Purpose: To determine if biostimulation using a 810 nm diode laser was capable of affecting the rate of extraction space closure during orthodontic treatment.
Materials and methods:Forty dental arches of patients above 17 years of age requiring bilateral first premolar extractions were exposed to a 810 nm diode laser with a power density of 3.97 W/cm 2 at 3 weeks intervals for total duration of 12 weeks during the space closure phase under direct anchorage using miniscrews. Space closure measurements were taken using digital calipers and the unpaired t-test was used to compare the differences between the experimental and control sides.
Results:The rate of orthodontic tooth movement was greater on the experimental side and the difference between the two sides was statistically significant (p < 0.001).
Conclusion:Biostimulation carried out using a 810 nm diode laser is capable of increasing the rate of extraction space closure in humans. Hence, it can be concluded that it is capable of increasing the rate of orthodontic tooth movement.
Low-placed transpalatal arch (TPA) usually indicated in cases requiring molar intrusion often lead to indentations of the U loop on the dorsum of tongue, thus causing discomfort and irritation to the patient.1 A simple modification using archwire sleeve over the loop of the TPA can eliminate these problems.
2It can be fabricated by using the following techniques:1. An archwire sleeve of 1 inch length with 0.31" (internal diameter) was passed over the 0.9 mm wire before fabrication of TPA loop (Fig. 1).
ABSTRACTConventionally fabricated transpalatal arches often create deep grooves on the tongue causing discomfort to the patients. To ovecome this situation a modification has been devised which requires only a few minutes of lab time, thus enhancing patient's compliance toward treatment.
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