saliva is a link between the oral cavity structures and tissues (How is it a link? Not so clear sentence). Moreover, saliva is composed of aqueous lipids, mucins and other bioactive molecules coatings found in the oral cavity. These compounds are essential for the activity of saliva, including texture perception, protection, surface lubrication and mouthfeel (1). A study conducted by Badet and Thebud demonstrated the presence of several microorganisms in saliva, including the Lactobacilli, which was shown to correlate with the rates of dental plaque and levels in saliva (2). The oral cavities can be associated with systemic health and oral health, whereas changes in many factors(does the refernce say which factors?) can result in the shift of oral microbiota composition, thereby causing oral diseases (3). Hoffmann and Daniels (4) ascertained that Lactobacillus species resulted in the overall health of the oral cavity by eliminating other bacterial species such as the periodontopathic bacteria (does it say which bacteria that is the periodontophatic?) that resides in the saliva. In vitro studies conducted by Smark-Mattison et al. (5) revealed that the Lactobacillus species found in the saliva of dental carries free individuals were more effective in the elimination of Streptococci mutants compared to the Lactobacillus isolated from patients who had dental caries (can you rewrite this sentence so it is not so confusing. Make it more clear.). From the assertions made in these two studies, contradicting conclusions were based on the role of Lactobacillus species in the saliva of patients with dental caries.
Composition of Saliva