Page 21 - 根管治療的美麗與哀愁(起承)2020-0422(01)

࣬၍طᐕٙߕᘆၾۑฎ ( ৎeוᇐ )

PDL ί X Έᅂ྅޴࿁ʘ˫࣬ڌࠦdуהፗՑ༺ RT ٙԟɓᓃd݊ʔ׸஗ׁଫٙiΝࣛd
ʔሞ੽ࡳࡈࠦΣᏨൖdቛ ( אᇭ ) ০φ၌̴Ց RT ԟɓᓃdഒ࿁̙݊˸஗ʔᓙࠠል࢝ତ
ٙ (re-producible)( ྡ A2dྡ A3dྡ A4dྡ A5)f¤̤ɓ̮௅ਞϽᓃ (outer reference

point)dۆ݊ࠅίطᐕ˫ڿ௅ഐ࿴ɪdЪ̈ ( אҬՑ ) ɓࡈЗ׵௰ટڐ ( ה૧ඎ಻ ) ࣬၍ ৎ
ɝɹɪ˙ٙᖢ̨֛̻fϤ̮dʲাცࠅԴ͜ܘʃٙዖͤ˟ྦ (rubber stop) Ԩঐٜۧ׵ඎ ᇐ
಻ٙቛ০ɪd˸ࠥЭ΂ОΪவࡈዖͤ˟ྦݩુdהҖϓٙฆʃႬࢨ ( ྡ A6)f¥

ྡ A2 ˴ᇭ০༊φࣛd ྡ A3 ࣬၍܆෬ٙͦ ྡ A4 ༊φࣛdᆽႩ ྡ A5 ٜۧᏚᏀ࣬̂
ʈ Ъ ڗ ܓ ٙ ඎ ಻ ʥ ˸ ᅺଉܓdۆᏐ˸ॷ০಻ ˴ᇭ০̙˸૩ೌڜᖟή (down packing) ࣛd ˫
RT Ъމʫ௅ਞϽᓃ ༊ܝٙ৻᐀ʹึஈdЪ ׳Ց RTdΝࣛࠅϞቇ ࣬୞͋၌੻яତ̈ͣʕ
މڗܓඎ಻ٙʫ௅ਞϽ ຅ٙΫזڜɢ ੭ͣdʑจፗᐏ੻੗ྼ
ᓃ (minor opening) ٙ࣬φ܆ௐdவɗΪ၍
༸୞͋ݬʘዑʲࠦʔึ
࡝̷͍݊෥Җהߧ

Reason for using a small rubber stop

‧Better visibility -- allows us to see canal
clearly, without obstruction

‧Any angulation of the rubber stop along the
file will be less important i.e. cause less error

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ྡ A6 ίቛ০ɪԴ͜ฏʃٙዖͤ˟ྦdඎ಻ʈЪڗܓࣛd༰ʔึ̈ତ਋
ࢨiΝࣛdɰ༰ʔึѳᖟڜཞਗ਼ቛ০׳ආ࣬၍ɝɹٙൖ௉

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