an oral surgery simulating device for planning an oral surgery for a patient including a stand having a base , a device for receiving a cast of a mandible of the patient movably connected to the base , a device for receiving a cast of a maxilla of the patient connected to the stand and positioned atop the cast of the mandible and a pointing unit releasably connected to the stand for aligning the cast of the mandible and the cast of the maxilla with relation to frankfort &# 39 ; s horizontal plane to thereby provide a replica of an upper and lower jaw of the patient . the device for receiving the cast of the maxilla is adjustable in a lateral direction and rotatable . the pointer unit includes a pole , a c - shaped clamp connected to and slideable along a length of the pole and first , second and third pointers extending from the c - shaped clamp for measuring the upper and lower jaw of the patient in relation to frankfort &# 39 ; s horizontal plane . the device for receiving the mandible includes an adjusting device for positioning the cast of the mandible replicating the lower jaw of the patient . the device for receiving the maxilla also includes an adjusting device for positioning the cast of the mandible in a position replicating the upper jaw of the patient . a mandibular ramus facsimile is also pivotally connected to the stand for simulating the ramus of the patient .