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Canadian Journal of Dental Hygiene :... Oct 2021Dental caries is still one of the most prevalent diseases worldwide. Research has shown that fluoride has a role in caries prevention. For many reasons there are... (Meta-Analysis)
Meta-Analysis
UNLABELLED
Dental caries is still one of the most prevalent diseases worldwide. Research has shown that fluoride has a role in caries prevention. For many reasons there are concerns about young children using fluoride-containing oral care products. Consequently, there is a need to identify effective fluoride-free products. A large body of literature now exists on the use of biomimetic hydroxyapatite (HAP) as an active ingredient in oral care products to combat caries.
AIM
To conduct a systematic review of the clinical evidence of the effects of HAP-based fluoride-free oral care products in caries reduction and conduct a meta-analysis of available randomized clinical trials (RCTs).
METHODS
Using the PICO question "In individuals of all ages (P), do fluoride-free oral care products containing HAP as the anti-caries agent (I), compared to products with fluoride or without caries control products (C), reduce the risk of dental caries (O)?" Ovid MEDLINE (PubMed), Scopus, EMBASE, and Web of Science databases were searched using the following keywords: apatite, hydroxyapatite, caries, dental decay, dentin(e), enamel, toothpaste, dentifrice, mouthwash, gels, biofilm, (dental) plaque, ero(de, ded, sion), (de, re)mineral(ise, ized, ised, ization, isation). Reviews, tooth whitening, tooth sensitivity, and in vitro studies were excluded. PRISMA was used for the search and GRADE was used to assess quality. Clinical trials were subjected to the Cochrane Risk of Bias assessment followed by meta-analysis.
RESULTS
291 studies were retrieved; 22 were suitable for systematic review, 5 were clinical caries trials and 4 were RCTs. A meta-analysis of 3 RCTs was possible showing HAP provided 17% protection against caries. The other 17 trials had simpler proxy outcomes for anticaries effects. Some trials showed non-inferior performance of HAP products compared to those with fluoride.
CONCLUSION
There is good evidence that hydroxyapatite in oral care products in the absence of fluoride effectively reduces caries.
Topics: Biomimetics; Child; Child, Preschool; Dental Caries; Dental Caries Susceptibility; Durapatite; Fluorides; Humans
PubMed: 34925515
DOI: No ID Found -
Biomimetics (Basel, Switzerland) Aug 2023Additive manufacturing (three-dimensional (3D) printing) has become a leading manufacturing technique in dentistry due to its various advantages. However, its potential... (Review)
Review
BACKGROUND
Additive manufacturing (three-dimensional (3D) printing) has become a leading manufacturing technique in dentistry due to its various advantages. However, its potential applications for dental ceramics are still being explored. Zirconia, among ceramics, has increasing popularity and applications in dentistry mostly due to its excellent properties. Although subtractive manufacturing (3D milling) is considered the most advanced technology for the fabrication of zirconia restorations, certain disadvantages are associated with it.
METHODS
A systematic review was piloted to compare the clinical performance of zirconium crowns that were fabricated using three-dimensional (3D) milling and 3D printing. A meta-analysis was performed, and studies published up to November 2022 were identified. The terms searched were "Zirconium crowns", "3D printing", "CAD/CAM" (Computer-Aided Design and Computer-Aided Manufacturing), "Milling", "dental crowns", and "3D milling". The characteristics that were compared were the year in which the study was published, study design, age of the patient, country, the number of crowns, the type of crown fabrication, marginal integrity, caries status, and outcomes. Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines were used to structure this systematic review. Out of eleven hundred and fifty titles identified after a primary search, nine articles were included in the quantitative analysis. The research question based on PICO/PECO (Participant, Intervention/exposure, Comparison, and Outcome) was "Do 3D-printed and milled (P) zirconia crowns and FDPs (I) have a better survival rate (O) when conventional prosthesis is also an option (C)"? The data collected were tabulated and compared, and the risk of bias and meta-analysis were later performed. Only nine articles (clinical research) were selected for the study. Since there were no clinical studies on the 3D printing of zirconium crowns, six in vitro studies were considered for the comparison. Zirconium crowns in the milling group had an average minimum follow-up of 6 months.
RESULTS
A moderate risk of bias was found, and survival was significant. A high heterogeneity level was noted among the studies. Marginal integrity, periodontal status, and survival rate were high. Linear regression depicted no statistical correlation between the type of cement used and the survival rate.
CONCLUSIONS
It can be concluded that the milled crowns had a higher performance and satisfactory clinical survival.
PubMed: 37754145
DOI: 10.3390/biomimetics8050394 -
International Journal of Colorectal... Feb 2023Postoperative complications after a colonic and rectal surgery are of significant concern to the surgical community. Although there are different techniques to perform... (Meta-Analysis)
Meta-Analysis Review
PURPOSE
Postoperative complications after a colonic and rectal surgery are of significant concern to the surgical community. Although there are different techniques to perform anastomosis (i.e., handsewn, stapled, or compression), there is still no consensus on which technique provides the least number of postoperative problems. The objective of this study is to compare the different anastomotic techniques regarding the occurrence or duration of postoperative outcomes such as anastomotic dehiscence, mortality, reoperation, bleeding and stricture (as primary outcomes), and wound infection, intra-abdominal abscess, duration of surgery, and hospital stay (as secondary outcomes).
METHODS
Clinical trials published between January 1, 2010, and December 31, 2021, reporting anastomotic complications with any of the anastomotic technique were identified using the MEDLINE database. Only articles that clearly defined the anastomotic technique used, and report at least two of the outcomes defined were included.
RESULTS
This meta-analysis included 16 studies whose differences were related to the need of reoperation (p < 0.01) and the duration of surgery (p = 0.02), while for the anastomotic dehiscence, mortality, bleeding, stricture, wound infection, intra-abdominal abscess, and hospital stay, no significant differences were found. Compression anastomosis reported the lowest reoperation rate (3.64%) and the handsewn anastomosis the highest (9.49%). Despite this, more time to perform the surgery was required in compression anastomosis (183.47 min), with the handsewn being the fastest technique (139.92 min).
CONCLUSIONS
The evidence found was not sufficient to demonstrate which technique is most suitable to perform colonic and rectal anastomosis, since the postoperative complications were similar between the handsewn, stapled, or compression techniques.
Topics: Humans; Surgical Stapling; Suture Techniques; Constriction, Pathologic; Abscess; Anastomosis, Surgical; Postoperative Complications; Abdominal Abscess; Intraabdominal Infections
PubMed: 36814011
DOI: 10.1007/s00384-023-04328-6 -
Biomimetics (Basel, Switzerland) Jan 2023The purpose of this systematic review is to determine how various innovative non-suture silk and silk-containing products are being used in clinical practice, and... (Review)
Review
AIMS
The purpose of this systematic review is to determine how various innovative non-suture silk and silk-containing products are being used in clinical practice, and compare patient outcomes following their use.
METHODS
A systematic review of PubMed, Web of Science, and Cochrane was completed. A qualitative synthesis of all included studies was then performed.
RESULTS
Our electronic search identified 868 silk-related publications, which yielded 32 studies for full-text review. After exclusion, nine studies from 2011 to 2018 were included for qualitative analysis. A total of 346 patients were included which consisted of 37 males and 309 females. The mean age range was between 18-79 years old. The follow-up among studies ranged between one to twenty-nine months. Three studies addressed the application of silk in wound dressings, one on the topical application of silk-derived products, one on silk-derived scaffold in breast reconstruction, and three on silk underwear as adjunct for the treatment of gynecological conditions. All studies showed good outcomes alone or in comparison to controls.
CONCLUSION
This systematic review concludes that silk products' structural, immune, and wound-healing modulating properties are advantageous clinical assets. Nevertheless, more studies are needed to strengthen and establish the benefit of those products.
PubMed: 36810376
DOI: 10.3390/biomimetics8010045 -
International Journal of Clinical... 2022This study aimed at systematically reviewing the clinical success of repaired iatrogenic perforations using different materials in primary teeth. (Review)
Review
AIM
This study aimed at systematically reviewing the clinical success of repaired iatrogenic perforations using different materials in primary teeth.
OBJECTIVES
To compare mineral trioxide aggregate (MTA) with other biomaterials for the repair of iatrogenic perforations in primary molars during endodontic procedures.
SEARCH METHODS
A comprehensive literature search was conducted by using three electronic databases (PubMed, Cochrane Library, Google Scholar) to identify articles that evaluated the different intervention materials for the repair of iatrogenic perforation in primary molars. Selection criteria: The articles reporting perforation repair in primary molars having clinical and radiographic success, as their outcome measures with a follow-up period of at least 1 year were included in this review. Studies and case reports with insufficient or unstated follow-up periods, in vitro, and animal studies were excluded.
DATA COLLECTION AND ANALYSIS
Two reviewers (SM, LM) independently screened all titles and abstracts according to the inclusion and exclusion criteria. Full texts of the selected studies were obtained for the second stage screening. The consensus was achieved by discussion with the third reviewer (AJ). Data extraction included study design, sample size, age of the patient, year of the study, follow-up period, outcome assessment criteria, material for repair, and success and failure.
REVIEW RESULTS
A total of seven publications were included in this review. Of which, one was case series, three were case reports, and three were interventional studies. The combined success rate of MTA (80.55%) was inferior to other materials-premixed bioceramics, Atelocollagen, and calcium-enriched mixture (96.07%); the same being statistically significant ( = 0.011).
CONCLUSION
Within the limitations of our study, it can be concluded that newer biomimetic materials are superior to MTA for iatrogenic perforation repair in primary molars in terms of clinical success.
CLINICAL SIGNIFICANCE
This paper is a first-of-its-kind investigation comparing different materials used in the repair of perforations in primary molars. It can be a foundation for further research on the topic. In absence of any available guidelines, the above study can be applied in clinical situations with appropriate judgment and caution.
HOW TO CITE THIS ARTICLE
Mungekar-Markandey S, Mistry L, Jawdekar A. Clinical Success of Iatrogenic Perforation Repair Using Mineral Trioxide Aggregate and Other Materials in Primary Molars: A Systematic Review and Meta-analysis. Int J Clin Pediatr Dent 2022;15(5):610-616.
PubMed: 36865717
DOI: 10.5005/jp-journals-10005-2038 -
Remineralization of Dentinal Lesions Using Biomimetic Agents: A Systematic Review and Meta-Analysis.Biomimetics (Basel, Switzerland) Apr 2023The objective of this article was to systematically provide an up-to-date review on the different methods of remineralizing human dentine using different biomimetic... (Review)
Review
The objective of this article was to systematically provide an up-to-date review on the different methods of remineralizing human dentine using different biomimetic agents. The authors performed a systematic search within PubMed, Scopus, and Web of Science in addition to the grey literature in Google Scholar using MeSH terms. The PICO question was P: human teeth dentinal sections; I: application of biomimetic remineralizing agents; C: other non-biomimetic approaches; O: extent of remineralization and physical properties of remineralized dentine. The initially identified studies were screened for titles and abstracts. Non-English articles, reviews, animal studies, studies involving the resin-dentine interface, and other irrelevant articles were then excluded. The other remaining full-text articles were retrieved. Bibliographies of the remaining articles were searched for relevant studies that could be included. A total of 4741 articles were found, and finally, 39 full-text articles were incorporated in the current systematic review. From these, twenty-six research studies used non-collagenous protein (NCP) analogs to biomineralize dentine, six studies used bioactive materials derived from natural sources, six studies used zinc hydroxyapatite, and one study used amelogenin peptide to induce hydroxyapatite formation on the surface of demineralized dentine. Additive effects of triclosan and epigenin were assessed when combined with commonly available NCPs. Overall, a moderate risk of bias was observed and, hence, the findings of the included studies could be acceptable. A meta-analysis of some similar studies was performed to assess the depth of remineralization and elastic modulus. Despite having high heterogeneity (I > 90), all the studies showed a significant improvement in biomimetic remineralization efficacy as compared to the control. All the included studies carried out a functional remineralization assessment and found a 90-98% efficacy in the extent of remineralization while the elastic modulus reached 88.78 ± 8.35 GPa, which is close to natural dentine. It is pertinent to note the limitations of these studies that have been carried out in vitro under controlled settings, which lack the effects of a natural oral environment. To conclude, the authors suggest that the biomimetic remineralization of dentine using NCP analogs, bioactive materials, and natural products carries significant potential in treating dentinal lesions; however, more long-term studies are needed to assess their clinical applications in vivo.
PubMed: 37092411
DOI: 10.3390/biomimetics8020159 -
BMC Medicine Jul 2016Bone tissue engineering and the research surrounding peptides has expanded significantly over the last few decades. Several peptides have been shown to support and... (Review)
Review
BACKGROUND
Bone tissue engineering and the research surrounding peptides has expanded significantly over the last few decades. Several peptides have been shown to support and stimulate the bone healing response and have been proposed as therapeutic vehicles for clinical use. The aim of this comprehensive review is to present the clinical and experimental studies analysing the potential role of peptides for bone healing and bone regeneration.
METHODS
A systematic review according to PRISMA guidelines was conducted. Articles presenting peptides capable of exerting an upregulatory effect on osteoprogenitor cells and bone healing were included in the study.
RESULTS
Based on the available literature, a significant amount of experimental in vitro and in vivo evidence exists. Several peptides were found to upregulate the bone healing response in experimental models and could act as potential candidates for future clinical applications. However, from the available peptides that reached the level of clinical trials, the presented results are limited.
CONCLUSION
Further research is desirable to shed more light into the processes governing the osteoprogenitor cellular responses. With further advances in the field of biomimetic materials and scaffolds, new treatment modalities for bone repair will emerge.
Topics: Animals; Bone Regeneration; Bone and Bones; Fracture Healing; Humans; Peptides; Tissue Engineering
PubMed: 27400961
DOI: 10.1186/s12916-016-0646-y -
Frontiers in Bioengineering and... 2020Research in cell biology greatly relies on cell-based assays and models that facilitate the investigation and understanding of specific biological events and processes...
Research in cell biology greatly relies on cell-based assays and models that facilitate the investigation and understanding of specific biological events and processes under different conditions. The quality of such experimental models and particularly the level at which they represent cell behavior in the native tissue, is of critical importance for our understanding of cell interactions within tissues and organs. Conventionally, models are based on experimental manipulation of mammalian cells, grown as monolayers on flat, two-dimensional (2D) substrates. Despite the amazing progress and discoveries achieved with flat biology models, our ability to translate biological insights has been limited, since the 2D environment does not reflect the physiological behavior of cells in real tissues. Advances in 3D cell biology and engineering have led to the development of a new generation of cell culture formats that can better recapitulate the microenvironment, allowing us to examine cells and their interactions in a more biomimetic context. Modern biomedical research has at its disposal novel technological approaches that promote development of more sophisticated and robust tissue engineering models, including scaffold- or hydrogel-based formats, organotypic cultures, and organs-on-chips. Even though such systems are necessarily simplified to capture a particular range of physiology, their ability to model specific processes of human biology is greatly valued for their potential to close the gap between conventional animal studies and human (patho-) physiology. Here, we review recent advances in 3D biomimetic cultures, focusing on the technological bricks available to develop more physiologically relevant models of human tissues. By highlighting applications and examples of several physiological and disease models, we identify the limitations and challenges which the field needs to address in order to more effectively incorporate synthetic biomimetic culture platforms into biomedical research.
PubMed: 33585419
DOI: 10.3389/fbioe.2020.620962 -
Biomimetics (Basel, Switzerland) Dec 2023Feature selection is becoming a relevant problem within the field of machine learning. The feature selection problem focuses on the selection of the small, necessary,... (Review)
Review
Feature selection is becoming a relevant problem within the field of machine learning. The feature selection problem focuses on the selection of the small, necessary, and sufficient subset of features that represent the general set of features, eliminating redundant and irrelevant information. Given the importance of the topic, in recent years there has been a boom in the study of the problem, generating a large number of related investigations. Given this, this work analyzes 161 articles published between 2019 and 2023 (20 April 2023), emphasizing the formulation of the problem and performance measures, and proposing classifications for the objective functions and evaluation metrics. Furthermore, an in-depth description and analysis of metaheuristics, benchmark datasets, and practical real-world applications are presented. Finally, in light of recent advances, this review paper provides future research opportunities.
PubMed: 38248583
DOI: 10.3390/biomimetics9010009 -
Tissue Engineering and Regenerative... Oct 2023Due to its high water content and biomimetic properties simulating extracellular matrix (ECM), hydrogels have been used as preferred cell culture and delivery systems.... (Review)
Review
BACKGROUND
Due to its high water content and biomimetic properties simulating extracellular matrix (ECM), hydrogels have been used as preferred cell culture and delivery systems. Similarly, cell-loaded hydrogels can be easily injected into target areas in a minimally invasive manner, minimizing surgical trauma, adapting to irregular shaped defects, and benefiting patients. In this study, we systematically reviewed multiple studies on hydrogel-based bone defect research and briefly summarized the progress of injectable and cell-loaded hydrogels in bone defect repair.
METHODS
A systematic search was conducted in the PubMed and Web of Science databases using selected search terms.
RESULTS
Initially, 185 articles were retrieved from the databases. After full-text screening based on inclusion and exclusion criteria, 26 articles were included in this systematic review. Data collected from each study included culture model, seed cell type and origin, cell concentration, scaffold material, scaffold shape, experimental animal and site, bioactive agents, and binding method. This injectable and cell-loaded hydrogel shows certain feasibility in bone tissue engineering applications.
CONCLUSION
Injectable and cell-loaded hydrogels have been widely applied in bone tissue engineering research. The future direction of bone tissue engineering for bone defect treatment involves the use of new hydrogel materials and biochemical stimulation.
Topics: Animals; Humans; Hydrogels; Tissue Engineering; Bone and Bones; Extracellular Matrix; Cell Culture Techniques
PubMed: 37563482
DOI: 10.1007/s13770-023-00569-2