| Cavity prepared on the crown of the tooth for the endodontic instruments and materials to gain direct path to the ____, for _____ and ______ | apex; biomechanical preparation; obturation |
| The ideal access cavity should have no _____, allow instruments to slide straight into the canals, and provide _____ with minimal possibilities for perforation | undercuts;good visibility |
| Objectives of an access preparation:To create a ____ path to the canal system up to the apex | smooth, straight-line |
| Objectives of an access preparation: To remove ___ and ___ from the chamber | caries; debris |
| Objectives of an access preparation:3 To allow for complete ____ and ease of ____ | irrigation; shaping |
| Objectives of an access preparation: To establish maximum visibility to ____ to the end of the canal | gain access up |
| Ideal access results in:____entry into the canal orifices, with the line angles forming a ___ that drops smoothly into the canal or canals | Straight; funnel |
| Ideal access results in: _____endodontic result | Quality |
| "Variation of root canal anatomy is more of a ____than an exception." | rule |
| c-shaped canals are common among | koreans and chinese |
| canal atrophy happens more on the ___ rather than ____ | coronal; apex |
| KEY OBJECTIVE: Open the canal for easy ___________ | cleaning, shaping, obturation |
| main objective is to | find canal orifice |
| The best area to gain access to the apical foramen is through the ____or ____ | labial; incisal edge |
| But why do we put our access to the lingual? | ESTHETICS |
| Main cause of persistent infection is due to | inadequate access, Inadequate cleaning and shaping of the canal |
| common in apical curvatures; how to preven; when using ss always precurve kahit di sigurado; step being created | ledges |
| danger zone | bifurcation surface |
| The success of an Endodontic Treatment rests heavily on the proper access cavity preparation (pyramid of endodontic treatment) | obturation, biomechanical preparation, access cavity preparation |
| STEPS IN ACCESS CAVITY PREPARATION:Needed in diagnosis and assessment | Study the pre-operative radiograph |
| STEPS IN ACCESS CAVITY PREPARATION:If there is pulp exposure when doing caries removal, you may proceed locating the canals then continue doing build-up | Remove all caries, weak restorations and do crown build-up after locating the canal |
| point of entry | middle 3rd |
| Final outline is based on the______ | shape of pulp chamber |
| STEPS IN ACCESS CAVITY PREPARATION:after build up; remove caries muna; expose orifice; build up neatly restore the walls properly | Rubber dam isolation |
| STEPS IN ACCESS CAVITY PREPARATION:Perpendicular to long axis of the tooth (initial access); Reposition bur parallel to long axis of tooth for drop-in | USE # 4 ROUND BUR FOR INITIAL ACCESS THROUGH THE ENAMEL THEN DENTIN |
| STEPS IN ACCESS CAVITY PREPARATION:Floor will give the canal orifices; Anteriors: lingual shoulder and enamel triangle are our concern to remove | When the bur “drops-in” unroof the pulp chamber |
| STEPS IN ACCESS CAVITY PREPARATION:finishing, | Refine the access preparation using tapering fissure bur, non-cutting end, by removing lingual cervical bulge, enamel triangle. |
| REFINE THE ACCESS PREPARATION: lingual shoulder | to gain straight line access |
| REFINE THE ACCESS PREPARATION:counterpart of lingual shoulder | Cervical bulge |
| REFINE THE ACCESS PREPARATION: ___ the incisal wall in enamel triangle | bevel |
| STEPS IN ACCESS CAVITY PREPARATION:EXPLORE THE ORIFICE USING ______ OR _______ | PATHFINDER; ENDODONTIC EXPLORER |
| IDEAL OUTLINE FORMS(MX):incisors | rounded triangular |
| IDEAL OUTLINE FORMS(MX):canine | ovoid |
| IDEAL OUTLINE FORMS(MX):1st pm | oval/slot-shaped |
| IDEAL OUTLINE FORMS(MX):2nd pm | oval |
| IDEAL OUTLINE FORMS(MX):1st and 2nd M | rounded triangular or rhomboid/trapezoidal |
| IDEAL OUTLINE FORMS(MN):ANTERIORS | rounded triangular |
| IDEAL OUTLINE FORMS(MN):PM | oval |
| IDEAL OUTLINE FORMS(MN):M | rhomboid/trapezoidal depending on the shape of pulp chamber and number of canal orifices |
| TRUE OR FALSE: DO NOT LOOK FOR CANAL ORIFICES | TRUE |
| at the end of _____is a canal orifice | dentinal map |
| Properly unroofed pulp chamber, lingual shelf, enamel triangle removed: For posteriors, also remove the _____ | cervical bulge |
| Properly unroofed pulp chamber, lingual shelf, enamel triangle removed: Remove the ______ to gain straight line access | lingual shelf and cervical bulge |
| Overextensions of cavity preparation; In cases when you disoriented your bur during acp | Ledging and gouging |
| To remove dentinal chips; If there are irregulaties in the pulp chamber, there are chips that will be lodged onto the apical region | refine access preparation |
| one of the key factors to the success of RCT. | Access cavity preparation |
| Many problems can be avoided with a _________ | good access cavity preparation |
