Orthodontic Flashcards
Orthodontics is a branch of dentistry which involves the straightening or aligning of the teeth. There are several types of orthodontic appliances. if the following is an orthodontic appliance which consists of brackets , bands , alastics and arch wire. Removable appliance Fixed appliance Functional appliance Retainer Invisalign
Fixed appliance
A patients occlusion is classified by how the first molars and the canines touch when the mouth is closed.this classification system was devised by an American dentist 1899. What is the name of this classification. Angels classification Anterior classification Angles classification Alternative classification Adams classification
Angles classification
Using angles classification, which of the following is said to be the ideal occlusion ? Class 1 Class ll Class ll div 1 Class ll div 2 Class lll
The ideal occlusion is class 1
Using angles classification , which of the following is said to be type of occlusion where the mandible is too far forward and the lower anterior teeth close in front of the uppers or sometimes in an edge to edge fashion ? Class 1 Class ll Class ll div l Class ll div ll Class lll
Angles classification 3 when the manclusion is not ideal class it is refused to as malocclusion
Using angles classification,which of the following is said to be the type of occlusion where the upper anterior teeth are seen to protrude forwards ? Class l Class ll Class ll div l Class ll div ll Class lll
Class ll div l
Using angles classification which of the following is said to be the type of occlusion where the anterior teeth appear to be pulled back ? Class 11 Class ll div l Class ll div ll Class lll
Class ll div ll
Removable orthodontic appliances consist of several components which are added onto an acrylic base similar to a denture. Which of the following components of a removable orthodontic appliance is the one which retains the appliance in the mouth ? Retractors Expansion screws Palatal finger spring Z spring Adams crib
Adams crib are used to retain removable appliances in the mouth
Expansion screws are used to move teeth or to move each half of the upper arch outwards
Removable orthodontic appliances require follow up appointments to monitor the progress being made. Various equipment and instruments are needed at such appointments. Which of the following instruments is used to adjust the metal spring retractors ? Expansion screw key Measuring ruler Acrylic trimming but Adams universal pliers Straight handpeice
Adams universal pliers
Fixed orthodontic appliances are made up of the following components. What is the name of the components which is directly bonded onto the tooth using an orthodontic light cured resin material? Archwire Alastiks Brackets Bands Tubes
Brackets
What is the name of the removable appliance which is worn in both arches at the same time and uses the forces exerted by the muscles to develop the growth of the jaw? Frictional appliance Functional appliance Forever appliance Full appliance First appliance
Functional appliance
What is the name of the most commonly used functional appliance? Twin blocks Triple blocks Bite raising appliance Retainer Natural appliance
The most common functional appliance being used is called twinblock
What is the name of the horizontal overlap between the upper and lower incisors? Overbite Over jet Anterior open bite Expansion Diastema
Over jet
The horizontal overlap of the lower incisors
What is the name vertical overlap of the upper and lower incisors ? Overbite Over jet Anterior open bite Expansion Diastema
Overbite
When upper anterior teeth stick out or protrude they are also said to be what ? Retroclined Projecting Prominent Pro lined Obtrusive
Proclined
During an orthodontic assessment which of the following radiographs is likely to be taken before treatment commences ? Vertical bw Horizontal bw Pa Lateral oblique Opg/ pantomagraph.
Opg/ pantomagraph
During a monitoring appointment for a fixed appliance which of the following equipment or instruments would not be required? Bracket holders Alastic holders End cutters New archwire Adams universal pliers
Adams universal pliers
It is essential that a patient maintains a high level, of oral hygiene during treatment with a fixed appliance. Which of the following would you recommend to a patient specifically to clan beneath the archwire? Floss Wooden sticks Inter dental brush Mouthwash Electric toothbrush
Inter dental brush
Which of the following mouthwashes would you recommend to a patient who has a fixed appliance? Contains chlorohexidine Contains hydrogen peroxide Fluoride Not recommended for a fixed appliance which tastes nice
Fluoride
Which of the following advice best sums up the oral hygiene instruction which should be given to a patient after the fitting of a removable appliance?
Clean teeth morning and night
Clean appliance morning and night
Clean appliance and teeth every morning , night and after each meal
Clean teeth twice daily and appliance once daily
Clean teeth and appliance at the same time with the appliance in place
Removable appliance and teeth every morning and night and after each meal
Following orthodontic treatment whether it is with fixed or removable appliance another type of appliance is often fitted to hold the teeth in position. What are these appliances called? Retention appliances Maintainers Preserving appliances Retainers Functional appliances
Retainers
There are many reasons to undergo orthodontic treatment . Some cases will require fixed appliances and some a removable. Which of the following cases would you treat with a removable appliance?
Straightening of severely crowded teeth
Movement of jaws in relation to eachother
The derotation of teeth
Guided eruption of unerupted teeth
Backwards or forwards movement of teeth
Backwards or forwards movement of teeth
What is the name given to the condition which can arise if a child continually sucks their thumb or a dummy. It is characterised by a vertical gap between the upper and lower anterior teeth what is this called? Cross bite Reversed over jet Edge to edge bite Anterior open bite Forefront manocclusion
Anterior open bite
As well as causing an anterior open bite sucking habits can also cause the upper teeth to develop inside the line of the arch of the lowers. What is the clinical term for this? Cross bite Revered over jet Edge to edge bite Anterior open bite Forefront malocclusion
Crossbite
What is the rating system used in the uk to determine whether a patient qualifies for nhs orthodontic treatment ? Coitn Bpe Alarm Iotn Onn
Iotn
Which of the following post op advice is relevant only for a fixed appliance ?
Attend all dental appointments for adjustments
Contact the surgery if a breakage occurs
Expect the appliance to feel a bit tight following an adjustment
Clean teeth and appliance after each meal
Use orthodontic wax if the arch wire is digging in
Use orthodontic wax if the archwire is digging in
