objective: the present study assessed the association of size, axial angulation, developmental stage and bud position of the mandibular third molar with the second molar impaction in patients with mandibular second molar impaction. methods: in this descriptive-analytical study (case-control design), dental records of 5,420 patients in the age range of 12-15 years who underwent orthodontic treat...

The densities of 12 melts in the Na20-FeO-FezOrSi02 system have been determined in equilibrium with air, in the temperature range of lOOO15OO”C, using the double bob, Archimedean technique. Ferrous iron determinations of 100-200 mg samples, “dip” quenched from high temperature, indicate that all the melts investigated were highly oxidixed under these experimental conditions. “Fe Massbatter spec...

background and aims. impacted lower third molar is found in 90% of the general population. impacted lower third molar surgery may result in periodontal complications on the distal surface of the adjacent second molar. the aim of this study was to evaluate the effect of flap design on the periodontal status of the second molar after lower third molar surgery. materials and methods. twenty patien...

Optically transparent thin films with thermochromic properties have been fabricated by means of cointercalation of different molar ratios of 4-(4-anilinophenylazo)benzenesulfonate (AO5) and sodium dodecylbenzene sulfonate (SDS) into the galleries of a ZnAl layered double hydroxide (LDH). The X-ray diffraction (XRD) patterns of these thin films show that they are assembled in a highly c-oriented...

In this study electrocoagulation (EC) process with sacrificial aluminum anode was used to separate crude oil from synthetic oily wastewater emulsion. A preliminary experimental study was performed to evaluate the most accurate operating parameters, which are then used for the determination of crude oil removal efficiency. The experimental results indicated that electrocoagulation was very e...