1,720,995 research outputs found
Bond strength to radicular dentin of two experimental luting cements
Full text linkAim The aim of this study was to test two different of experimental cements based on two types of polymerization techniques comparing them with one already well known in the market. Materials and methods Thirty intact central incisors, extracted for periodontal reasons, were selected and endodontically treated, then were randomly divided into 3 groups of 10 samples: Group 1, light cured composite experimental material with self-etch adhesive and dual polymerization activator; Group 2, dual experimental core build-up with self-etch adhesive and dual-polymer activator; Group 3 (control group), dual cement with self-etch adhesive and dual polymerization activator. One fiber post was luted into the root canal strictly following manufacturer’s instructions. Each sample was cut in slices in order to perform the push-out bond strength test with a testing machine. To express the bond strength in MegaPascals (MPa), the breaking load recorded in Newton (N) was divided by the area of the bonded interface (A) in mm2. The area of the bond interface was calculated as the area of the surface of a truncated cone using the formula: A = π (R + r) [h2 + (Rr) 2] 1/2, where R represents the major radius of the coronal post, r represents the minor radius of the apical post and h is the thickness of the slice in millimeters. The diameters and thickness of the slice were measured individually using a digital caliper with 0.01 mm precision. After the test, each slide was observed to detect the type of failure and classified as adhesive between cement and dentin (AD); adhesive between the cement and the post (AP); fracture of the sample, cohesive inside the post and dentin (FR); cohesive in cement (CC); mixed (M). Results Group 2 recorded the highest values of adhesion strength, group 1 the lowest. There were no statistically significant differences among groups 1 and 2 and controls. The most common failure mode was the mixed one and the less frequent was the adhesive type between the post and the cement. Conclusions Within the limitations of this study, it can be concluded that the bond strength of experimental resin cements is comparable to that of a cement marketed by the same manufacturer, used here as a control and well known in the market
Efficacy of enamel derivatives to improve keratinized tissue as adjunct to coverage of gingival recessions: A systematic review and meta-analysis
No full textBackground: The systematic review was designed to answer the following focused question: Are enamel matrix derivatives able to improve the quantity of keratinized tissue (KT) around natural dentition in patients with recessions defects after their treatment with periodontal plastic procedures? Methods: Only Randomized Clinical Trials (RCT) in English language evaluating root coverage procedures in combination with enamel matrix derivatives (commercially known as Emdogain®-EMD), with at least 10 subjects and a minimum duration of six months, were included. The search was applied to PUBMED and SCOPUS and it consists of a combination of MeSH terms and free text words (from January 2000 to June 2019). Risk of bias in individual studies and across studies was also evaluated. Results: After the full text analysis and the exclusion of further 18 articles, 12 articles were finally included. In total 639 recessions were treated (334 tests and 305 control). The recessions defects were classified according to the classification of Miller (Class I, II, III, IV). Only one trial included Miller Class III recessions (7 in total). Enamel matrix derivatives were applied in conjunction with Coronally Advanced Flap (CAF), Coronally Advanced Flap + Sub Epithelial Connective Tissue Graft (CAF + CTG), Semilunar Flap (SF). For the group CAF vs CAF + EMD the mean difference between the keratinized tissue gain in the two procedures was 0.40 mm (95% Confindence Interval Lower/Upper: 0.014-0.81) (p < 0.058); for the comparison CAF + CTG + EMD vs. CAF + CTG the mean difference between the two groups resulted in -0.06 mm (95% Confindence Interval Lower Upper -0.45 to 0.33) (p = 0.7603). Discussion: Randomized clinical trials included medium-low quality evidence. The application of Enamel Matrix Derivatives to surgical procedures aimed to cover gingival recessions does not add robust clinical benefit to conventional plastic procedure alone
Conclusions and consensus statements on periodontal health, policy and education in Europe: a call for action--consensus view 1. Consensus report of the 1st European Workshop on Periodontal Education
No full textRole of occlusion on fiber post restored teeth rehabilitation: A systematic review
Full text linkAim The restoration of root filled teeth is a challenge in dentistry. Many studies have assessed the role of the number of remaining walls, the influence of tooth location, post type, post cementation strategy and the type of final restoration. The aim of this review was to evaluate how many Randomized Clinical Trials (RCTs) take into account the role of occlusion in endodontically treated teeth (ETT) rehabilitation. Materials and methods RCTs for ETT restored with fiber post were searched for in Medline/PubMed and Cochrane Library. No time limitation was applied. Only papers written in English were considered. Results Of 43 full-text papers no one evaluated the topic of interest. Conclusions In the existing literature nothing could be found related to RCTs evaluating the role of occlusion on ETT with fiber posts rehabilitation
The role of occlusion on full mouth rehabilitations with adhesive partial crowns. A systematic review
Full text linkAim In the dental literature there are many studies about full mouth rehabilitation. They are mainly focused on the reestablishment of esthetics and function in edentulous patients, or in complex cases in which a multidisciplinary approach is needed. The aim of this study was to systematically review the role of occlusion reported in the literature when full mouth rehabilitations by adhesive partial crowns are made.Methods This report followed the PRISMA Statement. A database search in Medline/PubMed, Cochrane and Researchgate, in addition to other sources and manual searches was conducted, using appropriate key words to identify all kind of studies reporting on occlusion in full mouth rehabilitation with adhesive partial crowns. No language or time limitation was applied.Results Only three papers were selected but no randomized clinical trials were found.Conclusion No randomized clinical trial is available on full mouth rehabilitation with adhesive partial crowns and on the role of occlusion
Biological approaches to the development of novel periodontal therapies - Consensus of the Seventh European Workshop on Periodontology
No full textEfficacy of periodontal plastic procedures in the treatment of multiple gingival recessions
No full textOBJECTIVE:
To systematically review the efficacy of periodontal plastic procedures (PPP) in the treatment of multiple gingival recessions (MGR).
METHODS:
Randomized clinical trials (RCT) on MGR treatment with at least 6 months duration were identified through electronic databases and hand-searched journals. Primary outcomes were complete root coverage (CRC) and percentage of root coverage (PRC). Weighted means and forest plots were calculated for all PPP. Subgroup analysis was performed according to the type of flap. A Bayesian network meta-analysis (NM) on secondary outcomes was also performed.
RESULTS:
Nine trials including 208 subjects and 858 recessions were identified. CRC after PPP was 24-89%. Mean weighted PRC was 86.27% (95% CI 80.71-91.83; p < 0.01). Heterogeneity of the literature prevented inter-techniques comparison. Coronally advanced flap (CAF) shows the higher variability in terms of CRC. Modified CAF and tunnel approaches show higher level of CRC. The NM suggests that CAF plus graft showed the higher probability of being the best treatment.
CONCLUSIONS:
Limited evidence is available for MGR coverage. PPP are associated with high level of efficacy, in terms of PRC, and high variability of CRC. Indirect evidence indicates that CAF may benefit from newer variations of the technique and by the additional use of grafting
Change in clinical parameters after subgingival instrumentation for the treatment of periodontitis and timing of periodontal re-evaluation: A systematic review and meta-analysis
No full textAimTo evaluate the changes in periodontal parameters (reduction in probing pocket depth [PPD], gain in clinical attachment level [CAL] and reduction in full-mouth bleeding on probing [BoP]) after subgingival instrumentation of periodontal pockets at different time points in systemically healthy patients suffering from periodontitis.Materials and MethodsFour databases were searched for RCTs that carried out subgingival instrumentation in periodontal pockets and evaluated PPD at a minimum of two consecutive time points other than baseline. The analysis was conducted for both all pocket depths and stratified for initially shallow (4-5 mm) and deep (>= 6 mm) pockets and data were extracted for various time points, 1-2, 3-4 and 5-6 months. Weighted mean effects (WMEs) were calculated with 95% confidence interval (CI) and predictive intervals were calculated.ResultsTwenty-nine RCTs were identified, and all of them were included in the meta-analysis. The results showed that for both shallow and deep pockets there was a small though clinically meaningful change between 1- to 2-month and 3- to 4-month time points and between these and 5-6 months.ConclusionsIn systemically healthy patients, the greater part of reduction in PPD and gain in CAL occurs within the first 1-2 months after subgingival instrumentation. However, additional benefits in terms of pocket depth reduction occur beyond these early time points
Carie e parodontite apicale in pazienti con Malattie Infiammatorie Intestinali (IBD). Revisione sistematica con metanalisi
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