The production and the oral toxicity for mice of Clostridium botulinum type A and B toxins of different strains were studied. All five type B strains produced both 16S (large or L) and 12S (medium or M) toxins, although the relative amounts varied with the strains. The culture supernatant of type B Okra strain was the most potent in oral toxicity. The L toxin of this culture was about 700 times...

introduction: in orthodontic therapy ,different materials are used and their presence in oral cavity may modify their properties. the purpose of this study was to evaluate the direct and indirect biocompatibility of three orthodontic composite resins on culture of human oral fibroblasts. methods: this was an interventional experimental study. the biocompatibility of three orthodontic composite ...

PURPOSE To culture oral mucosal epithelial cells on deepithelialized human amniotic membrane without the use of feeder cells and to compare the characteristics of cultured oral cells with cultured limbal and conjunctival epithelial cells for use in ocular surface reconstruction. METHODS Oral biopsies were obtained from healthy volunteers after informed consent and were cultured on deepithelia...

This paper mainly analyzes the speech signal of Mongolian long-tune folk songs through method acoustic analysis. From perspective duration, it studies changes in length passages, sentences and vocabulary songs, discusses phonetic characteristics provides basic data for protection digital inheritance oral culture, explores establishment culture database.

Reconstruction of large oral mucosa defects is often challenging, since the shortage of healthy oral mucosa to replace the excised tissues is very common. In this context, tissue engineering techniques may provide a source of autologous tissues available for transplant in these patients. In this work, we developed a new model of artificial oral mucosa generated by tissue engineering using a fib...

BACKGROUND Inflammation within the oral cavity occurs due to dysregulation between microbial biofilms and the host response. Understanding how different oral hygiene products influence inflammatory properties is important for the development of new products. Therefore, creation of a robust host-pathogen biofilm platform capable of evaluating novel oral healthcare compounds is an attractive opti...

chromagar candida is a new chromogenic culture medium that is used for the isolation and direct identification of some of the most clinically important yeast pathogens on the basis of colony colour. the aim of the study was to isolate and identify candida species from the oral cavity with chromagar candida. samples (158) from 68 orthodontic patients wearing upper removable orthodontic appliance...