 Hello everyone welcome back to another session on dentistry and more today's topic is types of storage media of tooth it is associated with dental avulsion management so we know what is dental avulsion it is a complete displacement or ex-aticulation the loss of tooth from its socket due to a sports injury or accident or any other mechanical trauma so the tooth is lost from its socket so we need to keep the tooth in a storage media so what are the various storage media and its properties and its advantages and disadvantages so dental avulsion is nothing but complete displacement of a tooth from its socket in alveolar bone it's also known as ex-aticulation and it is most commonly associated with maxillary teeth or upper teeth so we may face or the kids may face trauma to the face and mouth from sports or other accidents which can cause teeth to fracture, loosen or even knocked completely out of its socket which is known as avulsion or ex-aticulation so there will be bleeding socket with missing tooth and radiographic features will be there the empty socket and a bone fracture there will be associated problem and the treatment depends upon the apical foramen closure if it is closed we can go for endodontic therapy and if it is not closed we need to wait for the closure of apical foramen so today's topic is not about the treatment today's topic is about storage media how we are going to store the tooth until it gets re-implanted so we need to re-implant the tooth back to its socket so till the time we need to store the tooth in an appropriate media otherwise the cell viability the periodontal cells which is attached to the root will be died will not be useful for further re-implantation so we need to maintain the cell viability so that's why we are keeping in an appropriate storage media so what are the storage media is available and what are the properties of the storage media so basically a storage media should have like should have anti-material properties it should be able to maintain the viability or the periodontal fibers it should favor the proliferative capacity of the cell it should have same osmolarity as that of body fluids it should not produce any antigen antibody reactions and it should reduce the risk of post implantation root resorption or even ankylosis and it should have good shelf life so these are the basic properties of a storage media that is antimicrobial characteristics should be there periodontal fibers should be maintained and same osmolarity of body fluids and it should proliferate the capacity of cells so we have various storage media that is saline tap water saliva milk HBSS that is Hanks balanced salt solution propolis contact lens solution we can use even egg white or coconut water so saline solution is osmolarity is 280 despite being compatible to the cells of PDL that is periodontal ligaments its osmolarity is 280 whereas a tap water is very unexpected storage media because it causes cell damage due to the very low osmolarity so osmolarity is very low saline solution has at least 280 the tap water's osmolarity is very low so we cannot keep our tooth in a tap water so saline has 280 so what what if we keep our tooth in tap water so the periodontal cells will be died it will not be useful anymore so saliva is a good storage media for shorter period of time its osmolarity is much lower and it is like 60 to 70 compared to the saline and it has a harming effect on bacterial contamination that is a advantage of saliva but osmolarity is comparatively low compared to saline milk is very important or a good storage media because it has amino acids carbohydrates and other vitamins so it can help the tooth like it is if it is used in the first 20 minutes after evolution there will be favorable results due to these content that is amino acid carbohydrates and vitamins and this is the most commonly used storage media that is HP SS or hanks balanced solution it is a very standard solution this solution is non-toxic biocompatible with PDL cells PHE 7.2 osmolarity is 320 so osmolarity is 320 320 is osmolarity and it does not require a refrigerator and it has a two years self-life and it is now available as a commercial product that is save a tooth so in this product name it is available so it is the most commonly used storage media we cannot say exactly commonly used but it is a most apt one save a tooth or HP SS so the next one is propolis propolis is a stickier isn't that seeps from the buds of bark of trees so it has antiseptic antibody or antibacterial or antifungal or antiviral properties conduction lens solution also we can use because it has a buffered isotonic saline solution which can preserve the PDL cells egg white also can be used as a storage media so the storage media's role is temporary because we need to re-implan the tooth with cell viability or pedodontal cells as soon as possible otherwise there will be chances of ankylosis or other problems so till the time it gets re-implaned and we need to use a storage media so most appropriate one is HP SS but sometimes won't be freely available so we can use saline or saliva which is the most easily available milk also can be used so I'll come up with a new session on dendritian merge thank you