20155
document
Evaluation of apical sealing ability and adaptation to dentine of two resin-based sealers . The purpose of this study was to evaluate the apical sealing ability and adaptation to dentine of two resin-based root canal sealers . The root canals of 55 human maxillary anterior teeth were prepared using a step-back technique and the smear layer removed with 17 % ethylenediaminetetraacetic acid . The teeth were divided into two groups of 25 teeth and the remaining five teeth served as control . Then the teeth were prepared and obturated with gutta-percha by a lateral condensation and either AH plus and EndoRez used as a sealer . Twenty teeth from each group were used for the apical leakage test and the remaining five teeth from each group were used for examination under the scanning electron microscope ( SEM ) . For apical leakage test , teeth were covered with nail varnish and sticky wax to within 1 mm of the apical foramen and placed in 2 % methylene blue for 7 days . After this period , the teeth were sectioned longitudinally and apical leakage measurements made . The mean value of dye penetration for AH plus was 2.87 +/- 0.43 mm , while that of EndoRez was 4.54 +/- 0.36 mm . The difference between mean of dye penetration was statistically significant ( P < 0.01 ) . The SEM examination showed both sealers had better adaptation and penetration in coronal and middle thirds than apical third of root canal . In apical third , AH plus was adapted better adpated to dentine than EndoRez . In conclusion , AH plus sealer has better apical sealing ability and adaptation to dentine than EndoRez sealer .
20156
Intervention_Pharmacological
two resin-based sealers
20157
Intervention_Pharmacological
two resin-based root canal sealers
20158
Intervention_Physical
prepared and obturated with gutta-percha by a lateral condensation
20159
Intervention_Pharmacological
AH plus
20160
Intervention_Pharmacological
EndoRez
20161
Intervention_Other
teeth were covered with nail varnish and sticky wax to within 1 mm of the apical foramen and placed in 2 % methylene blue for 7 days
20162
Intervention_Physical
the teeth were sectioned longitudinally
20163
Intervention_Pharmacological
AH plus
20164
Intervention_Pharmacological
EndoRez
20165
Intervention_Pharmacological
AH plus
20166
Intervention_Pharmacological
EndoRez
20167
Intervention_Pharmacological
AH plus sealer
20168
Intervention_Pharmacological
EndoRez sealer .
20169
Outcome_Other
dye penetration for AH plus
20170
Outcome_Other
dye penetration
20171
Outcome_Physical
adaptation and penetration in coronal and middle thirds
20172
Outcome_Physical
better apical sealing ability
20173
Participant_Condition
root canals
20174
Participant_Sample-size
55