This in situ study will recruit 30 adult subjects (between 18-50 years of age). No potential subject will be excluded from this study, regardless of their gender or racial/ethnic origins. However, it is expected that about 18 (60%) of the 30 subjects in the trial will be women. This distribution will allow for meaningful comparisons between gender groups. We will recruit patients attending the clinics of UTHSCSA dental school clinics, which reflect the ethnic mix of the area the clinics serve. However, majority of subjects will be Hispanic due to the high Hispanic prevalence (57.8%) in San Antonio. Thus, minorities will be included at a similar rate to that in the general population attending for dental care,