Correction of molar relationship and close the gap

When treatment of the second stage began, teeth row flat tidy, arch or reverse joint curve has also been the basic correction. The purpose of this stage of treatment, correction of molar occlusion and the midline of the anterior teeth relationship and dental instruments adjustment, the relationship of the posterior teeth at the same time, close the gap in the dental arch on.

One. There are four clinical correction of molar relationship

1. The early use of orthopedic force to promote the specific growth of the jaw.

2. Using a variety of devices designed to adjust the location of the teeth, such as the Lip Bumper and various molar back of the device

3. Tooth extraction space and poor power moves back and forth to adjust the bite.

4. Class II or III class traction, the teeth and alveolar relative movement so as to achieve a molar class I relationship.

Two. About the center line of correction

Correction of the timing of the center line of the best in the second period, because this period of correction less difficult. Correction methods need to be Prevention and treatment of traumatic anterior teeth in children selected according to the patient's specific, common methods are:

Three. Extraction spaces were closed

1. on the interaction between the mandibular anterior teeth traction.

2. Traction of the posterior side of the side of the Class II Class Ⅲ.

3. The intermaxillary non counterweight traction.

4. Maxillary asymmetric force of law.

5 Single jaw fixed traction.

6. Adjustment Act of jaw arch form.