Sonendo has been granted a patent for a method of treating root canals in teeth using laser technology. The method involves introducing laser light into the pulp chamber of a tooth to disintegrate pulp within the root canal without generating significant heat. The laser light is pulsed through an optical fiber with a conical tip, creating photoacoustic waves that remove organic material from the root canal walls. GlobalData’s report on Sonendo gives a 360-degree view of the company including its patenting strategy. Buy the report here.
According to GlobalData’s company profile on Sonendo, neuromodulation devices was a key innovation area identified from patents. Sonendo's grant share as of June 2023 was 1%. Grant share is based on the ratio of number of grants to total number of patents.
Method for cleaning root canal using laser light
A recently granted patent (Publication Number: US11684421B2) describes a method for cleaning a root canal of a tooth using laser technology. The method involves delivering a treatment liquid into the root canal and inserting the tip of an optical fiber into the treatment liquid. The optical fiber has a conical tip that emits laser light laterally outwardly relative to the fiber axis. A laser source is operated to generate laser light, which is pulsed along the optical fiber to the tip. At least a portion of the laser light is directed into the treatment liquid, creating photoacoustic waves with sufficient vibrational energy to remove organic material from the wall of the root canal.
The patent also includes variations of the method, such as distributing the treatment liquid throughout the root canal using the vibrational energy of the photoacoustic waves. It further describes a method for cleaning a tooth with a coronal pulp chamber and a root canal, where the tip of the optical fiber is positioned within the coronal pulp chamber and outside of the root canal. The laser light is pulsed into the treatment liquid, producing photoacoustic waves that remove organic material from the coronal pulp chamber.
The patent emphasizes the importance of the shape of the tip of the optical fiber, which tapers radially inwardly and distally. It also specifies the power level, pulse frequency, and cycle time of the laser source for optimal cleaning without damaging the tooth or adjacent tissue.
Another variation of the method is described for cleaning a root canal with a main root canal and accessory canals branching from it. The tip of the optical fiber is inserted into the treatment liquid within the main root canal, and the laser light is directed laterally outwardly into the treatment liquid. This removes organic material from both the main root canal and the accessory canals without the need to insert the tip into the accessory canals.
Overall, this patent presents a method for effectively cleaning root canals using laser technology. The use of photoacoustic waves generated by laser light provides a non-invasive and efficient way to remove organic material from the root canal walls, potentially improving the success of root canal treatments.