Dental Implants Guidelines and Indications

Question 1

risk of dental implants

Answer 1

nerve damage

Question 2

what is a dental implant

Answer 2

a prosthetic device of alloplastic material implanted into the oral tissues beneth the mucosa and/or within the bone to provide retention for a fixed or removable prosthesis

Question 3

indications - patient factors

Answer 3

replace lost or missing teeth
well motivated compliant patient
dentition free of caries and periodontally sound
systemically well
non smoker
not immunocompromised
no bruxism or parafunctional habits
no impaired wound healing

Question 4

generic criteria for consideration of implants during patient selection - contraindications

Answer 4

age
MH
- poorly controlled diabetes
- bisphosphonate treatment
- psychiatric or mental health issues
- blood disorders
- immunodeficiency
- alcohol
drug use
- bone disorders
- epilepsy
- tobacco use
- poor dental health

Question 5

Who can get an implant on the NHS

Answer 5

1. congenital, inherited conditions that lead to missing teeth
2. traumatic events
3. surgical events leading to tooth loss e.g., head and neck cancer
4. congenital or acquired extra-oral defects e.g., eyes or ears
5. repeated denture options unsuccessful
6. several mucosal disorders e.g., severe xerostoma
7. patients who do not have suitable existing teeth to facilitate orthodontics

Question 6

examples of implant systems

Answer 6

Straumann
Nobel Biocare
Dentsply Sirona

Question 7

requirements of a dental implant

Answer 7

safe
compatibility
MRI safe and image compatibility

Question 8

what is osseointegregation

Answer 8

a direct structural and function connection between ordered living bone and the direct surface of a load carrying implant

Question 9

factors affecting osseointegration

Answer 9

host factors:
- bone density
- bone volume
- parafunction habits
implant factors:
- implant macro design
- chemical composition and biocompatibility
- surface treatment and coatings
- implant tiliting, prosthetic passive fit, cantilever, crown height, occlusal table, loading time

Question 10

what can improve osseointegration

Answer 10

surface modification - sand blasted and acid etched to increase surface area

Question 11

advantages of surface modification

Answer 11

greater amounts of bone to implant contact more rapid integration with bone tissue higher removal torque values

Question 12

two most common metals used in implantology that do not inhibit teh growth os osteoblasts

Answer 12

titanium
zirconium

Question 13

8 year survival and success rate of ITI implants

Answer 13

survival - 97%
success - 93%