Ultrasound oscillation can be propagated to a distal end of an elongated probe. A cross-sectional surface of the probe is perpendicular to the length of the probe, and has to the same shape as a shape of a cross-sectional surface of an anchor. The probe is configured to forma bottomed hole in a bone for placing the anchor and the shape of its cross-sectional surface can prevent rotation of the anchor in the bottomed hole. An area of the cross-sectional surface of the probe at the distal end can be larger than an area of a cross-sectional surface of the probe at a proximal end. The distal end of the probe includes a treatment portion that extends outward from a center of the proximal end of the probe in a first direction perpendicular to the longitudinal direction and in a second direction different from the first direction.

A dental insert (10) has a nozzle (30) supporting a grip sleeve (80). Nozzle 30 may include several components (31, 32, 33) that are assembled without the need for a weld. A grip retaining ring 60 is positioned at a nodal location.

A tool bit for an ultrasonic osteotome comprises a cutting portion at a front end of the tool bit, a bit body connected to a transducer and an arbor connecting the cutting portion and the bit body. The cutting portion is a long cylinder, a front end of which is shrunk, and a plurality of spiral cutting edges are formed on a side surface of the cylinder. When an operation is performed, the tool bit does not rotate, and thus will not cause damage to a body tissue such as pulling and tangling on the tissue. The tool bit can be accurately positioned, and there is no slippage and deviation on a bone surface, so that the cutting process is stable and smooth with high maneuverability. It integrates drilling and grinding functions in one body, realizing a multi-purpose scalpel, reducing operating time and fatigue of a doctor.

A tool bit for an ultrasonic osteotome comprises a cutting portion at a front end of the tool bit, a bit body connected to a transducer and an arbor connecting the cutting portion and the bit body. The cutting portion is a long cylinder, a front end of which is shrunk, and a plurality of spiral cutting edges are formed on a side surface of the cylinder. When an operation is performed, the tool bit does not rotate, and thus will not cause damage to a body tissue such as pulling and tangling on the tissue. The tool bit can be accurately positioned, and there is no slippage and deviation on a bone surface, so that the cutting process is stable and smooth with high maneuverability. It integrates drilling and grinding functions in one body, realizing a multi-purpose scalpel, reducing operating time and fatigue of a doctor.

A surgical tool with an improved drive system may feature an uneven, rotating, swash plate pushing against a spring biased driving shaft to transform rotary motion to linear motion. As the swash plate pushes forward, the spring tension increases and is then continually released as the swash plate is rotates to a point where less pressure is applied to the shaft. The motion is then smooth, continuous, and reciprocating. Various tool bits may be provided for various operations.

A surgical tool with an improved drive system may feature an uneven, rotating, swash plate pushing against a spring biased driving shaft to transform rotary motion to linear motion. As the swash plate pushes forward, the spring tension increases and is then continually released as the swash plate is rotates to a point where less pressure is applied to the shaft. The motion is then smooth, continuous, and reciprocating. Various tool bits may be provided for various operations.

A method for performing an inferior lift in a sinus includes preparing an initial opening in a bone including a marrow section and a hard sinus floor, the initial opening being drilled through the marrow section to a depth just prior to reaching the hard floor of the sinus. A portion of the hard sinus floor is removed using a sonic drilling device. Subsequently any remaining doughnut shaped hard floor of the sinus is removed using a second tip on the sonic drilling device that has an active portion that is substantially limited to 360 degrees about the circumference of the forward direction of the tip but without any forward cutting surface, the second tip configured to remove bone only in the lateral direction of the second tip without substantial cutting contact with the marrow section of the bone clearing a widened opening in the hard sinus floor of the bone.

A method for performing an inferior lift in a sinus includes preparing an initial opening in a bone including a marrow section and a hard sinus floor, the initial opening being drilled through the marrow section to a depth just prior to reaching the hard floor of the sinus. A portion of the hard sinus floor is removed using a sonic drilling device. Subsequently any remaining doughnut shaped hard floor of the sinus is removed using a second tip on the sonic drilling device that has an active portion that is substantially limited to 360 degrees about the circumference of the forward direction of the tip but without any forward cutting surface, the second tip configured to remove bone only in the lateral direction of the second tip without substantial cutting contact with the marrow section of the bone clearing a widened opening in the hard sinus floor of the bone.

A light transmitting probe for use in endodontic procedures comprises a light transmitting core and a metallic sheath surrounding said core. The metallic sheath defines a reflective inner surface. The probe further includes a plurality of apertures formed in the sheath, such that light can exit said probe through the apertures.

A light transmitting probe for use in endodontic procedures comprises a light transmitting core and a metallic sheath surrounding said core. The metallic sheath defines a reflective inner surface. The probe further includes a plurality of apertures formed in the sheath, such that light can exit said probe through the apertures.