TY - JOUR AU - Al-Azzawi, Dr. Abdul Karim Jassim PY - 2018/04/16 Y2 - 2024/03/28 TI - The possible numbers of repair can be Carried on the same light-cured Composite resin surface (In vitro study) JF - Mustansiria Dental Journal JA - MDJ VL - 3 IS - 2 SE - articles DO - 10.32828/mdj.v3i2.627 UR - https://mdj.uomustansiriyah.edu.iq/index.php/mdj/article/view/627 SP - 131-136 AB - <p>This study was done to determine the possible number of repair that can be carried<br>out on the same light-cured microfilled composite resin (Helioprogress, vivadent,<br>Germany). 40 specimens were prepared, stored in deionized distilled water at 37°C<br>for 24 hours and divided into 4 groups.<br>Group 1: The repair procedure done once.<br>Group 2: The repair procedure done twice.<br>Group 3: The repair procedure done for three times.<br>Group 4: The repair procedure done for four times.<br>All the specimens stored in deionized distilled water at 37°C for 24 hours before<br>testing. A universal zwick testing machine with a special designed chisel was used to<br>evaluate the shear bond strength of the repaired composite resin. The results showed<br>reduction in mean shear bond strength value from group 1 to group 4, furthermore a<br>significant difference was found between group 1 Vs group 3 and group 1 Vs group 4.</p> ER -