Tissue Conditioners Soft Lining Materials Health And Social Care Essay

Tissue Conditi wizrs rise-situated Lining Materials Health And Social Cargon EssayAs a briefing history of the home plate facing materials, we can ascertain that in 1942, Matthews introduced plasticized polyvinylchloride as one of the first flaccid lining materials apply with acrylic resin plates (Sultana, 1991) then Lammie Storer published a summary of observations on different soft plateful materials and classified the processed resilient materials as follows. (1) natural rubber, (2) polyvinylchloride, (3) polyvinylacetae, (4) methyl methacrylate copolymer, (5) silicone (Lammie Storer, 1958). Furthermore, they stated that this material became big(p) due to loss of plasticiser later several months, and became stained and cracked in the mouth.However, we tend to watch the composition and uses of both interweave conditioners and soft lining materials in prosthetic dentistry. Basically, Tissue conditioners composed of polyethylmethacrylate and garland of aromatic ester and ethyl alcohol and they ar found in three components system polymer ( powderise), monomer (liquid) and dibutyl phthalate as plasticizer flow control (liquid) when mixed together a gel is formed (Braden M 1970). The major uses of these create from raw material conditioners materials are wind treatment, temporary obturator, baseplate stabilization, to diagnose the outcome of resilient liners, liners in surgical splints, trial denture base and as a functional view material (Nallaswamy D. 2003).Tissue treatment the advantage of utilise a thread conditioner is to prepare the selected oral structure to withstand all the stress from the prosthesis and to keep the residual ridge. It is also utilise to heal irritated hyperemic interweaves before denture fabrication.Temporary obturator wind conditioners can be added as a temporary obturator over the existing complete or partial(p) denture and this can be done directly in the month or indirectly after an impression of surgical area has been made.Stabilization of baseplate and surgical splints or stents when tracks are present on an edentulous cast, an acrylic temporary denture base cannot be used as it may get locked into the undercut and break the cast during removal. In this case weave conditioner may be used to stabilize the character base and prevent breakage of the cast.Adjunct to an impression or as a final impression material when it is difficult to determine the extent of the denture base due to movable oral structure, tissue conditioner can be used to record the extensions of the denture in a dynamic form that forget later help in preparing an impression tray for the final impression.To diagnose the outcome of resilient liners patient with well-constructed denture sometimes develop chronic soreness and find it difficult to wear it comfortably. Tissue conditioners can be used to determine if this problem will be resolved with the use of a resilient liner. (Nallaswamy D, 2003).Commercially, in that respect are a wide range of tissue conditioner products, for example, GC tissue conditioner and Visco-gel and more but here we will compare between these 2 onlyFirstly, GC- tissue conditioner is composed of Polyethylmethacrylate (powder), methacrylate monomer (liquid) and dibutyl sebacate (plasticizer). Manufacturer claims that using of dibutyl sebacate as plasticizer instead of the conventional dibutyl phthalate has a merit of not being harmful to the human ductless gland system. However, it is suitable for conditioning and relieving tissue (for example when there are areas of inflammation or pressure points on the inflamed alveolar ridge), but also for temporary soft relining of partial and complete dentures as well as functional impressions to fabricate new dentures or restore existing ones, for immediate dentures and as an impermanent solution for direct loading situations in implantology. It is manufactured by GC EUROPE, Belgium (www.gceurope.com).On the other hand, V isco-gel tissue conditioner is composed of Polyethyl methacrylate (powder), Phthalyl butyl glycolate, Ethanol (liquid). It is can be used prior to denture replacement, extension or rebasing, tissue conditioner where the denture-bearing tissues have become disturbed by either denture trauma or infection, temporary lining immediately after extraction or oral surgery, temporary soft liner when normal dentures are not tolerated, particularly for patients with impairment of general health and as functional impression material in post-operative cases or when ill-fitting dentures require replacement or rebasing. Visco-gel is manufactured by DENTSPLY DeTrey GmbH, Germany (www.dentsply.com).Regardless the trade, the following steps should be considered while applying a tissue conditioner, first, tissue part of the denture base, which crosses an undercut, should be reduced then the tissue surface of the denture, which covers the crest of the ridge, should be reduced by 1 mm to allow sufficien t mode for placement of the tissue conditioner (Nallaswamy D, 2003).Soft lining material is the second part of this review and here it is politic to understand the dissimilitude between the tissue conditioner and the soft lining material. The International Organization for Standardization (ISO) has issued two international standards related to liner materials (ISO 10139-11991) first, lining materials for obliterable dentures-Part 1 short-term materials and soft lining materials for removable dentures (ISO, 1991) and the second, lining materials for removable dentures-Part 2 materials for long-term use (ISO, 1999). A short-term liner is one that is used intraorally for up to 30 days. A long-term liner is one that maintains softness and tractileity for more than 30 days (Garcia Jones, 2004). Practically, the ISO is differentiating between the temporary and the permanent soft ling material but theoretically, we can find that tissue conditioners can be used for more than 30 days de pends on the loss of the plasticizer. Moreover, tissue conditioner and soft lining have been used for the same purpose clinically. So then, what is the difference? Viscosity is that difference so whenever the material is with low viscosity and flow easily you can use it as a tissue conditioner while material with high viscosity is indicated to be used as a soft liner. There are two groups of soft lining material the first is the acrylic resin-based liner which consists of powder and liquid components. The powder has poly (ethyl or methyl) methacrylate, and sometimes copolymers, while the liquid contains methyl methacrylate monomer and plasticizers that are added to lower the grump transition temperature. The distribution of the large plasticizer molecules minimizes entanglement of polymer chains, which allows individual chains to slide by one another, keeping the liner from richly seasoning. The liquids used do not contain acrylic monomers (Craig Gibbons, 1961 Anusavice, 2003). The second slip of these soft lining materials is the silicone denture liners which are basically polymers of dimethylsiloxane. Poly(dimethylsiloxane) is a viscous liquid, which can be cross-linked to give rubber a good elastic property. The cross-linking agent is usually an alkyl-silane (silicate) and the reaction is catalysed by an organo-metal brininess such as tinoctoate or benzoyl peroxide (McCabe, 1976). Silicones are not dependent on leachable plasticizers and remain elastic for longer periods of time (Anusavice, 2003 Munksgaard, 2004). These liners cannot bind to the acrylic denture base however, the use of an adhesive can get over this limitation, which was shown to be a method of failure (Dogan et al., 2006). These liner materials may be selected for the treatment of the following conditions despicable stability of denture, inadequate retention of denture, reduction of vertical dimension, degradation of the denture base, improper extension of borders into the muccobucc al congregating regions, mucosal irritations, atrophic ridges, bony undercuts, denture opposing natural teeth, reduced thickness and viscoelasticity of the mucosa, pain from gingival irritation, maxillofacial defects, traumatic or pathologic tissue loss and for reline of an existing denture (Zarb et al., 1989 Christensen, 1995 Hayakawa et al., 2000 knoll Rubel, 2011).As a conclusion then, these viscoelastic materials either tissue conditioners or soft lining materials are contributing to solve a list of dental problems that might exist in the removable prosthesis or could be used in a range of dental procedures which are related to fully or partially edentulous patients. Furthermore, these materials need a continuous care and maintenance especially, the tissue conditioner which tends to harden and roughen due to the loss of the plasticizer. However, we should not forget the primary purpose of these materials which is they are used as temporary materials during transitional situat ions.