The aim of the study was to investigate the effect of xylitol, from some oral hygiene products and chewing gums, on salivary parameters variation in patients with carious disease. The study was performed on 30 patients with a medium level of carious disease, randomly divided in two groups as follows: group 1 (study group), using xylitol-based products for 30 days, and group 2 (control group), using products without xylitol. The way of administration, dose, and frequency of use were as follows: toothpaste (normal daily brushing, 3 times daily); mouthwashing (5 ml, twice daily); chewing gums (two tablets, 5 times daily), for 30 days. The assessment targeted the salivary parameters as follow: saliva microcrystallisation index (IMK), resting salivary flow rate (RSF), stimulated salivary flow rate(SSF). The results of our study confirm the improvement of salivary parameters due to the use of xylitol-based products, by the positive influence on the remineralisation capacity of saliva. The assessment method of saliva IMK represents a noninvasive, simple, informational indicator for the assessment of the remineralisation capacity of saliva.
The aim of the study is to assess the action of a remineralizing product (calcium-phosphatefluoride-based varnish) on the saliva remineralization capacity on patients having dental erosions caused by frequent wine consumption. Methodology: The study group was made up of 15 patients who are frequent wine consumers. Unstimulated saliva was collected on the same day and at the same hour for each patient. A total amount of 0.5 ml of unstimulated saliva was placed on a glass plate, dried for 30 minutes in a thermostat at +37˚C, and then studied using a Nikon Eclipse E 600. The images were saved and stored on a computer. The IMK index was determined using the formula: IMK= number of the network areas filled with crystals/ number of the network areas projected on the entire saliva drop. The treatment plan for each patient included a five-week application of MI Varnish (GC Corporation) once a week. After 5 weeks IMK values were recorded again. Results: The mean value of IMK increased from 0.33 before treatment to 0.83 after treatment. The distribution of micro-crystallization categories varied from 86% Type II before treatment to 93% Type I after treatment. Conclusions: The fluor local treatment that uses varnishes containing casein phosphopeptide, tri-calcium phosphate, amorphous calcium phosphate and fluoride, increase the saliva remineralising potential and can be recommended both as preventive therapy and to counteract the erosive effect of acid oral environment on patients with dental erosions related to the frequent consumption of wine. Local treatment with GC Recaldent MI Varnish increased the remineralizing potential of saliva on patients with dental erosions due to wine consumption.
The study aimed to assess the changes of the surface roughness induced by some acidic beverages on indirect restorative materials by using profilometry. Twenty samples of three composite resins (Ceramage, SR Adoro, Luna-Wing) and three ceramics (IPS In Line, Hera Ceram, Reflex Dimension) immersed in three acidic beverages (Red Bul, wine, Coca Cola), for 5 minutes, three times daily, 14 days. The control samples were immersed in artificial saliva during the study periode. After the end of the erosive cycles and before to determine the surface roughness of the samples in the study groups, all the samples were immersed in artificial saliva for 18 hours. The surface roughness was determined in relation to the baseline surface using profilometer Perthometer_M1 (Mahr Gottingen GmbH, Germany). The immersion of the indirect restorative materials tested in the three acidic beverages lead has resulted to changes in their surface roughness. The most aggressive was wine, followed by Coca Cola, and Red Bull.
The aim of the study was to evaluate the effect of biomimetic self assembling peptides (P11 -4) on remineralization of acute and chronic incipient enamel lesions by microhardness analysis. Ten extracted permanent human teeth having incipient white spot lesions and ten extracted teeth with brown spot lesions on proximal surfaces were included in this study. Half of the extern surface of the lesions was covered with flowable composite resin (Vertise flow, Kerr Corporation) and served as negative control site. On the other half Curodont� Protect gel (Credentis AG, Windisch, Switzerland) was applied 2 times a week, 8 weeks (study). The teeth were cut mesio-distally using diamond disks under cooling water, perpendicularly to the extern surface of the lesions, in order that both areas (negative control and study) to be evaluated. The opposite proximal sound enamel on each section served as positive control. The subsurface microhardness of the enamel samples was determined using digital microhardness tester (MicroVickers Hardness System CV- 400DMTM, CV Instruments Namicon). On horizontal tooth sections indentations were made at 25�m (A1), 75 �m (A2), 125 �m (A3), 175 �m (A4), 225 �m (A5), and 275 �m (A6) bellow the extern surface of the lesions. For white spot and brown spot caries lesions, in both negative control and study groups, the VHN values increased from A1 to A6 areas. In study group VHN values were higher than in negative control group irrespective of the area of examination. The lowest VHN value was registered in negative control A1 area and the highest in study group A6 area. In all six areas of investigation, VHN values in negative control and study groups were lower than the values in positive control group. The use of self-assembling peptides on white spot and brown spot caries lesions increase the hardness of these lesions in the deeper layers of the lesions.
The study was performed to investigate the changes induced by mechanical-chemical action of a bleaching product on dental enamel and to assess the effect of some remineralization products containing calcium, phosphate, and fluoride applied in conjunction with the bleaching product by surface roughness analysis using profilometry. Forty tooth samples were randomly divided in three study groups and a control group. In control group (group IV) the samples were maintained in artificial saliva. The study groups were as follows: group I-samples submitted to bleaching procedure using Opalustre (3 times a day, 1minute each), group II-samples submitted to remineralization and then to whitening, group III-samples submitted to remineralization, whitening and then remineralization. The surface roughness was determined in relation to a reference surface using Portable Surface Roughness Measuring Tester SJ-210 (Mitutoyo, America Corporation, USA). The bleaching system Opalustre increased the roughness of enamel and the product that contains calcium, phosphate and fluoride applied before and after bleaching improved the roughness parameters.
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