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( Canal) Canals are artificial channels for water. There are two types of canals water conveyance canals, which are used for the conveyance and delivery of water, and waterways, which are navigable transportation canals used for passage of goods and people, often connected to existing lakes, rivers, or oceans. For canals used for water supply, see Aqueduct.

Some canals are part of an existing waterway. This is usually where a river has been canalised making it navigable by widening and deepening some parts (by dredging, weirs or both), and providing locks with "cuts" around the weirs or other difficult sections. In France, these waterways are called lateral canals and in the UK they are generally called navigations, and the length of the artificial waterway often exceeds the natural. The individual cuts that make up such a canal system may each be called a reach.^[1]

Smaller transportation canals can carry barges or narrowboats, while ship canals allow seagoing ships to travel to an inland port (e.g. Manchester Ship Canal), or from one sea or ocean to another (e.g. Caledonian Canal, Panama Canal).

At their simplest, canals consist of a trench filled with water. Depending on the stratum the canal passes through, it may be necessary to line the cut with some form of watertight material such as clay or concrete. When this is done with clay this is known as puddling.

Canal Subcategories Canal Articles Dental Care: Information About Root Canals by Nicholas Tan A root canal is a dental procedure that all of us are familiar with. Root canals are something we all dread, although when someone else is getting the procedure most of us find it to be somewhat amusing. When someone asks for a root canal on the ot... Tooth Abscesses and the Root Canal Relief by Robert Melkonyan In its simplest sense, a tooth abscess is an infection of the root of the tooth or of the tooth itself. When the root of the tooth is dead, a dentist is most likely to clean the tooth and the root canal before filling the tooth and root canal. In thi... 5 Tips For Searching Dental Professional For Root Canal Surgery by Alex Bellweather If you are facing problems related to your teeth and looking for the specialized dentist in your area than it is slightly difficult than searching for the general dentist. It is one of the most daunting tasks to search the experienced and suc... Causes of Root Canal Disease by Melanie C Root canal disease happens when the pulpy tissue in the tooth becomes damaged. This can be due to periodontal disease, extensive dental procedures or injury such as a blow to the mouth. When this tissue becomes damaged, it must be removed, the area d... Traditional Root Canal Procedures may soon be a Thing of the Past by Robert Melkonyan It has been the same old drill for years, painful trips to the dentist in order to save a tooth with a root canal but that technique is getting a makeover with a special procedure which is referred to as direct pulp capping. Dentists are now able to... Root Canal Myths by Melanie C Root canal treatment is when the pulp of the tooth that lies underneath the gum becomes infected and must be removed. While it used to be a painful treatment, these days it's no more painful than having a tooth filled. It does not require many trips ... Fight The Trend—Save On Dental by Don Robertson Many sources today will tell you that it is impossible to find low cost dental. Though you have to search a little harder low cost dental is still available for you and your family. Low cost dental benefits are usually no longer found in dental ins... Surviving Your Very Own Root Canal by Don Robertson You wouldn’t be reading this if you didn’t have some reservations about having a root canal done. Probably, after finding out that you needed to have a root canal, you told a friend. What did your friend do? He or she immediately shared wit... Dental studios are fitted with Toto toilets and spa. by Haynes Darlington M.Sc. PharmD. When did this all happen? This has got to be one of the best kept secret…WOW! Times were when your twice a year visits to the dentist were the most nerve shattering and fearful experiences one had to put up with. Recently I developed an acute pain ... An Introduction To Dental Implants by matt oliver Dental implants are used to replace both the form and the function of missing teeth. In the case of existing teeth, the tooth root holds the tooth in place. When a tooth has been lost due to infection, gum disease, an accident, or injury, a dental im...