Search results for "Fissure"
showing 10 items of 77 documents
From fracture to damage mechanics: a behavior law for microcracked composites using the concept of crack opening mode
2010
International audience; Many studies have been carried out in order to build a coherent macroscopic behavior law for a composite containing microcracks. All of them are only partially coherent and none of them is complete. This study proposes a hyperelastic behavior law for a microcracked composite, respecting all the conditions associated with the damage activation/deactivation, stress/strain relation continuity, induced anisotropy and the Clausius–Duhem inequality. This approach is based on the definition of the Crack Opening Mode for Damage Mechanics as it exists in Fracture Mechanics.
Lip and oral lesions in children with Down syndrome. A controlled study
2015
Background: Down syndrome (DS) is the most common chromosomal abnormality affecting numerous organs, including the orofacial region. The objective of the present study was to assess the prevalence of lip and oral soft tissue lesions, with particular emphasize on the incidence of fissured tongue, lip fissures and angular cheilitis, among individuals with DS in Yemen. Material and Methods: This controlled cross-sectional study included 50 children with DS (6-18 years), and 50 age- and gender-matched healthy controls. The prevalence of orofacial soft tissue lesions was evaluated in both groups. Data were analyzed by Chi-square and Fisher tests, and p <0.05 was considered to be statistically si…
Safety and effectiveness of saving sphincter procedure in the treatment of chronic anal fissure in female patients.
2021
Abstract Introduction Lateral internal sphincterotomy (LIS) is still the approach of choice for the treatment of chronic anal fissure (CAF) regardless to the internal anal sphincter tone but it is burdened by high risk post-operative faecal incontinence (FI). In female patient there are some anatomical and functional differences of the sphinteric system which make them more at risk of FI and vaginal birth could cause sphinteric lesions affecting the anal continence function. The aim of our study is to evaluate the results of saving sphincter procedure as treatment for female patients affected by CAF. Methods We studied 110 female patients affected by CAF undergone fissurectomy and anoplasty…
Bifunctional dentifrice: Amorphous polyphosphate a regeneratively active sealant with potent anti- Streptococcus mutans activity
2017
Abstract Objective In this study we demonstrate that inorganic polyphosphate (polyP) exhibits a dual protective effect on teeth: it elicits a strong antibacterial effect against the cariogenic bacterium Streptococcus mutans and, in form of amorphous calcium polyP microparticles (size of 100–400 nm), it efficiently reseals cracks/fissures in the tooth enamel and dentin. Methods Three different formulations of amorphous polyP microparticles (Ca-polyP, Zn-polyP and Sr-polyP) were prepared. Results Among the different polyP microparticles tested, the Ca-polyP microparticles, as a component of a newly developed formulation of a dentifrice, turned out to be most effective in inhibiting growth of …
Ophthalmologic complications after intraoral local anesthesia with articaine.
2000
A series of 14 cases of ophthalmologic complications after intraoral anesthesia of the posterior superior alveolar nerve is presented. The most commonly encountered symptoms were diplopia, mydriasis, palpebral ptosis, and abduction difficulties of the affected eye. In all cases, these effects occurred a few minutes after injection of the anesthetic, followed by complete resolution without sequelae on cessation of the anesthetic effect. The pathogenic mechanism underlying such ophthalmologic disorders is discussed in terms of a possible diffusion of the anesthetic solution toward the orbital region.
Tongue lesions in a Jordanian population. Prevalence, symptoms, subject's knowledge and treatment provided.
2010
Tongue lesions constitute a considerable proportion of oral mucosal lesions, and are health concern to both oral health care providers and public. Objectives: The aim of this study was to determine the prevalence of tongue lesions and conditions among a group of Jordanian population attending dental clinics, in addition to assessment of their symptoms, knowledge, and treatment provided for their tongue lesions. Study design: A total of 2000 dental out-patients were screened for tongue lesions. Results: Fissured tongue was the most common tongue lesion diagnosed in 11.5% of the subjects, followed by coated tongue (8.2%), geographic tongue (4.8%), hairy tongue (2.4%) and median rhomboid gloss…
Lateral internal sphincterotomy is still crucial to heal hypertonic chronic anal fissure and normalize the internal anal sphincter tone? Is V-en Y pl…
2021
INTRODUCTION: The role of augmented internal anal sphincter (IAS) tone in the genesis of chronic anal fissure (CAF) is still unclear. Lateral internal sphincterotomy (LIS) is the most employed surgical procedure, aiming to reduce the IAS tone leaving a permanent anatomical alteration and it is burdened by high risk post-operative anal incontinence (AI). The aim of this work was to evaluate if the pre-operative manometric alterations of CAFs with hypertonic IAS would normalize after sphincter preserving surgical procedure. METHODS: We enrolled 108 consecutive patients affected by idiopathic and non-recurrent CAF undergone fissurectomy and anoplasty with V-Y cutaneous flap advancement and pha…
Syndrome de la fissure orbitaire supérieure post-traumatique : mise au point
2016
The traumatic superior orbital fissure syndrome is an uncommon complication of craniomaxillofacial trauma. The diagnosis is clinical and associates ophtalmoplegia (constantly at initial clinical examination), ptosis and anaesthesia of the forehead. Young men victim of road traffic accidents are most often affected. CT-scan usually shows facial and/or craniofacial fractures more or less spreading towards the superior orbital fissure. The absence of fracture seen at the X-rays does not eliminate the diagnosis. Initial management should be multidisciplinary (maxillofacial surgeons, ophthalmologists and neurosurgeons) and conducted early if possible. It combines high-dose corticosteroids and de…
Kohlschütter-Tönz Syndrome: report of an additional case
2013
Kohlschütter-Tönz Syndrome is a rare disorder clinically characterized by amelogenesis imperfecta, epilepsy and progressive mental deterioration. We present an additional case of this syndrome of a nine year-old boy who was referred by pigmented teeth. The mental deterioration was associated with speech delay, impulsive behavior, attention-deficit/hyperactivity disorder, and learning problems. The physical examination revealed a reduction of lower third, slightly palpebral fissures, low ear and hair implantation, coarse hair and hypertrichosis. The intraoral examination showed alteration in teeth pigmentation diagnosed as amelogenesis imperfecta. Although rare, the present case report illus…
Comparative evaluation of sealing ability, penetration and adaptation of a self etching pit and fissure sealant- stereomicroscopic and scanning elect…
2019
Background The efficacy of pit and fissure sealants in preventing occlusal caries is a well-established fact. Considering the difficulty in achieving strict isolation for a longer duration while treating the pediatric patients, a simplified procedure of sealant application is desirable. While, a self-etching sealant, Prevent Seal offers a quick procedure, the physical properties of this material haven’t been studied yet. Thus, this study was aimed to comparatively evaluate sealing ability, penetration and adaptation of a self-etching pit and fissure sealant and a conventional resin sealant. Material and Methods This was an in vitrointergroup comparative study, which consisted of 2 groups- G…