TY  - BOOK
AU  - Qais Mohammad Hamed Zaytoun
AU  - Badawy Abuelmahasen , 
AU  - Jaylan Fouad Elguindy , 
TI  - Efficacy of Ultrasonic Instrumentation with different application periods on pull out of two types of post and core systems / 
PY  - 2012///
CY  - Cairo : 
PB  - Qais Mohammad Hamed Zaytoun , 
KW  - Cementation
KW  - Post removal
KW  - Ultrasonic
N1  - Thesis (M.Sc.) - Cairo University - Faculty of Oral and Dental Medicine - Department of Prosthodontics; Issued also as CD
N2  - Objective: The aim of the present study was to evaluate the efficacy of ultrasonic  instrumentation with different application periods on pull out of two types of post and  core systems. Material and method: Sixty human maxillary central incisors single  rooted teeth were selected. For each tooth the crown was removed by horizontal  sectioning, perpendicular to the long axis 2 mm above the labial CEJ, canal were  endodontically treated, and the roots were embedded in acrylic resin blocks. The post  holes were prepared and root canal impressions were taken with wax
UR  - http://172.23.153.220/th.pdf
ER  -