AIM To examine the influence of ultraviolet C (UVC) radiation on blood, saliva, semen, and naked DNA samples for preventing DNA cross-contamination on working surfaces in laboratories. METHODS Blood, saliva, semen, and DNA isolated from buccal swab samples were obtained from a single male donor and applied to the laboratory working surfaces. UVC radiation was applied to these diluted and undi...

BACKGROUND Candida albicans is a dimorphic fungus that is part of the commensal microbial flora of the oral cavity. When the host immune defenses are impaired or when the normal microbial flora is disturbed, C. albicans triggers recurrent infections of the oral mucosa and tongue. Recently, we produced NOD/SCID.e2f1-/- mice that show hyposalivation, decrease of salivary protein flow, lack IgA an...

Background: Lactobacillus acidophilus is involved in plaque formation and progression of caries, studies show that it can be transmitted through the toothbrush. Thus, decontamination toothbrush necessary for oral health. This study aimed to assess efficacy different immersion times chlorhexidine (CHX) reducing L. contamination Methods: experimental was conducted on 84 dental students. Primary s...

BACKGROUND Dental procedures involve contact between instruments and the patient's tissues, blood or saliva. This study evaluated the efficacy of the standardized sterilization of non-disposable air/water syringe tips and corrosion and contaminant build-up in these tips. METHODS The bacterial contamination of single-use and multiple-use non-disposable air/water syringe tips after routine use ...

For the first time, a simple on-line continuous leaching method, where artificial gastrointestinal fluids are sequentially pumped through a mini-column of food while As is continuously monitored by inductively coupled plasma mass spectrometry (ICP-MS), is used to assess the bio-accessibility of As in Arabic area rice. This on-line leaching method offers several advantages over batch methods; mo...

objective: the aim of this study was to investigate the effect of phosphoric acid re-etching of an enamel surface treated via a one-bottle adhesive system on shear bond strength between resin composite and the enamelsurface in different stages of adhesive application. materials and methods: extracted intact premolars (n=84) were divided into sevengroups (n=12). in the control group 1, the adhes...

The objective of this study was to evaluate the effects of methods of acid application, wash times, and saliva contamination on the tensile bond strength of a composite resin to enamel Ninety human maxillary central incisors were used and the tensile bond strength was determined for the composite resin to enamel surfaces subjected to the following acid etch parameters. In the control group (A) ...

Aim: To evaluate and compare the effect of saliva decontamination procedure on shear bond strength a Universal eighth generation adhesive system to dentin after polymerization. Materials & Method: Forty extracted non-carious premolars were mounted acrylic block their occlusal surfaces grounded flat exposed middle depth dentin. The teeth then randomly divided into five Groups: Group A(contro...