Poor oral hygiene has been considered one of the main problems routinely faced in the orthodontic treatment. Orthodontic appliance creates an environment that provides mineral loss from the dental enamel. Such condition is clinically seen as white spot lesions and cavitations in the most severe cases. The aim of this study was to evaluate the effects of a fluoride varnish application as a carie...

INTRODUCTION Assessment of cellular cytotoxicity is a regular method for evaluating the biocompatibility of novel materials. In a recent study, 5% fluoride varnish (Duraflur) has shown reasonable sealing ability and coverage of root canal walls when used as a sealer. The aim of the present study was to compare the cytotoxicity of Duraflur varnish with two popular commonly used root canal sealer...

OBJECTIVE To investigate the effect of chlorhexidine applications in various forms and concentrations on adhesion and failure modes of metal brackets in vitro. MATERIAL AND METHODS Ninety bovine enamel specimens were allocated to six groups (n=15). Metal brackets were bonded on all specimens after chlorhexidine pre-treatments forming the following groups: (1) untreated specimens (control); (2...

The aim of this study was to evaluate the use of fluoride varnish as a prophylaxis method with self etching primer (SEP) and its comparison with pumice before orthodontic bonding. Thirty seven orthodontic patients participated in a prospective clinical trial. A split mouth technique was used in each patient, one quadrant was assigned to fluoride varnish and the contralateral quadrant to pumice ...

INTRODUCTION Our objective was to evaluate the efficacy of a fluoridated varnish in preventing white spot lesions in patients with fixed appliances. A laser-induced fluorescence device was used to determine any correlations between the degree of demineralization and the length of the observation period, the arch sector, the frequency of varnish application, and the specific tooth site. METHOD...

OBJECTIVE The aim of this study was to evaluate the efficacy of CPP-ACP containing fluoride varnish for remineralizing white spot lesions (WSLs) with four different quantitative methods. MATERIAL AND METHODS Four windows (3x3 mm) were created on the enamel surfaces of bovine incisor teeth. A control window was covered with nail varnish, and WSLs were created on the other windows (after demine...

Paintings are made up of materials that can suffer damage with the passage of time. To protect them over a long period, they are coated with a protecting covering of varnish layer. The varnish layer over paintings is affected by atmospheric conditions, fluctuations in temperatures, humidity and sunlight. Over a period of time, the transparency of the varnish becomes clouded and discolored, ofte...

This article presents the effect of Tinuvin 292 (a light stabilizer based on liquid hindered amine) properties chlorinated rubber varnish/coating under 100 UV-thermo-humidity complex cycles. The included relative hardness, adhesion, flexural strength, impact resistance, and gloss loss. results showed that 2.5 weight percent (wt%) had much improved physical varnish coating such as Fourier-transf...

A central problem in archaeological research has been the chronometric dating of petroglyphs (rock engravings). Recent improvements in the understanding of the chemistry of rock varnish (or patina) that develops on rock surfaces in arid regions has resulted in the development of a calibrated dating technique, cation-ratio (CR) dating. This is based on calibrating chemical changes in minor and m...

BACKGROUND Early childhood caries is one of the most prevalent chronic diseases of children that affect their life and their family in different aspects. Using different types of fluoride is one of the most effective ways for preventing the disease. Fluoride varnish is a topical fluoride product which could use in the community even by non-professional. This study aimed to assess the effect of ...