midterm 2024 #1 Flashcards
identify images of the:
1. driver
2. impression coping
3. implant replica
4. prosthetic abutment
SATSHA.
according to recent studies, what is the average success rate for dental implants
98%
what type of implant is restricted to only the anterior mandible
transosteal
what type of implant is included by “in the bone?”
endosteal
what type of implant is a subperiosteal?
eposteal
what is the average amount of bone loss AFTER the 1st year of implant placement?
0.1mm
which of the following is NOT a characteristic of titanium or titanium alloy used for dental implants?
a. low weight
b. high modulus of elasticity
c. excellent corrosion resistance
d. excellent biocompatibility
B- not a characteristic
which surface texture is the most ideal for dental implants?
moderately rough
what is NOT a method of surface modification?
a. acid-etched
b. plasma-sprayed
c. sand-blasted
d. cobalt-chromium coating
e. Hydroxyapatite coating
d. cobalt-chromium coating is NOT
which bone cell type deposits osteoid matrix?
osteoblast
what is the ideal torque for immediate loading?
> 35 Ncm
What is FALSE regarding dental implants?
a. supracrestal tissue is lost
b. ankylosis
c. direct bone-to-implant contact
d. peri-implant fibers are oriented perpendicular to the implant
D. peri-implant fibers are oriented perpendicular to the implant
is FALSE
peri-implant fibers are oriented PARALLEL to the implant
What is FALSE regarding dental implants?
a. blood supply is by terminal branch of large blood vessels
b. more inflammatory response than gingival fibers
c. fewer capillaries
d. blood supply is from the endosteum
d. Blood supply is from the endosteum
this is false because blood supply is from the periosteum
how much space should be between an implant and the tooth?
1.5mm
how much space should be between an implant and another implant?
3mm
which is FALSE regarding the benefit for platform switching?
a. shifts the inflammatory cell infiltrate inward and away from the adjacent crestal bone
b. maintains the supracrestal attachment
c. decreases distance of implant-abutment junction from the crestal bone
d. limits possible interface of bone with micro-movements
c. decreases distance of implant-abutment junction from the crestal bone is FALSE
What is true when there is <2 mm of keratinized tissue of the implant area?
More prone to soft-tissue inflammation
Which of the following is NOT a vital structure to avoid for implant placement?
a. Glenoid fossa
b. Nasal fossa
c. Maxillary sinus
d. Inferior alveolar canal
a. glenoid fossa
Which of the following is NOT a disadvantage of panoramic radiographs?
a. Magnification
b. Unsharpness
c. Shape distortion
d. Pixilation
d. pixilation
Which is FALSE regarding Osteoradionecrosis?
a. Radiation dose > 50 Gy significantly decreases implant survival
b. Better survival success in the mandible than the maxilla
c. Increased implant failure risk
d. Radiotherapy affects implant outcome
a. Radiation dose > 50 Gy significantly decreases implant survival
Which is FALSE regarding pre-operative management of patients with anticoagulation
disorders/medications?
a. Implant treatment is contraindicated when INR is > 3.0-3.5
b. Implant treatment is contraindicated when platelet count is < 50,000 cells/mm3
c. Antibiotics decrease the anticoagulant effects of Coumadin
d. Operative management is the same as bleeding disorders
c. Antibiotics decrease the anticoagulant effects of Coumadin
Which is FALSE regarding HIV-positive patients?
a. Implant treatment is contraindicated when patients are not on antiretrovirals
b. Implant treatment is contraindicated if CD4 count is > 1500 cells/mm3
b. Implant treatment is contraindicated if CD4 count is > 1500 cells/mm3
Which of the following conditions are relatively contraindicated for dental implant
treatment?
a. Cardiovascular disease
b. Crohn’s Disease
c. Organ transplant
d. Patients on corticosteroid treatments
b. Crohn’s Disease
What is the purpose of surface modifications?
Increase bone-implant contact
Which of the following is FALSE with regards to head and neck irradiation patients?
a. Avoid immediate loading
b. Antibiotic prophylaxis is indicated
c. Place implant supported prosthesis with mucosal contact
d. Surgical sepsis is indicated
c. Place implant supported prosthesis with mucosal contact
Which of the following is FALSE with regards to cone beam CT compared to medical CT?
a. Less cost
b. Less radiation
c. Increased soft tissue contrast
d. Increased noise
c. Increased soft tissue
Which of the following is true about CT?
a. Single slice
b. Digital compression
c. Hard and soft tissue contrast
d. Superimposition of structures
c. Hard and soft tissue contrast
