Effects of Ultrasound and Sonic Toothbrushes on Oral Hygiene Status

Comparison of the effects of ultrasound toothbrushes with different frequencies on oral hygiene: A randomized‐controlled clinical trial

“…If individuals with moderate or severe gingivitis (a GI score 1.0–2.0) and dental biofilms were investigated, more significant improvements in gingival health and intergroup differences could likely be observed. The hypothesis tested in this study was that ultrasound could stimulate the salivary glands, thereby increasing the salivary flow rate, as previously suggested 6 . However, the results did not show any changes in the unstimulated saliva flow rate.…”

“…The hypothesis tested in this study was that ultrasound could stimulate the salivary glands, thereby increasing the salivary flow rate, as previously suggested. 6 However, the results did not show any changes in the unstimulated saliva flow rate. Imperceptible ultrasound vibrations may have no effect on the salivary glands, and a longer period of use may be required to increase the unstimulated saliva flow rate.…”

“…Ultrasound technology is utilized in powered and ultrasound toothbrushes, which generally have a frequency of 1.6 MHz, 2,3 and the further positive effects of ultrasonic toothbrushes have been confirmed in additional studies 4,5 . A previous pilot study also demonstrated that ultrasound helps to remove plaque 6 . However, the effects of ultrasound toothbrushes with no sonic vibration on oral hygiene have not been elucidated.…”

Dental Plaque Removal by Ultrasonic Toothbrushes

“…However, based on the existing literature, it can be assumed that the combination of sonic and ultrasonic action synergistically increases the effective cleaning of teeth [30,31]. Takenouchi et al showed that ultrasonic toothbrushes were more effective in decreasing dental microbial load and increasing the flow rate of the dental fluid over a study time range of four weeks [32]. The ultrasonically activated water stream may remove dental biofilm even in non-contact surfaces by stimulating saliva flow.…”

Recent advancements in toothbrush systems for improved mechanical plaque control

“…Theoretically, gingival fluids in the sulcus can also conduct the ultrasonic waves into the subgingival environment [18] . Takenouchi et al evaluated the effects of ultrasonic toothbrushes in dental hygiene students for a period of four weeks and found these brushes to be highly effective in decreasing the plaque index scores and increasing the flow rate of saliva [19] . (Example -Emmi-dent TM , Emmi Ultrasonic, Germany)…”