Orthodontic Flashcards
1
Q
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
A
Fixed appliance
2
Q
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
A
Angles classification
3
Q
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
A
The ideal occlusion is class 1
4
Q
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
A
Angles classification 3 when the manclusion is not ideal class it is refused to as malocclusion
5
Q
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
A
Class ll div l
6
Q
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
A
Class ll div ll
7
Q
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
A
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
8
Q
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
A
Adams universal pliers
9
Q
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
A
Brackets
10
Q
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
A
Functional appliance
11
Q
What is the name of the most commonly used functional appliance? Twin blocks Triple blocks Bite raising appliance Retainer Natural appliance
A
The most common functional appliance being used is called twinblock
12
Q
What is the name of the horizontal overlap between the upper and lower incisors? Overbite Over jet Anterior open bite Expansion Diastema
A
Over jet
The horizontal overlap of the lower incisors
13
Q
What is the name vertical overlap of the upper and lower incisors ? Overbite Over jet Anterior open bite Expansion Diastema
A
Overbite
14
Q
When upper anterior teeth stick out or protrude they are also said to be what ? Retroclined Projecting Prominent Pro lined Obtrusive
A
Proclined
15
Q
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.
A
Opg/ pantomagraph
