Obtura III MAX Operator'S Manual Download Page 9

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Installing a Needle

To place the gutta percha where desired in the root canal, choose an applicator needle diameter best suited (20, 23 or
25-gauge). With the Obtura III MAX off and cool, remove the needle nut using the Multi-Tool; the needle nut should
remain on the Multi-Tool when unscrewed. Place the appropriate needle in the rear of the needle nut, so that the length of
the needle protrudes through and forward (diagram G). Re-attach the needle nut on to the heater thread using the Multi-
Tool, making sure not to cross-thread (diagram H). Tighten until snug (do not over tighten, but do not leave too loose).

Bending the Needle

In most situations, a straight applicator needle will not provide access to the root canal. Using the Multi-Tool, gently
bend the needle to provide a shape conducive to the procedure (see diagram I). Be careful not to bend too sharply as
kinks will result and gutta percha flow will be blocked. For access to difficult to reach root canals, simply loosen the
needle nut, rotate the needle to desired position, and then re-tighten.

Loading Gutta Percha

WARNING: USING MORE THAN ONE STICK OF GUTTA PERCHA AT A TIME MAY DAMAGE THE SEAL.
DO NOT USE MORE THAN ONE PIECE AT A TIME.

Power on the Obtura III MAX and wait for the heater to come up to your desired temperature. Press the handpiece release
button on the top of the Obtura III MAX handpiece and withdraw the plunger shaft. Insert a gutta percha stick into the
chamber via the opening just forward of the release button (see diagram J). Re-insert the plunger shaft until the plunger seal
engages the gutta percha pellet. Some resistance will be felt as the gutta percha is pushed forward to the heating chamber.

Expressing Gutta Percha

Specifics to technique will not be addressed here, but a few reminders and hints follow:

•

When expressing gutta percha, do not “

withdraw

” the Obtura III MAX, but let the gutta percha fill “

push

” the

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needle out of the canal. Pulling the needle out may cause voids and require condensation or re-work.

•

Take care when bending needles, as a kink will make it all but impossible to express material. Also, repeated

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bending will cause needle weakening and subsequent breakage.

•

Wait for the gutta percha to come up to full operating temperature before attempting to express; material that

----------

is too cool will require much more pressure or may be impossible to pass through a small diameter applicator needle.

•

Before beginning a procedure, express about 3 cm of gutta percha so that the up-to-temperature material will be

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at the end of the needle; the warm material will fill space more completely.

INSTALLING A NEEDLE

OPERATOR’S

MANUAL

HEATED

GUTTA PERCHA

SYSTEM

Factory Repair/Contact Us

Factory Service is available at Obtura Spartan. Please call the number below for technical support and
problem diagnosis.

Obtura Spartan
(800) 344-1321
www.obtura.com

It is necessary to acquire an RMA number before returning your unit. Failure to do this may result in longer repair

times and additional charges.

If you have spoken to the repair department and it is determined that the unit must be returned to the factory,
please be sure to pack carefully and appropriately. Use the original box and packaging (if possible), or a
minimum of 8 cm (3 in) impact-absorbing insulation in your new box. Obtura Spartan will not be responsible for
damage due to improper packing or shipping. Insurance is optional and highly recommended.

Note:

Unauthorized repair will void all warranties. Authorized repair procedures must follow all safety

precautions. Be sure that the power supply connector is disconnected from the power supply port before
authorized repairs, and that safety glasses are worn at all times during the authorized repair procedures.

Replacement Parts

Description

823-800

823-810

823-711

823-616

823-618

823-812

823-620

823-635

823-815

822-602