When to start orthodontic treatment considering age and relative growth
| Autor: | Doyle J Smith |
|---|---|
| Rok vydání: | 1948 |
| Předmět: |
Orthodontics
Molar Developmental age business.industry Permanent dentition Dentistry General Medicine medicine.disease medicine.anatomical_structure Tooth movement Deciduous teeth medicine Humans Odontogenesis Malocclusion business Dental Care Tooth Physiological Phenomena Permanent teeth Rate of growth |
| Zdroj: | Military surgeon. 102(1) |
| ISSN: | 0096-6827 |
| Popis: | General skeletal and dental development rather than age should be the determining factor evaluating the presence of malocclusion. Since growth is a dynamic process, and growth periods may overlap and may be difficult to define exactly in all cases, diagnosis and treatment may be synchronized with both the particular stage of growth of the individual patient and the chronologic age in the absence of skeletal retardation or acceleration. Mershon called attention to the fact that treatment of malocclusion must be synchronized with the general growth of the child. Orthodontic general tooth movement cannot be forced and teeth should not be moved into positions which they would not occupy under normal conditions at the particular stage of maturative growth of the child. Eby was among the first to point out that since there is a range of difference between chronologic and physiologic age of every person, and the rate of growth varies with the individual, the age of the patient is an indefinite basis for the establishment of diagnosis and treatment of malocclusion. With the foregoing conditions in mind, children with dentofacial abnormalities have been divided into the following developmental age groups for the purpose of treatment: Group I.—Age 3 to 6 years. Conditions indicating treatment include the occurrence of definite functional interferences. These should be observed at periodic intervals and treated if evidence of intensification of the condition, rendering it conducive to malocclusion, is found. The following conditions involving function should be treated during this period: 1. a. Extreme contraction of the dental arches. 2. b. Extreme distoclusion. 3. c. Mesioclusion of the mandible. 4. d. Cross-bites and other dysfunctional relationships which interfere with normal dentofacial growth. Group II.—Age 6 to 8 years. Treatment is indicated in the following conditions as long as the deciduous roots have not been resorbed to any degree which would interfere with anchorage or make movement of deciduous teeth ineffective: 1. a. Contraction of the dental arches. 2. b. Widening of the arches. 3. c. Distoclusion. 4. d. Mesioclusion. 5. e. Cross-bites. 6. f. Functional and developmental interference. This group possesses a preventive as well as a corrective value. In Groups I and II the primary interest is the correction of abnormalities in the trend of growth and the elimination of functional interferences. Group III.—Age 8 to 12 years (“transitional period”). Care should be taken not to interfere with the rapid changes in growth such as the forward shift in the position of the molars and eruption of the canines. Contrarily, too much space may be present in the lateral segments. Gross malocclusion should be treated. Extensive tooth movement of newly erupted permanent teeth should be avoided. Group IV.—Age 12 to 20 years. Treatment in the permanent dentition should be initiated when malocclusion of a correctable nature is present. |
| Databáze: | OpenAIRE |
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