IMPLANT FINAL review questions

osteoclasts and osteoblasts

what is requirerd to achieve proper bone healing after implant placement

0.05

 

During bone formation after implant placement Vascular Penetration rate in the cortical bone is ____ mm/day 

D

 

 Secondary Integration:

A. Is the process when initial bone matrix around the implant is replaced with mineralized bone 

B. Is impacted by the implant surface characteristics 

C. Could be influenced by the patient’s general health status 

D. all of the above

true

T/F Surface energy is an important factor related to implant osseointegration. Acid etching and anodic oxidation are two examples of surface treatment to create increased surface energy 

e

 If an implant is place too close to a natural tooth 

A. The threads could damage the periodontal ligament causing irreversible damage to the tooth 

B. There will not be adequate space for the papilla 

C. It could be difficult to properly design/fabricate the implant restoration 

D. It could be difficult for the patient to maintain proper hygiene in that area 

E. all the above

E

When planning for an implant treatment, the student should always 

A. Have recent study cases and panoramic/full mouth series radiographs 

B. Do a surgical consult after discussing the case with an implant advisor 

C. Provide information to the patient about treatment cost, timeline and restorative procedures and enter the planned treatment in AxiUm 

D. Make sure the patient’s medical history is reviewed and updated 

E. all the above

esthetic zone

The OPEN tray impression technique is recommended when restoring implants in 

C

After completing impression making for a PFM single implant crown in the anterior area, student should: 

A. Make sure the analog is secured to the impression coping before sending the case to the lab 

B. Pour the impression him/herself and evaluate the master cast before sending it to the lab 

C. Let the lab pour the impression and have them return the master cast with full contour wax up for evaluation of cervical contours, occlusion and esthetics 

D. Let the lab pour the impression and directly fabricate the final restoration 

1-1.5

Stone modeling contouring should allow for at least ____mm of soft tissue between adjacent tooth and implant restoration 

false (blue first)

T/F To make it easier for the patient to remove and seat the OD after delivery, Clear nylon locator inserts are always recommended to start with 

E

Radiographic base line examination is performed immediately after the final restoration has been permanently connected to the implants to:

B. Verify that abutment screw is properly tightened 

C. Verify there are no porous defects in the restoration 

D. Evaluate bone healing around the apical part of the implant 

E. Check seating of restoration and document marginal bone level for future comparisons 

F. all the above

true

T/F The restorative dentist is responsible for selecting the implant system for the patient 

true

T/F A screw retained implant crown is preferred when restoring a missing molar 

false

T/F There is evidence a screw retained crown is a better option in general compared with a cement retained 

D

 A custom abutment can be fabricated in 

A. Gold Alloy 

B. Zirconia 

C. Titanium 

D. all the above

false

T/F According to the recent literature presented, occlusal overload of an implant supported restoration always lead to progressive bone loss around the implant and eventual implant loss 

true

T/F When you return a case to the lab after stone model contouring, you can normally have the custom abutment and abutment supported crown fabricated without additional try-in 

true

T/F When choosing a ceramic abutment, the final impression MUST be poured with silicone soft tissue moulage around the implant/abutment connection 

B

A provisional implant restoration in the esthetic zone is normally recommended because 

A. It facilitates chewing 

B. It can be used for tissue manipulation to achieve ideal gingival architecture prior to fabrication of the final restoration 

C. It prevents occlusal dysfunction 

D. It hastens the osseointegration process 

E. ALL OF THE ABOVE 

hand tightened

When seating an anterior single unit PROVISIONAL implant restoration The abutment screw should only be:

4 units anterior or posterior

The UWSOD allows students to restore multi-unit restorations Up to:

false

T/F A tissue level implant supported molar crown normally tends to have a less risk of food impaction around the soft tissue-crown junction when compared to a bone level restoration 

B

What is the current protocol when fabricating mandibular implant overdentures in the UW predoctoral clinic 

A. Prior to approaching the implant advisor, the student should discuss and plan the case/implant placement with Grad perio/OMS and start fabricating new dentures for the patient 

B. Student should provide the patient with new dentures first and after evaluations of the dentures discuss the implant procedures with the implant advisor 

C. Student should plan for and have the implants placed piror to fabricating new dentures 

D. None of the above. 

false

T/F Gum tissue recession is less likely to occur around cemented restorations

tissue contouring and esthetic evaluation

When restoring a missing maxillary central incisor with an implant you should always 

Fabricate a provisional restoration for:

C

A bar to splint 2 implants in the mandible should be considered 

A. When the implants are placed posterior to the position of the canines 

B. When the immediate loading protocol is used 

C. To enable an axis of rotation when the implants are placed in different anterior posterior position 

D. Because it provides a better retention compared to 2 separate abutments 

E. All of the above 

D

When using two separate implants to support an overdenture in the mandible, the denture 

A. May be designed with less extended base and flanges compared to a conventional denture since the implants will help support the denture 

B. Should always be designed with a metal substructure to avoid fractures 

C. Should always be made after the implants have been placed 

D. Should always be fully extended and have proper stability 

D

Locator abutments

A. Can only be used to retain an overdenture in the mandible 

B. Should always be lightened with a maximum of 25Ncm torque force 

C. Can only be used with Straumann System Implants 

D. May be used even if the implants are not perfectly parallel 

E. All of the above 

false

T/F Fixed hybrid implant prosthesis in the edentulous maxilla always provides the patient with sufficient lip and facial support 

e

The locator abutment system 

A. Requires that you remove the healing abutment and measure the soft tissue height before ordering the abutment 

B. Offers sveral types of nylon inserts with variable retentions 

C. Is exclusively used for mandibular overdentures at UWSOD 

D. Will not compensate for poor denture stability/fit 

E. All of the above 

1.5-2

A custom abutment Should be designed to allow for ____mm occlusal clearance 

B

IN what situation could a complete arch fixed implant prosthesis be reommended as the idea treatment option 

A. Patients with severe alveolar bone loss 

B. Patients who have minor alveolar bone loss 

C. Patients who have impaired motor functions 

D. Only for patients with natural teeth in the opposing arch 

E. None of the above 

e

What clinical factors are important to evaluate when planning for treatment with dental implants 

A. The amount and quality of bone in the area of implant placement 

B. Occlusion 

C. Vertical and horizontal space 

D. Patient’s oral health status 

E. All of the above 

poor (soft) bone quality

When would a tapered implant be preferred over a parallel sided? 

more

The pink nylon Locator insert: 

Provides _____ retention than the blue insert 

prevent composite material from covering abutment screw

For a screw retained implant crown it is recommended that first plug should be placed on top of the abutment screw head prior to the placement of resin filling in the access hole to: 

false

T/F UW students are able to restore a single implant supporting 2 units 

b

The black male processing insert for the Locator abutment system 

A. Is used to provide permanent retention of the denture 

B. Is used to protect the abutment from excess acrylic during pick up procedure 

C. Is used only to stabilize the denture during pick-up procedure 

D. Should be removed from the metal housing before the excess acrylic is removed from the denture base 

E. None of the above 

d

When you deliver a complete arch fixed implant prosthesis you typically 

A. Hand tighten the abutment/prosthetic screws and check for passive prosthesis fit 

B. Check and adjust occlusion if needed 

C. Seal screw access holes with first plug and Fermit/other temporary filling material and let the patient try the new prosthesis for a week 

D. All of the above 

d

Why is it critical to apply only a thin layer of cement when seating an implant restoration supported by a custom abutment 

A. Too much cement will result in excess below the margin/finish line and it could be difficult to remove 

B. Excess cement could result in peri-implant infection 

C. There are no horizontal fibers preventing the cement penetrating deep ino the sulcus between the mucosa and the abutment 

D. All of the above 

c

For a custom abutment in the esthetic zone, the buccal margin should be placed 

A. 2-3 mm subgingival 

B. At the gum line 

C. 1-1.5 mm subgingival 

D. 1 mm supragingival 

a

When cementing a crown supported by a custom abutment 

A. The abutment screw access hole should be sealed with only first plug barrier/(PTFE) material

B. Not necessary to seal abutment screw access hole 

C. An amalgam restorations should always be placed to allow for proper seal of the abutment screw access hole 

D. first plug barrier/(PTFE) material with Fermit/provisional restorative material on top to seal the abutment screw access hole. 

a

 Guided surgery 

A. Improves the precision and overall treatment outcomes 

B. Can only be done in partially edentulous patients 

C. Is only available for Nobel implants 

D. All of the above 

c

 When using computer software in the planning for implant treatments 

A. No CBCT is needed 

B. It is not possible to determine if bone grafting is needed 

C. You can decide exactly what position you want to place the implant in 

D. Only tissue level implants can be used 

a

 When a student is delivering a permanent cement retained crown in the predoctoral clinic, student should 

A. Alert the instructor to check fit, occlusion, proximal contacts and esthetics after which the instructor should monitor the tightening of the abutment screw with the wrench prior to cementation 

B. Tighten the abutment screw first using the wrench and then alert the instructor to check the crown before cementation 

C. Tighten the abutment screw first and seal access channel and cement the crown before alerting the instructor 

b

When making an impression for a single implant restoration, student should 

A. Inject low viscosity VPS impression material around the impression coping and use putty material in the tray 

B. Inject medium or high viscosity VPS impression material around the impression coping and use the same impression material in the tray 

C. Inject low viscosity VPS impression material around the impression coping and use high viscosity VPS impression material in the tray 

D. Inject medium or high viscosity VPS impression material around the impression and use putty material in the tray 

d

 When restoring implants in the anterior zone, what will determine successful esthetic outcome? 

A. Position/angulation of the implant 

B. Soft tissue biotype 

C. Amount/height of soft tissue above the implant platform 

D. All of the above 

d

 What determines if you should splint two implant restorations placed side by side in the posterior area? 

A. Esthetic considerations 

B. Occlusal relation upper/lower arch 

C. Hygiene aspects 

D. Biomechanical considerations 

E. Posterior implant restorations should always be splinted 

false

Stabilizing pins are required to securing surgical guides for edentulous as well as single implant cases 

false

T/F Student may proceed with a surgical consult directly after discussing the treatment with the patient and then provide a restorative treatment plan 

c

The UW protocol for mandibular implant overdenture treatment includes 

A. Using a bar to splint 2 implants 

B. Two implants placed posterior to the mental foramina 

C. Two un-splinted implants placed anterior to the mental foramina 

D. Four implants placed between the mental foramina 

E. None of the above

false

T/F Guided surgery does NOT require a CBCT 

true

T/F When making occlusal records for a fixed implant supported prosthesis, a major advantage is that the occlusal rim can be secured to implants with screws 

3 mm

When planning for placing two implants side by sie in the bicuspid area, the distance between the implants should be about 

1.5 mm

The distance between an implant and an adjacent tooth should not be less than __

true

T/F for implants suffering from peri-implant disease First, determine the etiology of the disease and then determine the best possible treatment to address the etiological factors causing the disease 

false

T/F Maxillary implant overdentures should always have full palatal coverage design 

true

T/F Gingival Fibers around implants are arranged differently compared with those around teeth and are mainly circular 

e

To avoid damages in the bone during surgical implant placement you should always 

A. Use low speed not exceeding 1000 rpm 

B. Use copious irrigation 

C. Sharp drills 

D. Move the drill in and out of the osteotomy to removed debris and cool the drill 

E. All of the above 

several months

The time it takes for the body to replace all necrotic bone after implant placement with new fully mineralized bone is normally 

false

T/F for soccessful implants there should be marginal bone loss exceeding 1.5 mm after the first year 

true

T/F Primary integration means how well the implant is mechanically anchored to the bone immediately following surgical placement 

nobel

Which of the implants used at the UW does NOT have a dual acid etched surface? 

true

T/F A hydrophilic implant surface means that it has a strong affinity for liquids 

false

T/F Engaging abutments should always be used for a screw-retained multi-unit fixed prosthesis 

f

Achieving a successful esthetic outcome when restoring an edentulous site in the anterior maxilla depends on 

A. Depth of the implant 

B. Buccal lingual position of the implant 

C. Mesial/Distal position of the implant 

D. Soft tissue biotype 

E. Diameter of the implant 

F. All of the above 

c

Indications for treatment with implant supported fixed prostheses include patients with 

A. Severe ridge resorption 

B. Class III occlusion 

C. Dry mouth 

😩 all the above

true

T/F When doing the pick-up impression to secure the metal housing in an overdenture, the Locator system black processing insert should always stay in until removal of the excess acrylic and polishing is completed 

true

T/F Peri implantitis is when there is a progressive bone loss around the implant and is non-reversible but sometimes correctable 

true

T/F The total inter-occlusal space/distance recommended for a bar retained mandibular OD is about 12-14 mm 

b

Which statement below is MOST CORRECT regarding the amount of normal remodeling of the dental alveolar crest after dental implant placement? 

A. Normal remodeling does not occur until 1 year after the restoration or prosthesis is placed 

B. Remodeling of the crest occurs more initially, then diminishes to less than 0.1-0.2 mm annually 

C. Remodeling of the crest occurs less initially, then progress to approximately 0.5mm annually 

D. Remodeling fo the alveolar crest only occurs in cases of peri-implant disease 

true

T/F Socket preservation is always recommended after tooth extraction if the site is planned for an implant 

a

Which of the following is TRUE for hydroxyapatite 

A. it is osteoconductive

B. it is osteoinductive

C. it induces new bone formation

D. all the above

osteogenesis

new bone formation from osteo-competent cells

d

Which of the following materials can be used to fabricate frameworks for complete arch implant-supported fixed prosthesis 

A. Noble alloy 

B. Titanium 

C. Zirconia 

D. All of the above 

at least 4

How many implants are normally required for implant overdenture treatment of the edentulous maxilla 

e

What are the benefits of using implants for the support of an RPD 

A. Improved denture stability/retention 

B. Improved chewing ability 

C. Improved patient comfort 

D. Reduced bone resorption 

E. All of the above 

d

The Locator R-Tx: 

A. Is designed with double flanges 

B. Can be used for implants placed with up to 60 degree divergence 

C. Is using a nylon cap designed without the positioner in the center 

D. All of the above 

true

T/F A metal screw retained impression coping can be used for closed tray impressions