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Tangent Cut
A type of tooth stump preparation technique for a dental crown is known as tangent cut. A tooth stump can be found in several ways such as groove cut, step cut and the tangent cut. In the process of drilling a crown, a tangent cut can be performed relatively quickly as the tooth just needs to be tapered diagonally. The main disadvantage of this type of drilling a tooth is that the dental technician when making the bridge or crown must maintain a certain minimum width at the edges of the ceramic as these edges would otherwise break off. The result is unattractively, protruding and bulging edges. Thus, in order to hide these edges the cutting margins are set under the gums, where a dental probe or piece of floss or particles of food can easily get caught in such bridge or crown margins. More often than not, the tangent cut results in the unfortunate inflammation of the gums, which eventually lead to the receding of the gums, making the bridge margins visible and sure shot root caries. Despite these grave consequences, the tangent is still the most commonly form of drilling a tooth or drilling a crown or drilling a bridge and it is highly advised to avoid it as much as possible. To know more about the tangent cut, please watch the video.
Produced: 08/2011