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Results for “Maxillary Sinusitis”

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At least 91 records · Page 5Linked to original sources
PubMed1997

Mucociliary function of the maxillary sinuses after restoring ventilation: a radioisotopic study of the maxillary sinus.

Ostium patency and sinus ventilation play a key role in the normal function of the sinuses and the pathogenesis of sinusitis. Experience with endoscopic treatment modalities has indicated that even severe mucosal disease in the maxillary and frontal sinuses will heal after eradication of an infectious focus in the ethmoid and maintaining ventilation and drainage of sinuses. The aim of this study was to use scintigraphic methods to evaluate possible differences in mucociliary function of chronically diseased maxillary sinuses after establishment of ventilation. Fourteen patients (22 maxillary sinuses) and 3 controls (6 maxillary sinuses) were evaluated after functional endoscopic sinus surgery. The drainage ratios of sinuses at 20 min were calculated at the 3rd postoperative day and again at 3 weeks. When the early and late postoperative drainage ratios were compared it was found that mucociliary function returned to normal after 3 weeks in sinuses with cysts but without hyperplastic mucosal degeneration. While the mucociliary function and drainage improved significantly in sinuses with hyperplastic mucosa, depending on the severity and extension of the pathology present, it was still less than levels found in normal sinuses at 3 weeks.

Adolescent↗
PubMed1989

[Experimental and clinical analysis with the reconstruction of the fenestrated anterior wall of the sinus maxillaris].

A comparative macroscopie and hystomorphological analysis of shutting the fenestrated front wall of the maxillary sinus is done with 34 rabbits. An autogenic bony cover and grates made of chromium cobaltomolybdenum and non-coloured plastic. Are used 30 patients are operated on with the same materials with tracing the process of reparation and the aeration of the operated sinuses. The results are compared with another group of patients operated without a reconstruction of the facial bony defect. The importance of reconstruction for reparation of the ventilation ability of the operated sinuses in the after-operational period is proved.

Animals↗
PubMed1982

[Aerodynamic aspects in the concept of treatment in chronic sinusitis maxillaris (author's transl)].

Hitherto the conditions of air flow had been neglected in the concept of treatment of chronic inflammation of the maxillary sinus. Our experimental and clinical studies with measurement of airflow and temperature yielded several aspects of clinical importance as follows: The maximum size of the operated opening in the antral wall should be more than 10 X 10 mm. to achieve optimal ventilation. If there are two meatal open windows, the operated fenestration in the inferior meatus, for example, and the ostium maxillaris in the middle meatus, an "aerodynamic short circuit" arises. This results in insufficient ventilation. Large fenestrations have the same effect.

Biophysical Phenomena↗
PubMed1988

[The hiatus semiluminaris, the infundibulum and the ostium of the sinus maxillaris, the anterior attached zone of the concha nasalis and its distance to the landmarks of the outer and inner nose].

The authors described the Infundibulum and Ostium of the maxillary sinus, its width and location and course in the Hiatus semilunaris. There were counted and measured also the accessory Ostia, the Processus uncinatus and Bulla ethmoidalis and distances to landmarks between the outer nose and the Limen nasi to these structures.

Ethmoid Bone↗
PubMed1996

Mucocele of the maxillary sinus.

The maxillary sinus mucocele is a rare condition and it usually presents clinically as a benign tumor. Sixteen patients were evaluated. A previous history of surgery or injury to maxillary sinus was obtained in 12 cases, the diagnosis being confirmed by computed tomography imaging. Recovery is often complete after Caldwell-Luc operation. The authors discuss some important aspects of diagnosis and treatment.

Adult↗
PubMed2002

Endoscopic sinus surgery for inflammatory maxillary sinus disease.

OBJECTIVE/HYPOTHESIS: The role of endoscopic sinus surgery for treating chronic maxillary sinusitis is well established. The purpose of the study is to determine the efficacy of endoscopic sinus surgery in the treatment of maxillary sinus inflammatory disease that includes mucoceles, retention cysts, and antrochoanal polyps. STUDY DESIGN: This is a retrospective review of 32 consecutive patients who underwent endoscopic sinus surgery for mucoceles (n = 21), retention cysts (n = 5), or antrochoanal polyps (n = 6). METHODS: The medical records were reviewed for patient demographics, presenting symptoms, and type of operation. Surgical outcome was determined by resolution of symptoms, recurrence of disease, and need for revision or additional surgery. RESULTS: Ethmoidectomy with middle meatal antrostomy was performed in all patients; 28 patients had additional middle turbinectomy. Postoperative follow-up ranged from 6 months to 4 years. The operation resulted in resolution of symptoms and a patent antrostomy on long-term follow-up in all cases of mucoceles. No case required revision surgery. On the other hand, the disease recurred in three patients (60%) with retention cysts and three patients (50%) with antrochoanal polyps despite patent antrostomies. The recurrences occurred 3 to 6 months after the surgery. The recurrent cases of antrochoanal polyps required Caldwell Luc procedures. The three failures in cases of retention cysts were successfully managed with repeated office endoscopic marsupialization through a patent antrostomy. CONCLUSIONS: Endoscopic sinus surgery is an effective treatment for mucoceles, with favorable long-term outcome. Maxillary retention cysts commonly recur after endoscopic sinus surgery. However, the recurrence can be managed in the office through a patent antrostomy. Endoscopic sinus surgery may be offered as initial surgical treatment for antrochoanal polyps, but a Caldwell Luc operation may be needed for recurrent disease.

Adult↗
PubMed1994

Disorders of the maxillary sinus.

The maxillary sinuses often are visualized on oral and maxillofacial radiographs, and the dentist should be able to interpret any signs of disease in the area. In addition, disorders of the sinuses may result in symptoms that the patient interprets to be of dental origin. Conversely, dental diseases may influence the radiographic appearance of the sinuses. This article reviews the radiographic signs of common sinus disorders to help the clinician accurately assess the patient.

Cysts↗
PubMedDate not supplied

Paranasal sinus radiology, Part 4A: Maxillary sinuses.

The maxillary sinus is frequently involved by inflammatory change. It is also the sinus that is most affected by intrinsic or nearby neoplasms. Since neoplasia and inflammatory disease may mimic each other, radiologic examination often becomes the principal means of differentiating them. Principles of radiologic diagnosis, with attention to changes in the various bony margins in maxillary disease processes, form the basis of this article.

Adolescent↗
PubMedDate not supplied

Paranasal sinus radiology, Part 4B: Maxillary sinuses.

The maxillary sinus is frequently involved by inflammatory change. It is also the sinus that is most often affected by intrinsic or neighboring neoplasms. Since neoplasia and inflammatory disease may mimic each other, radiologic examination often becomes the principal means of differentiating them. Principles of radiologic diagnosis, with attention to changes in the various bony margins in maxillary disease processes, form the basis of this article.

Humans↗
PubMed1975

[The effect of various antibiotics on the mixed flora of the maxillary sinus in sinusitis(author's transl)].

The effect of four frequently used antibiotics on the germs of the sinus maxillaris was studied. For this purpose germs of the sinus max. rinsing fluid, got from 127 patients, were cultured under nearly the same physical and chemical conditions which can be expected in the sinus itself. Each antibiotic substance was studied with three different comcentrations in the culture medium. By extrapolation of the linear regression between some characteristical parameters of the culture absorbancy development and the concentration, the inhibitory concentration can be estimated. The efficacy decreases in the following order: Doxycyclin greater than Gentamycin greater than Ampicillin greater than Lincomycin. An inhibitory concentration results, if the antibiotics are instilled in the sinus itself. The general side effects can be neglected but not at all the local ones. Investigations in this direction are still going on. As a preliminary report, 700 instillations of Lincomycin turned out with no incident.

Administration, Topical↗
PubMed2003

Reduced nitric oxide in sinus epithelium of patients with radiologic maxillary sinusitis and sepsis.

Radiologic maxillary sinusitis is an important risk factor for development of bronchopneumonia in mechanically ventilated patients. Nitric oxide produced within the paranasal sinuses is considered to provide an antibacterial environment and to modulate mucociliary clearance function. We hypothesized that a reduced formation of nitric oxide might contribute to the compromised local host defense in radiologic maxillary sinusitis and measured nitric oxide levels directly within maxillary sinuses of septic patients with radiologic maxillary sinusitis (n = 11), whose sinuses were fenestrated to eliminate a possible septic focus. Data were compared with those of patients without airway inflammation (n = 11, control subjects). Despite local inflammation and infection, we found considerably lower maxillary nitric oxide levels than in control subjects (31 +/- 10 versus 2554 +/- 385 parts per billion, mean +/- standard error of the mean, p < 0.001). Consistently, immunohistochemical and in situ hybridization investigations revealed strongly reduced expression of inducible nitric oxide synthase. By applying ultrastructural immunolocalization, we identified cilia and microvilli of the maxillary sinus epithelium as the major nitric oxide production site in control subjects. Our findings provide evidence of markedly reduced nitric oxide production in maxillary sinuses of patients with radiologic maxillary sinusitis and sepsis, implicating impaired local host defense and an increased risk for secondary infections.

Adult↗
PubMed1999

Malondialdehyde levels and superoxide dismutase activity in experimental maxillary sinusitis.

OBJECTIVE: Acute maxillary sinusitis is one of the most common diseases in human. Reactive oxygen metabolites (ROMs) produced also physiologically in the body, are normally neutralised by antioxidative enzymes such as superoxide dismutase (SOD). Infection is one of the causes of increased ROMs production. The most important mechanism of tissue damage produced by ROMs is the peroxidation of lipids found in cell membranes and it may be estimated by malondialdehyde (MDA) levels. The purpose of this study, is to investigate tissue damage caused by ROMs in maxillary sinusitis in 24 rabbits. METHODS: Experimental sinusitis was induced by blocking the right nose and inoculating Staphylococcus aureus into the right maxillary sinuses. Left maxillary sinuses were the control group. Animals were divided into three groups and killed at 3, 5 and 7 days. Mucosas of each maxillary sinus were examined histopathologically and MDA levels were determined. Blood samples were obtained preoperatively (control blood) and on killing days (experimental blood). Serum MDA levels and erythrocyte SOD activities were determined. RESULTS: All the infected sinuses displayed signs of the inflammation. MDA levels and SOD activities in the experimental blood samples were significantly higher than those of the control group (P < 0.05). Mucosal MDA levels in the experimental group were significantly higher than the controls (P < 0.01). CONCLUSIONS: In maxillary sinusitis caused by S. aureus an increased ROMs production was observed and it may contribute to tissue damage of sinusitis.

Acute Disease↗
PubMed1991

Ethmomaxillary sinus and hypoplasia of maxillary sinus.

In a series of 410 coronal CT scans performed to assess paranasal sinus disease, we have identified eight cases in which an ethmomaxillary sinus was present. The ethmomaxillary sinus was unilateral in five cases and bilaterally present in three. The sex incidence was equal. Four patients had generalized mucosal disease of their paranasal sinuses which included the ethmomaxillary sinus whereas four patients had osteomeatal complex disease and sparing of their ethmomaxillary sinus. The characteristic radiological features of an ethmomaxillary sinus were drainage into an enlarged superior meatus, reduction in the size of the maxillary sinus and a normal bony orbital cavity. The differential diagnosis of an apparently hypoplastic maxillary sinus is briefly discussed.

Congenital Abnormalities↗