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Undetected extra roots or root canals have been considered as a major reason for failure of root canal treatment. However endodontic treatment can fail for many reasons, such as diagnostic errors, persistence of the infection in the root canal system, errors in debridement and shaping of the root canal systems, instrument fractures, poor restorations and extra roots or canals if not detected are the reasons for failure. In comparison, teeth having a single canal can often be treated in just a single appointment, lasting possibly on the order of 45 minutes or less.Successful outcome of endodontic treatment depends on the identification of all root canals which in turn guarantee complete extirpation of pulp tissue, proper chemo-mechanical cleaning and shaping and three dimensional obturation of the root canal system with an inert filling material. In corresponding fashion, appointments scheduled for treating a molar might be expected to run over an hour (and possibly more than one appointment may be needed). If you'll explore this link ( root canal treatment cost estimates - website: ), you'll see how dentists categorize their fees for endodontic therapy according to tooth type (in this case a general proxy for expected number of tooth roots and root canals).įor example, you'll find that treating an upper molar (a tooth that has at minimum 3 canals) can be expected to cost roughly 30 to 40% more than an upper incisor (a tooth that just has a single canal). You'll find that the cost of root canal treatment, as well as the amount of time and/or number of visits it takes to complete it, generally correlates with the complexity of the tooth's anatomy (its combined number of roots and root canals). Procedure cost and appointment time vary according to treatment complexity. molars.Īs an example, without question a dentist is likely to experience far fewer difficulties and frustrations when treating an upper incisor (a tooth known for typically having a single large canal), as opposed to an upper molar (which is likely to have at least 4 canals, 3 of which are usually relatively small in diameter).
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But a dentist can generally anticipate that the canals they find in the former will likely be narrower, probably harder to locate, and potentially more challenging to work (clean and shape with their instruments) than teeth that have just a single canal. That's not to say that teeth with two canals are twice as difficult to treat as those that have just one. In general, the greater the number of root canals that a tooth has, the greater the degree of difficulty associated with treating it. The number of root canals generally correlates with treatment complexity. The extra magnification that the use of a microscope can provide aids with these tasks. It's important that all of a tooth's root canals are located and treated. This video segment also shows the dental microscope that the dentist is using during this procedure. Doing so will aid in both the remainder of the process used to clean them, and then their sealing procedure to follow. It seems that most of the work that the dentist is performing in the portion of the video we've selected involves opening up and flaring the upper 1/2 or so of each of the individual canals. These are literally the holes in the floor of this tooth's pulp chamber that lead down into its roots' canals. When viewing this video, look for the two separate pairs of openings. That makes for a total of four root canals present in this lower first molar.The distal (rear-most) root typically just has one canal, but it may have two (which is the case with the tooth shown in this video).It's expected that the mesial (front) root will have two canals.As mentioned in our text, a mandibular (lower) first molar always has two roots.