OBJECTIVE To compare the amount of anchorage loss of the maxillary posterior teeth and amount of retraction of the maxillary anterior teeth between en masse retraction and two-step retraction of the anterior teeth. MATERIALS AND METHODS The sample consisted of 30 female adult patients with Class I malocclusion and lip protrusion who needed maximum posterior anchorage. The sample was subdivide...

Plasters are produced from a light refractory material, mainly MgO (M.P. 2800ºC), a binder, and a void forming substance for insulating purposes. Different oxides from the slag penetrate into these voi...

Background The major treatment for thalassemia is a transfusion. The present study aimed to determine the frequency of erythrocyte alloantibodies and the relevant factors among the patients with thalassemia major in Kermanshah city, Iran. ...

  This study represents a highly efficient and regioselective ring-opening of epoxides with acetic anhydride in the presence of NaOAc<span style="font-size: 10.0pt; font-family: 'Times ...

Charge Transfer (CT) complexes formed between dibenzo-24-crown-8 (DB24C8) as an electron donor with the σ-electron acceptor iodine (I2) in chloroform, dichloromethane, and 1,2-dichloroethane solutions have been studied by different spectroscopic techniques at room temperature. The spectral studies of the complexes were det...

Endoscopic submucosal dissection (ESD) is now an approved technique for removal of superficial tumors in the upper and lower gastrointestinal tract. The European Society of Gastrointestinal Endoscopy (ESGE) recommends ESD as the first treatment for superficial SCC and for early gastric cancer [1]. In Barrett’s cancer, however, ESD’s role and indications are still debated by “pro” and “con” expe...