| CPC A61C 5/42 (2017.02) [A61C 2201/00 (2013.01)] | 11 Claims |
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1. A dental bur for removing precise portions of a tooth, comprising:
a shank having a first terminal end, a second terminal end located opposite the first terminal end in a longitudinal direction of the shank, an attachment section located adjacent the first terminal end, and a guide section located between the attachment section and the second terminal end, the attachment section being configured to be inserted into and rotationally driven by a high-speed rotary device, the guide section including at least one portion having a first portion having a first width measured in a transverse direction of the shank and a second portion having a second width measured in the transverse direction, and the first width being different than the second width; and
a head arranged on the second terminal end of the shank and including a main body portion arranged on the second terminal end of the shank and a tip located on an outer terminal end of the main body portion and opposite the shank, the tip having at least one rounded portion configured to remove portions of the tooth, and the head being entirely coated in an abrasive diamond material,
wherein the main body portion is cylindrical and continuously tapered from an inner terminal end of the main body portion to the tip, the main body portion tapering from a larger width to a smaller width in a direction from the shank to the tip,
wherein the at least one rounded portion of the tip has a semi-spherical shape,
wherein the guide section is devoid of abrasive diamond material and devoid of an abrasive coating,
wherein the guide section includes an inner end located adjacent the attachment section, an outer end located adjacent the head, and an intermediate section located between the inner end and the outer end, the first portion having the first width is located at the inner end of the guide section, the second portion having the second width is located at the outer end of the guide section, a third portion of the guide section is located between the first portion and the second portion within the intermediate section and has a third width measured in the transverse direction, and the first width and the second width are greater than the third width such that the guide section has an hourglass shape,
wherein the third width is the smallest width along a longitudinal length of the guide section, and
wherein a first lengthwise location that is located generally centrally along the longitudinal length of the guide section has the third width.
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