RESUMO
BACKGROUND: Currently various studies are conducted to improve the effect of existing and developing new remineralizing agents. One of the trends in remineralizing therapy is the development of toothpaste allowing brushite crystals formation in the demineralized lesions of hard tooth tissues. AIM: The aim of this study was to assess the effect of toothpaste, forming a brushite, on the functional acid resistance of enamel and the speed of its remineralization. MATERIALS AND METHODS: This was a randomized controlled double-blind clinical study. Sixty consent patients aged 20-25 years were enrolled in the three groups: test group (n = 20), positive control group (n = 20), and negative control group (n = 20), which used brushite-forming toothpaste, toothpaste with hydroxyapatite (HAP), and toothpaste without remineralizing agents, respectively. The hygiene indices, the rate of enamel remineralization, the dynamics of acid resistance of enamel, and the level of enamel sensitivity were determined at baseline, after 2 and 4 weeks to assess the effectiveness of toothpastes. Friedman rank sum test (for related variables) and the Kruskal-Wallis rank sum test (for independent variables) with Nemenyi post hoc test were used for statistical comparisons. RESULTS: The study test and positive control groups showed significantly greater acid resistance of enamel (P > 0.05) and rate of its remineralization at the study endpoints as compared with negative control group.In the test and positive control groups, Schiff index values significantly decreased after 4 weeks, whereas in the negative control group no significant differences were observed at the study time points. The oral hygiene level improved significantly after 2 and 4 weeks in all groups. CONCLUSION: The 30-day use of paste that promotes brushite formation and paste with hydroxyapatite resulted in faster enamel remineralization and higher enamel resistance. Brushite-containing toothpaste may be used as an alternative to HAP containing for remineralizing and desensitizing treatment.
RESUMO
AIMS: Xerostomia syndrome is a significant medical and social problem. It is manifested by objective and subjective symptoms of a "dry mouth" and a decrease in sialometry. The aim of the study was to determine the dental status of students of different nationalities, to identify xerostomia induced on a background of stress, and to assess the effectiveness of the use of moisturizing foams in alleviating xerostomia. MATERIALS AND METHODS: A prospective cohort study survey (Fox test) of 100 students of the dental faculty was conducted to detect false xerostomia. The study involved 60 people with false xerostomia, divided into four groups of 15 each according to the nationality. The level of oral hygiene was determined using the Simplified Oral Hygiene and Silness-Loe indices and the rate of salivation was assessed with sialometry method by Pozharitskaya. Oral hygiene instructions were given to the participants. They were to apply moisturizing foams with lactoferrin, lactoperoxidase, and aloe vera, two-three times during the day for 3 weeks. A set of statistical programs was used (Microsoft Excel [2007] and the Statistical Package for the Social Sciences [SPSS], version 23) to perform Kolmogorov-Smirnov, Shapiro-Wilk, Kruskal-Wallis, and Wilcoxon tests. RESULTS: A statistically significant improvement in oral hygiene was observed in all study participants. A significant increase was detected in the rate of salivation in students from Russia (P = 0.005), Transcaucasian countries (P = 0.006), and Arab countries (P = 0.005). CONCLUSION: It has been established that the use of moisturizing foam has a positive effect on the rate of salivation and improves the level of oral hygiene, thereby improving the quality of life for patients.
RESUMO
PURPOSE: This prospective study is aimed at investigating clinically and histologically the effectiveness of a biomimetic magnesium-enriched-hydroxyapatite (MgHA)/collagen-based bone substitute for alveolar socket preservation. MATERIALS: Patients scheduled for posterior single tooth extraction were included. The alveolar socket was filled either with MgHA or deproteinized bovine bone matrix (DBBM). In DBBM group, a punch of mucosa was taken from the palate and used to cover the graft. Vertical and horizontal dimensional changes of the alveolar process were assessed clinically with a periodontal probe and with 3-dimensional (3D) analysis of a cast model. Postoperative quality of life was assessed through a questionnaire. After 6 months of healing, an alveolar tissue biopsy was taken for histologic and histomorphometric analysis of the newly formed tissue. After checking normality of the distributions, parametric or nonparametric tests were used for statistical comparisons. RESULTS: Twenty patients (12 males, 8 females, mean age 42.8â±â5.1 years, range 33-50 years) were treated. After 6 months, vertical and horizontal alveolar ridge resorption was similar in the 2 groups. The 3D analysis of the models showed a significantly higher resorption at the buccal side than at the palatal/lingual side. Histomorphometric analysis showed similar new bone formation for MgHA group (23.07â±â10.3%) and DBBM (22.77â±â6.95%), and a significantly higher residual material% for DBBM (15.77â±â1.95%) than MgHA (5.01â±â1.04%). Significantly less pain was reported in the first 3 days after surgery in patients of the MgHA group. CONCLUSION: The MgHA was as safe and effective as DBBM and may represent a feasible bone substitute for alveolar socket preservation.
