Pt4 181-240 Orthodontic

181. Which optimal force for intrusion?

35-60g

70-120

50-100g

10-20g

182. Which force is the optimal force for extrusion?

35-60g

70-120

50-100g

10-20g

183. Which force is the optimal force for up righting?

35-60g

70-120

50-100g

10-20g

184. Which force is the optimal force for rotation?

35-60g

70-120

50-100g

10-20g

185. The clinical feature of Class II division 1?

Proclined upper incisors

Overjet reduce

ANB < 4degree

Anterior Crossbite

186. Clinical feature of Class II division 2?

Retroclined upper central Incisors with OJ reduce

Overjet reverse

OJ increase with proclined upper incisors

Proclined upper incisors

187. In class II division 2 malocclusion FMPA angle may be?

Increase

Reduce

Medium

Normal

188. When the OB is very deep what can we call?

Traumatic bite

Increased deep bite

Excessive overbite

open

189. What is the Keys of angle’s classification?

1st permanent molar (Molars relationship)

Incisors relationship

Canine relation ship

Class I canine relationship

190. For reduction of deep bite is done by?

Posterior bite plane

Anterior bite plane or reverse curve of spee

Both anterior & posterior bite plane

Labial bow with springs

191. In case of open bite case FMPA may be?

Increase

Low

Normal

Decrease

192. When the maxillary teeth placed cover one side out and one side in of mandibular teeth called?

Unilateral cross bite

Scissors bite

Bilateral cross bite

Anterior cross bite

193. In case of class III malocclusion, the upper incisors are?

Cross bite

Retroclined

OJ increase

OB deep

194. In case of class II division 1 malocclusion lips are?

Incompetent lips

Competent

Potentially competent

Everted lips

195. Which Occlusal features are true in case of class II division 1 malocclusion?

Overjet & overbite increased with open bite

Overjet increased, overbite incomplete, unilateral crossbite

Overjet increased but overbite reduced

Over bite & over jet is zero

196. Main objective of class II division 1 treatment is ?

The alignment & retraction of lower labial segment

Both arch alignment

Alignment & retraction of upper labial segment

Extraction of upper 4 to improve the aesthetics & the function of the teeth & jaws

197. What is the Malocclusion means?

Normal alignment of teeth

Irregularities of teeth

aligned teeth

good digitation

198. Which on the Main causes of malocclusion?

Abnormal of bone

Abnormal lips

Abnormal of tongue

Abnormal of teeth

199. In case of class I malocclusion FMPA may be?

High

Low

Normal

Increased

200. Which is the upper incisors of class III malocclusion,?

Proclined with OJ increase

Retroclined and cross bite

Proclined with average OJ

Retroclined with OJ increase

201. Which are the clinical features in class II division 1 malocclusion?

FMPA increased with open bite

Overjet increased with upper front teeth proclined

Overbite increased but over jet reduced

Incomplete over bite & over jet decrease

202. In severe case skeletal class II division 2 malocclusion, treatment is ?

Removable appliance

Myofunctional appliance

Orthognatic approach

Initially removable,then fixed appliance

203. Which malocclusion cause of jet increased?

Class I

Class II div 1

Class III case

Class II div 2

204. What is the clinical feature of deep bite?

Vertical overlapping of upper & lower anterior more than 40%

Vertical overlapping of upper & lower anterior less than 20%

Vertical overlapping more than 5%

No vertical overlapping

205. Clinical feature of open bite?

Vertical overlapping of upper & lower anterior more than 40%

Vertical overlapping of upper less than 30%

Vertical overlapping less than 50%

No vertical overlapping

206. Maxillary teeth placed completely inside or outside of mandibular teeth called?

Cross bite

Scissors bite

Deep bite

Open bite

207. Scissors bite is seen in?

Class II division 1 malocclusion

Class II division 2 malocclusion

Class III

Class I

208. Anterior Cross bite is seen in?

Class II division 1 malocclusion

Class II division 2 malocclusion

Class III

Normal occlusion

209. Premature contact of deciduous posterior can causes?

Deep bite

Pseudo class III malocclusion

Open bite

Scissors bite

210. Tongue thrust is Effect of?

Retroclination of anterior teeth

Decreased over jet

Proclination of anterior teeth with open bite

crowding

211. How to keep space in early lost of deciduous teeth?

Extraction

Correction Of Thumb Sucking

Space Maintainer

Distalise molars

212. Developed anterior cross bite can be treated by?

Z Spring

Posterior Bite Plane

Quad Helix

Coffin spring

213. Cross elastic use to correct?

Single Tooth Cross Bite

Open Bite

Deep Bite

Segmental cross bite

214. When the midline of upper and lower not in a line was call ?

Displacement

Crowding

Central Line Shifting

Spacing

215. Box elastic use for the correction of?

Cross Bite

Open Bite

Reduced Over Bite

Reduced over jet

216. Tilting movement means?

Root moves in opposite direction of crown.

Root moves out of bone

Root and crown moves in same direction.

25-30 gm force is required. .

217. Which is correct for Rotation movement?

Tooth moves towards the occlusal plane.

Tooth moves towards the socket

Tooth moves around the long axis.

Force is required 100-125 gm.

218. Which statement is correct for bodily movement?

Root moves in opposite direction of crown.

Root and crown moves in same direction.

Multiple technique is required.

Functional appliance is required.

219. Which sentence is correct for torque movement?

The movement of root without causing significant of movement of the crown

The movement of root with causing significant of movement of the crown.

Resorption more in extensive apical areas.

Force is required 50-60 gm.

220. Which one is the best tooth movement in orthodontic treatment?

Gentle force.

Short duration of time.

No tooth movement.

Tooth movement with tissue damage.

221. Which is the correct answer when don’t apply enough force ?

Force does not exceed capillary blood pressure.

Produce ideal tissue change.

No tooth movement.

Tooth movement without tissue damage.

222. Which statement is best when a force is applied to a tooth?

In pressure area bony resorption occur

In pressure area bony deposition occur

In tension area bone was resorped

Neutralization of force occur tooth movement

223. Regarding of tissue change in mild force?

Force is 25-30 gm

Low degree of herperaemia seen

Decrease cellular activity

Increase production of osteoclast

224. Which one has changed occur in pressure side due to mild force?

PDL are stretched

Decreased capillary blood supply

Proliferation of cellular activity

Bone resorption occur

225. What are the change occur in tension side ?

PDL are compressed

Increased vascular supply

Decreased cellular activity

Deposition of bone occur

226. Which statement is correct for rapid movement of tooth?

227. Which statement is correct for Intrusion movement of tooth ?

Young age of the patient

Distal movement of tooth26

When ideal force is applied

slow movement of tooth with light force

228. What is the function for fixed appliance?

Attachment are not fixed to the teeth

It allows three dimensional control of teeth

This device can be removes by the patient

Force applied by muscle and bones

229. Which statements are correct for advantage of fixed appliance?

Multiple tooth movement are done at a time

Treatment cost is expensive

Maintain good oral hygiene

Residual space close is excellent

230. Which statements are correct for removable appliance?

Removable appliance is complex

Tiping movement

Maintain good oral hygiene

Only bodily movement is possible

231. Which statements are correct for molar band?

These are passive appliance

It helps in retention

Arch wire tube is attached to the band

These are active component

232. Which statements are correct for arch wire?

These are passive appliance

It helps in retention

Arch wire tie to the bracket by elastomer

It exert force to the teeth through bracket

These are active component

233. Which statement is correct for separators?

These are active component

These are passive component

It create space for bracket

It breaks the interdental contact

234. Which statement is correct for brackets?

These are active component.

Force is transmitted from the arch wire through the bracket.

Bondable bracket indirectly attached to the teeth

Ceramic bracket attached to the tooth by adhesion

235. Which sentence is correct for using elastic?

Distalisation of upper canine by class III elastic

To correct open bite by cross elastic

Correct class III relation by class III elastic

To correct cross bite by box elastic

236. Which statement is correct for spring?

It is an active component

To correct rotation by whip spring

To close the space by open coil spring

To open the space by close coil spring

237. Which is correct for Adam clasp?

It is an retentive component

To correct rotation by spring

Foe close the space

To open space

238. Anterior teeth most likely to be cross bite which of the following mixed malocclusion?

Proclined upper incisor

Retroclined upper incisor

Class II div.2.

Class III

239. Soft tissue profile of a severe skeletal III patient is?

Convex

Concave

Point A is ahead

Point B is ahead

240. Rapid maxillary expansion RME is indicated in case?

Posterior cross bite association with relative maxillary crowding

Class II div 1 cases

Cleft palate patients with collapsed maxillary arch

Open bite cases

241. A very high tongue in the roof of the mouth may caus ?

Cross bite

Crowding

Median diastema

Wide upper arch & narrow lower arch

242. Which of class I dental skeletal with backward rotation may cause ?

Incomplete overbite

Open bite

Increased overjet

Pt4 181-240 Orthodontic

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