Presence of microorganisms on the fitting denture complete surface: study ‘in vivo’

Abstract

It was the intention to study if glazing the fitting surface of maxillary dentures with a light-curing acrylic resin would diminish the bacterial counts. The study included the application of a photopolymerizing glaze to one half of the fitting denture surface; after 15 days microbial plaque was collected from a 1 cm2 area of the glazed and the untreated resin, respectively. At the same time bacteria were collected from a 1 cm2 area of the corresponding sites on the palatal mucosa. The application of the glaze had modified the number of bacteria cultured from the glazed surface versus the untreated surface. Denture surface: total aerobic bacteria, 1:4; aerobic streptococci, 1:4; aerobic staphylococci, 1:5; anaerobic bacteria, 1:3.5; mucosal surface aerobic bacteria, 1:4; streptococcal, 1:4. The differences were statistically significant at P<0.002. However, from a quantitative and qualitative point of view these differences were minor compared with the actual concentrations of the microorganisms of 104-106/cm2 observed on the fitting denture surface and the palatal mucosa.

Candida albicans biofilms and MMA surface treatment influence the adhesion of soft denture liners to PMMA resin

“…Braz Oral Res., (São Paulo) 2014;28(1): [1][2][3][4][5][6] and aging of soft liner and denture base. 5 In order to prevent these problems, several denture base surface treatments have been proposed to increase the bond strength between these materials.…”

“…2 This damage can increase surface roughness and create irregularities that act as sheltered sites where oral biofilms may accumulate over time. 3 These biofilms are mainly composed of C. albicans and may cause denture-induced stomatitis 4 or accelerate wear…”

Microwave assisted disinfection method in dentistry

“…(Budtz-Jorgensen & Theilade, 1983) and some bacterial species associated with systemic diseases have been found in removable dentures, with predominance of gram-positive bacteria, as Staphylococcus spp., Streptococcus spp., and Actinomyces spp. (Chau et al, 1995;Glass et al, 2001a;Monsenego, 2000). Gramnegative species, such as Neisseria perfava, P. aeruginosa, Klebsiella pneumoniae, and Enterobacter cloacae, have also been identified (Henderson et al, 1987;Latimer, 1977).…”

Avaliação Clínica e Microbiológica do Tratamento da Estomatite Protética com Tintura de Schinus terebinthifolius Raddi (Aroeira)

“…Este fato está de acordo com a literatura, onde estudos têm demonstrado que as colônias de Candida spp. são isoladas, mais freqüentemente, da superfí cie interna das próteses quando comparadas à mucosa correspondente 15 , sendo encontradas em torno de 80% das próteses 7,16 . O ambiente sub prótese proporciona um meio propício para a adesão dos microorganismos, pois há ausência de saliva impossibilitando a ação de substâncias como a amilase e IgA 5,6 .…”