Histopathological features that predict the recurrence of odontogenic keratocysts.

Background: Odontogenic keratocysts (OKCs) constitute between 1.8% and 21.5% of odontogenic cysts and are associated with higher propensity to recur than other odontogenic cysts following surgical removal.

Oral presentation of malignant mesothelioma.

We report a case of metastatic mesothelioma presenting as an oral metastasis in a 46-year-old patient. The patient presented with 2 polypoid lesions that appeared to be benign on the dorsum of the tongue. Excisional biopsy showed the presence of metastatic carcinoma that on further investigation proved to be mesothelioma.

Bespoke human hypertrophic chondrocytic cell lines provide the osteoinductive signals required for vascularized bone formation.

Hypertrophic cartilage provides the morphological and biochemical template for orchestrating bone growth. To produce a bone-inductive material such as hypertrophic cartilage for clinical use, we have conditionally immortalized hypertrophic chondrocytic cells from human femur and expanded them in vitro through more than 145 divisions. The clonal cell lines generated by this process consistently express signals that induce both rat and human marrow cells to differentiate in vitro into osteoblastic cells.

A comparison between direct and indirect methods available for human bite mark analysis.

Comparison techniques used in bite mark analysis are many and varied, the choice of technique depending largely on personal preference. Until recently, no one technique has been shown to be better than the others, and very little research has been carried out to compare different methods. This study evaluates and compares the accuracy of direct comparisons between suspects' models and bite marks with indirect comparisons in the form of conventional traced overlays of suspects' models or a new method using photocopier-generated overlays.