| 1. |
- Fagrell, Tobias G, et al.
(författare)
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Effect of ozone treatment on different cariogenic microorganisms in vitro.
- 2008
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Ingår i: Swedish dental journal. - : Swedish Dental Association. - 0347-9994. ; 32:3, s. 139-47
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Tidskriftsartikel (refereegranskat)abstract
- Ozone treatment has been presented and discussed in the literature, as one of the "new" ways to treat dental caries. The aim of this paper was to study the in vitro effect of ozone on some common oral microorganisms related to dental caries using scanning electron microscopy (SEM). The effect of ozone was tested on three different strains of mutans streptococci and one Lactobacillus strain. After exposure of bacteria to ozone treatment for 0 to 60 sec, cultivation on different chair side strips and agar plates took place. Preparation and performance of scanning electron analyses in a field emission scanning electron microscope at 10 kV was then carried out. It was found that gaseous ozone treatment for 20 seconds or more was effective to kill the different microorganisms in vitro. Treatment of 20, 40 and 60 seconds of ozone prevented the bacteria to grow on the different media. Treatment times shorter than 20 seconds resulted in varying results with a limited effect on bacterial growth for treatments of 5-10 sec, respectively. The difference between ozone-treated and untreated specimens was macroscopically readily discernable. None of the strains treated with ozone for 60 seconds showed any bacterial growth. Only samples with untreated bacteria could be found in the SEM analyses in form of large and high colonies. This study presents a clear result of the bactericide effect of ozon (in vitro) on four different strains of bacteria associated with dental caries.
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| 2. |
- Hellovist, Lena, et al.
(författare)
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Dental caries and associated factors in a group of Swedish snus users
- 2015
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Ingår i: Swedish Dental Journal. - 0347-9994. ; 39:1, s. 47-54
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Tidskriftsartikel (refereegranskat)abstract
- The aim of this study was to investigate the effects of the Swedish moist powder tobacco product known as "snus" on dental caries and to measure the pH fall in dental plaque. The subjects comprised male and female adults between 26 and 62 years of age (n=102), all habitual snus users for >= 10 years. The control group (n=101) consisted of similar individuals in terms of gender, age and educational level but with no tobacco use for >= 10 years. A clinical and radiographic examination and a questionnaire were completed.The pH fall after a sucrose rinse was estimated in situ in 10 randomly selected subjects per group. The salivary secretion rate was higher in snus users than non-users (2.5 vs 2.2 ml/min, p=0.005). There was no statistically significant difference regarding salivary buffer capacity. No differences were found between the two groups in terms of the plaque index, primary or secondary enamel and dentine caries, DFS and salivary counts of mutans streptococci or lactobacilli. The pH fall was somewhat more pronounced among non-users compared with snus users (NS). Snus users had a lower intake of snacks between meals and a less frequent intake of cookies (p=0.000). Furthermore, snus users had a mean gingival index (+/- SD) for the whole dentition of 20.4 +/- 18.2, while the index for non-users was14.4 +/- 13.9 (p=0.009); the corresponding values for teeth 13-23 were 14.9 +/- 20.6 and 7.7 +/- 11.9 respectively (p=0.003). To conclude, this clinical study revealed no statistically significant differences in caries prevalence between snus users and non-users and only minor differences regarding different cariesassociated factors.
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| 3. |
- Hellqvist, Lena, et al.
(författare)
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Effect of nicotine-free and nicotine-containing snus on plaque pH in vivo
- 2012
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Ingår i: Swedish Dental Journal. - 0347-9994. ; 36:4, s. 187-194
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Tidskriftsartikel (refereegranskat)abstract
- The aim was to investigate pH changes in plaque in vivo during the use of nicotine- free and nicotine-containing snus. The carbohydrate content of the products was also analysed. Ten subjects, all regular snus users, participated in an experimental cross-over study, on eleven occasions with an interval of one week. Six nicotine-free and four nicotine-containing products, which are sold on the Swedish market, were included and a sucrose solution was used as a control. The subjects did not brush their teeth for three days before coming to the laboratory, without eating, drinking or using snus/smoking for two hours prior to the test. pH was measured at three approximal sites up to 45 min with the test product placed under the upper lip. The carbohydrate analysis showed that the nicotine-containing products contained only traces of glucose, fructose and sucrose (0.5-1%) and starch (1.5%). Some of the nicotine-free products contained up to 6.5% low-molecular-weight carbohydrates and 26.0% starch. The intraoral pH measurements showed that four nicotine-containing products increased the plaque pH, in contrast to three of the six nicotine-free products, which lowered the pH. These pH changes may have an effect on the caries risk, both positively and negatively, depending on which product is used.
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| 4. |
- Särner, Barbro, 1942, et al.
(författare)
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Use of different mouth rinses in an adult Swedish population
- 2012
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Ingår i: Swedish Dental Journal. - 0347-9994. ; 36:1, s. 53-60
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Tidskriftsartikel (refereegranskat)abstract
- The purpose of this study was to evaluate the use of mouthrinse products in a Swedish adult population and the factors that influence their use. A questionnaire, comprising semi-closed questions focusing on mouthrinses for oral health, was distributed to randomly selected 700 individuals aged 17-94years (final response rate of 60%). The data revealed that 47% of the individuals use a mouthrinse product on a regular basis and that it does not differ significantly due to age. Women use such products to a greater extent than men. Individuals who brush their teeth and who use approximal cleaning aids frequently appear to use mouthrinse products to a greater degree. Rinsing is primarily performed once a day or more (45%), in the evening (57%) and after brushing (87%). Those individuals that have been recommended to use the products by dentists and dental hygienists use them to a greater degree (78%) than those who have not received any recommendations (27%). Apart from dental personnel, advertising also plays a significant role in product selection. Of the different products available on the market, pure fluoride products constitute 46%. To summarise, this study indicates that a Swedish adult population, especially women, uses mouthrinse products to a relatively large extent, mainly as a supplement to other oral hygiene procedures such as brushing with a fluoride toothpaste twice daily. To select the most suitable product, the dental personnell should play a more active role in recommendations to the patients who need or want to use mouth rinses.
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