| 摘要 |
A dental tool guide assembly includes a master or fixed sleeve having a central bore and a removable sleeve insert having a central bore which fits into the fixed sleeve. The fixed sleeve and removable sleeve insert each have a cut away side section which are alignable when the removable sleeve insert is inserted into the fixed sleeve. The cutaway side sections allow an upright tool to be brought laterally and radially-inward through the outer fixed sleeve and inner removable sleeve and then vertically downward through the bore of the removable sleeve. This design allows easier access to the osteotomy site without requiring the patient to open their mouth by a painful amount. The design also allows the use of longer drills in smaller mouths. The removable sleeves are preferably provided with a variety of inner bore diameters but all having the same outer diameter which closely correspond to the inner diameter of the bore of the fixed sleeve.
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