Carlo Bonfanti, Barabanti Nicola, Piccinelli Giorgio, Faus-Matoses Vicente, Cerutti Antonio
Institute of Microbiology, Department of Molecular and Translational Medicine, University of Brescia, Brescia, Italy.
Tutor, Department of Restorative Dentistry, University of Brescia, Italy.
J Clin Exp Dent. 2017 Jan 1;9(1):e40-e45. doi: 10.4317/jced.52978. eCollection 2017 Jan.
Non carious cervical lesions associated to muscle hyperfunctions are increasing. Microhybrid resin composites are used to restore cervical abfractions. The purpose of this study was to investigate if resin composites modify tooth plaque, inducing an increment of cariogenic microflora and evaluate their effect, and , against .
Eight abfractions were restored with two microhybrid resin composites (Venus, Heraeus-Kulzer® and Esthet-X, Dentsply®), after gnatological therapy, in three patients with muscle hyperfunctions. For each abfraction three samples of plaque were taken from the cervical perimeter: before the restoration, one week and three months after restoration. The samples were evaluated both by traditional microbiological methods and by Polymerase Chain Reaction (PCR). , disk-shaped specimens of the two composites were prepared to estimate the effects against pre-cultured , after incubation at 37°C for 24h and assessed by a turbidimetric technique.
no differences were found in plaque growth, for all samples, before and after restoration with both composites; , instead, a significant reduction of growth was found between specimens of two composites (Mann-Whitney U-test >0,06).
In this study a relevant consideration was elicited: composite materials, , do not modify plaque composition of non carious cervical lesions to a potential cariogenic plaque. Abfraction, restoration, S. mutans, composite, class V.
与肌肉功能亢进相关的非龋性颈部病变日益增多。微混合树脂复合材料用于修复颈部楔状缺损。本研究的目的是调查树脂复合材料是否会改变牙菌斑，导致致龋微生物群增加，并评估它们对……的影响。
在对三名肌肉功能亢进患者进行牙体治疗后，用两种微混合树脂复合材料（Venus，贺利氏古莎公司生产；Esthet-X，登士柏公司生产）修复八个楔状缺损。对于每个楔状缺损，从颈部边缘采集三份菌斑样本：修复前、修复后一周和三个月。样本通过传统微生物学方法和聚合酶链反应（PCR）进行评估。制备两种复合材料的圆盘状标本，以估计在37°C孵育24小时后对预培养的……的影响，并通过比浊技术进行评估。
使用两种复合材料修复前后，所有样本在菌斑生长方面均未发现差异；相反，在两种复合材料的标本之间发现……生长有显著减少（曼-惠特尼U检验>0.06）。
在本研究中引发了一个相关的思考：复合材料，……，不会将非龋性颈部病变的菌斑组成改变为潜在的致龋菌斑。楔状缺损、修复、变形链球菌、复合材料、V类。
