Adjunctive use of essential oils following scaling and root planing: a randomized clinical trial

Background: Hitherto no study has been published on the effect of the adjunctive administration of essential oils following scaling and root planing (SRP). This study describes the effect of a mouthrinse consisting of essential oils (Cymbopogon flexuosus, Thymus zygis and Rosmarinus officinalis) following SRP by clinical and microbiological variables in patients with generalized moderate chronic periodontitis. Methods: Forty-six patients (aged 40–65 years) with moderate chronic periodontitis were randomized in a double-blind study and rinsed their oral cavity following SRP with an essential oil mouthrinse (n = 23) or placebo (n = 23) for 14 days. Probing depth (PD), attachment level (AL), bleeding on probing (BOP) and modified sulcus bleeding index (SBI) were recorded at baseline and after 3 and 6 months. Subgingival plaque was taken for assessment of major bacteria associated with periodontitis. Results: AL, PD, BOP and SBI were significantly improved in both groups after three (p < 0.001) and 6 months (p ≤ 0.015). AL improved significantly better in the test than in the control group after 3 and 6 months (p < 0.001), so did PD after three months in the tendency (p = 0.1). BOP improved better in the test group after 3 months (p = 0.065). Numbers of Treponema denticola (p = 0.044) and Fusobacterium nucleatum (p = 0.029) decreased more in the test than in the control group after 3 months, those of Tannerella forsythia after 6 months (p = 0.039). Prevotella micra (p < 0.001,p = 0.035) and Campylobacter rectus (p = 0.002,p = 0.012) decreased significantly in both groups after 3 months. Conclusions: The adjunctive use of a mouthrinse containing essential oils following SRP has a positive effect on clinical variables and on bacterial levels in the subgingival biofilm

Effect of Cationised Long Fibers as Additive On Mechanical Properties of CMP

Chemical additives are usually used in papermaking industry as an effective way to enhance the strength of paper. However, the researches indicate that their effectiveness depends on dosage rate and application of them is associated with some problems. Recently utilization of cationised fiber has been suggested as a solution. Therefore in this study, the effects of cationised fiber have been evaluated as strength additive. Long fibers of softwoods by the use of cationic agent EPTMAC at 5, 10 and 15% were cationised and added to the CMP on levels 1, 3 and 5%. Finally, tensile, burst and tear strength of hand sheets were evaluated. The results showed that with increasing cationised long fiber levels, the strength of CMP will enhance too. Long fibers cationised at 10% also brought about highest strength

Dielectric properties of oil impregnated kraft and soda pulps

This research was carried out with the aim of determining dielectric properties of bagasse unbleached soda pulp, long fiber kraft pulp and a mixture of both (20% kraft + 80% bagasse soda).The hand-sheets with 60 g/m2 basis weight were made after adjusting the freeness of pulps at levels of 200 ± 25 ml and 400± 25 ml and dried under mild condition around zero moisture content.  Then the impregnation processes were carried out with mineral oil under vacuum at certain temperature. Finally the dielectric properties of impregnated papers including capacitance, insulation resistance, dielectric constant, and loss tangent were measured. The results showed that the refining give rise to enhance the dielectric properties in particular capacitance value. The dielectric properties of oil impregnated paper also increased. According to the preliminary results, unbleached soda bagasse pulp and its mixture with kraft pulp (20% Kraft -80% bagasse soda) found to be the suitable alternative with respect of dielectric applications for replacing kraft pulp, providing successful performance of the aging test

Dobowy rytm ciśnienia tętniczego i powiązane czynniki u chorych z nadciśnieniem tętniczym

Introduction. Hypertension is a common, almost asymptomatic, detectable and treatable disease. Abnormal circadian rhythm of blood pressure is associated with increased risk of disorders such as sleep problems, metabolic syndrome, cardiovascular disease and cancer. On the other hand, 24-hour blood pressure monitoring, a method for detecting the abnormal pattern of blood pressure decrease over night, gets less clinicians’ attention. This study aims to determine the circadian rhythm of blood pressure and its related factors in hypertensive patients. Material and methods. This analytical cross-sectional study was done in 2015. The study population was patients referred to the offices and clinics in the city of Qom and 183 of them were selected based on convenience sampling. Data were collected by use of demographic checklist and the results of 24-hour monitoring of blood pressure. Results. The mean age of patients was 52.08 ± 14.16 years, and 57.9% were female. The mean duration of hyper- tension history was 4.32 ± 4.96 years. 77% of the patients had non-dipper blood pressure pattern. In terms of age (p = 0.31) and duration of hypertension (p = 0.93), gender (p = 0.55) and type of hypertension treatment (p = 0.96), there was no significant difference between the two groups of dippers and non-dippers. Conclusions. In this study, the frequency of non-dipper pattern in patients with hypertension was higher than in similar studies. Since the importance of 24-hour blood pressure monitoring for proper evaluation and management, it is recommended that hypertensive patients undergo 24-hour blood pressure monitoring.Wstęp. Nadciśnienie tętnicze jest częstą, niemal bezobjawową, wykrywalną i poddająca się leczeniu chorobą. Nieprawidłowy dobowy rytm ciśnienia tętniczego wiąże się ze zwiększonym ryzykiem zaburzeń, takich jak problemy ze snem, zespół metaboliczny, choroby sercowo-naczyniowe i nowotwory. Jednak całodobowe monitorowanie ciśnienia tętniczego, metoda pozwalająca wykryć nieprawidłowości w zakresie nocnego spadku ciśnienia tętniczego, cieszy się stosunkowo małym zainteresowaniem wśród lekarzy. Badanie przeprowadzono w celu określenia dobowego rytmu ciśnienia tętniczego i powiązanych czynników u chorych z nadciśnieniem tętniczym. Materiał i metody. To analityczne przekrojowe badanie przeprowadzono w 2015 roku. Badana populacja obejmowała pacjentów gabinetów lekarskich i klinik w mieście Qom, a do analizy włączono próbę 183 chorych. Zgromadzono odpowiednie dane demograficzne chorych oraz wyniki całodobowego monitorowania ciśnienia tętniczego. Wyniki. Średni wiek chorych wynosił 52,08 ± 14,16 roku. Kobiety stanowiły 57,9% uczestników. Średnia czas od wykrycia nadciśnienia tętniczego wynosił 4,32 ± 4,96 roku. U 77% uczestników stwierdzono brak nocnego spadku ciśnienia tętniczego (profil non-dipper). Nie stwierdzono istotnych różnic pod względem wieku (p = 0,31), czasu od wykrycia nadciśnienia tętniczego (p = 0,93), płci (p = 0,55) i metody leczenia nadciśnienia tętniczego (p = 0,96) między osobami z prawidłowym nocnym spadkiem ciśnienia tętniczego (profil typu dipper) a osobami z profilem typu non-dipper. Wnioski. Częstość braku prawidłowego spadku ciśnienia tętniczego w godzinach nocnych była w badaniu autorów większa niż w innych tego typu badaniach. Z uwagi na znaczenie całodobowego monitorowania ciśnienia tętniczego w diagnostyce i leczeniu ciśnienia tętniczego zaleca się wykonywanie tego badania u chorych z nadciśnieniem tętniczym