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義歯装着面における微生物の存在:「in vivo」での研究
Presence of microorganisms on the fitting denture complete surface: study 'in vivo'.
PMID: 10931267
抄録
上顎義歯の装着面に光重合型アクリル樹脂を塗布することで、細菌数を減少させることができるかどうかを検討することを意図している。この研究では,義歯装着面の半分に光重合型グレーズを塗布し,15日後にグレーズと未処理の樹脂のそれぞれ1 cm2の領域から微生物プラークを採取した.同時に口蓋粘膜の対応する部位の1 cm2 の面積から細菌を採取した.釉薬の塗布により,釉薬表面から培養される細菌数は,未処理表面に対して変化していた.義歯表面:総好気性菌,1:4;好気性連鎖球菌,1:4;好気性ブドウ球菌,1:5;嫌気性菌,1:3.5;粘膜表面の好気性菌,1:4;連鎖球菌,1:4。この差はP<0.002で統計的に有意であった。しかし,義歯表面および口蓋粘膜で観察された104-106/cm2という実際の微生物濃度と比較すると,量的および質的な観点からは,これらの差は微小であった.
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.