American Academy of Cosmetic Dentistry Exam Practice Question and Answer Part 1

Which of the subsequent would be the major benefit of utilizing a layering method with composite resin in restoring a disto-occlusal Class 11 restoration?

Higher degree of polymerization and lower degree of tooth sensitivity

Higher sheer strength and wear resistance

Higher tensile strength and modulus of elasticity

Better compressive strength

Correct! Wrong!

Which of the subsequent is correct regarding tooth preparation for diastema closure with bonded porcelain restorations?

Keep all margins supragingival or equigingival

Full crown preparations are best utilized to close spaces

Subgingival interdental margins will allow for improved emergence profiles

Mini-wings must always be utilized to close a black triangle interdentally

Correct! Wrong!

What is the BEST property of condensable composites?

Lower filler content to allow lateral and vertical flow ensuring intimate contact

Less stickiness and stiffer consistency and have a wear ratio similar to amalgam

A filler loading of fibrous porous or irregular particles and a filler percentage of 40% to 50% filled

Clinical evidence of strength and polymerization shrinkage superior to conventional composites

Correct! Wrong!

A white opacity near the incisal one-third of a permanent incisor is MOST probable the result of what?

Ingestion of excessive fluoride by the patient's mother throughout pregnancy

Ingestion of excessive fluoride by the patient at the age of 1-3 years

Antibiotic therapy by mother throughout pregnancy

Trauma or infection of the patient's deciduous incisor

Correct! Wrong!

When making for posterior porcelain to zirconia crown the suggested occlusal reduction should be:

1.0 mm

1.5 mm

2.0 mm

2.5 mm

Correct! Wrong!

Which of the subsequent is a drawback of subepithelial connective tissue (CT) grafting?

Tissue and color blend

Primary closure of the donor site

Two surgical sites

Change in amount of keratinized tissue

Correct! Wrong!

How is tissue guidance for implants BEST achieved?

By placing an over-sized healing abutment subsequent second stage surgery

By placing an anatomically correct screw retained provisional subsequent second stage surgery

By placing an over-sized healing abutment four to six weeks after second stage surgery

By placing an anatomically correct removable provisional four to six weeks after second stage surgery

Correct! Wrong!

When a connective tissue graft is placed over an anterior implant site it is BEST to:

use a stay plate or a "flipper" as a temporary to direct healing

bond a temporary tooth to the adjacent teeth to keep pressure off the site

place the permanent restoration as fast as possible

prepare a fixed temporary to develop proper tissue contour

Correct! Wrong!

Ridge collapse subsequent extraction is probable to create which of the subsequent kinds of defect?

Apico-coronal

Buccolingual

Both apico-coronal and buccolingual

Tissue loss

Correct! Wrong!

On average the distance from the base of the gingival sulcus to the alveolar bone is:

2.0 mm

3.0 mm

4.0 mm

5.0 mm

Correct! Wrong!

The evading of open cervical embrasures can BEST be achieved by placing the interproximal contact points relative to the interproximal:

margins

bone

papilla height

sulcus base

Correct! Wrong!

Most occlusal splints have one main function; what is it?

To alter an occlusion so it does not interfere with complete seating of the condyles in centric relation

To increase the vertical dimension taking all the loading forces off the TMJs and transferring the load to the teeth

To relieve symptoms of orofacial pain since direct occlusal equilibrium does not have the same potential for the relief of symptoms

To avoid having to remove any tooth structure by equilibrating the teeth to perfect the occlusion

Correct! Wrong!

What is the principal determinant of posterior occlusal form?

Elevator muscles

Vertical dimension

Anterior guidance

Lateral excursions

Correct! Wrong!

When utilizing dual-cured resin cements the use of light activated curing is:

unnecessary as the self-curing mechanism results in maximum polymerization

mainly advantageous to speed the clean-up process

necessary to obtain maximum degree of polymerization

helpful in color stabilization

Correct! Wrong!

Maxillary anterior tooth length can be evaluated utilizing which of the subsequent phonetic guidelines:

"S" sounds can be utilized to determine length relative to the vermilion border of the lower lip.

"F" sounds can be utilized to determine length relative to the lower incisors.

"E" sounds can be utilized to determine length relative to the midway point among the upper and lower lips.

"M" sounds can be utilized to determine length relative to lower incisors.

Correct! Wrong!

Which of the subsequent can aid in reliably achieving centric relation?

Stereographic tracing

Posterior returned positioning

Bilateral manipulation

Trisected angle gnat Hologic recording

Correct! Wrong!

The "white line" which shows up irregularly when finishing a composite restoration among the restoration and tooth structure is cautilized by what?

The inherent optical properties of composite which naturally create a halo effect around the margin

Overheating the composite Throughout the finishing process

Polymerization shrinkage which tears the composite at the margin with the tooth

Uncured resin that turns white in color Throughout polishing

Correct! Wrong!

The process of directing occlusal forces through the long axis of the teeth is known as axial:

Dissipation

Alignment

Tripodization

Correct! Wrong!

Centric relation is:

only about the teeth

only about the joint

about the teeth and the joint

about the teeth the joint and the slide into maximal intercuspation

Correct! Wrong!

The vertical dimension of occlusion:

cannot be altered over time.

is an adaptable position based on studies with edentulous patients?

develops by balancing ramus growth and anterior tooth wear.

develops from repeated contraction and relaxation of the temporalis muscle.

Correct! Wrong!

Which of the subsequent is described by the outward pressure of the tongue versus the inward pressure of the perioral musculature?

Freeway space

Neutral zone

Buccal corridor

Vestibular space

Correct! Wrong!

Overtime dentin bonding when compared to enamel bonding displays which of the subsequent?

Both enamel and dentin bond strengths remain the same overtime

Dentin bond strength tends to grow stronger over time

Dentin bond strength tends to decrease while the enamel bond strength remains the same

Enamel bond strength tends to decrease while the dentin bond strength remains the same

Correct! Wrong!

How can fracture toughness be described?

A measure of material resistance to rapid crack propagation

A quantitative analysis of ceramic wear

A poor indicator of a material clinical reliability

A recent enhancement by the addition of glass to ceramic materials

Correct! Wrong!

Which of the subsequent photo activators is utilized in most light-curing materials?

Aminobenzoate

Camphor quinone

Metronidazole

Benzoyl peroxide

Correct! Wrong!

Why do nano filled composites retain their polish?

They have a mix of hybrid filler particles and nano-filler particles

They have a composition consisting of a low filler to resin matrix ratio

They display breakdown of the nano-clusters as they wear

They display uniform polymerization with a reduced cure time

Correct! Wrong!

In an internal derangement of the TMJ:

the disk is generally nonreducible.

surgical intervention is indicated.

lateral pole disk derangements generally precede medial pole derangements.

Throughout lateral pole derangements the medial pole is braced just down the eminence in centric relation.

Correct! Wrong!

Porcelain veneers should be bonded with:

A hybrid cement to provide extra strength.

A dual cure cement to increase the working time.

An opaque cement to mask underlying tooth structure.

A dentin bonding agent whenever dentin is exposed.

Correct! Wrong!

The main advantage of all-ceramic crowns over PFMs is:

Better bond strength to tooth structure.

Less reduction of tooth structure.

Increased light transmission deeper into the crown.

Lower laboratory costs.

Correct! Wrong!

The active ingredient in MOST power bleach formulas is nearest in composition to:

3% hydrogen peroxide solution.

10% carbamide peroxide.

30% hydrogen peroxide solution

40% carbamide peroxide.

Correct! Wrong!

In esthetics the value of a tooth depends upon which of the subsequent?

Density of the hue

Intensity of the color

Metamerism of the basic color

Light reflection or light absorption

Correct! Wrong!

Of the subsequent what is the BEST treatment for a Class IV fracture of a lateral incisor with no pulp exposure and otherwise healthy teeth?

Bonding: this is the most conservative treatment for a Class IV fracture of this tooth

Provisional: this will allow you to assess the tooth's long-term nerve health

Porcelain Jacket Crown: this will allow you to most closely match the adjacent teeth

Lithium disilicate crown: this provides the best complement of strength and esthetics

Correct! Wrong!

What is the reason to moisten dentin Throughout bonding procedures?

To facilitate infusion of the dentin bonding agent

The water molecules react with the unfilled resin to create a tighter bond

The water reacts with the acetone in the dentin primer to create a stronger bond

To facilitate infusion of curing of the bonding agent

Correct! Wrong!

When feldspathic porcelain is utilized as an enamel substitute restoration a tooth will have what percent of its original rigidity?

100%

90%

80%

70%

Correct! Wrong!

Opalescence can be described as:

the quality and quantity of light reflection

the wavelength of reflected light

a milky iridescent appearance produced by light scattering

the intensity of color or degree of hue saturation

Correct! Wrong!

Throughout occlusal equilibration the general rule to correct an anterior slide is to reduce the:

lingual inclines of the uppers or the buccal incline of the lowers

mesial inclines of the uppers or the distal inclines of the lowers

distal inclines of the uppers or the mesial inclines of the lowers

distal inclines of the uppers or the buccal inclines of the lowers

Correct! Wrong!

Progressive loading of dental implants is:

adjusting the occlusal material to gradually load the bone to implant interface

gradually intensifying the occlusal contacts subsequent Stage I surgery

utilizing acrylic on a transitional implant prosthesis to allow for the addition or removal of acrylic to provide short periods of hyper occlusion

improving the bone density and strength by allowing the implant to remain unloaded Throughout any occlusal contact

Correct! Wrong!

Sealants utilized for composite restorations:

penetrate the microcracks that can develop Throughout the finishing procedure

bond the restoration to tooth structure at the margin

replace the air-inhibited layer with a very polishable surface

fill ditches and defects in the composite surface due to placement method

Correct! Wrong!

Which of the subsequent may harmfully affect bond strengths and result in increased microleakage?

Isolation with a contour strip without rubber dam

Rinsing etchant from the enamel surface for two to five seconds

Vital bleaching of teeth a few days before bonding

Agitation of the etchant when applying to enamel

Correct! Wrong!

When considering ceramics for posterior restorations one should recognize that ceramics are stronger when?

Under compressive stress but weaker under tensile and shear stress

Under tensile stress and weaker under shear and compressive stress

Under shear stress and weaker under compressive and tensile stress

Compressive stress is counter balanced by the combined tensile and shear stress

Correct! Wrong!

What term describes the reflection of more light in bonding material?

Value

Opalescence

Opacity

Fluorescence

Correct! Wrong!

What feature of dentin hybridization makes it useful for resin bonding?

It occurs above the surface of dentin

It adds filled resin to unfilled resin causticizing a hybrid of the two materials

It does not affect the dentinal tubules

It is stronger than smear layering bonding

Correct! Wrong!

What is the complex of resin-reinforced dentin that exists after adhesive application when utilizing a 'total etch' system?

Dentin layer

Smear layer

Hybrid layer

Adhesive layer

Correct! Wrong!

What dentin pre-treatment will enhance the micro-tensile bond strength of a self-adhesive resin modified glass ionomer cement?

Polyacrylic acid

Thorough drying

Sterile water

Toluene blue

Correct! Wrong!

Which segment of a crown generally presents the MOST difficult esthetic challenge?

The gingival third due to the potential of invasion of biologic width

The interproximal area due to the proximity to the adjacent dentition

The incisal third due to its frequent variation in hue chroma and translucency

The middle third due to the transitional zones

Correct! Wrong!

From the subsequent choices what is the BEST way to increase the enamel adhesive interface on a Class IV composite restoration?

Incorporate the entire facial surface of the tooth into the restoration

Place a scalloped chamfer 0.3 mm deep and approx. 2.0 mm in length around the margin of the restoration

Place a butt joint approximately 2.0 mm in length around all the margins

Place a feather edge 0.5 mm deep and 1.0 mm in length around the margin

Correct! Wrong!

What is the MAIN benefit of placing an immediate provisional for an anterior implant?

The patient can leave with a fixed temporary

An immediate provisional will help maintain the papilla

An immediate provisional will hasten the healing process

The dentist may take the final impression that day

Correct! Wrong!

In placing a Class II composite the contact area should be restored with a:

Low-wear micro fill composite

Flowable composite

Highly polishable composite

Heavily filled composite

Correct! Wrong!

Which of the subsequent is correct about dental adhesive systems?

Utilizing a three-step etch-and-rinse method is more method sensitive than simplified systems

Systems that remove the smear layer tend to display better clinical performance

Systems that modify and utilize the smear layer tend to display better clinical performance

Systems are all equal clinically as long as manufacturer specifications are followed

Correct! Wrong!

Which of the subsequent is the BEST protocol for repairing a small porcelain fracture?

Place a shoulder or deep chamfer around the fractured area

Silanate the porcelain

Polish the fractured surface

Etch the porcelain with phosphoric acid

Correct! Wrong!

Bone volume in areas of future implant sites can BEST be augmented prior to extraction by:

Connective tissue graft

Guided tissue regeneration

Corticosteroids

Correct! Wrong!

The upper dental midline is 1.0 mm to the left of the facial midline and it is canted by 1.0 mm. In your cosmetic treatment plan it is most important to:

Center the upper dental midline with the facial midline

Make the upper dental midline parallel with the facial midline

Center the lower dental midline with the facial midline

Line up the upper and the lower dental midlines

Correct! Wrong!

Which of the subsequent BEST describes the buccal corridor?

The alignment of the maxillary posterior teeth from the canine distally

The dark space among the corners of the mouth and the buccal surfaces of the maxillary teeth

The width of the maxillary teeth in the posterior dental arch

The relationship of the maxillary occlusal plane to the cheek

Correct! Wrong!

Throughout stage II surgery intentional excess tissue generation can be created buccally by:

Placement of an undersized healing abutment

Use of cervical contouring via tapered healing abutments

Lingual incision and subsequent buccal displacement of the flap

Use of a soft tissue model when fabricating the transmucosal components

Correct! Wrong!

According to the literature what is the average height of soft tissue that can be expected to form over the interim plant crest of bone?

2.4 mm

3.4 mm

4.4 mm

5.4 mm

Correct! Wrong!

The optimal preparation for posterior all-ceramic restorations is a:

Rounded 90-degree shoulder

Butt 90-degree shoulder

Rounded 60-degree chamfer

Tapered margin

Correct! Wrong!

When photographing the retracted (1:2) view, if the anterior teeth are in focus and the posterior teeth are not in focus the probable cause is what?

Flash is too low

F-stop is too high

Shutter speed is too slow

F-stop is too low

Correct! Wrong!

Fractured tooth #9 will be extracted. To preserve bone height a dentist should ideally:

Place an implant immediately palatal to the extraction site with bone augmentation

Atraumatically remove the tooth and place a large diameter implant

Atraumatically remove the tooth and wait for bone healing prior to implant placement

Place the implant immediately with bone augmentation at the time of the extraction

Correct! Wrong!

The term given when the gingiva does not recede usually leaving a facial sulcus of 3.0 mm -- 4.0 mm or greater is:

Normal active eruption

Altered active eruption

Altered passive eruption

Normal passive eruption

Correct! Wrong!

In what direction is alveolar bone resorption observed subsequent a maxillary tooth extraction?

Buccal and gingival

Apical and palatal

Apical and buccal

Palatal and buccal

Correct! Wrong!

A lateral incisor is being replaced with an implant. Where should the superior/inferior positioning of the implant platform be placed?

Superior to the final desired gingival zenith

At the level of the final desired gingival zenith

1.0 mm apical to the final desired gingival zenith

3.0 mm apical to the final desired gingival zenith

Correct! Wrong!

The dentist treating the patient above wants to conclude if any teeth are ankylosed. This can be done best by the use of what?

Periapical radiographs of the anterior teeth

Percussion of the anterior teeth

Periodontal probing of the anterior teeth

Vitality testing of the anterior teeth

Correct! Wrong!

The 19-year-old female pictured above recently had her braces removed. Her orthodontist referred her to you for restorative care. At your introductory appointment photographs and models were taken. In your initial evaluation of this case, which of the statements is correct?

Diagnostic work-up will show this is a good case for Accreditation

A diagnostic wax-up is needed to evaluate the restorability of this case

Interdisciplinary communication was probably utilized in this case

An implant and four restorations will restore to esthetic proportions

Correct! Wrong!

According to the AACD Accreditation Examination Criteria the MOST important appropriate fault listed below pertaining to this smile design case is which of the subsequent?

Evidence of iatrogenic damage to opposing teeth

Improper width to length ratio

Improper axial inclination

Periodontal health is not optimal

Correct! Wrong!

Which of the subsequent anatomical characteristics regarding the lips is correct?

Lip morphology has little to do with bones and teeth

Lips plump and drop with aging

The philtrum of the lip is an accurate anatomical guide to the center of the face

As one ages the philtrum of the lip becomes more dominant

Correct! Wrong!

When choosing a shade the proper indoor lighting is:

Incandescent

Standard fluorescent

Color corrected fluorescent

Halogen

Correct! Wrong!

Which of the subsequent BEST describes hue?

Relates the color to a gray scale

Varying wavelengths of radiant energy

Color intensity

Relates the color to a yellow scale

Correct! Wrong!

Central dominance in dental composition can be increased by:

Narrowing the line angles

Reducing the vertical dimension

Closing the diastema at mid-line

Lowering the value

Correct! Wrong!

The teeth that characteristically display the greatest variation in symmetry with the contralateral teeth are the maxillary:

Central incisors

Lateral incisors

Canines

First bicuspids

Correct! Wrong!

What least distance is needed among an implant and the root of a tooth in order to keep the tooth's bony attachment intact and prevent horizontal bone loss?

1.0 mm

1.5 mm

2.0 mm

2.5 mm

Correct! Wrong!

When utilizing an acellular dermal matrix as a graft material in covering exposed root surfaces which of the subsequent is BEST to completely cover the area?

An envelope flap

A double papillae graft

A free gingival graft

A coronally positioned flap

Correct! Wrong!

In comparing the use of electrosurgery, lasers, and scalpels to achieve the desired gingival modification around implants:

Scalpels are safe, provide minimal hemostasis, and the least amount of gingival recession subsequent surgery

Electrosurgery units are safe, provide excellent hemostasis and the least amount of gingival recession subsequent surgery

Scalpels are safe, provide excellent hemostasis, and the least amount of gingival recession subsequent surgery

Lasers are safe, provide excellent hemostasis, and the least amount of gingival recession subsequent surgery

Correct! Wrong!

In what position of the TMJ can the mandible accept firm compressive loading with no signs of tenderness or tension?

Centric relation

Centric occlusion

Lateral excursion

Maximum opening

Correct! Wrong!

Throughout proper articulation of the 'S' sound which of the subsequent BEST describes the relationship of the incisal edges of the maxillary and mandibular incisors for the majority of patients?

Maxillary and mandibular incisors lightly touch each other

Maxillary and mandibular incisors closely approximate each other

Incisal edges lightly rest on the superior and anterior borders of the tongue

Incisal edges may be in a variety of relationships depending on the individual

Correct! Wrong!

As the angle of the eminentia increases the:

Lingual concavity of a maxillary anterior restoration should increase.

Lingual concavity of a maxillary anterior restoration should remain the same.

Cusp length of a posterior restoration may increase.

Cusp length of a posterior restoration should remain the same.

Correct! Wrong!

What is the key factor in protecting the posterior teeth throughout chewing?

Centric stops

Anterior guidance

Condylar path

Muscles of mastication

Correct! Wrong!

Etching the internal surface of bonded porcelain restorations with hydrofluoric acid promotes what?

Chemical coupling

Micromechanical retention

Fracture resistance

Resistance to microleakage

Correct! Wrong!

What is the rationale when choosing a luting resin for an inwrapt veneer restoration?

It is best to utilize a dual cure resin due to the benefit of color stability

Dual cure resins offer excellent flow characteristics to facilitate veneer seating

Light cured resins are more resistant to micro leakage and hydrolysis

Light cured resins are more resistant to color changes and oxidation

Correct! Wrong!

What should a composite have that is high strength, high polish ability, low shrinkage, and has better optical properties?

Micron-sized particles combined with nano-sized particles

Mainly macro-sized particles

Mainly nano-sized particles

Micron-sized particles combined with macro-sized particles

Correct! Wrong!

Silane is indicated for which kind of restoration?

Zirconia

Alumina core based restoration

Felspathic porcelains

Any contaminated porcelain

Correct! Wrong!

Of the subsequent which class of composites demonstrates the BEST physical and optical properties for both anterior and posterior composite restorations?

Micro hybrids

Nanohybrids

Micro fills

Hybrids

Correct! Wrong!

When choosing a hybrid composite for a Class IV restoration the MOST important factor to consider is the:

bond strength of the cured material.

ability of the material to mimic the appearance of the tooth.

surface area of the defect to be restored.

surface hardness of the material related to occlusal forces.

Correct! Wrong!

Etching the inner surfaces is favorable for all pressed restorations since this process increases the bond strength among the:

porcelain material and the resin cement.

silane material and the resin cement.

porcelain material and the tooth enamel.

porcelain material tooth enamel and dentin.

Correct! Wrong!

Utilizing the principles of golden proportion, the ideal width of a central incisor should be what percent of its length?

70%-74%

75%-79%

80%-84%

Correct! Wrong!

The inner surface of feldspathic porcelain veneers should be etched with which acid?

10% phosphoric

10% hydrofluoric

37% phosphoric

37% hydrofluoric

Correct! Wrong!

When making a Class II restoration with the gingival margin at or apical to the cementa-enamel junction a bevel at the gingival margin:

should be placed to prevent microleakage.

is contraindicated due to poor quality enamel or cementum.

can be placed depending on the marginal contour.

should be placed when contact with the adjacent tooth is broken.

Correct! Wrong!

Long term gingival health is MOST compromised when a crown margin is placed in the:

cementa-enamel junction

sulcus

junctional epithelium

connective tissue attachment

Correct! Wrong!

Post restoratively what can you do to predict if a lost papilla will regenerate enough to eliminate the dark triangle?

Probe the interproximal and the facial bone if the osseous scallop is 3.0 mm or more there is a very high probability that the papilla will completely fill the gingival embrasure

Probe the biologic width if it is 2.0 mm or more at the midline there is a very high probability that the papilla will completely fill the gingival embrasure

Probe the interproximal bone if it is 4.0 mm or less apical to the interproximal contact there is a very high probability that the papilla will completely fill the gingival embrasure

You cannot predict with any degree of certainty whether or not the papilla will regenerate enough to eliminate the dark triangle

Correct! Wrong!

To enhance the chance of maintaining the gingival papilla or allowing papilla regeneration subsequent implant placement the minimal mesiodistal distance among an implant and the adjacent tooth should be:

less than 1.0 mm

1.5 mm -2.0 mm

2.5 mm-3.0 mm

greater than 3.0 mm

Correct! Wrong!

Periodontal therapy has been completed to assure a stable periodontal condition. Of the subsequent what would be the next discipline a dentist should complete in the treatment sequence for this patient?

Gingival grafting to level the gingival margins in the upper anterior segment

Orthodontic treatment to erupt the lower anterior segment to help improve the occlusal relationship and function

Full orthodontic treatment to level and align both occlusal planes

Orthodontic treatment to erupt the upper anterior segment to level the incisal edges

Correct! Wrong!

The patient desires to close the diastema among the maxillary central incisors. The teeth are prepped for veneers. After reviewing the photograph above what obstacles would prevent this patient from achieving the desired outcome?

The discoloration on tooth #8

Desired treatment not including the maxillary canines

Not enough incisal reduction

Labially positioned interproximal finish lines

Correct! Wrong!

At home bleaching treatments are MOST effective for:

Treatment of mild tetracycline discoloration

Treatment of trauma induced staining

Age-related discoloration

Mild to dark surface staining

Correct! Wrong!

When determining the shade of a tooth once the tooth becomes desiccated, it:

Decreases in value

Becomes more translucent

Increases in value

Increases in chroma

Correct! Wrong!

Which of the subsequent has been shown to increase the incidence of postoperative sensitivity?

Residual bacteria on the preparation surface

Excessive agitation of the primer

Rewetting instruments with unfilled resin

Use of chlorhexidine as a rewetting agent

Correct! Wrong!

Facial midlines coincide with dental midlines in approximately what percentage of people?

30%

50%

70%

90%

Correct! Wrong!

In occlusal equilibration which of the subsequent BEST describes the proper considerations for treatment?

Correct the anterior guidance prior to eliminating interferences to centric relation

Eliminate interferences to centric relation prior to any correction of anterior guidance

Flatten posterior inclines to allow for bilateral balancing of excursive forces

Reduce posterior cusps prior to reshaping fossa

Correct! Wrong!

Dermal matrix grafting possesses clear benefits over palatal connective tissue. Why?

The palate is a poor donor site for connective tissue

Single teeth can be treated in one visit

Unlimited amounts of donor tissue are available

The palatal donor tissue is abundant but of poor quality for grafting

Correct! Wrong!

The mucogingival esthetic problem which currently has the worst prognosis for successful correction is what?

Buccal root recession

Thin attached gingival tissue

Loss of interdental papilla

Localized alveolar ridge defect

Correct! Wrong!

Guided Bone Regeneration (GBR) can BEST be achieved utilizing:

Freeze-dried bone allograft without a barrier

Autogenous bone with a barrier

Mineralized freeze-dried bone allograft

Mineralized freeze-dried bone with a barrier

Correct! Wrong!

What does platform switching describe?

A reduced offset of the diameter of the abutment to the diameter of the implant

An increased offset of the diameter of the abutment to the diameter of the implant

The contours of the final crown over the implant

The bone level of the adjacent teeth

Correct! Wrong!

Functional occlusion is influenced by side shift as follows: the greater the side shift the restoration fabricated should display:

Wider cusps on posterior teeth

Wider fossa's and marginal ridges

Improved strength to withstand balancing interferences

Correct! Wrong!

Which of the subsequent GENERALLY characterizes a patient who has a short adult ramus with normal posterior tooth development?

An excess display of mandibular incisors

Decreased anterior facial height

An anterior open bite

Minimum display of maxillary gingiva

Correct! Wrong!

When marked with articulating paper a perfected occlusion will result in which pattern on the maxillary teeth?

Lines on anterior teeth lines on posterior teeth

Dots on anterior teeth dots on posterior teeth

Lines on anterior teeth dots on posterior teeth

Dots on anterior teeth lines on posterior teeth

Correct! Wrong!

Subsequent tray bleaching the suggested delay before initiating composite bonding is how long?

Three days

One week

One month

Six weeks

Correct! Wrong!

Increased loading of filler in composites does what?

Increases polymerization stress

Increases inter-filler resin flow

Decreases overall composite stiffness

Decreases polymerization shrinkage

Correct! Wrong!

What are the components of the biologic width?

Sulcus depth attached gingiva and connective tissue

Sulcus depth epithelial attachment connective tissue

Connective tissue free gingival margin bone height

Attached gingiva connective tissue bone height

Correct! Wrong!

What does potassium nitrate do in bleaching materials?

Acts as a surfactant in the bleaching tray

Creates a calming effect on the tooth's nerve

Re-polarizes the neural pain stimulus response

Improves bleaching effectiveness

Correct! Wrong!

Regarding the occlusion on an implant restoration which statement is correct?

There is much more tensile and compressive stress with vertical loading compared to an angled load on an implant

Compressive loads on an implant crown make the crown height act as a lever and force magnifier

Lateral forces represent a significant increase in stress compression compared with vertical loading

The direction of the occlusal load results in minimal differences in the amount of force exerted on an implant system

Correct! Wrong!

What characteristic does etch and rinse adhesive systems display?

They produce high and substantive adhesion values for dentin only

They are indicated for surfaces that have the preparation circumference primarily in dentin

They work best when the preparation consists primarily of enamel

They provide a macro-mechanical bond to the prepared tooth surface

Correct! Wrong!

An anterior bite plane:

Is a diagnostic splint best utilized as a muscle deprogrammer

Can be utilized to correct internal derangements

Is considered a directive splint

Can completely rotate the condyle

Correct! Wrong!

The purpose of a primer in a fourth-generation adhesive system (etch and rinse followed by a separate prime and bond) is to:

Open the orifices of dentinal tubules

Link the dentin to the resin

Remove the smear layer

Improve bond to the composite filler

Correct! Wrong!

How can the undesirable effects of polymerization shrinkage be managed?

By applying liners and bases in deep cavity preparations

By increasing light intensity from the curing light

By reducing the number of increments of composites

By utilizing composites with a lower percentage of inorganic filler

Correct! Wrong!

The bond of the carbon fibers to the composite will be enhanced by:

Utilizing an unfilled resin to wet the fibers

Utilizing a flowable or filled resin to wet the fibers

Utilizing silane on the fibers prior to bonding with a micro fill composite material

Incorporating fibers into the composite and bonding in small increments of 1.0 mm or less

Correct! Wrong!

If a ceramic crown repeatedly fractures on the facial incisal of tooth #8. the MOST probable cause is tooth preparation with which of the subsequent?

Rounded incisal edge

Minimal chamfer finish line

Nearly uniform reduction of 1.5 mm

Taper of 8 degrees

Correct! Wrong!

When making a tooth for a conservative direct resin veneer what is an ideal depth for the cervical chamfer?

0.3 mm

0.8 mm

1.0 mm

1.2 mm

Correct! Wrong!

As a general principle how much enamel should be reduced for a porcelain veneer?

As much as necessary to facilitate fabrication of an esthetic restoration

Adequate reduction so the lab technician can block out undercuts

As much as necessary to decrease the need for temporization and improve bonding

No more than 1.0 mm of enamel should be removed

Correct! Wrong!

A patient would like to brighten her smile in addition to restoring her missing tooth #8 however she is not interested in dental implants. She would also like to close the spaces among her existing teeth. Unfortunately due to financial concerns she can only restore teeth ##7-10. Reviewing the photograph above how would you achieve golden proportion?

Fabricating a three-unit bridge and a single veneer on tooth #10 will easily achieve golden proportion

In office bleaching along with direct bonding on teeth ##7, 9 and 10, and a Maryland bridge to replace tooth #8 will easily achieve golden proportion

Direct resin bonding in conjunction with a removable partial denture will achieve golden proportion

It is impossible to achieve golden proportion unless more teeth are restored

Correct! Wrong!

According to the AACD Accreditation Examination Criteria the MOST appropriate fault listed below pertaining to this smile design case is which of the subsequent?

Improper margin placement/visible margins

Improper labial anatomy (primary secondary tertiary)

Excessive length of interproximal contacts

Periodontal health is not optimal

Correct! Wrong!

The patient's right lateral incisor in the photograph above needs tissue correction to bring it in line with tooth #10. The measurement from the free gingival margin of #7 to the crest of the bone is 2.0 mm. Which of the subsequent options is the treatment of choice? Gingival recontouring:

For tooth #7 only.

For teeth #7 through #10.

Plus osseous recontouring for tooth #7 only.

Plus osseous recontouring for teeth #7 through #10.

Correct! Wrong!

A patient presents with an endodontically treated tooth fractured sub gingivally within 2.0 mm of the crestal bone. Considering this the MOST appropriate treatment would be to:

Prepare the tooth no more than 2.0 mm from the crestal bone.

Place a post core and full-coverage restoration.

Adjust the gingival height of the fractured tooth and the adjacent teeth.

Erupt orthodontically complete fiber ostomy and restore.

Correct! Wrong!

Where should the contacts be during protrusive excursion?

Canines opposing canines

On the Ungual of the upper central incisors

On all anterior teeth

On the posterior teeth

Correct! Wrong!

The chameleon effect of composites is BEST created by what?

The light focusing effects of the filler particle

A decreased ratio of filler to resin matrix

The filler distribution and its light scattering effect

Irregular surface textures of the focused filler particle

Correct! Wrong!

The masticatory muscle responsible for pulling the condyles forward is the:

masseter

temporalis

superior lateral pterygoid

inferior lateral pterygoid

Correct! Wrong!

The BEST way to increase fracture resistance in an endodontically treated tooth is to utilize:

dentinal bonding and a carbon fiber post.

the smallest diameter stainless steel post available.

a custom-made zirconia post.

the ferrule length of at least 2.0 mm.

Correct! Wrong!

When placing porcelain veneers on teeth #8 and #9 where there is an existing black triangle what is the best interproximal preparation design?

Preparation with equi-gingival finishing line

Preparation that breaks thru the interproximal contact to the lingual line angle

lnterproximal preparation with axial depth of at least 1.0 mm

Preparation with deep-chamfer finishing line

Correct! Wrong!

Throughout growth and development gingival architecture generally continues to migrate apically as a natural part of aging until which of the subsequent age ranges?

7-12 years old

13-17 years old

18-22 years old

23 - 28 years old

Correct! Wrong!

According to the AACD Accreditation Examination Criteria the MOST appropriate fault listed below pertaining to this smile design case is which of the subsequent?

Unnatural emergence profile

Periodontal health is not optimal

Exaggeration of central dominance

Improper axial inclination

Correct! Wrong!

When etching ceramic proper results:

Can be achieved equally utilizing either hydrofluoric acid or acidulated phosphorous fluoride.

Require specific instructions for each brand of ceramic.

Yield a more translucent porcelain that is more amenable to shade modification.

Are achieved with a 37% Phosphoric acid gel applied according to the manufacturer's instructions.

Correct! Wrong!

Prior to impression making which of the subsequent products is appropriate for hemostasis?

Chlorhexidine

Hydrogen peroxide

Aluminum chloride

Glutaraldehyde

Correct! Wrong!