Clinical oral investigations
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This study examined the effects of a vegetable extract from Lupinus albus (LU105) on MMPs and TIMPs secreted by human gingival fibroblasts in culture. LU105 was extracted from seeds of L. albus and is freely soluble in water. Gelatin zymography showed that control human gingival fibroblasts maintained in culture for 48 h express pro-MMP2 (progelatinase A) in the culture medium while the active form of MMP2 (gelatinase A), the active form of MMP9 (gelatinase B), and pro-MMP9 (progelatinase B) are not detected. ⋯ Furthermore LU105 did not modify the amount of TIMP2 expressed in culture by controls or by gingival fibroblasts derived from inflamed tissue. TIMP1 and MMP1 significantly decreased when LU105 was added in the culture media of gingival fibroblasts derived from inflamed tissue compared with control fibroblasts. Thus LU105 seems to offer an opportunity to restore a correct balance between MMP2, MMP9, MMP1, and their natural inhibitors, i.e., TIMP1 and TIMP2 in human inflamed gingiva.
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To comprehend the results of a randomised controlled trial (RCT), readers must understand its design, conduct, analysis, and interpretation. That goal can be achieved only through total transparency from authors. Despite several decades of educational efforts, the reporting of RCTs needs improvement. ⋯ The diagram explicitly shows the number of participants, for each intervention group, included in the primary data analysis. Inclusion of these numbers allows the reader to judge whether the authors have done an intention- to-treat analysis. In sum, the CONSORT statement is intended to improve the reporting of an RCT, enabling readers to understand a trial's conduct and to assess the validity of its results.
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Clinical Trial
Treatment of recurrent temporomandibular joint dislocation with intramuscular botulinum toxin injection.
Recurrent dislocation of the mandibular condyle poses a difficult problem for affected patients. In the course of time, dislocations often become more frequent and more difficult to avoid. Even with good patient compliance, conservative treatment is often not sufficient. ⋯ Injections were given on a 3-month basis in order to have a sustained effect. Within the study period of 6 months to 3 years, only two of the 21 patients suffered further dislocation. There were no side effects recorded as a result of treatment.
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The aim of the present study was to evaluate the pressure pain threshold (PPT), tactile threshold (TT) and pain intensity as measured on a Visual Analogue Scale (VAS) in patients with pain in the orofacial region. Twenty-six patients with myogenous pain (7 ss), myogenous and capsular pain (11 ss) or neuropathic pain (8 ss) participated in the study. At baseline, the PPT was evaluated using an algometer and the TT using von Frey hairs. ⋯ In patients with myogenous and capsular pain, as well as in patients with neuropathic pain, the PPT increased after active treatment, while it decreased in the group with pure myogenous pain. The VAS score decreased in all groups. Regarding psychological profiles, a variety of characteristics were observed and the scale for sleeping problems was especially elevated in a majority of the patients.
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Randomized Controlled Trial Comparative Study Clinical Trial
Clinical controlled study on plaque and gingivitis reduction under long-term use of low-dose chlorhexidine solutions in a population exhibiting good oral hygiene.
The aim of this randomized, parallel-group, placebo-controlled, blind clinical study was to examine the dental plaque and the gingivitis inhibitory effects of two low-dose 0.06% chlorhexidine (CHX) preparations in comparison to a commercially available 0.1% CHX solution, an amine fluoride/stannous fluoride (ASF) solution and a water control as an adjunct to the daily mechanical oral-hygiene measures. After prophylaxis, 81 medical students performed their tooth cleaning and were asked to rinse for 30 s, according to the instructions given by the manufacturers with the assigned amount of the following solutions: once daily 10 ml ASF 250 ppm or twice daily each 10 ml CHX 0.06% with fluoride, 10 ml CHX 0.06% without fluoride, 15 ml CHX 0.1% or 100 ml tap water. The plaque index (PlI), the gingival index (GI) and the discoloration index (DI) were taken at day -14 and months (M) 0, 1, 2, 3 and 6. ⋯ In the GI a significant difference between the control and 0.1 % CHX was found at M3 and at M6. If a further decrease in the GI is wanted, a minimum concentration of 0.1% CHX for long-term use in association with habitual cleaning is needed, which, however, should be limited to special patients. If maintaining clinical health is the goal, the other solutions are a good alternative to 0.1% CHX because they exhibit less staining.