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Periodontology > Units 5-8 > Flashcards

Units 5-8 Flashcards

1
Q

What are the objectives of periodontal Sx?

A

Accessibility, elimination of inflammation, enable plaque control, eliminate PPD’s, correct gingiva/bone defects, correct mucogingival defects.

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2
Q

What is tooth “hopeless”??

A

Some clients don’t respont to sx = tooth extracted. Some disease is too advanced.

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3
Q

What is required before sx?

A

good OH, healthy, no caries, extract bad teeth. no smoking.

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4
Q

What is biologic width?

A

key to crestal bone remodelling, natural seal around tooth protruding from bone in oral environm’t.

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5
Q

Regarding to perio sx, what does more divergence mean?

A

greater bone betw’n teeth.

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6
Q

How are bony defects named?

A

by # of walls remaining

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7
Q

Define “repair”

A

natural response to wound, healing by formation of tissue, does not truly restore (scar)

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8
Q

Define “reattachment”

A

reunion of CT & root that has NOT been separated by disease.

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9
Q

Define “ new attachment”

A

Union of pathologically exposed root w/ CT or epithelium. Occurs where perio had destroyed attachm’t.

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10
Q

Define “regeneration”

A

Original tissue restored to previous type and function. Ultimate goal w/ perio sx.

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11
Q

What is gingivoplasty and gingivectomy?

A

Tx gingival overgrowth. (doesn’t tx bony defect),

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12
Q

What are causes of ginigval overgrowth?

A

Genetic, hormonal, med’s.

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13
Q

What is perio flap surgery?

A

Most common sx. gingiva is lifted to expose roots @ bone, retains blood supply. Can increase zone of attached ginigva

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14
Q

Full thickness vs patial thickness flaps?

A

Full - expose bone.

Partial - split thickness, indicated when flap has to be positioned apically, no bone exposure.

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15
Q

Whats the difference between apically positioned and modified widman post-surgery?

A

Apically - tissues repositioned apically and sulcular lining excised.
Modified widman - tissue replaced close to original position.

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16
Q

What is osteoplasty?

A

Recontouring of non supporting bone.

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17
Q

What is ostectomy?

A

Removal of supporting bone.

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18
Q

What are contraindications for osseous sx?

A

Advanced perio, min bony support, aesthetics, deep vertical defects, anatomic structures.

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19
Q

What sx technique is used for horizontal or vertical bone loss?

A

Horizontal = suprabony

Vertical (angular) = infrabony

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20
Q

Class of infraosseous defect: “scooped” 2-wall defect w/ bu & ling walls intact

A

Crater

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21
Q

Class of infraosseous defect: 1 wall defect w/ usually a bu or ling wall remaining

A

Hemiseptal

22
Q

Class of infraosseous defect: 3 wall “wrap around” including line angle of toot + ling or bu surface

A

Circumferential

23
Q

What are indications for crown lengthening?

A

needing increased length for restoration, tooth fracture near margin, subgin caries.

24
Q

What is biologic width?

A

Critical for maintaining tooth and perio health - 1mm sulcus, 1mm gingival CT, 1mm JE

25
Q

What is ridge augmentation?

A

Sx to improve max/mand ridge height/width – endentulous areas. Future implants, improve denture fit.

26
Q

What is an autograft?

A

from self - source tuberosity, tori or exostoses.

27
Q

What is allograft?

A

guman, demineralized freezedried cadaverous bone.

28
Q

What is Xenograft?

A

other species or synthetic.

29
Q

What is a frenectomy?

A

done w/ graft, removal/ re-positioning of max labial or mand ling frena. w/ scalpel or laser

30
Q

What is root resection?

A

endo/class III/IV furcations, decayed or resorbed roots.

31
Q

What is root hemisection?

A

extensive furcation involvement or fractures tooth/root.

32
Q

What is bisection ?

A

cutting molar in half to create 2 separate.

33
Q

Function of implant?

A

Acts as root

34
Q

Function of transgingival abutment?

A

supports prosthesis, fixed or removable.

35
Q

What are characteristics of titanium?

A

biocompatible

poor conductor

36
Q

Type of implants: subperiosteal

A

placed on surface of bone beneath periosteum

37
Q

How long does it take for osseointegration for max and mand?

A

max - 6-9 months

mand - 3-6 months

38
Q

When is and implant considered to be a failure?

A

mobile or shows bone loss greater than 1.0 mm in 1 year, greater than 0.2 mm a year thereafter.

39
Q

What is perio implantitis?

A

plaque, gingivitis, same bacteria as periodontitis.

40
Q

What is maintenance of implants?

A 
Chx.
Superfloss
Floss threaders
Rubbr tips
Yarn or gauze
NO METAL, no probing.
41
Q

What is guided tissue regeneration?

A

Sx procedure to encourage regrowth of lost periodontal attachment structure.

42
Q

What is ultimate goal of periodontal therapy?

A

Halt disease, prevent, regenerate.

43
Q

What makes up periodontal unit?

A

Gingiva: CT and epithelium.
PDL
Alveolar bone
Cementum.

44
Q

How much does epithelium grow a day?

A

.5-1.0 m per day

45
Q

How fast does CT (gingival and PDL) take to grow?

A

10-14 days

46
Q

How fast does CT bone?

A

weeks to months

47
Q

What are contraindications for Guided tissue regeneration?

A

Alcohol/ drug abuse
Psychological problems
Debilitating or uncontrolled disease.
Pregnancy.

48
Q

What are the different types of barriers?

A

Resorbable - synthetic polymers, bovine and porcine collagen, calcium sulfate. ( breaks down over 3-6 wks)
Non resorbable - expanded polytetrafluoroethylene (most common ) - come w/ titanium in them for strength. (3 wall = best result 2 sx)

49
Q

RDH considerations of GTR

A

no stretching of lips to see, Chx. soft foods chew away from area, no water piks, no probing for couple months.

50
Q

osteogenesis?

A

Describes potential for new growth.

51
Q

osteoconductive?

A

framework for outside bone cells to penetrate graft during bone formation.

Periodontology (2 decks)

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