introduction: hydrogen fluoride is one of the materials which is widely used in making glass, cleaning  silicon, manufacturing florescent lamps, ceramics and also in separating uranium isotopes. on the other hand, exposure to this substance could cause health problems including eye, nose, throat and mucus membranes irritation. this study examines the relationship between fluoride (f) in the uri...

AIM To compare electromyographic (EMG) activity in young-adult subjects with different breathing types. METHODOLOGY This study included 50 healthy male subjects with complete natural dentition, and no history of orofacial pain or craniomandibular-cervical-spinal disorders. Subjects were classified into two groups: upper costal breathing type, and costo-diaphragmatic breathing. Bipolar surface...

Although there is an association between nasal obstruction, oral breathing and obstructive sleep apnoea syndrome (OSAS), it remains unknown whether increased oral breathing occurs in patients with OSAS who are free of nasal obstruction. The present study evaluated the relationship between breathing route and OSAS in patients without nasal obstruction. The breathing route of 41 snorers (25 male;...

background: respiratory function in patients undergoing open heart surgery is disrupted after surgery.  patient education on managing complications can reduce occurrence or severity of them. a variety of educational tools has been introduced, but there are controversies about the most appropriate tools. aim: determine the effect of instructional videos on respiratory function of the patients af...

Altered breathing pattern is an aspect of dysfunctional breathing but few standardised techniques exist to evaluate it. This study investigates a technique for evaluating and quantifying breathing pattern, called the Manual Assessment of Respiratory Motion (MARM) and compares it to measures performed with Respiratory Induction Plethysmography (RIP). About 12 subjects altered their breathing and...

BACKGROUND Burn is the worst tragedy among modern societies that individuals may experience. One of the most important problems of burns is pain; particularly at the time of treatment including burn dressings, debridement, surgical incisions and physiotherapy. The aim of this study was to determine the effect of rhythmic breathing on pain of dressing change in patients with burns. METHODS Th...

Background: The purpose of the present study was to assess the efficacy of non-pharmacological interventions on the anxiety among thalassemic children undergoing venipuncture. Patients and Methods: This was a clinical trial on 60 thalassemic children aged 6-12 years undergoing venipuncture. Children were randomly divided into three groups: control, bubble making and regular breathing exercise....

Most clinicians agree that impaired nasal breathing results in obligatory mouth breathing. Some believe that mouth breathing influences dentofacial growth; others disagree. The term mouth breathing is confusing because total mouth breathing rarely occurs. A combination of nasal and oral breathing is more usual. The purpose of the present study involving 116 adult subjects was to (1) assess the ...

INTRODUCTION The purposes of this study were to investigate the dental arch changes after adenotonsillectomies in prepubertal children and to compare the dental arch dimensions of mouth-breathing and nasal-breathing children. METHODS The sample included 49 prepubertal severely obstructed mouth-breathing children and 46 prepubertal nasal-breathing children. Twenty-four of the 49 mouth-breathin...

BACKGROUND Current guidelines for cardiopulmonary resuscitation (CPR) emphasise that emergency medical service (EMS) dispatchers should identify sudden cardiac arrest (CA) with abnormal breathing and assist lay rescuers performing CPR. However, lay rescuers description of abnormal breathing may be inconsistent, and it is unclear how EMS dispatchers provide instruction for CPR based on the breat...