The efficacy of tactile detection of the apical constriction in flared and nonflared root canals was examined in 120 root canals of adult patients. In 68 nonflared (group 1) root canals, a #15 or #20 K-file was used to detect ("feel") the apical constriction. In 52 teeth (group 2), Hedstrom files, Gates Gliden drills #2 to #4, and ultrasonic files were used to enlarge the canal orifice and flar...

Congenital Strictures are usually the result of inadequate' union between the proctodoeal invagination and the hind-gut proper. Any degree of obstruction, from stenosis of the anal orifice up to complete atresia of the anal canal, may be present. Imperforate anus may be associated with absence of a portion or the whole of the rectum. Operations upon such cases early in life may be followed by m...

OBJECTIVES The objective of this work was to investigate the distribution of the innervation zones of the motor units that make up the external anal sphincter (EAS) in healthy males and females. METHODS A cylindrical probe carrying a circumferential array of 16 electrodes was used to detect the generation, propagation and extinction of individual motor unit action potentials (MUAPs) at 1, 2, ...

I. Anatomy TWo sphincters guard the anal canal, the external sphincter and the internal sphincter. The external sphincter.?The external .sphincter is composed of the subcutaneous part, the superficial part, and the profundus or the deep part. The subcutaneous part is composed of muscle fibres surrounding the anal orifice, and is intimately connected with the skin. It is supplied by perineal bra...

ABSTRACTIntroduction: Dental hard tissue problems were relatively high in Indonesia. If these ignored, they would cause pulpal necrosis. The main treatment for this case was Root Canal Treatment (RCT). selection of post-RCT and suitable materials important. One the examples short fiber reinforced composite (SFRC) which can be an option intracanal retention treatment. This study aims to analyze ...

Objective – to determine the effectiveness of root canal treatment while using different groups sealers based on a long-term result radiological examination.Materials and methods. An analysis data various types X-ray examination (computed tomography, digital orthopantomography, focused X-ray) teeth where had been done zinc-oxide-eugenol or resorcinol-formalin (active sealers), epoxy resins (pas...

PURPOSE Bladder cancer (BC) may involve the ureteral orifice, and the resection of the orifice has oncological and functional consequences such as development of upper tract urothelial carcinoma (UTUC), vesicoureteral reflux or ureteral stenosis. The aim of this study was to investigate the oncological and functional outcomes of the ureteral orifice resection in BC patients and determine the pr...

The Burkard 7-day spore trap with standard orifice is commonly used by researchers in sampling outdoor air. The alternate orifice is reported to have higher efficiency in collecting small airborne fungal spores; however, no previous studies compared Burkard samplers with different orifices. This study was conducted to study the effect of the alternate orifice on the concentration of airborne fu...

OBJECTIVE When performing transcanal myringoplasty under a microscope, the total circumference of the perforation can be difficult to confirm in patients where the external ear canal is narrow and/or protruded. In such patients, a retroauricular incision approach is usually used. However, we have developed a transcanal endoscopic myringoplasty procedure, and the microscopic and endoscopic views...

BACKGROUND The effective aortic regurgitant orifice area varies with aortic pressure in animal models of acute aortic regurgitation. The purpose of this study was to determine whether the aortic regurgitant orifice area changes during diastole in patients with chronic aortic regurgitation. METHODS AND RESULTS Two-dimensional and Doppler echocardiography were performed immediately before and a...