rule of ten

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A method of providing a guide as to whether an infiltration or a block injection of local analgesic is appropriate for a child requiring treatment to a mandibular tooth. The primary tooth to be anaesthetized is assigned a number from 1 to 5 according to its location in the dental arch (central incisor = 1, second molar = 5). This number is added to the age of the child (in years), and if the number is 10 or less then an infiltration analgesic is most appropriate; if greater than 10, then an inferior dental nerve block is likely to be more effective.

Subjects: Dentistry.

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