WEBVTT

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In order to use the Dinar articulator to

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diagnose conductor paths of movement and

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to fabricate accusal restorations.

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The operator must be familiar with the proper hand

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grasps for manipulating the articulator

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and have knowledge of the articulator conductor

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controls and how they can be adjusted.

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This scene demonstrates the proper method for

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disassembly and assembly of the

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bows of the articulator to

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disassemble,

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lift the upper bow straight

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up to reassemble seat,

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the far con dial in its Fassa and

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rotate the lower bow to seat the near con dial in its

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fossa

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equivalent movements can also be accomplished when the

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articulator is resting on a surface.

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The two bows of the instrument lock together

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when the articulator is rotated,

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open,

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the centric latch is operated with the thumb and index

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finger of the left hand.

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The left thumb is also used to apply necessary

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pressures to the back of the upper bow.

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In effecting excursive movements

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to use an ACON articulator correctly.

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The operator must learn the hand grasps which are used

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to apply pressure to the top back of the upper bow

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to ensure that the orbiting and rotating con

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dials maintain contact with their guiding

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fossil walls.

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A right handed operator curls the fingers of the left

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hand under the mandibular crossbar

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and guides the back of the upper bow with the left

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thumb during lateral excursive movements.

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Using the underhand push full grasp.

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This same left hand position is used in the

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underhand protrusive push grasp.

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The operator must also master the one hand

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grasps.

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So his other hand can be free to adjust the

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articulator to pan graphic records.

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Therefore,

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the hand grasps most frequently used in the

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laboratory are the overhand push

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the overhand pull

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and the overhand protrusive.

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The dinar articulator has fully adjustable

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conductor controls by

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loosening the protrusive conductor path adjustment,

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lock screw,

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the angle of the protrusive condo path can be

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changed.

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The inclination of the protrusive conductor path

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from the horizontal reference plane is calibrated on a

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scale in increments of five

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degrees.

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The immediate side shift adjustment allows the

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medial fossil wall to be relocated more immediately

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to provide for a greater straight lateral bodily

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side shift of the mandible.

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Before the orbiting con dial advances.

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The immediate side shift adjustment has a vernier

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scale calibrated in increments of

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2/10 of a millimeter.

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The progressive side shift adjustment is indicated on a

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scale calibrated in increments of five

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degrees.

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It allows the angle of a medial fossil wall to be

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changed in relation to the sagittal

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plane

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by setting the left fossa controls to allow

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for a one millimeter immediate side shift

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and a 20 degree progressive side shift

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and observing the articulator movements from the back of the

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articulator.

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We can note that in the right lateral mandibular

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movement,

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the right rotating con dial and mandible move

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immediately to the right as the mandible leaves

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centric relation and then it

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moves progressively more to the right.

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As the left orbiting con dial advances,

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the timing of the bodily side shift of the articulator

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is dictated by the immediate and progressive side shift.

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Adjustments of the medial fossil wall on the

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orbiting side.

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When the left medial fossil wall is adjusted to allow

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the con dial to move downward forward and

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inward.

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And in an immediate and progressive side shift,

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the orbiting con di is guided by its superior and

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medial fossil walls.

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As the mandible moves bodily to the patient's right.

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In this excursive movement,

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the right rotating con di moves outward,

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guided by its superior and rear fossil

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walls.

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These guiding surfaces which govern the outward

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movement of the rotating condi can also be adjusted

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on the articulator to simulate the patient's

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condi paths of movement.

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The rear wall adjustment enables the inclination of the rear

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wall to be adjusted forward or backward.

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The rear wall adjustment scale is marked in

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increments of five degrees.

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It is marked F and B to

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indicate a forward or backward setting.

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The top wall adjustment enables the inclination of the

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faucet to be adjusted media laterally so that

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it will guide the rotating con dial either

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out and down or out and

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up in a lateral excursive movement.

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The top wall adjustment scale is on the posterior

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aspect of the Fassa and is calibrated

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in increments of five degrees.

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It is marked D and U to indicate

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either out and down or out and

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up

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in order to become proficient in handling,

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the dinar articulator rehearse the different

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hand grasps used to manipulate the

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articulator and practice the setting of the

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various Congar adjustments.