Dental age-sanjeev /fixed orthodontic courses by IDA

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PowerPoint Presentation: INDIAN DENTAL ACADEMY Leader in continuing dental education Dental age

Dental age:

Dental age Chronological and dental age are synchronous in the normal patient. A child is labeled as an early or late developer if there is a difference of +/- 2 years from the average value. If the chronologic age of the patient is younger than the dental age, one can rely on increased growth to a greater degree than when dental age is retarded in relation to the chronologic age ( and possibly biologic age). Dental age can be determined two methods: - Stage of eruption - stage of tooth mineralization on radiograph

Stage of Eruption:

Stage of Eruption Determination of dental age from observation of eruption has been the only method available for a long time In certain cases however, the accuracy of the method is limited. During the quiescent period in eruption, this appoach is inadequate.

Stage of tooth mineralization on radiograph (Demirjian et al 1973):

Stage of tooth mineralization on radiograph (Demirjian et al 1973) When determining dental age radiographically according to the stages of germinations, the degree of the development of individual teeth is compared to a fixed scale. For age determination one does not rely on the last stage of tooth formation but on the entire process of dental mineralization. The procedure can be used for the entire deciduous and mixed dentition period, and is not influnced by early loss of deciduous teeth.

PowerPoint Presentation:

The calculation is made using a point evaluation system. Each tooth is given a point value according to its state of development. The sum of individual points gives the development value, which can be transferred into the dental age with the aid of standard tables.

PowerPoint Presentation:

The smaller the sum of points, the younger the dental age; the higher the sum, the older the dental age. Experience shows that the method is sufficiently accurate if the stage of mineralization of teeth 1-7 in the left lower quadrant is examined. The procedure is not valid for patients with several congenitally absent teeth.

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