Page 17 - 根管治療的美麗與哀愁 (轉、合篇)

࣬၍طᐕٙߕᘆၾۑฎ ( 轉、合篇 )

வࡈ஗፯֛ٙ˴৵Ըᇭ (master GP cone)
2. ί࣬၍˴ഢٙ࣬φ၌݊щяତ̈Ϟቇ຅ٙΫזڜɢ (tug back sensation)eאϞ஗ແ

ИٙชᙂdϾяତவࡈڜɢਜݬd̀඲ܘ׼ᆽή̥̈ତί࣬၍ஷ༸୞ᓃۃٙɓʃݬ
(2~3mm)dϾڢί࣬၍ʕݬeא׵ڿ௅ٙ΂ОɓஈfϤ̮d߰ซ༶݄͜ᅃˤา˫ᇭۧ
ٜᇘ੗ᏚᏀ˓جੂБ࣬၍܆෬ۃdԱృεϋٙᑗґ຾᜕dһᑺӺவࡈ஗፯֛Ъމ˴৵
Ըᇭٙφ၌

3. ֝൷ᕎ࣬၍ஷ༸୞ᓃ (canal terminus) ί 0.5~1.0mm ˸ʫdЇ׵ࡳ၇ઋرɨ༈൷ᕎ࣬
၍ஷ༸୞ᓃ 0.5mm kϾ׵ࡳ၇ઋرɦც൷ᕎ୞ᓃ 1.0mm ճk࿁׵༈νОЪ̈ቇ຅፯
኿dɽߧɪ̀ცϽඎ˸ɨ఻ࡈΪ९ :
(1) ࣬၍ٙᛃϜܓ (curvature of canal) ᔷ

຅ᛃϜܓฏɽdЪމ˴৵Ըᇭٙφ၌Ꮠ༈ࠅฏટڐ࣬၍ஷ༸୞ᓃฏλf ᇐ
(2) ࣬၍ஷ༸୞ᓃ̈ɹٜٙࢰɽʃ (size of canal opening)
୞ᓃ̈ɹٜٙࢰฏɽࣛdԟჿ˴৵Ըᇭٙφ၌ఱც൷ᕎஷ༸୞ᓃ̈ɹ೹Ⴣɓᓃf
ɓছ͍੬೯ԃҁΌٙ˫࣬dᐼҎૐঐਗ਼Չ࣬၍ஷ༸୞ᓃ̈ɹdЇˇࠅᓒ࢝Ց ISO

#25 ໮dШ߰૧ආБ࣬̂ٙ࣬၍dՉ୞ᓃ̈ɹٜٙࢰฏɽࣛdԟჿ˴৵Ըᇭٙφ
၌dఱცࠅ൷ᕎ୞ᓃ̈ɹ೹ฆჃɓᓃfΪމνϤ˙ঐᒒеաᆠழʷܝٙ৵Ըᇭd
ίቊٜۧᏚᏀ༺Ց̀඲ࠅϞٙᇘ੗ܓʘۃdɓɨɿఱʊ຾஗ᏚᏀՑ༺࣬̂ٙͦᅺ
ଉܓdϾϤՍא஢ί࣬၍ʕݬձڿ௅ڝڐٙਉ˕࣬၍ஷ༸ (lateral canals)d̙ঐே

ᒔӚϞᐏ੻ୖྼٙ෬̂f
(3) ࣬၍ڗܓ (length of canal)
߰࣬̂܆෬ٙͦᅺڗܓཀڗd˴৵Ըᇭٙφ၌ఱ֝ฏટڐ࣬၍ஷ༸୞ᓃ̈ɹฏλf
܆෬ٙͦᅺڗܓ߰೵׵ 14mmdאڗཀ 23mm ே݊᙮׵ˢ༰ѢᗭࣩٙԷfɓ͇܆

෬ٙͦᅺڗܓ߰˄೵dԟჿϞ̙ঐʑ࡝ක֐ࠅਂٜۧᏚᏀਗЪࣛd˓ʕٙᏚᏀʈ
Ո (plugger) ɓɨɿఱʊ຾ԸՑ൷ᕎ࣬၍ஷ༸୞ᓃ̈ɹٙ 5~7mm ஈdԴ੻ʘۃί
ٜۧᏚᏀཀ೻ʕd͉࣬ೌجאӚዚึᜫʊաᆠழʷٙ৵Ըᇭdঐ੄஗ୖྼή෬̂
ආɝ˴࣬၍ഢd˸ʿπίٙਉ˕࣬၍ஷ༸f޴࿁ήi߰܆෬ٙͦᅺڗܓཀڗd˴

৵Ըᇭٙφ၌ఱ֝ฏટڐ࣬၍ஷ༸୞ᓃ̈ɹฏλdΪމ߰܆෬ɨᏀٙཀ೻ܵᚃ˄
ɮdԟჿఱϞ̙ঐਗ਼Դ݄ஔ٫࢙׸ପ͛ೊᅇชdཀ೻ʕఱ࢙׸೯̰͛Ⴌf˸ɪ๟
ۆே౛౥Иə˸ܝ
4. Ύ޶˴৵Ըᇭί၍ഢʕ݊щၾ༈˫࣬ٙݴΣɓߧk ( у flow ࿁ʔ࿁k ) ცᏨൖϤ˴

৵Ըᇭ׳ආ၍ഢʘܝd΢ࡈਜݬ݊щே͍λЗ׵၍ഢٙʕ̯f
B. ટɨԸdਗ਼ཫ௪Դ͜׵࣬̂ٙ৵ԸᇭආБऊݭၾ૶ᆎfਗ਼ۃࠑૢ΁ேʊՈԑٙ˴৵Ը

ᇭd˸ʿཫ௪Դ͜׵࣬၍෬̂ٙהϞڝ᙮৵Ըᇭଡ଼dໄɝϣಣაඒ๓૰ʕdऍظɓ
ʱᙒ˸ɪЪऊݭdʘܝΎ׳ආৢၚʕЪ૶ᆎfᎇܝdک̙ᘱᚃආБ܆෬ۃՉ˼ٙ๟
௪ၾᏨൖӉ᜷fν

C. ಻༊Ԩ፯኿ቇ຅ٙᏚᏀʈՈ (prefit pluggers)f ༶݄͜ᅃˤ˓ج๟௪࣬၍̂෬ཀ೻ʕd
ཫ΋ጜ፯Υ֝Դٙ͜ᏚᏀʈՈଡ଼d݊޴຅ࠠࠅٙӉ᜷ i

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