Biological Restoration Research Articles

Esthetic Recovery of Smile Using Composite Resin and “Biological Posts” and Crowns

The recovery of teeth that have been extensively destroyed by dental caries can be achieved through direct and indirect restorative procedures. This paper presents a case of the esthetic and functional recovery of permanent maxillary incisors with extensive dental caries in an adolescent patient through the use of a composite resin and "biological posts and crowns". A case report was drafted to describe the direct restoration of central maxillary incisors using composite resin and endodontic treatment of the lateral maxillary incisors, the construction of dentinal posts, the adaptation and cementing of the posts to the root canals, preparation and molding of crown portions, model construction, the choice of extracted teeth and the making and cementing of "biological crowns". The use of a composite resin and the cementing of "biological posts and crowns" reestablish dental esthetics and function. Biological restorations maintain all the characteristics of natural teeth and have a significant psychosocial impact on the patient's quality of life. However it should be stressed that this technique was only indicated in the present case after the determination of a significant improvement in oral hygiene.

Transport of Bacillus thuringiensis var. kurstaki from an Outdoor Release into Buildings: Pathways of Infiltration and a Rapid Method to Identify Contaminated Buildings

Understanding the fate and transport of biological agents into buildings will be critical to recovery and restoration efforts after a biological attack in an urban area. As part of the Interagency Biological Restoration Demonstration (IBRD), experiments were conducted in Fairfax County, VA, to study whether a biological agent can be expected to infiltrate into buildings following a wide-area release. Bacillus thuringiensis var. kurstaki is a common organic pesticide that has been sprayed in Fairfax County for a number of years to control the gypsy moth. Because the bacterium shares many physical and biological properties with Bacillus anthracis, the results from these studies can be extrapolated to a bioterrorist release. In 2009, samples were collected from inside buildings located immediately adjacent to a spray block. A combined probabilistic and targeted sampling strategy and modeling were conducted to provide insight into likely methods of infiltration. Both the simulations and the experimental results indicate sampling entryways and heating, ventilation, and air conditioning (HVAC) filters are reasonable methods for "ruling in" a building as contaminated. Following a biological attack, this method is likely to provide significant savings in time and labor compared to more rigorous, statistically based characterization. However, this method should never be used to "rule out," or clear, a building.

Adjustment of Payments for Ecological Benefits in Traditional Agricultural Areas: Case Study on SADO Island, Japan

To date, theories of eco—compensation and biological restoration have been popular, and some models in developed countries are treated as good examples. Here, we not only focus on Japan, but also pay more attention to challenges during this process. Based on a long—term field study on Sado Island, a less developed region in Japan, we attempt to describe how the government carries out environmental remediation towards the reintroduction of ibis (Species name) into the wild, and the conflict between ibis habitat restoration and farm management. We discuss the underlying reasons for this conflict and the negative effect on regional development. We follow policy improvements of the local government and related supplementary help carried out to fix the mismatch between the payment for ecological benefits and that lost by farmers in the pre—period. We conclude that the coordination of interest among different social groups is the key for success in ecological restoration and compensatory measures have to be made to meet the actual needs of the local groups. This case study in Japan can be applied to similar regions with poor environments and urgent environment restoration needs in China.

Environmental Reviews and Case Studies: Restoring a Salt Marsh in a Highly Urbanized Environment of New York City: The Alley Park Restoration Project

The success of urban salt marsh restoration depends upon an understanding of the local tidal regime and hydrologic conditions. Reference wetland characteristics can provide biological and physical restoration baselines for a restoration design through the use of techniques such as bio-benchmarking and geomorphologic assessment. Reference site vegetation can be used as indirect indicators of local tidal elevations and duration of flooding of each tidal zone. Reference sites can also provide landscape allometry to generate geomorphologic ratios that can be applied to the restoration site. Through the use of field measurements, aerial photographs, and GIS technology, relationships can be identified for tidal channel width, depth, diurnal tidal prism, and marsh area. Calculating a hydrologic budget for freshwater is critical to estimate salinity concentrations and their effect on the restoration wetland. This information, along with field measurements of salinity, can be used to predict salinity ranges result...

Immobilization of lead in a Korean military shooting range soil using eggshell waste: An integrated mechanistic approach

This study evaluated the effectiveness of eggshell and calcined eggshell on lead (Pb) immobilization in a shooting range soil. Destructive and non-destructive analytical techniques were employed to determine the mechanism of Pb immobilization. The 5% additions of eggshell and calcined eggshell significantly decreased the TCLP-Pb concentration by 68.8% due mainly to increasing soil pH. Eggshell and calcined-eggshell amendments decreased the exchangeable Pb fraction to ∼1% of the total Pb in the soil, while the carbonate-associated Pb fraction was increased to 40.0–47.1% at >15% application rates. The thermodynamic modeling on Pb speciation in the soil solution predicted the precipitation of Pb-hydroxide [Pb(OH)2] in soils amended with eggshell and calcined eggshell. The SEM-EDS, XAFS and elemental dot mapping revealed that Pb in soil amended with calcined eggshell was associated with Si and Ca, and may be immobilized by entrapping into calcium-silicate-hydrate. Comparatively, in the soil amended with eggshell, Pb was immobilized via formation of Pb-hydroxide or lanarkite [Pb2O(SO4)]. Applications of amendments increased activities of alkaline phosphatase up to 3.7 times greater than in the control soil. The use of eggshell amendments may have potential as an integrated remediation strategy that enables Pb immobilization and soil biological restoration in shooting range soils.

Esthetic-functional recovery of permanent posterior tooth using autogenous biological restoration

Occlusal morphology and difficult access for cleaning permanent molars result in the buildup of bacterial plaque and the development of caries. One method known as biological restoration was carried out. This technique known as biological restoration, has as main restorative material a fragment obtained from a duly donated extracted human tooth. This case report describes the restoration of an extensively decayed molar through the bonding of a fragment obtained from a third molar extracted from the patient himself. Biological restoration is a low-cost option that offers satisfactory aesthetic, morphological and functional results.The morphological/functional reestablishment of posterior teeth can be obtained through biological restoration, which allows the recovery of properties inherent to the dental structure, offers satisfactory aesthetic results and low cost.

Tooth Fragment Reattachment: An Esthetic, Biological Restoration

ABSTRACT Coronal fractures of the anterior teeth are a common form of dental trauma. If the original tooth fragment is retained following fracture, reattachment of the fractured fragment to the remaining tooth can provide better and long-lasting esthetics, improved function, a positive psychological response and is a faster and less complicated procedure. This paper reports on two coronal tooth fracture cases that were successfully treated using adhesive reattachment technique. How to cite this article Kararia N, Chaudhary A, Kararia V. Tooth Fragment Reattachment: An Esthetic, Biological Restoration. World J Dent 2012;3(1):91-94.

Rehabilitation of an extracted anterior tooth area using bondable reinforcement ribbon and the artificial tooth

Dental traumatic injuries are widespread in the population and are a frequent pathology among children and teenagers. Fiber-reinforced composite (FRC) bonded fixed dental prothesis have been used as an alternative to conventional metal-based or zirconia-based fixed restorations especially among young patients. As well as the bonding system, mechanical adaptation and the retention of the fiber frame and the grooves of the pontic are fundamental for the success of this type of adhesive restoration. The esthetic solution was the building of a biologic restoration using reinforced polyethylene fibers as an interim restoration for this case.

Biomaterial Selection for Tooth Regeneration

Biomaterials are native or synthetic polymers that act as carriers for drug delivery or scaffolds for tissue regeneration. When implanted in vivo, biomaterials should be nontoxic and exert intended functions. For tooth regeneration, biomaterials have primarily served as a scaffold for (1) transplanted stem cells and/or (2) recruitment of endogenous stem cells. This article critically synthesizes our knowledge of biomaterial use in tooth regeneration, including the selection of native and/or synthetic polymers, three-dimensional scaffold fabrication, stem cell transplantation, and stem cell homing. A tooth is a complex biological organ. Tooth loss represents the most common organ failure. Tooth regeneration encompasses not only regrowth of an entire tooth as an organ, but also biological restoration of individual components of the tooth including enamel, dentin, cementum, or dental pulp. Regeneration of tooth root represents perhaps more near-term opportunities than the regeneration of the whole tooth. In the adult, a tooth owes its biological vitality, arguably more, to the root than the crown. Biomaterials are indispensible for the regeneration of tooth root, tooth crown, dental pulp, or an entire tooth.

Challenges in Disposing of Anthrax Waste

Disasters often create large amounts of waste that must be managed as part of both immediate response and long-term recovery. While many federal, state, and local agencies have debris management plans, these plans often do not address chemical, biological, and radiological contamination. The Interagency Biological Restoration Demonstration's (IBRD) purpose was to holistically assess all aspects of an anthrax incident and assist in the development of a plan for long-term recovery. In the case of wide-area anthrax contamination and the follow-on response and recovery activities, a significant amount of material would require decontamination and disposal. Accordingly, IBRD facilitated the development of debris management plans to address contaminated waste through a series of interviews and workshops with local, state, and federal representatives. The outcome of these discussions was the identification of 3 primary topical areas that must be addressed: planning, unresolved research questions, and resolving regulatory issues.

Interagency Biological Restoration Demonstration (IBRD): A Collaborative Approach to Biological Incident Recovery

Following the terrorist attacks in 2001, much time and effort has been put toward improving catastrophic incident response. But recovery--the period following initial response that focuses on the long-term viability of the affected area--has received less attention. Recognizing the importance of being able to recover an area following a catastrophic incident, the Department of Defense, through its Defense Threat Reduction Agency (DTRA), and the Department of Homeland Security, through its Science and Technology Directorate (DHS S&T), created the Interagency Biological Restoration Demonstration (IBRD) program. IBRD was a 4-year program jointly managed and funded by DTRA and DHS S&T, the goal of which was to reduce the time and resources necessary to recover a wide urban area from an intentional release of Bacillus anthracis. Specific program objectives included understanding the social, economic, and operational interdependencies that affect recovery; establishing long-term coordination between the Departments of Defense and Homeland Security; developing strategic recovery/restoration plans; identifying and demonstrating technologies that support recovery; and exercising recovery activities and technology solutions. IBRD has made important first steps toward improving national preparedness in the area biological incident recovery. Specifically, IBRD has helped enhance the efficacy and efficiency of recovering large urban areas by developing consequence management guidance; identifying key S&T capabilities and integrating them with planning and guidance documents; and establishing key relationships across the federal interagency, federal-to-regional, civilian-to-military, and public-to-private stakeholders. Upon completion of IBRD in fall 2010, both DTRA and DHS S&T planned follow-on programs.

The Challenge of Determining the Need for Remediation Following a Wide-Area Biological Release

Recovering from a biological attack is a complex process requiring the successful resolution of numerous challenges. The Interagency Biological Restoration Demonstration program is one of the first multiagency efforts to develop strategies and tools that could be effective following a wide-area release of B. anthracis spores. Nevertheless, several key policy issues and associated science and technology issues still need to be addressed. For example, more refined risk assessment and management approaches are needed to help evaluate "true" public health risk. Once the risk is understood, that information can be considered along with the types of characterization activities deemed necessary to determine whether the cost and time of decontamination are actually warranted. This commentary offers 5 recommendations associated with decision making regarding decontamination and clearance options that should accompany a comprehensive risk analysis leading to more effective risk management decisions. It summarizes some of the most important technological gaps that still need to be addressed to help decision makers in their objective of reducing health risks to an acceptable level. The risk management approach described should enable decision makers to improve credibility and gain public acceptance, especially when an adequate science and technology base is available to support the required decisions.

Tooth regeneration: a revolution in stomatology and evolution in regenerative medicine

A tooth is a complex biological organ and consists of multiple tissues including the enamel, dentin, cementum and pulp. Tooth loss is the most common organ failure. Can a tooth be regenerated? Can adult stem cells be orchestrated to regenerate tooth structures such as the enamel, dentin, cementum and dental pulp, or even an entire tooth? If not, what are the therapeutically viable sources of stem cells for tooth regeneration? Do stem cells necessarily need to be taken out of the body, and manipulated ex vivo before they are transplanted for tooth regeneration? How can regenerated teeth be economically competitive with dental implants? Would it be possible to make regenerated teeth affordable by a large segment of the population worldwide? This review article explores existing and visionary approaches that address some of the above-mentioned questions. Tooth regeneration represents a revolution in stomatology as a shift in the paradigm from repair to regeneration: repair is by metal or artificial materials whereas regeneration is by biological restoration. Tooth regeneration is an extension of the concepts in the broad field of regenerative medicine to restore a tissue defect to its original form and function by biological substitutes.

Restaurações Biológicas em Dentes Decíduos: Revisão de Literatura

A problem commonly faced in pediatric dental clinic is the restoration of teeth severely destroyed by trauma or caries. However, the importance of preserving the integrity of primary dentition until the appropriate exfoliation time is well recognized. A biologic restoration technique using dental fragments obtained from extracted human teeth which had been previously sterilized and stored in a tooth bank. This review article examines biological restorations as to historical aspects, bank teeth, advantages and disadvantages, and operatory technique. We concluded that the use of biologic restorations resulted in clinical success as well as recovered function and esthetics, being an alternative to prosthodontic restoration for severely-destroyed primary teeth.

Microbial eco-physiological profiles to estimate the biological restoration of a trichloroethylene-contaminated soil

In the present study, the effectiveness of two plants, Medicago sativa L. and Dittrichia viscosa L., and a biostimulation method based on the use of an olive waste vermicompost, to restore the original quality of a trichloroethylene-contaminated soil was evaluated using eco-physiological profiles. These were designed in form of sun-ray plots by combining soil enzyme activities (dehydrogenase, alkaline phosphatase, β-glucosidase, urease and o-diphenol oxidase), bacterial population size via real-time PCR, Shannon diversity index values for PCR-denaturing gradient gel electrophoresis profiles, and genetic diversity θ (π) of the sequenced Proteobacteria of the different treatments. The eco-physiological profiles coupling biochemical and molecular parameters could be used as a valuable index for monitoring the success of a restoration scheme, estimating the quality of both contaminated and restored soils. Particularly remarkable was the interaction between vermicompost and D. viscosa, the only treatment that improved biochemical and microbiological restoration in such a way that an eco-physiological profile greater than that of the uncontaminated soil was noticed. The results showed the need to combine chemical analysis and microbiological measurements for evaluating the efficacy of soil remediation techniques.

“Biological Restoration”: Root Canal and Coronal Reconstruction

Anterior tooth fracture, as a result of traumatic injuries, frequently occurs in dentistry. Proper reconstruction of extensively damaged teeth can be achieved through the fragment reattachment procedure known as "Biological Restoration." This case report refers to the esthetics and functional recovery of extensively damaged central maxillary incisors through the preparation and adhesive cementation of "Biological Posts and Crowns" in a young patient. Both biological posts and crowns--post and dental fragment obtained through natural, extracted teeth from another individual--represent a low-cost option and alternative technique for the morphofunctional recovery of extensively damaged anterior teeth. The biological restorations are an alternative technique for reconstruction of extensively damaged teeth that provides highly functional and esthetic outcomes.

COMMENTARY. “biological restoration”: root canal and coronal reconstruction

COMMENTARY. “<scp>biological restoration</scp>”: <scp>root canal and coronal reconstruction</scp>

Highlights &amp; Happenings

Biosecurity and Bioterrorism: Biodefense Strategy, Practice, and ScienceVol. 8, No. 1 Highlights & HappeningsPublished Online:15 Mar 2010https://doi.org/10.1089/bsp.2010.0202AboutSectionsView articleView Full TextPDF/EPUB ToolsPermissionsDownload CitationsTrack CitationsAdd to favorites Back To Publication ShareShare onFacebookTwitterLinked InRedditEmail View articleAbstractHighlights & Happenings provides brief, informative updates on important events and newsworthy items related to biosecurity and bioterrorism. It covers a broad array of topics, including, for example, new advances in bioresearch that could affect national security, the status of biopreparedness and response, emerging legal issues affecting vaccine and other countermeasure development and delivery, and noteworthy meetings, conferences, and reports. Readers may submit items of interest to the column's editor, Crystal Franco, through the Journal's editorial office at jfox@upmc-biosecurity.org.FiguresReferencesRelatedDetailsCited byVeterans Health Administration’s Disaster Emergency Medical Personnel System (DEMPS) Training Evaluation: Potential Implications for Disaster Health Care Volunteers20 February 2018 | Disaster Medicine and Public Health Preparedness, Vol. 12, No. 06Interagency Biological Restoration Demonstration (IBRD): A Collaborative Approach to Biological Incident Recovery Katie Crockett1 September 2011 | Biosecurity and Bioterrorism: Biodefense Strategy, Practice, and Science, Vol. 9, No. 3 Volume 8Issue 1Mar 2010 InformationCopyright 2010, Mary Ann Liebert, Inc.To cite this article:Biosecurity and Bioterrorism: Biodefense Strategy, Practice, and Science.Mar 2010.1-8.http://doi.org/10.1089/bsp.2010.0202Published in Volume: 8 Issue 1: March 15, 2010PDF download

Review of "The Biological Restoration of Central Nervous System Architecture and Function: Part 1"

Review of "The Biological Restoration of Central Nervous System Architecture and Function: Part 1"

Common, Academic and Professional Knowledge of Human Tooth Bank

Objective: To evaluate the knowledge of laymen, undergraduate dental students and dentists of Human Tooth Bank (HTB). Methods: Observational study with non-probabilistic sample. One-hundred-and-fifty subjects (50 dentists, 50 undergraduate dental students and 50 laymen) were interviewed about their knowledge of donation of organs, valuing of the tooth as an organ, HTB, the use and origin of teeth used in dental schools and acceptance of biological restorations. Results: As much as 97.6% of the interviewees were favorable to organ donation, but only 48% declared themselves as organ donors. The tooth was considered an organ by 94% of the dentists, 90% of the students and 54% of the laymen. During the graduation course, 90% of the dentists and 86% of the undergraduate students confirmed the use of human teeth obtained from dental offices or cemeteries. For improvement of research and teaching purposes, 94% of the students and dentists considered important the implementation of HTBs; however, only 2% of the students, 6% of the laymen and 28% of the dentists declared being familiar with a HTB. Most of the interviewees (90%) were favorable to the donation of teeth to HTBs, but only 44% of them would accept a biological restoration, alleging “repulsion” and the existence of alternative restorative materials. Conclusion: Most interviewed individuals were favorable to tooth donation to a HTB, but ignored its existence as well as the ethical and biosecurity guidelines regulating the maintenance of private tooth collections.