| True | False |
| Calcium hydroxide has neutral pH |
| pH of calcium hydroxide is high (alkaline) |
| Calcium hydroxide is antibacterial |
| Calcium hydroxide can stop external inflammatory root resorption |
| Calcium hydroxide can stimulate formation of apical barrier in necrotic teeth with open apex |
| Endodontic materials are not allowed to contain pharmacologically active substances |
| Endodontic materials are not allowed to contain biologically active substances |
| Sealers may contain antibacterial substances |
| Apexit and CRCS are among the calcium hydroxide containing sealers |
| Eugenol is not antibacterial |
| Eugenol has analgesic effect |
| Sealers are not allowed to contain iodide compounds |
| All endodontic materials are nonresorbable |
| Endodontic sealers must be resorbable |
| Macrophage is the dominant resorbing cell in the tissues |
| To be allowed for use in humans, endodontic materials must be completely non-cytotoxic |
| If present, the cytotoxic effect from materials extends a longer distance into tissue than an antibacterial effect |
| Endodontic materials may cause an allergic reaction |
| Discoloration of a tooth is always a result of necrosis, not from an endodontic material |
| Sodium hypochlorite, if pressed into the periapical area causes only no or mild pain |
| Extrusion of endodontic material into the mandibular nerve canal may cause paresthesia |
| Follow-up studies are providing information about the performance of endodontic materials |
| Controlled clinical comparisons must use subjective, but not objective methods for assessing the results |
| Formaldehyde may cause toxic but not allergic reactions |
| Eugenol may be allergenic for some patients |
| The response in "Guinea-pig maximization test" is considered to be associated with the ability to cause allergy in humans |
| Only materials which have proven to prevent coronal leakage are used in endodontics |
| Coronal leakage is not connected to endodontic failure |
| Root filling material should be able to prevent growth of possible residual bacteria in the canal system after filling |
| Root filling materials contain potentially antibacterial substances |
| Level of radiopacity of root filling material may effect interpretation of the quality of the filling from the radiograph |
| Gutta percha master cones are usually manufactured with a known, constant taper |
| Accessory GP cones may have "non-standardized" taper |
| Gutta percha is the main components of gutta percha points |
| Zinc oxide is found in trace amount in most gutta percha points |
| Pure alcohol is the most effective solvent for GP points |
| Heat can soften gutta percha |
| Chloroform can soften gutta percha |
| Gutta percha alone (without sealer) can give a bacteria tight seal |
| Resilon is a thermoplastic synthetic polymer for root filling |
| Resilon contains barium sulphate to increase its antibacterial properties |
| Resilon can be used with cold lateral condensation |
| Resilon can be used with warm gutta percha techniques |
| Resilon is recommended to be used with normal sealers |
| The benefit of silver points is resistance to corrosion |
| Silver points and other metal points represents the new trend in root canal filling |
| Diaket is a polymer based sealer |
| Grossman's sealer is one of several ZnO-eugenol based sealers |
| ZnO-eugenol based sealers do not have antibacterial activity |
| AH26 and AH+ are silicone based sealers |
| Sealapex and Apexit are salicylate resin sealers |
| Sealapex and Apexit both contain calcium oxide |
| CRCS sealer contains calcium hydroxide and ZnO |