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Biomedical subjects

L Chikhani

Publications and source records attributed to L Chikhani.

At least 19 recordsLinked to original sources
PubMed2006

[Sequelae of dental trauma: forensic medical aspects].

Dental trauma is a frequent condition which may occur alone or in combination with craniofacial trauma and/or other injuries. Many factors influence the gravity of the trauma and subsequent prognosis including age, anterior state, trauma etiology, treatment and follow up. In order to establish a prudent provisional or definitive expertise, the medical expert must have a panoramic view of the trauma. Time should be taken to consolidate facts and estimate prejudices on sound evidence. In certain cases outcome can be predicted. The medical expert should provide advice and counselling both for the patient and the mandating authority. In this article, iatrogenic dental accidents occurring during anesthesia or extraction will not be discussed.

Adult↗
PubMed2003

[Bruxism, temporo-mandibular dysfunction and botulinum toxin].

Tooth grinding and tooth clenching are unvoluntary mainly nocturnal habits that result in an hypertrophy of masseter and temporalis muscles with an unbalance between opening and closing muscles of the jaw and lead to an alteration of mandibular condyles movements and to hyper pressure in the temporo-mandibular joints (TMJ) which can generate severe pain. Intra muscular injections of botulinum toxin permit to restablish the balance between closing and opening muscles, to relieve pain, to treat masseteric hypertrophy with improvement of face outline and to recover a normal cinetic of temporo-mandibular joints. Moreover, botulinum toxin injections permit to quit habits of tooth grinding and clenching and one single session of injections is curative for 2/3 of the patients. There are no side effects apart from slight diffusion to superficial muscles of the face resulting in a "fixed" smile for about 6 to 8 weeks. So injections of botulinum toxin in masseter and temporalis muscles are an efficient treatment of bruxism and TMJ dysfunction, cheap with no lasting side effect.

Anti-Dyskinesia Agents↗
PubMed2002

[Diffuse sclerosing osteomyelitis of the mandible and SAPHO syndrome].

BACKGROUND: Diffuse sclerosing osteomyelitis of the mandible (DSOM) and SAPHO (synovitis, acne, palmo-plantar pustulosis and psoriasis, hyperosteosis, osteitis) syndrome are not commonly associated. SAPHO has not been described to date in the stomatology and maxillo-facial surgery literature in French. Were report here a homogeneous series of 12 patients with DSOM. MATERIAL AND METHODS: All patients had mandibular osteitis. RESULTS: Five patients with multifocal osteitis wre considered to present SAPHO syndrome because of the associated skin lesions. One patient with a unique focus of mandibular osteitis and palmo-plantar pustulosis probably had early-stage SAPHO syndrome. The diagnosis in the other cases was diffuse sclerosis osteitis of the mandible. DISCUSSION: We compared our series with those reported in the literature, emphasizing diagnostic and therapeutic difficulties. Diffuse sclerosing osteomyelitis of the mandible should be distinguished from microbial osteitis. Early diagnosis is required to avoid successive and unnecessary dental avulsions. There is a possible link between DSOM and SAPHO and all patients should have a complete work-up including whole-body scintigraphy to search for other foci. A biopsy is indicated to rule out malignancy. Nonsteroidal antiinflammatory drugs can improve patient comfort in this particularly long syndrome. Although the efficacy is demonstrated, surgery and antibiotics can only delay relapse for a few months.

Acquired Hyperostosis Syndrome↗
PubMed1999

[Osteosynthesis of subcondylar fractures using compression screws with the Eckelt technic. Experiences and difficulties with the technic over 5 years].

With creation of new fixation material, the surgical treatment of displaced subcondylar fractures is most frequently used in adults. The Eckelt compression osteosynthesis is described as an easy procedure in the current literature, but, in our experience, several problems require our attention. We report the treatment of 57 patients with displaced subcondylar fractures where compression osteosynthesis was indicated. The difficulty of this technique is presented on the basis of a 5-years experience.

Adult↗
PubMed1999

[Post-traumatic enophthalmos. Physiopathologic considerations and current therapeutics].

The article is an overview of the available literature on post-traumatic enophthalmos (PTE). The PTE has a clinical definition and its diagnosis is based on a clinical examination. Fully assessment of the deformity requires complete ophthalmological examination and a measurement of the globe backward displacement by the mean of Hertel's ophthalmometer. Focusing on the pathophysiology, we insist on the role of periorbit and extraocular muscle retraction; nevertheless, according to most of the author's, opinion, the main pattern of the PTE seems to be the increased orbital post-traumatic volume, as it can be demonstrated by computed tomography (CT scan). In fact, thorough evaluation of the deformity needs at less a CT scan examination, providing horizontal and coronal slices. Sometimes, even a three-dimensional reconstruction can be obtained, helping the surgeon assessing the orbital deformity pre-operatively. We present five patients victims of a high-energy facial injury (motor vehicular accidents is responsible for an overwhelming majority of cases) leading to severe orbital lesions, and presenting a PTE as the main sequelae. We use homologous bone grafts to repair orbital fractures, especially calvarial bone. Osteotomy of the zygomatic bone (total or partial) can be proposed, combined with grafting of the orbit, to improve the correction of PTE. Most of all, patients with acute orbital trauma must be operated on as quick as possible: the sooner the surgery, the lower the probability for the PTE to occur.

Bone Transplantation↗
PubMed1998

Myositis ossificans progressiva: five generations where the disease was exclusively limited to the maxillofacial region. A case report.

Myositis ossificans progressiva is an unusual autosomal-dominant inherited disease characterized by congenital malformations and osseous metaplasia of the fascia of the muscles and connective tissue leading to ossification of the relevant area. The case report is remarkable in that eight members of the same family over five generations manifested the exclusive localization of the disease in the maxillofacial region.

Adult↗
PubMed1998

[A large mucocele of unusual location].

We present the case of a patient who presented an unusually large mucoid cyst measuring 38 x 25 mm in an uncommon localization, the right maxillary. We examine the topographic and histological characteristics of mucoceles together with their treatment. The main differential diagnoses of liquid tumoral formations of the maxillary are also discussed.

Bone Cysts↗
PubMed1998

[Parietal grafts in maxillofacial and pre-implant surgery].

Due to the recent regulations generated by the diversity of infectious risks, autologous bone is the standard graft material in maxillofacial surgery. Although synthetic biomaterials can be useful, they remain insufficient in many situations. Among the many sites offering graft material, monocortical parietal bone which is accessible within the craniocephalic operative field has distinguishing characteristics due to its membranous embryological origin and its mode of direct ossification which does not include a cartilaginous stage. The proportion of cancellous bone per unit volume is much higher than in enchondral bone (iliac bone, ribs...). These factors are undoubtedly the source of its main qualities--very little resorption and excellent capacity for bony integration--motivating its increasingly widespread use over the past twenty years. We present our experience in a series of patients who underwent surgery between 1992 and 1997. Parietal bone was used for orthognathic, pre-implant or reconstruction surgery after trauma or carcinological trauma. We present a description of the surgical procedures together with morbidity results and compare our findings with those found in large series in the literature, particularly concerning rare neuromeningeal complications. We discuss indications for parietal grafts and their course at the receiver site.

Adolescent↗
PubMed1997

[Continuous elastic skin expansion for closure of the loss of substance of the scalp].

The authors present a case report of a traumatic defect of the scalp involving all layers including galea and periost measuring 10 x 14 cm. The surgical repair of the scalp avulsion was obtained in 3 weeks using Continuous Skin Extension procedure with Kirschner pins threaded through the wound margins, held together with elastic bands. Traction forces were modified twice a week in our patient basis. No undermining was necessary. The authors analyse the benefits of this technic and describe the alternative surgical procedure. This technique is easy to handle, cheap, safe, and requires a single surgical step. Furthermore, it quickly allows the patient to proceed with his work.

Bone Nails↗
PubMed1997

[Diffuse cervical cellulitis apropos of 15 cases].

A homogeneous series of 15 cases of diffuse cervical cellulitis originating in the oropharyngeal area were collected from December 1990 to April 1995. Despite early management, diffusion of the infectious processus was rapid with extension and development of severe mediastinal or pulmonary complications. When diffuse cervical cellulitis is suspected, early and adapted aggressive treatment must be initiated immediately: suppression of the causal factor, surgical exploration with repeated drainage depending on the clinical course assessed on CT scans, antibiotics effective against the aero-anaerobic flora. This aggressive attitude is required to avoid potentially severe morbidity. Anti-inflammatory drugs, taken alone or with unadapted antibiotics was implicated in 11 cases as a favoring factor.

Adult↗
PubMed1995

[Fracture of the medial wall of the orbit. Apropos of 4 cases].

Fractures or the medial wall of the orbit are uncommon and clinical signs are often discreet. This report was focused on isolated fractures of the medial wall of the orbit. Blow-out trauma is usually the cause. In these cases the clinical signs ranged from simple ecchymosis to blindness by haematoma of the orbital cone. Computed tomography is a major tool for diagnosis and making therapeutic indications for these fractures. Treatment depends on the oculomotor involvements as measured by forced duction tests.

Blindness↗
PubMed1995

[Orbital paraganglioma. Apropos of a case and review of the literature].

Paragangliomas are exceptional in the orbit. Among the 47 cases reported in the world literature more than 1/3 has been classified as alveolar soft part sarcoma. Diagnosis of paraganglioma was confirmed on the basis of pathology reports in only 10. We observed a case in a 46-year-old woman who presented with a tumour of the orbit. The histology examination and the ultrastructure determined by electron microscopy confirmed the diagnosis of paraganglioma. Characteristic histologic features are discussed together with a review of the literature.

Chromogranins↗
PubMed1995

[Uncommon fungal maxillary sinusitis of dental origin due to Scedosporium prolificans].

This is the first case report of an exceptional maxillary infection due to Scedosporium prolificans. This recently discovered fungus was identified in the sinus. In the literature, it has been observed at different locations. Identification requires careful sample taking for mycology and pathology studies emphasizing the importance in maxillary surgery. This pathogenic fungus is very invasive, particularly in immunodepressed or immunocompromised patients. Therapeutic modalities vary with the patient's immune status.

Adult↗
PubMed1995

[Malignant xanthogranuloma of the mandible. Presentation of a case and review of the literature].

A malignant xanthogranuloma located in the mandible presented as a tumefaction of the alveolar crest with labiomental hypoaesthesia in a 52-years-old woman. The patient was treated with combined chemoradiotherapy and remained in complete remission for 14 years. Epidemiologic features (age, sex, race) of this tumour are discussed in light of the 24 cases reported in the literature. Histology features and possible treatment protocols as well as observed results are discussed. Five-year survival rate in malignant cervicofacial xanthogranulomas is estimated at 48%.

Combined Modality Therapy↗
PubMed1994

[A comparative study of rhabdomyosarcoma with cervicofacial involvement in children and adults. A therapeutic protocol].

Rhabdomyosarcoma is a malignant tumour of striated muscles. It is usually encountered in children and rarely in adults. In this study we compared sex ratios, aetiologic factors, different localizations, development stages, modes of extension and treatment as well as prognosis in children and adults with cervicofacial localizations. The differences observed led to the conclusion that cervicofacial rhabdomyosarcomas in children and adults are two very different pathological entities.

Adult↗
PubMed1994

[Lesions of the lingual nerve during extraction of the mandibular wisdom teeth. Consequences--etiopathogenesis--prevention--prognosis--legal medical aspects].

A brief review of the lingual nerve anatomy is followed by an examination of the consequences of injury to the lingual nerve during mandibular wisdom tooth extraction on sensibility and sensorial activities. The circumstances of such injury are described as a function of the position of the tooth together with means of prevention. The clinical course of injury to the lingual nerve is unpredictable and varies over time and in quality of recovery. No prognosis can be made before a reasonable delay of 18 months to 2 years. Prevention remains the best treatment and consists of using a flexible bar to protect the nerve during the operation. Rate of legal disability compensation is estimated at 2 to 5%.

Cranial Nerve Diseases↗
PubMed1994

[Accessory salivary gland calculi. Apropos of a case].

Stones occur in the accessory salivary glands more often than is generally thought due to insufficient diagnosis. Certain factors commonly favour stone formation in the salivary glands in general and others are more specific for the accessory glands. Most often, the consultation is motivated by a painful submucosal nodule. The physical examination may include a probe exploration. Calcifications are found on low penetration radiography. The stone is removed after incision under local anaesthesia.

Adult↗