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ACP App Part 4 > Part 4 Theories Pg 18-34 > Flashcards

Part 4 Theories Pg 18-34 Flashcards

1
Q

How does intercondylar distance affect your case?

A

It would lead DB groove to be more distal

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2
Q

Five factors of Hanau Quint and which factors can you modify?

A
  1. Condylar guidance
  2. Incisal guidance
  3. Compensating curve
  4. Cusp height
  5. Occlusal plane

Can modify all except condylar inclination

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3
Q

Thielman’s formula

A

1 = CG x IG / (CC x CH x OP)

Examples: If you increase cusp height you have to increase incisal guidance. If you increase incisal guidance, you can increase compensating curve and cusp height.

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4
Q

How did you determine your occlusal plane?

A

Esthetics of anterior teeth, smile line for anterior, posterior was via ala-tragus line on maxilla. I then modified using a compensating curve for balance.

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5
Q

What’s the purpose of the Facebow?

A

To orient the maxilla to the hinge axis of rotation of the mandible, transferring both esthetic and functional components.

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6
Q

What was your third point of reference?

A

A nasion relator which puts the facebow in close relation to the orbitale.

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7
Q

Why not find the true hinge axis?

Which author suggested errors would result in .2 at the 2nd molar?

What did Nagy 2002 say?

A

Research supports that most arbitrary hinge axises are within 5 mm of the true hinge axis. It is also difficult to accurately record and transfer the kinematic hinge axis to the articulator.

Weinberg 1961 calculated if there is a 5 mm error in hinge axis location with a 3 mm thick record, the record is off by 0.2 mm at the 2nd molar. Since I took my CR at the vertical dimension that I wanted to work at, I would expect my error to be less than 0.2 mm.

Nagy - More than 96% of predetermined points were within 2 mm of kinematic axis. Predetermined axis points located with an ear-piece face bow, when combined with articulator reference points can provide a quick/accurate transfer of maxillary cast/transverse horizontal mand axis relationship.

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8
Q

When do you need to find the kinematic hinge axis?

A

Guichet said that you do that if you are going to increase vertical dimension on the articulator.

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9
Q

What is Frankfort horizontal plane?

A

Lowest point on orbit to highest point on external auditory meatus (portion to orbitale)

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10
Q

Why use frankfort horizontal plane to mount maxillary cast?

A

Because this horizontal plane is parallel to the horizon.

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11
Q

What is the significance of the Frankfort Mandibular Angle?

What is normal FMA? Low?

A

Intersection of Frankfort horizontal plane with mandibular plane. Normal FMA is 25 plus or minus 5. Low FMA being 20- : these patients generate a lot of biting force, more susceptible to wear.

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12
Q

Normal range of jaw movements

  • Opening
  • Protrusive, laterotrusive
A

Okeson - 40 to 60 mm

- 8 to 10 mm

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13
Q

Definition CR

A

Maxillo-mandibular relationship, independent of tooth contact, in which the condyles articulate in the anterior-superior position against the posterior slopes of the articular eminence. In this position, the mandible is restricted to a purely rotary movement; from this unstrained, physiologic, maxillomandibular relationship, the patient can make vertical, lateral, or protrusive movements; it is a clinically useful, repeatable reference position.

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14
Q

What are the ways to determine/record CR?

A
  1. Static: chin point (lucia), bimanual manipulation (Dawson)
  2. Graphic: Balkwill, Gysi (tracer with central bearing point)
  3. Chew in recording: Meyers, Boos
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15
Q

Which is the most accurate method to record CR?

A

Kantor reports:
Anterior jig: Retrudes
Bimanual manipulation is the most accurate and reproducible
Myomonitor and free closure gives a more anterior position

Simon reports: No difference in chin point guidance, chin w/ ramus support, bimanual manipulation

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16
Q

Who thinks CR is not stable?

A

Celenza - precision of the position is more important than the position as CR varies over time

Simon - With no TMD, minimal variability between chin point guidance, chin point guidance with ramus support, bimanual manipulation

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17
Q

Who talked about diurnal variance?

What did they attribute the changes to be a result of?

Who else agreed with this?

A

Shafagh - CR varies during the day
- Vericheck instrument
13 dental students at 9 am, 3 pm 9 pm.

  • Changes were due to changes in TMJ fluid content during the day. Difference was .12 to .14 mm.

Latta - On Edentulous patients

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18
Q

Do you believe in side shift?

A

I do not believe in immediate lateral translation as the condyles are braced by bone medially, and there must be some detrusion in the non-working condyle before it can move laterally. Dawson doesn’t believe in side shift. Article by Taylor and Bidra is 2016 discussed how there are no articles discussing actual harm or negative side effects from IMLT, only theory.

Minimum is 12, avg 15, max 20

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19
Q

How does condylar inclination affect side shift?

A

A shallow condylar inclination yields less progressive side shift

A steeper condylar inclination yields greater progressive side shift

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20
Q

What is Bennett movement?

What is Bennett angle?

A

Bennett movement: Bodily shift in the mandible in the direction of the working side

Bennett angle: Angle formed between the sagittal plane and the average path of the advancing condyle

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21
Q

How does Bennett movement affect tooth form and CD fabrication?

A

Greater bennett movement requires shorter posterior cusps and a more mesial position of the DB groove on a mandibular movement

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22
Q

Which is more critical in a semi-adjustable articulator, surtrusion or detrusion?

A

Surtrusion has a limiting effect on working cusp height. Detrusion gives more separation.

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23
Q

What type of lever is the mandible?

A
  1. Teeter totter
  2. Wheel barrow
  3. Mandible; fishing pole
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24
Q

Composition of alginate

Reaction

A
  1. Diatomaceous earth - 56% filler
  2. Sodium alginate - 18%
  3. Sodium phosphate - 2% retarder
  4. Potassium sulfate 10% - smooth surface on stone
  5. CaSulfate dihydrate 14%
  6. Glycols - Taste
  7. Pigments

NaAlginate + Ca2SO4 -> water -> Ca alginate (insoluble) + NaSO4

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25
Q

How accurate is alginate?

A

1.5% permanent deformation over 10 mm

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26
Q

When and how do you use tissue conditioner?

- Active ingredient?

A

Remove CD’s 24-72 hours, 1.5 mm thickness of conditioner, plasticizer (dibutylphtlate) leaches out in 2 to 4 weeks.

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27
Q

Etiology of papillary hyperplasia?

A
  1. Continous denture wear (Ettinger)

2. Fit of denture is most important, removal at night reduces inflammation (Love)

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28
Q

Etiology of denture stomatitis

Treatment?

A

Candida albicans and denture trauma (Ritchie)

New CD and antifungal medication such as Nystatin rinse (100k units/ml 5 ml qid and nystatin ointment 100k units/day). 41% of patients with denture stomatitis have angular cheilitis.

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29
Q

What impression techniques are there?

A
  1. Selective pressure (Pendleton, Frank, Pleasure, Boucher)
  2. Functional (Applegate - Iowa wax/soft reline material)
  3. Mucostatic (Page, Addison - ZOE paste or impression plaster)
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30
Q

Composition of coe-flex lead free polysulfide

What is the reaction?

A

Base:

  1. Polysulfide polymer (mercaptan groups - SH)
  2. Accelerator: Sulfur
  3. Filler: Titanium dioxide
  4. Plasticizer: Dibutyl phthalate

Catalyst/accelerator:

  1. Initiator: Copper hydroxide or lead dioxide
  2. Retarder: Oleic acid
  3. Filler: Titanium dioxide
  4. Plasticizer: Dibutyl phthlate

Terminal mercaptan groups (SH) react with oxygen from CuOH or PbO2, results in water as a byproduct

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31
Q

What is the ADA spec for elastomeric impression materials?

A

No 19

Impression and die stone materials are compatible if it can reproduce a 20 micron line.

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32
Q

Physical properties of polysulfide

A

Best flexibility and tear strength

Worst elastic recovery and shrinkage

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33
Q

Pros/cons of Polyslufide

A

Pros: Low viscosity and stiffness (removal from undercuts), high tear resistance, low cost, long working time

Cons: Bad odor, tough to mix, must be poured immediately

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34
Q

What type of impression materials are available?

A
  1. Polysulfide
  2. Polyvinyl siloxane
  3. Polyether
  4. Reversible hydrocolloid
  5. Irreversible hydrocolloid
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35
Q

How did you border mold maxilla?

A

Anterior: Lip elevated and extended outward downward and inward (orbiculares iris/labial frenum)
Buccal frenum: Cheek is elevated and pulled outward, downward and inward, also back and forth
Posterolateral: Rub with hand, open wide, move jaw side to side.

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36
Q

How did you border mold the mandible?

A 
Labial flange (lip out, up, in)
Buccal frenum (cheek out, up, in, back and forth)
Posterior (cheek moved buccal, upward, and inward)

Anterior lingual flange length - patient protrudes tongue to active genioglossus and raise sublingual fold
Anterior lingual flange thickness: Push tongue against the front part of the palate

Post edge of post lingual flange: Tongue against front part of palate to activate mylohyoid and superior constrictor
Inf edge of post lingual flange: Tongue tongue out and then into opposite cheek

Distal of retromolar pad / masseteric notch: Open wide (cause pterygomandibular raphe to come forward), trust tongue out and then close mouth (masseter pushes on buccinator to make masseteric groove) (medial pterygoids push against retromylohyoid curtains to form distal end of lingual flange)

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37
Q

Who discussed lingual flange design and what did they say? t

A

Fish (1964) - Adapation of polished surfaces to come in contact with muscles at an inclined plane to keep dentures in place

Levin (1981) - When ridge highly resorbed, advantageous for thicker lingual borders and sublingual extensions as this increases retention and stability

Lott and levin described the physiologic technique for lingual flange. Border mold by having patient close, swallow hard and lick lower lips. Wriggle tongue while you are pushing down and they push up.

If overextended, check with disclosing wax

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38
Q

What muscles are in the masseteric notch?

A

Formed by the buccinator as the master contracts and pushes against it

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39
Q

What kind of stone did you use for your casts? Why?

A

Silky rock - Type 4 Gypsum

- High strength gypsum with minimal expansion (.09

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40
Q

How are stones classified?

A 
I: Impression plaster
II: Model plaster
III: Dental stone
IV: Die Stone
V: High strength

Differences are conditions in which water was removed during manufacturing, particle size, and various chemical additives

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41
Q

What is the die stone equation?

How do companies make gypsum?

A

CaSO4º1/2 H2O + 1.5 H2O -> CaSO4*2H2O

Head up calcium sulfate dihydrate to get calcium sulfate hemihydrate (calcication)

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42
Q

Additives to gypsum?

A 
Potassium sulfate (accelerator, hardener)
Terra alba
NaCl
Borax
Calcium oxide
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43
Q

Purpose of PPS (5)

A 
Complete border seal / aid in retention
Compensate for polymerization shrinkage
Prevent food from getting caught
Reduce gagging tendency
Increase strength across denture
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44
Q

How did you determine location and extent of PPS?

Which empirical technique did you use?

A

Valsalva and Ah technique, then palpated tissue

Empirically via locating displayable tissue in relation to the vibrating line with a T burnisher. I then carved a seal in 1 mm deep and 1.5 mm wide (Hardy)

45
Q

What is the anatomy of PPS?

A

PPS region is displacable glandular tissue, anterior to the vibrating line, and the junction between the mobile and non-mobile portions of the soft palate.

Chen found that fovea palatini are posterior (~75%) to the vibrating line

46
Q

What are the fovea palatini?

A

Two indentations on each side of the midline formed by a coalescence of several mucous gland ducts.

47
Q

What is the Munsell color system?

A

Three dimensional color system with hue, value, and chroma as coordinates:

Hue = color
Value = Lightness or darkness
Chroma = intensity or saturation
48
Q

What is cieLAB?

A

L is lightness

A+b = chromatic component

49
Q

What are the shade differences from A, B, C, and D

A

A: Red-brown
B: Red-yellow
C: Grey
D: Red-grey

50
Q

Oral complications of chemotherapy (4)

A
  1. Petechiae on gingiva, palate, buccal mucosa, floor of tongue
  2. Ecchymosis of tongue
  3. Gram negative infections appearing as creamy
  4. Herpetic infections that may take 5-6 weeks for resolution
51
Q

What are sialologue therapy for patients with irradiation?

A
  1. Sialor - anetholetrithione - Direct choleretic effect on secretary cells of salivary gland
  2. Salogen - pilocarpine - Acts on muscarinic receptors
52
Q

If patient has burning tongue, what might be the cause? How do you treat?

A

Vitamin B12 deficiency, pernicious anemia. May need vicious lidocaine, ibuprofen, and anti fungal medications

53
Q

Oral complications of irradiation?

A

Early effects, affects soft tissue structures (salivary glands, skin, oral and nasal mucosa)
Skin: Xerostomia, dermatitis, mucositis
Bone tissue becomes hypocerular with combined cellular/vascular effects
Osteoclasts can migrate into bone

Radiosensitive cells: Reproductive cells, lymphocytes, bone marrow, immature bone.
Radioresistant: Muscle, nerve, bone

54
Q

Antibiotic regiment

A

Oral amox 2g
If allergic to penicillin/amoxicillin - cephalexin 2g or Clindamycin 600 mg or Azithro/clarithromycin 500 mg

If unable to take oral: Ampicillin 2 g IM/IV or Cefazolin/ceftriaxone (cephalosporin) 1 g IM or IV

If allergic and no oral: Cefazolin/ceftriaxone 1 g IM/IV or Clindamycin 600 mg IM/IV

55
Q

What’s CD4 count in HIV patient?

Intraoral findings for HIV patient?

A

Normal is 1000. HIV patient may have low 400’s

Kaposi’s sarcoma, hairy leukoplakia, recurrent herpes, gingivitis, periodontitis, candidiasis, oral warts, angular chelitis, petechiae, ecchymosis, hematoma

56
Q

Which drugs treat an increase in intraoccular pressure and what drugs are contraindicated with it?

A

Anticholinergics contraindicated for glaucoma patients

Anti-cholinergic for excess salivary flow

57
Q

How to treat dry mouth patient

A
  1. Saliva substitute rinse (active ingredient carboxymethylcellulose)
  2. Sialologue therapy via Sailor (direct cholinergic effect on secretary cells of salivary gland) or Pilocarpine (acts on muscarinic receptors)
58
Q

Describe polymerization reaction for acrylic resin

A

Heat or tertiary amine (cold cure) decomposes benzoyl peroxide which releases free radicals and initiates PMMA chain growth by reacting with monomer.

The plasticizer softens beads and allows monomers to reach the core of beads faster. The cross linking agent glycol dimethyacrylate bridges the polymer strands.

59
Q

What is in denture monomer liquid?

A

Methyl methacrylate
Hydroquinone - Inhibitor
Dibutyl phthalate - Plasticizer
Glycol dimethacrylate - Cross linking agent

60
Q

What is in denture polymer (powder)?

A

Polymethyl methacrylate
Initiator: Benzoyl Peroxide
Organic fibers
Pigments

(Not chain propagator - glycol dimethacrylate)

61
Q

What temp does benzoyl peroxide begin to decompose into radicals?

What is the processing temp and time for dentures?

What happens if heated up too quickly?

A

Benzoyl peroxide: 158°F

Long cure: 165°F for 9 hours, 1/2 hour in boiling water.
Short cure: 163°F for 1.5 hours, then 1.5 hour in boiling water

If too fast, large # of radicals occurs. Since it is an exothermic process, results in boiling point of monomer exceeded and porosities results

62
Q

Why remount a complete denture?

A

Compensate for processing shrinkage/error

63
Q

What is high impact resin?

A

Impact resistance achieved by incorporating a rubber (butadiene styrene rubber) phase into the beads during polymerization.

64
Q

Why Injection processing?

A

Ivobase by Ivoclar - Time efficient, less than 1% residual monomer, pre-measured quantities, higher flexural strength (81 vs 60), due to the injection technique, you account for polymerization shrinkage as the most anterior portion of the denture cures first.

17 bar pressure

65
Q

Light cured denture base comprised of?

What wavelength does the photoinitiator cure at?

A

Urethane dimethacrylate

Camphoroquinone (photoinitatior) - Cures at 470 nm

66
Q

Describe the following waxes:

  1. Paraffin
  2. Pine tree Gum dammar
  3. Palm tree Carnauba
  4. Candelilla
  5. Ceresin
A
  1. Petroleum product, controls melting temp
  2. Improve smoothness/toughness, resistance to flaking and luster (pine trees)
  3. Hard, contributes to gloss (palm trees)
  4. Sub for carnauba (not as hard)
  5. Can replace paraffin for toughness
67
Q

How are baseplate waxes classified?

How about casting waxes?

How about modeling plastic?

A

Baseplate : Type 1 (soft)
Type 2: medium
Type 3: Hard (75% paraffin)

Casting: Type I direct (medium hard) and Type 2 (indirect (soft)

Modeling plastic: Type I stick and Type II cake

68
Q

Compound ingredients (6)

A
  1. Rosin (thermoplastic property)
  2. Copal resin (thermoplastic property)
  3. Carnauba (high melting range)
  4. Talc (filler)
  5. Rouge (color)
  6. Stearic acid (lubricant, plasticizer)
69
Q

Define Brittle

A

Exhibits little plastic yield before failure

70
Q

Define Yield Strength

What about offset yield strength?

A

End of linear region on stress/strain curve - slope is no longer constant

Offset yield is .2% (arbitrary, higher than proportional/elastic limit)

71
Q

What systolic/diastolic numbers for hypertension stage 2?

For hypertensive crisis?

A

Stage 2: Over 140 / over 90

Crisis: Over 180 / over 120

72
Q

Beyron’s point?

Weinberg’s point?

A

Byron: Posterior margin of tarsus of ear minus 13 mm to outer cantos of eye

Weinberg: 11-13 mm anterior to line drawn from middle and anterior border of tragus

(Very similar in position)

73
Q

Bergstrom’s Point

What famous study discusses this point?

A

10 mm anterior to external auditory meatus and 7 mm below Frankfort horizontal plane

Nagy 2002 - Compared Sam Axiograph using earpiece face bow arbitrary hinge vs kinematic hinge

74
Q

Bonwill triangle

A

4 inch equilateral triangle from mandibular central incisor’s incisal edge to the condyle

75
Q

Balkwill triangle

A

The angle created by the occlusal plane and the bon will triangle

76
Q

Pound’s Triangle

A

Triangle between sides of retromolar pad and the canine

77
Q

Downside to closed mouth impression

A

Does not capture the pterygomandibular raphe adequately on max or mand. This is a distal extension of both arches.

78
Q

What are the four Celenza classes of articulators?

A

Class I: Simple holding instruments: static registration

  • Sub div A: Vertical motion possible, but only for convenience
  • Sub div B: Vertical motion is joint related

Class II: Permit horizontal and vertical motion

Class III: Simulate condylar pathway using averages. Allows for joint orientation. May be arcon or non-arcon.

  • Subdiv A: Accepts static protrusive record
  • Subdiv B: Accepts static lateral and protrusive records

Class IV: Accepts 3D dynamic registrations.

  • Subdiv A: Condylar paths formed by registrations engraved by patient (ex: TMJ instrument)
  • Subdiv B: Condylar paths can be angled and customized from a variety of curvature, modification, or both. (Ex: Stuart Gnathological computer or Denar Model 5A - variety of fossa inserts)
79
Q

Which authors wrote a thorough review of the post palatal seal?

Anatomically, what is the post palatal seal area?

A

Naylor and Rempala

The area correlates with the palatine aponeurosis which is a tough, flexible collagenous structure that intervenes between the posterior bony border of the hard palate and muscle insertions from the soft palate.

80
Q

What does the “ahh” technique and the valsava maneuver demonstrate?

A

Valsalva - Denotes junction of hard palate and palatine aponeurosis - Anterior extent of the post palatal seal - Anterior vibrating line

“Ahh” technique - Denotes junction of palatine aponeurosis and the muscle attachments from the soft palate - posterior extent of the post palatal seal

81
Q

What are concerns with the mucostatic concept aka minimal pressure technique proposed by Page?

A
  1. Denture bearing soft tissues are not “fluid in a confined vessel”
  2. Denture mucosa topography changes over a 24 hour period. True “at-rest” contour is difficult to ascertain.
  3. Materials used during making of impressions and casts, and denture bases not accurate enough to achieve philosophical goals
  4. Resultant dentures unable to resist lateral displacing forces due to lack of flanges
  5. Principle ignores the value of dissipating occlusal loads over largest possible
82
Q

Three objectives of functional impression technique?

Who talk about the “positive pressure technique” in 1931?

Who talks about a “theory which attempts to control pressures during impression making” aka Selective Pressure technique?

A
  1. Record primary denture supporting tissues at rest and under load
  2. Provide clearance for normal functional movement of border tissues
  3. Create added retention which may be achieved by a functional molding of peripheral border tissues.

Pendleton

Frank

83
Q

What is the “external impression”?

A

Beresin and Schiesser - Place recording material (like light body PVS) on facial, lingual, and palatal aspects of trial dentures between denture teeth and peripheral borders.

Close lips, pursue lips as in sucking, and swallow. Or maybe even drink sips of water.

84
Q

What is pressure indicating paste made of?

A

Dimethylpolysiloxane and zinc oxide

85
Q

Result of postpalatal seal over-extension in pterygomaxillary notch area?

How about under-extension?

A

Impingement of pterygomandibular raphe and denture displacement during opening/closing

Would result in post palatal seal on hard unyielding tissue of distal tuberosity - Inadequate seal establishment and inadequate denture retention

86
Q

Result of post palatal seal under-extension in area of vibrating line?

Result of post palatal seal over-extension in area of vibrating line?

A

Would place seal region in hard palate. Tissue does not displace resulting in inadequate denture retention

Would place seal region in movable tissues of soft palate, resulting in gag reflex, sore throat, irritation, inadequate denture retention. Most evident during swallowing, coughing, laughing, or blowing nose

87
Q

What is the vibrating line?

Best way to identify it?

A

Junction between movable and immovable tissues of the soft palate. Aka palatine aponeurosis and muscle attachments from soft palate. Posterior extent of denture border.

Patient saying “ah”

88
Q

How does Nystatin work?

Amount prescribed?

A

Binds to ergosterol, a major cell wall component of the fungal cell wall. Leads to pores forming in cell wall.

4k to 6k units four times daily

89
Q

How does Tylenol work?

Side effect?

Recommended max daily dose?

A

Reduces prostaglandin synthesis, though exact mechanism not fully understood. Possibly COX-2 selectivity as it doesn’t affect the GI or platelets as much as NSAIDS.

Converts arachidonic acid to prostaglandin

Antipyretic and analgesic, not antiinflammatory (not an NSAID)

Side effect: Large dose can cause liver damage

Max dose: 4000 mg

90
Q

How do NSAIDS work?

Side effect:

Recommended max daily dose?

A

Block COX-1 and COX-2 enzymes from creating prostaglandins

Side effect: COX-1 is involved in stomach lining which can result in stomach related side effects

Max: 1200 mg

91
Q

What causes polymerization shrinkage during denture polymerization?

A

Linkage of monomer molecules during polymerization. The individual molecules are arranged more closely to each other.

92
Q

Osseoinduction definition (superior to osseoconduction)

A

The capability of chemicals/materials to induce bone formation through differentiation/recruitment of osteoblast; phenotypic conversion of mesenchymal cells into osteoblasts

(Not only serves as scaffold but triggers formation of new osteoblasts. Most widely studied type of osseoinductive cell mediator is bone morphogenetic proteins (BMP).)

93
Q 
Osseoconduction definition
(inferior to osseoinduction)
A

The process whereby bone grows on a surface or on a scaffolding that is conductive to bone deposition; this is a passive process

94
Q

Describe Hemostasis and Inflammatory phases in detail

A

Hemostasis: Vascular constriction, platelet activation, clotting cascade results in thrombus.

Inflammatory: Inflammatory cells migrate to clean site before new tissue forms. Initial vasoconstriction turns into vasodilation. Granulation tissue forms and then is gradually replaced with connective tissue matrix rich in collagen fibers.

95
Q

Describe Proliferative and Remodeling phases in detail

A

Proliferative: Recruitment, migration, and differentiation of mesenchymal cells. Angiogenesis occurs. Platelets and leukocytes recruit the mesenchymal cells to the implant surface and the mesenchymal cells differentiate into osteo-progenitor cells. Contact osteogenesis starts via a protein layer on implant surface with osteblasts following.

On damaged bone surface, osteoclasts resorb dead bone and distance osteogenesis starts on bone surface with osteoblasts.

Remodeling: Over time, immature woven bone is remodeled by osteoclasts and organized into stronger and better oriented lamellar bone.

96
Q

Types of implant surface treatment

A
  1. Mechanical - Machine, polishing, blasting
  2. Chemical - Acid-etched, oxidized
  3. Physical - Plasma spraying, ion deposition, layer micro etching
  4. Biologics: Bisophophonates, statins, growth factors (BMP’s), hydroxyapatite, calcium phosphate
97
Q

Albrektsson’s original criteria for implant success (4)

A
  1. Individual, unattached implant is immobile when test
  2. Radiograph does not demonstrate evidence of peri-implant radiolucency
  3. Vertical bone loss <0.2 mm annually following implant’s first year of service
  4. Absence of pain, infections, neuropathies, parathesia, or violation of mandibular canal
98
Q

Red/white epithelial dysplasia due to tobacco pouch differential (3)

A
  1. Hyperkeratosis
  2. Epithelial dysplasia
  3. Squamous cell carcinoma
99
Q

Sinus unilocular differenital

A
  1. Antral pseudocyst
  2. Mucous retention cyst
  3. Sinusitis
100
Q

Average Bennett angle

Average horizontal inclination?

Which formula relates to this?

A

7-8°

15°

Hanau’s: L=H/8 + 12

101
Q

Reasons why Taylor and Bidra advised not to follow IMLT? (3)

A
  1. No evidence of clinical implication of IMIT
  2. Lack of clear consistent terminology of IMILT and timing of side shift
  3. Unclear whether induced or non induced methods could cause it
102
Q

Anterior loop of mental foramen

  • How far away to place implant anteriorly?
  • How about superiorly?
  • Which instrument can be used to check if anterior loop is present?
A

Place 6 mm anterior to the foramen

Place 2 mm superior to the foramen

Naber’s Probe - if probe is patent towards the distal then no loop. It probe is not patent to distal then it goes mesial and does have a loop.

103
Q

DFDBA vs FDBA

- Which is osteoinductive and which is osteoconductive?

A

DFDBA: Osteoinductive due to BMP

FDBA: Osteoconductive

104
Q

What temperature does bone necrose?

A

47°C for 1 minute

105
Q

Two studies on if intraoral scanners can be used for full arch implant impressions?

A
  1. Wulfman 2020 JPD - 5 in vivo studies - In vitro seems feasible but no in vivo.
  2. Zhang 2021 Int J Oral Imp - No (mostly in vitro studies)
106
Q

Systematic Review on full arch scanning for complete denture

A

Resaie 2021 JoP - Accuracy not there. Problems included: Scanning mobile tissues, needing markers, large scan heads, specific scanning techniques, and operator technique

107
Q

Calcium phosphate - Osteoconductive, osteoinductive, osteogenic?

  • Short term effect?
  • Long term effect?
A
  1. Osteoconductive and osseoinductive
  2. Shorter - Higher integration, faster bone attachment, higher interfacial attachment strength
  3. Longterm (6 months+) - No difference in terms of stability, integration, and bone formation
108
Q

Linden 1973/1978 - What values were recorded on their 163 patients for average condylar inclination, average immediate mandibular lateral translation, and average progressive side shift?

For FMR’s what values are recommended?

A
  1. Condylar: 45°
  2. IMLT: 7°
  3. Progressive side shift: 0.75 mm
  4. Condylar: 20-25°
  5. IMLT: 10°
  6. Progressive side shift: 1.5 mm

ACP App Part 4 (7 decks)

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