Disclosed are applicators and methods injecting of a liquid anesthetic into a dental patient with no or minimal pain. In accordance with one embodiment the applicator is for intraligamentary injection and includes an elongated, thin member having an open distal free formed of a resilient and somewhat conformable material suitable for producing a substantially fluid-tight interface with the anatomic structures at the gingival sulcus to inject the anesthetic therein. In another embodiment the applicator includes a flexible skirt surrounding a sharpened cannula, with the cannula being movable with respect to the skirt. The skirt is arranged to receive the anesthetic to anesthetize the gum, whereupon the cannula can then pierce the gum to inject the anesthetic into the underlying anatomic structure.

A nickel-titanium file root canal preparation instrument, including a nickel-titanium preparation system and a water flushing system. The nickel-titanium preparation system includes a nickel-titanium file, a handheld device head, a handheld device body, an electric motor, and a power controller; the water flushing system includes a conduit, a conduit fixing device, a liquid pump, and a liquid pump controller. The existing theory and study regarding root canal preparation has misled people about the root canal preparation method, and this leads to the result that the existing nickel-titanium root canal preparation is implemented in a dry-drilling manner. By providing a water flow to perform flushing during the root canal preparation of the nickel-titanium file root canal preparation instrument, the service life of the nickel-titanium file is prolonged.

Dental and medical treatments and methods, including treating gum disease, using peroxide gel and a viscous antimicrobial including a topical antibacterial agent, a topical antiviral agent, a topical antibiotic, a topical antifungal agent, a topical antiseptic agent, or a topical anti-intermicrobial agent to chemically debride and curettage a treatment area. Treatments and methods include non-surgically scaling and root plaining the treatment area with dental tools such as periodontal scalers and/or curettes during the active period of the chemical debridement. The working surfaces of dental and medical tools can be sharpened for optimal root and tooth surfacing during treatment. Treatment can include instructions for co-therapy by or on behalf of treatment subjects between visits and for maintenance care.

Dental and medical treatments and methods, including treating gum disease, using peroxide gel and a viscous antimicrobial including a topical antibacterial agent, a topical antiviral agent, a topical antibiotic, a topical antifungal agent, a topical antiseptic agent, or a topical anti-intermicrobial agent to chemically debride and curettage a treatment area. Treatments and methods include non-surgically scaling and root plaining the treatment area with dental tools such as periodontal scalers and/or curettes during the active period of the chemical debridement. The working surfaces of dental and medical tools can be sharpened for optimal root and tooth surfacing during treatment. Treatment can include instructions for co-therapy by or on behalf of treatment subjects between visits and for maintenance care.

An electrical discharge irrigation device and method is described. An electrical discharge irrigation device includes a power source, a circuit coupled to the power source, and an output tip coupled to the circuit. The output tip includes a first end and a second end and a longitudinal axis extending between them, an electrode located in an interior space of the output tip configured to receive an electrical charge from the circuit and to release an electric discharge, and a ground return including an inner surface of the output tip, wherein a space between the electrode and the ground return comprises a conductive medium, the conductive medium being in contact with the electrode and the ground return to produce the electric discharge.

An electrical discharge irrigation device and method is described. An electrical discharge irrigation device includes a power source, a circuit coupled to the power source, and an output tip coupled to the circuit. The output tip includes a first end and a second end and a longitudinal axis extending between them, an electrode located in an interior space of the output tip configured to receive an electrical charge from the circuit and to release an electric discharge, and a ground return including an inner surface of the output tip, wherein a space between the electrode and the ground return comprises a conductive medium, the conductive medium being in contact with the electrode and the ground return to produce the electric discharge.

A dental tissue regenerative composition. The composition includes a combination of (1) human dental pulp stem cells and (2) at least one of human umbilical vein endothelial cells or vascular endothelial growth factor. The combination is encapsulated in a light-activated gelatin methacrylate hydrogel.

A dental tissue regenerative composition. The composition includes a combination of (1) human dental pulp stem cells and (2) at least one of human umbilical vein endothelial cells or vascular endothelial growth factor. The combination is encapsulated in a light-activated gelatin methacrylate hydrogel.

A dental tissue regenerative composition. The composition includes a combination of (1) human dental pulp stem cells and (2) at least one of human umbilical vein endothelial cells or vascular endothelial growth factor. The combination is encapsulated in a light-activated gelatin methacrylate hydrogel.

A dental tissue regenerative composition. The composition includes a combination of (1) human dental pulp stem cells and (2) at least one of human umbilical vein endothelial cells or vascular endothelial growth factor. The combination is encapsulated in a light-activated gelatin methacrylate hydrogel.