Congenital alveolar synechiae - a case report.

Congenital alveolar synechiae is rarely seen as an isolated disease. It is generally observed together with various syndromes such as Van der Woude and cleft palate lateral alveolar synechiae syndrome, and is concomitant with other anomalies in the maxillofacial or other regions of the body. Prior to this case report , eight cases of isolated congenital alveolar synechiae have been reported. This paper reports a case of isolated congenital alveolar synechiae in a 10-month-old baby girl. The report concentrates on the clinical features of isolated congenital alveolar synechiae, the likely aetiological causes and the treatment.

Determinants of MR relaxation rates in jaw cysts: implications for diagnostic values of the relaxation times.

OBJECTIVES: The MRI signal intensities and the relaxation times (T1 and T2) have already been used for comparisons among various types of cysts. The signal intensities (or T1 and T2) were suggested to be related to cyst content. However, such a relationship between the relaxation rates (1/T1 and 1/T2) and the aspirated content of jaw cysts was not given. Therefore, an investigation on the determinants of the relaxation rates in the jaw cysts may be helpful in elucidating the biological basis for the differences in relaxation rates among the categories of jaw cysts. METHODS: The aspirated contents of 23 cysts (16 radicular and 7 haemorrhagic) were scanned using an MR imager operating at 1 T magnetic field strength. The viscosities and the dry-weight-to-water-weight ratios (Ms/Mw) were determined. Also, the mean values of cyst categories were compared using statistical analysis. RESULTS: The 1/T1 had a moderate correlation with viscosity (0.66) and Ms/Mw (0.56), while the 1/T2 had a good correlation with viscosity (0.87) and Ms/Mw (0.82). The mean values of viscosity, Ms/Mw and relaxation rates in radicular cysts were significantly lower (P < 0.05) than those of haemorrhagic cysts. CONCLUSIONS: The present data suggest that similarities and differences between relaxation rates of radicular and haemorrhagic cysts can be explained by the solid content and viscosity of cysts.

Comparison of computed tomography with conventional radiography for midfacial fractures.

OBJECTIVE: To compare the clinical effectiveness of computed tomography (CT) with conventional radiography in midfacial fractures. METHODS: The conventional radiographs (CM) and CT scans of 40 consecutive patients with complex midfacial fractures were assessed independently by two examiners. The number and site of fractures of the orbit, zygoma and maxilla were compared by the Wilcoxon Matched Pairs Signed Rank test. The best method for classification of the fracture was determined. RESULTS: Coronal CT (CCT) proved superior in the diagnosis of orbital fractures (P<0.001). There was no significant difference between any of the imaging methods for fractures of the zygoma. Axial CT (ACT) was the most effective method in imaging of maxillary fractures (ACT-CM; P<0.001, ACT-CCT; P<0.01). CCT was the most useful in classification of orbital and maxillary fracture. CONCLUSION: CCT is superior to CM for the assessment of complex midface fractures

Oral myiasis caused by hypoderma bovis larvae in a child: a case report.

Myiasis is the invasion of living tissue of humans and other mammals by the eggs or larvae of flies of the order of Diptera. It occurs mainly in the tropic, and is associated with inadequate public and personal hygiene. Oral myiasis in humans appears to be rare. This article records a case of oral myiasis caused by larvae of Hypoderma bovis. Two different pathologic soft tissue sockets were observed in the vestibular sulcus at the level of the both deciduous laterals along the deep upper lip tissues.