What's the difference between abutment and drawbore?
Abutment
Definition:
(n.) State of abutting.
(n.) That on or against which a body abuts or presses
(n.) The solid part of a pier or wall, etc., which receives the thrust or lateral pressure of an arch, vault, or strut.
(n.) A fixed point or surface from which resistance or reaction is obtained, as the cylinder head of a steam engine, the fulcrum of a lever, etc.
(n.) In breech-loading firearms, the block behind the barrel which receives the pressure due to recoil.
Example Sentences:
(1) One abutment was used to evaluate each of nine oral hygiene instrumentation methods used for specified lengths of time or instrument strokes.
(2) During the study period, it was possible to maintain mean plaque index scores of 0.40 to 0.70 and mean gingival index scores of 0.90 to 0.98 adjacent to the abutments.
(3) Supragingival plaque samples from selected surfaces of two abutment teeth were taken at one week, and at one, three, and six months after initial insertion of the overdenture.
(4) The second technique is the fabrication of a cast post and core restoration that fits an abutment root as well as the existing crown of a four-unit fixed restoration.
(5) This technique allows an accurate cast to be made of a prepared abutment tooth with the removable partial denture in place in the mouth.
(6) The clinical results shown that, after twelve years of experience, the stress breaker framework allows the preservation of the abutments as well as the conservation of osseo-mucous tissues (no need of rebase).
(7) Capillaries and small arterioles or venules, ranging from 8-50 microns in diameter, showed perikarya and dendrites abutting the basement membrane without evidence of glial interposition.
(8) Complications that resulted in catheter malfunction included deposition of fibrin around the catheter tip (formation of a fibrin sheath) in 44 (57%) instances, a constricting suture in six, abutment of the catheter tip against the venous wall in eight, catheter leak in two, and migration of the catheter completely out of the vein in three.
(9) Two of these were used as abutments for partial dentures.
(10) All vessels were found in the typical retroesophageal location, abutting the esophagus from the vertebral C-7 to T-3 levels.
(11) Twenty-five extracted caries-free anterior teeth from patients aged 50-70 were prepared as overdenture abutments.
(12) 2 implants in the lower jaw showed some mobility at the abutment installation and were removed immediately.
(13) The abutment teeth next to the modification spaces were moderately restored with MOD or class II restorations on most of the teeth.
(14) The abutment tooth is then prepared, providing adequate clearance between the clasp assembly and the tooth preparation.
(15) The index improves visibility of the tooth and abutment cylinder relationship permitting the optimization of framework dimensions and contour.
(16) Self-curing resins enable the operator to prepare directly temporary prosthesis on single crown abutments.
(17) The avoidance of lateral forces on overdenture retainers is essential to prevent pathological change in the supporting tissues of the root abutment.
(18) In each hemicerebellum there is one zebrin II+ band abutting the midline (P1+), and two others laterally in the vermis (P2+, P3+).
(19) It was formed by electrolytic etching directly after the bonding surface of metal retainer was abraded, preparation of the axial grooves in the edentulous proximal surfaces of abutments, drying with compressed air and drying agent after enamel was acid etched and washed, bonding area was about 49 mm2 in each retainer and without using opaque agent between bonding agent and resin.
(20) In the implant fixed partial denture, stresses induced in the surrounding bone became higher around the posterior abutment and became lower around the premolar retainer than the stresses produced with the natural tooth fixed partial denture.
Drawbore
Definition:
(n.) A hole bored through a tenon nearer to the shoulder than the holes through the cheeks are to the edge or abutment against which the shoulder is to rest, so that a pin or bolt, when driven into it, will draw these parts together.
(v. t.) To make a drawbore in; as, to drawbore a tenon.
(v. t.) To enlarge the bore of a gun barrel by drawing, instead of thrusting, a revolving tool through it.