The operating quality of reclamation drainage and irrigation systems depends on the condition their main elements. elements are canals with various profiles, ranging from rectangular to parabolic. most widespread in land a trapezoidal profile. At same time, it is possible note that natural production characteristics quite diverse, this issue especially relevant for geometric parameters canals. ...

Background: Fetal anatomy is now becoming popular with advancement in fetal surgery in-utero. The knowledge regarding the embryonic development of vertebral canal plays an important role in diagnosis of congenital anomalies as well as fetal surgeries of the vertebral canal. Methods: Sixty fetuses which were preserved in 10% formalin were divided into five groups according to the gestational age...

BACKGROUND AND OBJECTIVES Smear layer removal with EDTA from root canal walls allows greater cleaning and disinfection of root canals. However, because Er:YAG laser acts on the removal of the smear layer, the objective of investigation was to analyze in vitro the effect of Er:YAG laser on dentin root canal wall permeability after endodontic instrumentation and irrigation with water or sodium hy...

OBJECTIVE To characterize the physiologic nature of the vestibular dysfunction that occurs with the normative aging process. STUDY DESIGN Cross-sectional study. SETTING Tertiary care academic medical center. PATIENTS Fifty individuals age 70 years and above. INTERVENTIONS Head thrust dynamic visual acuity testing and cervical and ocular vestibular-evoked myogenic potential (VEMP) testin...

Background: Cervical spondylosis is a degenerative process involving changes in soft tissue and bone of intervertebral discs. Objective: To evaluate wrestling induced cervical spondylosis. Methods: 83 male wrestlers with the age range of 15 to 55 were randomly studied against 79 non-wrestlers of the same age. Clinical and radiological assessments were carried out and recorded in both groups. Wr...

Two cases of delayed progressive paralysis of the upper limbs in an adult and a teenage patient, without neurological deficits in other regions of the body, are presented. In both cases, the pathology appeared to be a traction lesion of the middle cervical and lower cervical nerve roots, due to abnormal angulation of the nerve roots, which first ran up and then downward in the neural foramina a...

OBJECTIVE To determine the stiffness of the pregnant uterine cervix in vivo. METHOD Five women in early pregnancy and six women in late pregnancy were included. The EndoFlip is a 1-m-long probe with a 12-cm-long bag mounted on the tip. The tip of the probe was inserted into the cervical canal. Sensors spaced at 0.5-cm intervals along the probe were used to determine 16 serial cross-sectional ...

Relaxin and estrogen reduced the resistance to dilatation of the mouse cervical canal. Relaxin was stored in, and secreted from , the ovaries of pregnant mice. The corpus luteum of gravid women just at delivery contained 25-50 GPU/g of relaxin, while the placenta, amniotic fluid and serum had no relaxin activity. Luteinizing hormone, luteotropic hormone and oxytocin effected elongation of the i...

We describe 2 brothers with L-2-hydroxyglutaric aciduria who developed severe spastic tetraparesis in their 30s. They also had an underlying condition of high-grade cervical spinal canal stenosis diagnosed by magnetic resonance imaging. They were operated on to decompress the spine, and the preexisting gait disturbances slowly diminished after the decompression. Since most people with L-2-hydro...

This paper describes and discusses the use of the Nd:YAG and diode lasers in endodontics. Clinical studies clearly show advantages of laser treatments over currently-used conventional methods and techniques. The most important advantages are improved disinfection efficacy, more effective root canal cleaning, reduction of permeability, reduction of micro-leakage, and elimination of the need to u...