than matched ones
- Except when < 2mm thin mucosal tissues were present
Has a horizontal BW component
- Prevents JE apical migration leading to crestal bone preservation

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What is the gold standard for root coverage?

Connective Tissue Graft

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What are the indications for FGG?

* Inc KT around teeth or implants * Inc vestibular depth * Augment ST thickness

What is the disadvantage to using Alloderm (Dermis Allograft)?

Not predictable for KT graft

Presence of .... KT and a .... biotype around implants is necessary for optimal plaque control and to prevent recession and spread of inflammation.

at least 3 mm KT Thick biotype

Which arch has a lower survival rate for OD?

Maxilla dec quality + quantity of bone

For a max OD what does the implant agulation follow?

Resorption pattern of bone

How many implants are needed for a maxillary od, and where are they placed?

Minimum of 4 implants * 2 in premaxilla (canine?) * 2 in posterior area (premolar)

What does the A-P Spread indicate?

* Distance from **center** of the most anterior implant to a line joining the **distal** aspect of the 2 most distal implants on each side. * Amount of cantilever that can be reasonably placed * Usually **2.5x A-P spread**

What is the prosthetic space required for a FDP OD?

7 mm

What is the prosthetic space required for a Hybrid OD?

12-15mm

What is the prosthetic space required for a Bar OD?

bar + clips = \> 15mm

What is the prosthetic space required for a locator OD?

10 mm

What is the implant position for a mandibular OD?

* As **anterior** as possible * As **distant** (far apart) as possible

When are multiple implants for a mandibular OD recommended? (5)

* Sensitive jaw anatomy * Increased occlusal force * High retention needs are present * When implants **length \< 8mm**, or implants **width \< 3.5 mm** are employed * Younger pts or edentulous pts \< 10 yrs old * Bone preservation

What is the prosthetic space measurement needed for OD?

\> 10 mm

What is the implant position for mand OD?

Between lateral and canine ## Footnote *Teeth position will determine the implant position - teeth set-up and try in*

When is a metal reinforced OD used?

* Thin dentures * Heavy occlusal forces ## Footnote *no significant success rate in dentures with adequate acrylic thickness + metal reinforced*

How is the locator height selected?

* 4 ST measurements: D, L, M, B * Pick the heighest tissue measurement = locator height selection * + 1mm in case of doubt

How much acrylic do you need to surround the metal housing?

**at least 2 mm of acrylic** should surround the metal housing to avoid denture fracture.

What is the vertical component of the Rule of 7?

* min 2 mm space for acrylic * 5 mm housing height

What is the horizontal component of the Rule of 10?

* 10 mm of denture thickness BL and MD * 2.5 mm of space for acrylic surrounding the housing (5 mm width) * 2.5 mm (acrylic B) + 5 mm (housing) + 2.5 mm (acrylic L) = 10 mm

What is the attachment selection for inaccurate, faulty implant position?

Bar design

What is the recall and maintence for OD pts?

at least every year

What part of the locator abutment, must be fixed in the denture, it carries the nylon insert?

metal housing

What part of the locator abutment is outside of the tissue, and a standardized part for all locators?

retentive part

What part of the locator abutment is inside the tissue, height varies based on tissue measurements?

Tissue height

What part of the locator abutment is implant company specific, implant type and size specific?

Connection

After provisional restorations are placed, how long is it necessary to wait to let soft tissues settle down?

at least 1 month

Where is the emergence profile measured on an implant?

**implant platform** to the **free gingival margin**

How big should the hole be created in the stock impressions tray per impression coping, for an open tray impression?

7 mm

What are the limiatations of the Maryland Bridge for a fixed interim restoration PRIOR to implant loading?

* Not easily removable for multiple surgical procedures * Failure due to occlusal interferences

What are the limiatations of the Provisional FDP for a fixed interim restoration PRIOR to implant loading?

* ONLY indicated when teeth adjacent to the implant site are planned for full coverage restorations

What are the limiatations of the Essix for a removable interim restoration PRIOR to implant loading?

* Can't eat with appliance in * Easily fractures * Short term only * Can lead to posterior open bite is pt wears it 24/7 for \> 3 months * Routinely evaulate pt for open bite

What is the main advantage of the Flipper for a removable interim restoration PRIOR to implant loading?

* Can be easily removed and modified for pts who require multiple surgical procedures * *Easy to fabricate* * *Inexpensive*

What are the limiatations of theFlipper for a removable interim restoration PRIOR to implant loading?

* Negative effect on pts **speech + comfort** * Must be removed while eating * **Uncontrolled tissue pressure** in healing bone augmentation sites * Must have **adequate interocclusal space** for prosthesis thickness + strength

What are the main characteristics of Jet Acrylic (PMMA) that we are concerned about?

* High exothermic rxn * High polymerization shrinkage

What are the main characteristics of Bis-Acryli (Integrity) that we are concerned about?

More brittle than PMMA

What is the healing time prior to implant loading in sites without bone augmentation?

3 months

What is the healing time prior to implant loading in sites with bone augmentation?

4-6 months

What is the healing time prior to implant loading in sites with sinus lift + bone augmentation?

6-9 months

What is surgical sculpting and how is it accomplished?

Site development for **non-implant sites** **Ovate pontic** placed into a recent extraction site or concavity in the ST covering the ednetulous ridge created by the surgeon.

What is non-surgical sculpting and how is it accomplished?

**After implant placement** * Through the use of: * Healing abutment * **Provisional restoration** * Most predicatable, stabilizes hard + soft tissues * Custom abutment * Definitive prosthesis

What is the limiation to a screw retained restoration in the anterior esthetic zone?

Must have lingual access hole

Which type of implant restoration allows you to use the abutment to retain the interim restoration?

Cement retained

What is the follow-up time after placing a provisional?

After **2 weeks** the surrounding tissues + papilla should be sculpted + matured to the contour of the provisional prosthesis.

D3 Midterm Flashcards

(68 cards)