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Biomedical subjects

Y Gilon

Publications and source records attributed to Y Gilon.

11 recordsLinked to original sources
PubMed2002

[Systemic infections of dental origin].

Microorganisms harbored in the oral cavity have long been recognized to cause systemic disease with a well known mechanism of spread via the blood stream. Different factors, including the presence of periodontal disease, the number of dental extractions or the duration of dental surgery have an influence on the risk of bacteremia. Infectious endocarditis is classically cited, but there are other potential problems including brain abscess, meningitis, lung or lie abscess, and even for some authors, a risk of thrombotic heart disease. It is important to keep in mind that some of these focal infections may be possible complications of dental (or buccal) infection. Prevention is crucial.

Bacteremia↗
PubMed2002

[Myxoma of the mandible. A case report].

Maxillo-mandibular myxomas are rare lesions and their pathogeny remains unclear. The poor clinical picture and the absence of pain makes the diagnosis difficult. Because of the long lasting course, the tumor is usually large at the time of diagnosis. Although this tumor is benign, the local aggression and the high rate of recurrence dictate a radical treatment.

Adult↗
PubMed2002

[Vascular complications after cranio-facial trauma].

Despite recent advances in automobile safety, facial trauma remains a common event. Cranio-facial trauma, which usually occurs within a context of multiple trauma, can, in some patients, lead to serious life-threatening vascular complications. Such injury usually involves the carotid system (hemorrhage, aneurysm, dissection). Management of these vascular injuries must be given the same priority as other multiple trauma injuries. We present few typical cases illustrating carotid-cavernous or vertebro-vertebral fistulae, false aneurysms, arterial dissections or oro-facial bleeding. Bleeding is generally controlled by ligation or compression, other lesions being diagnosed secondarily by arteriography depending on the particular clinical situation. Treatment may involve endovascular procedures to achieve intravascular embolism or vascular occlusion.

Accidents, Traffic↗
PubMed2002

[Cephalometric assessment in obstructive sleep apnea and hypopnea syndrome].

Several cephalometric studies have been published to study sleep apnea and hypopnea. The purpose of this review is to provide a clear analysis of the different and apparently contradictory cephalometric results and to describe certain pitfalls of the method. In general, an excessive development of the tongue and soft palate are observed in these subjects, limiting the pharyngeal airway. Bony anomalies include mandibular retrognathism and an excessive anterior ventral development of the skull associated with insufficient anterior growth of the base of the skull. The head is held in extension. These different factors contribute to blocking the upper airway and favor pharyngeal collapse. Cephalometry can be used to identify patients at risk and to propose an apnea/hypopnea index for precise etiological diagnosis and therapeutic decision making.

Cephalometry↗
PubMed2002

[Our experience with geniopexy in the treatment of OSAS].

OBJECTIVE: We examine geniopexy efficacy in OSAS treatment. STUDY DESIGN: Seven patients, aged 36 to 61 years, were studied. The mean body mass index was normal. RESULTS: Surgical late complications (modified symphysis proprioception) occurred in 4 patients. No patient was improved in sleep problems. Retromaxilly and retromandibuly were found in all patients by cephalometric study. DISCUSSION: Our results are quite different from these described successfully by other centers. Geniopexy do not move maxillar and mandibular skeletal bones, which are retruded in our serie. This explains maybe our bad results. Actually, we propose for this patients maxillo-mandibular advancement.

Adult↗
PubMed2001

[Management of hemangiomas and vascular malformations].

Vascular anomalies can be classified as hemangiomas or vascular malformations. Hemangiomas are benign neoplasms, frequently diagnosed in infancy. The vast majority of these anomalies are totally harmless and spontaneously regress, although they often worry the parents because of esthetic reasons. Only a few (1/4), however, are endangering and will require therapy. Vascular malformations are rather vessel abnormalities which, unlike hemangiomas, persist. They require a thorough evaluation and most will benefit from an intervention. The recent development of informative imaging techniques (ultrasonography, Dopplerflow imaging and magnetic resonance) has permitted significant advances in the etiology and therapy of these vascular anomalies. All too often, these patients shuffle from physician-to-physician seeking help. Thus the authors recommend a multidisciplinary approach. This team should include a plastic surgeon, a radiologist and a paediatrician.

Arteriovenous Malformations↗
PubMed2001

Surgical management of maxillomandibular advancement in sleep apnea patients: specific technical considerations.

Maxillomandibular advancement is an integral part of the surgical treatment of patients suffering from obstructive sleep apnea. A number of publications report its efficacy and have attempted to define predictive success criteria. However, few authors have shown an interest in the surgical specificity of this intervention and in the difficulties that can be encountered, which differ from those seen in conventional orthognathic surgery. In this article, a series of patients treated with maxillomandibular osteotomy to correct obstructive sleep apnea syndrome (n = 17) are compared with patients who underwent surgery for the correction of dentofacial disharmonies (n = 33). Observations emphasized the importance of respecting a strict surgical and postsurgical protocol to avoid any technical traps linked to maxillomandibular advancement, both in preoperative simulations and during and after surgery. Results concerning sleep parameters will be the subject of a future publication.

Adolescent↗
PubMed2000

[Indications and implications of surgical maxillary expansion in orthodontic surgery].

Surgically assisted rapid maxillary expansion is an accepted method for correction of transverse skeletal and dental discrepancies. The surgical technique includes a Lefort I osteotomy with medial palatine osteotomy. The maxillary must be totally released to achieve the desired expansion. There are several advantages: bone apposition in osteotomy sites, reduced risk of dental version or extrusion compared with orthopedic care, secondary surgical cure of complex dysmorphism requiring fewer segmentary osteotomies. Finally, we examined skeletal side effects induced by surgically assisted rapid maxillary expansion in the vertical and sagittal dimension of the face.

Adult↗
PubMed1992

[Taking fluoride during pregnancy: what are the benefits for the infant?].

The dental carie is one of the most frequent chronic disease in humans. The causes are well known actually, so preventive actions against dental caries have been carried out. Administration of fluoride is one of these preventive actions. It is difficult to estimate the interest of fluoride supplementation during pregnancy for the newborns: was the transplacental passage of fluoride demonstrated, and if it was, which advantage for a fetus without complete mineralisation of the teeth? Dental embryology, physiopathology of dental caries, action, metabolism and toxicity of fluoride are successively studied, so it will be easier to estimate the utility and the benefits of fluoride supplementation in pregnant women.

Child↗