Biomekanika pergerakan gigi Flashcards

1
Q

Optimum force?

A

Gaya untuk gerakin gigi tanpa ada rasa sakit

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2
Q

Prinsipnya?

A

Tekanan dlm waktu lama -> terjadi pergerakan gigi karena remodeling tlg -> resorpsi di pressure side dan deposisi di tension side

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3
Q

Prinsip sebelum remodeling?

A

Inflamasi akut scr spontan -> resorpsi & aposisi

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4
Q

Gaya besar?

A
  • cepet bikin rasa sakit
  • nekrosis
  • undermining
  • mobility
  • pergerakn scr tiba2
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5
Q

Gaya ringan?

A
  • relatif ga bikin rasa sakit
  • vital
  • frontal
  • relatif ga goyang
    -pergerakn sedikit demi sedikit
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6
Q

Jenis Force ortho?

A
  1. Continuous : gaya konstan cocok untuk frontal dgn gy ringan
  2. Interrupted : gaya lama kelamaan berkurang
  3. Intermitten : penururan gaya scr tiba2 jd 0 cocok untuk undermining dgn gy besar ex alat cekat, lepasan, head gear
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7
Q

Couple?

A

2 gaya sm besar tp berlawanan arah -> hasilin rotasi murni

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8
Q

Stress?

A

Gaya yg diaplikasikan per unit area

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9
Q

Strain?

A

Distrosi internal per unit area (perubahan/dampak dr stress)

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10
Q

CORS?

A

-Titik dmn benda itu terkonsentrasi
- gigi gerak tanpa terjadi rotasi
-relatif konstan
- akar tunggal : (1/3-1/2 akar) antara alevolaf crest/CEJ ke apeks akar
-akar ganda : 1-2 mm ke arah furkasi

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11
Q

CORT?

A

-titik yg jd pusat rotasi
-2 gaya diterapin sama2 (force & couple?) ke mahkota biar ada gerakan akar

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12
Q

Moment?

A

Kecenderungan gaya menghasilkan rotasi
Gaya x jarak ke CORS = rotasi

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13
Q

Uncontrolled tipping?

A

Mahkota gerak ke 1 arah & akar gerak ke arah yg berlawanan

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14
Q

Bodily movement/translasi?

A

Akar & mahkota bergerak searah dgn gaya

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15
Q

Intrusi?

A

Body movement sepanjang sumbu gigi ke arah apeks

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16
Q

Ekstrusi?

A

Body movement sepanjang sumbu gigi ke arah oklusal

17
Q

Root movement?

A

Mahkota ttp diam tp akar gerak ke labiolingual/mesiodistal

18
Q

Controlled tipping?

A

Mahkota gerak ke 1 arah & sedikit/tdk ada gerakan akar ke arah yg berlawanan

19
Q

Rotasi?

A

Gerakan ke labial/lingual memutari sumbu gigi
dpt dicapai dgn : couple & single stop forces
Hanya ada moment

20
Q

Forces yg 35-60 gm apa aja?

A

Tipping, rotasi, ekstrusi

21
Q

Berapa force untuk translasi?

A

70-120 gm

22
Q

Berapa force untuk root uprighting/movement?

A

50-100 gm

23
Q

Berapa force untuk intrusi?

A

10-20 gm (paling rendah)

24
Q

Gaya min untuk gerakin gigi?

A

4-8 jam. Pergerakan gigi akan meningkat secara efektif apabila durasi gaya yang diberikan lebih lama.

25
Q

Teori pressure by schwartz?

A

3 tahap pergerakan gigi:
(1) Perubahan aliran darah dihubungkan dengan tekanan pada ligamen periodontal,
–penurunan aliran darah ketika PDL tertekan–> oksigen berkurang, karbon dioksida (CO2) meningkat
(2) terjadinya pelepasan sitokin, prostaglandin dan pesan kimia lain
(3) Aktivitas sel – sel.