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Protetica > Edentatie partiala redusa > Flashcards

Edentatie partiala redusa Flashcards

1
Q

Daca sant g-d de > 2mm, unde se plaseaza limita cervicala?

A

gingivectomie-sg-d de 1,5mm–> limita cervicala la 0,5-0,7 mm

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2
Q

Avantaje Polisulfide

A
  1. reproducere exacta detalii camp protetic
  2. elasticitate buna
  3. rezistenta la rupere mare
  4. cap umecatre buna
  5. cel mai ieftin elastomer
  6. t. lucru suficient
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3
Q

Ce ceramica are nevoie de 2mm grosime ocluzal/incizal pt coroane totale?

A
  • -feldspatica
  • -cu disilicat de Li
  • -Zr cu disilicat de li
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4
Q

Dimensiune transversala conectori ceramici

A
  • 6-9-12 mm2
  • pt forntali/pm/m
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5
Q

La ce forte sunt eficiente frezele speciale pt preparatie?

A

50-100 gF

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6
Q

Adancime sant gingivo-dentar maxima

A

1,5 mm

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7
Q

Enumera principalele sisteme ceramice

A

1.Cu matrice vitroasa 2.Policristaline 3. Cu matrice organica

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8
Q

Dimenisune transversala a conectorilor metalici

A

4 mm2

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9
Q

Indicatii si marime prag rotunjit (sfert de elips, chamfer, long chamfer)

A

0,2-1 mm coroane monolitice si fatete

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10
Q

Dezavantaje Cimenturi Compozite

A
  • Dificultati utilizare
  • tehnica dificila
  • nu elibereaza F
  • Costisitoare (timo+materiale)
  • control necesar umiditate
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11
Q

Indexul Eccles

A

Clasa I Clasa II, cu 2 tipare Clasa III, cu 4 tipare

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12
Q

Dezavantaje FOZ

A
  • sensibilitate pulpara postcimentare
  • sigilare limitata(pt ca doar retentie mecanica)
  • NU elibereaza F
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13
Q

Ce e mai periculos decat suprafetele subconturate?

A

convexitatile vestibulo-linguale exagerate

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14
Q

Contraindicatii metoda electrochirurgicala

A
  1. pacemaker
  2. pompe insulina
  3. aproape de restaurari metalice
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15
Q

Reducere DL pt restaurari metalo-ceramice

A
  • 2mm cuspid ghidaj - 2,5 mm cuspid sprijin
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16
Q

Avantaje CIMR

A
  1. Simplitate utilizare
  2. adeziune chimica ridicata
  3. sigilare buna
  4. solubilitate orala scazuta
  5. Eliberare F
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17
Q

Unde apare, in cursul prepararii, probabilitatea dechiderii camerii pulpare?

A
  • Juxtacingular-la dd frontali
  • ocluzal
  • fete proximale (la prepararea pragului+altele)
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18
Q

Avantaje Siliconi aditie

A
  1. Reproducere excelenta detalii
  2. stab dimensionala excelenta
  3. contractie priza minima
  4. t. priza scurt
  5. rezist. rupere buna
  6. gust neutru
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19
Q

Dezavantaje CIMR

A
  • Film ciment gros
  • Expansiune datorita absorbtiei de APA
  • Risc fractura lucrare integral ceramica
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20
Q

Distanta necesara intre jonctiunea metalo-ceramica si contact ocluzal/proximal

A

1,5 mm

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21
Q

Exemple de PFU extracoronare

A

Coroane Totale Coroane Partiale: clasice si modificate Coroane ecuatoriale Fatete

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22
Q

Enumera ceramicile cu matrice organica

A

-rasini nanoceramice -vitroceramici in matricea organica interpenetranta -ceramici Zr-Si cu matrice organica interpenetranta

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23
Q

Substante folosite pt dezinfectat amprenta(x4)

A
  1. Glutaraldehida 2% (10m)
  2. iodoform
  3. NaOCl
  4. Fenoli
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24
Q

Grosimea minima pt metal?(x3)

A

Cuspid spirijin- 1,5 mm Cuspid ghidaj- 1 mm Margini- 0,5 mm

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25
Q

Care sunt dezavantajele cimentarii provizorii? (x3)

A
  • deteriorare lucrare la descimentare
  • inflamatie pulparadinti stalpi vitali (microinfiltratie mg)
  • dificultati suplimentare–>pregatire intrados coroane
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26
Q

Preparare inlay/onlay ceramic

A
  1. Rotunjire unghiuri intalnire
  2. Mg cavitate-nebizotate, la 1,5-2mm de contactul ocl
  3. Adancime prep= 1,5 mm
  4. Perete pulpar-in plan sau usor concav
  5. latime V-O= 2,5 mmin istm inclusiv
  6. pereti axiali divergenti 6-10 grade
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27
Q

Ce elastomer nu produce produse II volatile?

A

Siliconii de aditie

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28
Q

Dezavantaje polieteri

A
  • rigiditate f, mare (atentie demulare)
  • imbibitie
  • scumpi
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29
Q

Tipuri de ceramica cu matrice vitroasa

A

-de origine naturala (feldspatica) -de sinteza -aluminoase infiltrate cu faza vitroasa(cad/cam, slip casting)

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30
Q

Ce ceramica are nevoie de 1,5 mm grosime coroane ?

A

-Policristaline - Cu Matrice organica

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31
Q

Ce elastomer elibereaza alcool in reactie?

A

Siliconii de condesare–>contractie amprenta

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32
Q

Care dintre ceramicile de sinteza nu se realizeaza cad/cam ?

A

pe baza de fluoroapatita- sinterizare si presare

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33
Q

Plasare preferentiala a contactelor ocluzale si proximale in rmc?

A

-ocluzal ceramica -proximal metal

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34
Q

Enumera erorile din amprentare(x10)

A
  1. Limita preparare neclara
  2. Bule aer in zone critice
  3. Rupturi amprente
  4. Materiale de amprenta care nu au facut priza
  5. Vizibilitate lingura prin amprenta
  6. Omogenizare incorecta material de amprenta
  7. Desprindere lingura
  8. Fuga materialului fluid
  9. Snur atasat la amprenta (tehn. cu 2 snururi)
  10. Lipsa inregistrarea tuturor elementelor campului protetic
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35
Q

Cu ce freze se fac adaptarile ocluzale pt lucrari metalice?

A

freze extradure la turbina, cu lamele elicoidale, fara striatii transversale

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36
Q

Ce substante vc sunt folosite in metoda chemomecanica?

A
  1. Epinefrina
  2. Decongestionanti nazali-ozimetazolina sau nazali-tetrahidrozolina
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37
Q

Daca sant g-d de 2mm, unde se plaseaza limita cervicala?

A

la jumatate

38
Q

Indicatii si marime prag Drept

A

1mm -Coroane integral ceramice , coroane mixte si bonturi scurte

39
Q

Dezavantaje siliconi aditie

A
  • Hidrofobi
  • capacitate umectare scazuta
  • priza inhibata de manusi latex/subst. astringente
  • scumpe
40
Q

Grosime ceramica pt fatete zr+disilicat Li/rasini nanoceramice?

A

0,4 mm

41
Q

Specificatie la prag BOPT

A

Cervical sa aiba o structura monolitica (metal/Zr)

42
Q

Dintre elastomeri, care este cem hidrofil?

A

Polieterii

43
Q

Grosime ceramica pt fatete cu ceramica de disilicat Li?

A

0,3 mm

44
Q

Avantaje Cimenturi Compozite

A
  1. Adeziune chimica ridicata
  2. sigilare buna
  3. solubilitate orala redusa
  4. rezistenta de adeziune ridicata
45
Q

Clinic este acceptat hiatusul dento-protetic pana la?

A

120 microni

46
Q

Dezavantaje CIS

A
  • e nevoie de control solubilitate strict in cimentare
  • solubil in fluide acide
  • potential iritant pulpar
47
Q

La cat timp apar leziuni pulpare ireversibile dupa contactul electrod-dinte?

A

>0,4 s

48
Q

Materiale folosite pt depistare contacte in intrados coroane

A
  • amestec de rosu de Paris cu terebentina
  • sprayuri ocluzale’
  • ceara
  • siliconi fluizi speciali
49
Q

Cu ce se cimenteaza puntile Maryland?

A

Cu ciment Compozit

50
Q

ce ciment adera exlusiv mecanic?

A

FOZ

51
Q

Indicatii si marime prag rotunjit lat

A

>1mm coroane mixte si integral ceramice

52
Q

Coroana metalica 3/4 Canin maxilar

A
  1. Reducere 1mm Lingual + Incizal
  2. Prag sfert elipsa
  3. limita incizala- directie oblica vest-linguala (coninvers)
  4. Incizal- pin intradentinar de 2mm adancime
53
Q

Zone critice Amprenta?

A
  1. Lc
  2. supraf proximala dd. vecini
  3. supraf. ocl. dd antagonisti
54
Q

Care e raportul ideal dintre coroana si radacina?

A

Subunitar

55
Q

Avantaje Polieteri

A
  1. Hidrofili
  2. stabilitate dimensionala excelenta
  3. reproducere exacta detalii
  4. rezistenta rupere buna
  5. t.priza scurt
  6. malaxare automata
56
Q

Uzura helicoidala Ackerman in ce ocluzii apare?

A
  • Ocluzie adanca cilindrica
  • Oclzuie psalidodonta “ad palatum”
  • Ocluzie labiodonta “ad linguam”
  • Ocluzie inversa
57
Q

Avantaje siliconi condensare

A
  1. reproducere exc. detalii
  2. t. priza scurt
  3. inodor
  4. orice culoare
  5. elast. f buna
  6. rezist. rupere buna
  7. gust neutru
58
Q

Reducere DF pt restaurari metalo-ceramice

A

-1 mm lingual -2 mm incizal

59
Q

Conservatibilitate praguri

A

BOPT>prag rotunjit>prag drept

60
Q

Dezavantaje polisulfide

A
  1. hidrofobi
  2. stabilitate dim scazuta (turnare in 1 ora)
  3. miros nasol
  4. t. priza lung- 12 m
  5. pateaza
  6. gust amar
61
Q

Care este prevalenta lezarii iatrogene a dintilor vecini?

A

60-78%

62
Q

Care este hiatusul protetic, conform ADA?

A

25-40 microni

63
Q

Care sunt PFU-urile ce nu pot fi elemente de agregare?

A

Inlay-uri ocluzale RCR

64
Q

Ce ceramica policristalina e folosita doar pt structuri?

A

pe baza de alumina

65
Q

Ce se foloseste pt stratificarea structurii de Zr?

A

Ceramica pe baza de fluoroapatita

66
Q

Enumera medicatia antisialogoga cu anticolinergice

A
  • atropina
  • dicilomina
  • bromura de metantelina
  • bromura de propantelina
  • glicopirolat
67
Q

Preparare Coroana Metalica 3/4 Pm Maxilar

A
  1. Reducere cu piatra ovalara a versantului int a cuspidului vestibular
  2. Limita coronara, fie cu contrabizou, fie cu sant ocluzal ce uneste santurile prox
  3. Separatie prox, dinspre lingual- cu pastrare contact vestibular
  4. Fata proximala: 0,6 mm intre dd vecini/ cu pereti divergenti spre vest, unde grosimea metalului scade progresiv
68
Q

Ce se intampla daca nu se aseaza complet pe preparatie?

A
  • scade retentia cu 19-32%
  • se pierde adaptarea cervicala
69
Q

Meidcatie colinergica cu atentie cui?

A
  • batrani
  • glaucom
70
Q

Substante astringente folosite in metoda chemo-mecanica

A
  1. Clorura de Al (are si rol hemostatic)–>0,14 mm largire, >15% nasol
  2. Sulfat feric-hemostaza excelenta, colorare tranz, poate interefera cu siliconii de aditie
71
Q

Raport radacina/coroana RCR

A

Supraunitar

72
Q

La ce distanta de pulpa apar variatii de presiune?

A

<2mm

73
Q

Indexul Smith-Knight pt uzura

A
  1. 0-sm intact
  2. 1-sm cu modificari de contur
  3. 2-uzura superf sm+dentina, pe <1/3
  4. 3-uzura medie(1-2mm)+expunere dentina>1/3
  5. 4-uzura totala sm+expunere dentina secundara/pulpa, >2mm
74
Q

Enumera ceramicile de sinteza

A
  • -Leucitice
  • -Pe baza de disilicat de Li+derivati
  • -Pe baza de fluoroapatite
75
Q

Care sunt dimensiunile santurilor proximale din coroanele partiale?

A

Lungime de 2-4 mm Adnacime de 1mm

76
Q

Cum se fac dau calitati hidrofile siliconilor de aditie?

A

prin sulfactanti

77
Q

Cel mai folosit antisialogog?

A

clonidina-0,2 mg- medicament antihipertensiv

78
Q

Coroana metalica 3/4 Pm Mandibular

A
  1. Prepareare fata distala pe toata latimea V-O
  2. Santul mezial e situat in 1/3 vestibulara
  3. Santul distal e spre 1/2 fetei proximale
79
Q

Adancime sant gingivo-dentar superficial

A

0,5-0,7 mm subgingival plasarea preaparatiilor la un sant de 1,5 mm

80
Q

Grosime banda Mylar /folie art pt verificare contacte

A

8-12 microni

81
Q

Dezavantaje siliconi condesare(x3)

A
  • capacitate umectare scazuta
  • f hidrofob
  • stab dimensionala scazuta
82
Q

Grosime metal pt restaurari metalo-ceramice?

A

0,5 mm

83
Q

Ce ceramici nu sunt gravabile cu HF?

A

Policristaline si cu matrice organica

84
Q

Cu ce freze se face adaptarea ocluzala pt lucrari ceramice?

A
  • pietre din oxid de aluminiu
85
Q

Pt ce se indica colarea/cimentarea adeziva

A
  1. Rest. integral ceramica
  2. punti adezive Maryland
  3. orice situatie cu dorinta de a se suplimenta mentinerea dento-protetica
86
Q

Avantaje FOZ

A
  1. rezistenta buna la compresiune
  2. t.lucru suficient
  3. traditie utilizare
  4. ieftin
87
Q

Avantaje CIS

A
  1. Adeziune chimica buna
  2. sigilare buna
  3. Eliberare F ridicata
  4. deformare plastica scazuta
88
Q

Tipuri de praguri? (x4)

A

-Drept (shoulder) -Rotunjit (chamfer, long chamfer) -Rotunjit lat (deep chamfer, rounded shoulder) -BOPT

89
Q

Tipuri de fatete

A

cu preparatie vest prep vestibulara si preparatie linguala no prep fatete duble fatete fara segmentare

90
Q

Fenomenul de arcuire al corpurilor de punte (x2)

A
  • direct prop. cu Lm-d3
  • invers prop. cu h c-o3
91
Q

Ce se face la lucrarile din zirconia?

A
  • sablare cu oxid de aluminiu de 30-50 microni intrados
  • la 2 bari
  • timp de 20-30 s
  • aplicare 5 m primer cu MDP

Protetica (6 decks)

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