Selection criteria Flashcards
What principle do we follow in radiography
ALARP
What does the principle ALARP stand for
As
Low
As
Reasonably
Possible
How do we follow the ALARP principle
- Dose optimisation by choice of technique
- Use of selection criteria to justify all exposures
- Production of optimal quality images
How do we follow the ALARP principle
- Dose optimisation by choice of technique
- Use of selection criteria to justify all exposures
- Production of optimal quality images
Prior to undertaking a radiographic investigation what questions should you ask
- Has to been done already
- Do I need it now
- Is It the best investigation
- Are they all needed
- Have I explained the problem
What does a radiographic justification require
That the patients receive a NET BENEFIT from the exposure
What factos can affect decision making
- Litigation
- patient expectations
- Peer pressure
- Fixed practices
Which selection criteria do we use
- Radiate protection
- Selection criteria for dental radiographs by FGDP
What does the FGDP selection criteria for dental radiograph include
- Developing dentition
- Dental caries diagnosis
- Periodontal assessment
- Endodontics
- Implantology
How are the grades of recommendations given for evidence based guidelines
Grade A B or C
What is a grade A of recommendation
When the evidence given has gone through at least one randomised clinical trial
What is a grade B of recommendation
Where the evidence has been collected from well conducted clinical studies bu no studies at randomised clinical trials
What is a grade C of recommendation
When evidence comes from expert repots or options and or clinical experiences of respected authorities
What grade of recommendation do most dental selection criteria have
Grade C
Apart from I the diagnosis of caries where the evidence is ranked an A grade
What are some problems with caries diagnosis from a radiograph
- Overlapping contacts
- Cervical burn out
- The mach effect
- Corrosion products from liners and amalgams
- Heavily restored dentition
Why do we get cervical burn out
Due to x rays over penetrating or burning out the thinner tooth edge reducing in this area appearing like a radiolucent band around the necks of teeth
What is the Mach Effect
A visual effect when uniformly dark area meets uniformly light areas making the dark shade appear darker and the lighter shade appear lighter
What is the frequency of taking x rays in a child or adult dependent on
Dental caries risk
How often should a high dental caries risk child have their x rays taken
6 month bitewings until no new or active lesions arise or until patient changes into a different risk category
How often should a moderate dental caries risk child have their x rays taken
Annual bitewings
How often should a low dental caries risk child have their x rays taken
12-18 months bitewings in the primary dentition
2 Yeats bitewings in the permanent dentition
Describe a child of high caries risk
- No fluoride in their water
- Don’t use fluoridated toothpaste
- Have a high sugar diet or sugary medication
How often should a high dental caries risk adult have their x rays taken
6 monthly bitewings
How often should a moderate dental caries risk adult have their x rays taken
Annual bitewings
