IADR Abstract Archives
Reduction of Overall Orthodontic Treatment Duration with Low-intensity Pulsed Ultrasound
Objectives: To determine if LIPUS reduces the overall treatment duration in orthodontic patients using Invisalign.
Methods: This is a retrospective clinical study of 25 patients (7 males, 18 females; age 42.09±16.05) who finished their orthodontic treatment using a commercially available low-intensity pulsed ultrasound (LIPUS) and Invisalign in a private clinic. 6 patients had Class I, 8 patients had Class II and 10 patients had class III malocclusions. A matching control group (n=25) was randomly selected from the clinic’s finished treatment cases. LIPUS device was used by patients intraorally for 20 minutes/day at home. The device produces ultrasound pulses of 1.5MHz frequency, a pulse repetition rate of 1K Hz, and the average output intensity of 30mW/cm2. The date of first Invisalign attachment placement was recorded as T1 and the date of retainer delivery was recorded as T2. The variables include treatment duration (T2-T1), treatment reduction percentage and average compliance with the LIPUS system of the test group were collected and analyzed using the two-sample t-test.
Results: The time duration was significantly reduced in the test group (504.26±169.49 days) compared to the control group (953.64±403.39 days) (p<0.05). Average days/tray for the test group was 5.8±1.4 and the control group was 9.9±3.3 (p<0.05). Overall, the test group showed 49.18% reduction in the treatment time as compared to the control group. The test group showed 64% average compliance in using the LIPUS device.
Conclusions: LIPUS produced clinically significant reduction in the overall orthodontic treatment duration in the patients using LIPUS device as compared to the control group using Invisalign.
Methods: This is a retrospective clinical study of 25 patients (7 males, 18 females; age 42.09±16.05) who finished their orthodontic treatment using a commercially available low-intensity pulsed ultrasound (LIPUS) and Invisalign in a private clinic. 6 patients had Class I, 8 patients had Class II and 10 patients had class III malocclusions. A matching control group (n=25) was randomly selected from the clinic’s finished treatment cases. LIPUS device was used by patients intraorally for 20 minutes/day at home. The device produces ultrasound pulses of 1.5MHz frequency, a pulse repetition rate of 1K Hz, and the average output intensity of 30mW/cm2. The date of first Invisalign attachment placement was recorded as T1 and the date of retainer delivery was recorded as T2. The variables include treatment duration (T2-T1), treatment reduction percentage and average compliance with the LIPUS system of the test group were collected and analyzed using the two-sample t-test.
Results: The time duration was significantly reduced in the test group (504.26±169.49 days) compared to the control group (953.64±403.39 days) (p<0.05). Average days/tray for the test group was 5.8±1.4 and the control group was 9.9±3.3 (p<0.05). Overall, the test group showed 49.18% reduction in the treatment time as compared to the control group. The test group showed 64% average compliance in using the LIPUS device.
Conclusions: LIPUS produced clinically significant reduction in the overall orthodontic treatment duration in the patients using LIPUS device as compared to the control group using Invisalign.
