SET 2 Flashcards by Dwaine Villalobos

Diagnosis of ankylosis in primary molars

increase density of lamina dura radiographically

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What age group is a space maintainer difficult to manage?

5 year old child with loss of primary mandibular second molar

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For the retention form is Class III among maxillary teeth

lingual dovetail

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Best time to treat diastema between 2 maxillary anterior teeth, if the result is a low and fan-shape frenum

until permanent canine erupt

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Formocresol pulpotomy for healthy children is not a health hazard to them but caution should be observe for children who have _______

rheumatic fever or nephritis

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An anatomic crossbite, contrasted with a functional crossbite usually demonstrate ________

smooth closure to centric occlusion

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Absence of the dental lamina

congenital absence of the third molars

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Most reasonable restoration for the grossly broken down anterior primary tooth

stainless steel crowns

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Inhibits normal growth and development

dysplasia

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As a generalist, you can perform the phases of orthodontics like:

prophylactic orthodontics

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Maxillary width increases is greater than mandibular because ______

the maxillary alveolar process diverge while mandibular processes as are parallel

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What changes in soft tissue profile are affected orthodontic treatment?

thickness of the upper lip

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Uprighting of tooth is difficult if not slow in progress because ______

occlusion is not relieved

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An understanding of the development of human behavior requires a knowledge of the basic concept of ______

maturation and learning

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Active growth sites of the maxilla

fronto-nasal process
maxillary tuberosity
midpalatal and transpalatal suture

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Cause of crossbite in the maxillary permanent incisor

over retention of a maxillary primary incisor

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Level of caries reduction that is associated with optimal fluoridation of community water supplies

55%

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Premature exfoliation of the primary canine may indicate ______

arch length deficiency

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Avitominosis A & D

systemic cause of malocclusion

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Causes of ectopic or delayed eruption of permanent teeth in the anterior segment

teeth migration
presence of supernumerary teeth
premature loss of primary teeth

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Example of simple anchorage

diastema closure by elastic fraction tipping the crowns together

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In order to restore the original broad and flat contact in primary molars, the class 11 matrix material should be placed with ________

greater curvature that in the permanent

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Microorganism commonly found in delta caries

streptococci mutans and lactobacillus

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Fundamental design of the human masticatory mechanism

geodesic design

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Growth in height of the face results in _______

an increase in vertical dimension

Advantage in the use of extraoral anchorage

permits posterior movement of teeth in one arch without disturbing the opposite arch

Other name for Franfurt horizontal plane

eye-ear plane

A 7 year old patient demonstrates unilateral buccal crossbite in centric occlusion, deviation of the mandibular midline, bilateral constriction of the maxillary arch and a lateral deviation from centric relation to centric occasion. What is the most likely treatment for this case?

bilateral palatal extension

Process of resorption of the roots of the primary teeth is confined to the ______

any part and/or surface of the roots

A primary second molar is in infraocclusion and its occlusal surface is level with the gingival margin of the permanent first molar which is beginning to tip mesially. Radiographs indicate a developing permanent second premolar is present. The dentist should:

extract the primary molar and place a space maintainer

Simple anterior crowding may be corrected by _______

disking or stripping the medial or distal surfaces of the anterior

A model cast would give the ff information EXCEPT: a) arch, shape and symmetry of the maxillary mandible b) an individual tooth malposition c) depth of the palatal vault d) inclination of the roots

d) inclination of the roots

Cleidocranial dysostosis is of interest of the dentist because of __________

multiple supernumerary teeth

What appliance should not be used to upright a permanent mandibular second molar before constructing a fixed partial denture?

acrylic removable segment with facial elastics

Rectangular wire is used in orthodontics appliances in order to ________

prevent buccal and lingual tooth movement

Sequence of histologic changes after pulpotomy 1. new odontoblastic layer at wound site 2. bridge of denim formed 3. necrosis of superficial part of pulp nearest calcium hydroxide 4. acute inflammatory changes from immediate tissue beneath

3-4-1-2

Most prevalent group of malocclusion Angle classification

Class I

Following premature loss of the primary second molars unerupted first molar will migrate and cause space loss in the _______

maxilla or mandible

In absolute necessity, the role is _________

take time in explaining the procedure of dental treatment he needs

Growth may result in the following EXCEPT a) continuous increase in size b) change in form or proportion c) change in texture or in quantity d) increase or decrease in size

a) continuous increase in size

Treatment for a child with open bite. The posterior teeth are the only ones that contact the antagonist

refer the child to an orthodontist

During the primary dentition, pseudo Class III is managed by orthodontic forces EXCEPT a) manual movement b) headcap and chincap c) tongue blade therapy d) skullcap and chincap

a) manual movement

What part of the primary molar will fracture in Class II restoration?

isthmus

The last primary teeth to undergo resorption of the roots at nine years

canines

A 14 year old female has deep vertical pockets with bone loss on the mesial aspect of first molars and some drifting of maxillary incisor. However, only minimal inflammation and minimal plaque are present. What is the probable diagnosis?

juvenile periodontitis

A mother brings her daughter to the dental office for dental treatment. Clinical examination reveal normal occlusion after losing a primary mandibular second molar. What must the dentist do?

evaluate the radiograph and base his treatment with high findings

What is the best space maintainer?

a pulpotomized primary molars

Purpose of Synder test

predict the nature of the combined acidogenic organisms in the oral cavity

Essential criteria for orthodontic diagnosis

radiographic analysis cast analysis clinical examination

What condition is present in a Class II Division 2 malocclusion?

lingual inclination of maxillary central incisor

Loss of space is most rapid following the premature extraction of what primary teeth?

maxillary second molar

Treatment of root fractures in primary dentition

extraction

As an orthodontist, how will you treat a child with a slight crowding of mandibular anterior and exfoliation of primary molar teeth?

take an impression prepare and study cast make an arch length analysis

Best diagnostic tool to identify the offending tooth in children with dental pain and multiple carious teeth

ask the patient to identify the tooth

Loss of space if most rapid premature extraction of what primary teeth?

maxillary second molar

Behavioral problem in children can be managed by familiarization if the basis of the problem is ________

fear

Dental restoration involving the proximal surfaces in the primary dentition, particularly molars, should restore the full mesiodistal diameter for __________

maintenance of arch length

Why do boys and girls differ in behavior in the dental office? What is related to this difference?

learning

What indicates an anterior crossbite in primary dentition?

skeletal growth problem

Primary molars demand extension of the preparation to remove potentially carious areas by following the ________

occlusal groove patterns

To reduce the length of the body of the mandible by surgery if it is _________

the treatment plan for a Class III malocclusion

Slow progress in molar uprighting is usually due to __________

occlusion not being relieved

Will there be a change in the size of the intercanine space if the primary masriiar/central incisor with incisal spring be extracted?

no change will occur in the size of intercanine space

When is the distal shoe space maintainer indicated?

when a primary second molar is lost before eruption of a permanent first molar

Favorable results can be obtained when treating anterior crossbite if __________

proper space in the arch is present where to move teeth in their proper relationship witht he otherst

General facial profile of an infant

convex

Teeth will move occlusally when it reaches stage of Noila's classification

Stage 6

What criteria will differentiate between a true class III and a pseudo class III malocclusion?

the presence of a forward shift of the mandible during closure

Shell teeth is associated with developmental disturbance in _________

structural formation

Most important dental tissue to an orthodontist

periodontal ligament

Why are band loop space maintainer not indicated for premature loss of primary second molar?

normal eruption sequence is disturbed following extraction and space loss occurs ff premature eruption of the second premolars and removal of the band and loop

Interceptive orthodontics is prescribed to collect crowding or incisors which is done by serial extraction of what teeth?

deciduous canines, deciduous first molars, including first premolars

A modified class III preparation for an amalgam restoration in a primary canine is characterized by its __________

facial or lingual dovetail

Characteristics of juvenile diabetes mellitus

blindness

An archal dimension completed earlier among girls at age 10 the in boys

intercanine width

Prognosis ff fracture of the root of a permanent maxillary incisor is most favorable if the fracture is in the _________

apical third of the root

A poor man's cephalogram refers to facial evaluation because of, EXCEPT a) skeletal jaw relationship can be observed b) posterior crossbites are revealed c) jaw to jaw relation can be identified d) mandibular protrusion can be detected

b) posterior crossbites are revealed

Loops and helices are used in arch wires primarily to __________

holds soft tissues away from orthodontic brackets

Buccal coil spring have its undesirable side effects such as _________

tendency of premolar to rotate

Complete excavation or decay on a Class I cavity of a deciduous molar, the pulp was exposed. Following pulpotomy using calcium hydroxide to treat the remaining pulp, dentin will form ____________

slightly below the amputated pulp

When avulse tooth is replanted, the following are correct EXCEPT a) hard scrubbing should be avoided to preserve periodontal membrane b) curette lie alveolar socket before insertion c) 90% successful if avulsion occurs less than 30 minutes d) don't remove loose tissue

b) curette lie alveolar socket before insertion

What changes in soft tissue profile are effected by orthodontic treatment?

thickness of upper lip

What effect will office dental prophylaxis at regular 6 month intervals have on children's oral health?

provide a short-term improvement in oral hygiene

What primary teeth are most severely involved with nursing caries?

maxillary incisors

Cause or failure in Class II amalgam restorations in primary molars

narrow isthmus which eventually can fracture

Attempt to restrain the excessive growth and development forward of the maxilla if it is __________

for Class II malocclusion the treatment stated below