<h2>KaVo MASTERmatic M20 L Maintenance: Caring for a Shank and Its Interchangeable Heads</h2>

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When a contra-angle has interchangeable heads, maintenance becomes a two-part job: the shank and every head that goes on it. The KaVo MASTERmatic M20 L is one of those instruments.

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This guide shows how to look after both.

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<h2 style="text-align:justify">Two Parts, One Routine</h2>

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In KaVo&#39;s MASTERmatic flyer, the M20 L appears as a shank for INTRA LUX heads. Each head and the shank should go through KaVo&#39;s full preparation process every time they are used.

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The M20 L Care Map

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<table align="center" cellspacing="0" style="border-collapse:collapse; width:900px">
	<thead>
		<tr>
			<td style="background-color:black; border-bottom:1px solid black; border-left:1px solid black; border-right:1px solid black; border-top:1px solid black; vertical-align:top; width:167px">
			Part
			</td>
			<td style="background-color:black; border-bottom:1px solid black; border-left:none; border-right:1px solid black; border-top:1px solid black; vertical-align:top; width:258px">
			What to Care For
			</td>
			<td style="background-color:black; border-bottom:1px solid black; border-left:none; border-right:1px solid black; border-top:1px solid black; vertical-align:top; width:355px">
			How
			</td>
		</tr>
	</thead>
	<tbody>
		<tr>
			<td style="background-color:#f2f2f2; border-bottom:1px solid black; border-left:1px solid black; border-right:1px solid black; border-top:none; vertical-align:top; width:167px">
			Head
			</td>
			<td style="background-color:white; border-bottom:1px solid black; border-left:none; border-right:1px solid black; border-top:none; vertical-align:top; width:258px">
			Chuck and bur seat
			</td>
			<td style="background-color:white; border-bottom:1px solid black; border-left:none; border-right:1px solid black; border-top:none; vertical-align:top; width:355px">
			Clean, lubricate with KaVo Spray or QUATTROcare PLUS
			</td>
		</tr>
		<tr>
			<td style="background-color:#f2f2f2; border-bottom:1px solid black; border-left:1px solid black; border-right:1px solid black; border-top:none; vertical-align:top; width:167px">
			Head connection
			</td>
			<td style="background-color:white; border-bottom:1px solid black; border-left:none; border-right:1px solid black; border-top:none; vertical-align:top; width:258px">
			Safety retention collar
			</td>
			<td style="background-color:white; border-bottom:1px solid black; border-left:none; border-right:1px solid black; border-top:none; vertical-align:top; width:355px">
			Keep clean so heads change cleanly
			</td>
		</tr>
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			<td style="background-color:#f2f2f2; border-bottom:1px solid black; border-left:1px solid black; border-right:1px solid black; border-top:none; vertical-align:top; width:167px">
			Shank
			</td>
			<td style="background-color:white; border-bottom:1px solid black; border-left:none; border-right:1px solid black; border-top:none; vertical-align:top; width:258px">
			Light path and spray filter
			</td>
			<td style="background-color:white; border-bottom:1px solid black; border-left:none; border-right:1px solid black; border-top:none; vertical-align:top; width:355px">
			Clean light exit; replace filter when spray drops
			</td>
		</tr>
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			<td style="background-color:#f2f2f2; border-bottom:1px solid black; border-left:1px solid black; border-right:1px solid black; border-top:none; vertical-align:top; width:167px">
			Coupling
			</td>
			<td style="background-color:white; border-bottom:1px solid black; border-left:none; border-right:1px solid black; border-top:none; vertical-align:top; width:258px">
			O-rings
			</td>
			<td style="background-color:white; border-bottom:1px solid black; border-left:none; border-right:1px solid black; border-top:none; vertical-align:top; width:355px">
			Replace as a set with KaVo oils
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			<td style="background-color:#f2f2f2; border-bottom:1px solid black; border-left:1px solid black; border-right:1px solid black; border-top:none; vertical-align:top; width:167px">
			Whole instrument
			</td>
			<td style="background-color:white; border-bottom:1px solid black; border-left:none; border-right:1px solid black; border-top:none; vertical-align:top; width:258px">
			Sterilization
			</td>
			<td style="background-color:white; border-bottom:1px solid black; border-left:none; border-right:1px solid black; border-top:none; vertical-align:top; width:355px">
			Use your IFU cycle; max 135&deg;C (275&deg;F)
			</td>
		</tr>
	</tbody>
</table>

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<h2 style="text-align:justify">Changing Heads Without Causing Wear</h2>

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KaVo&#39;s INTRA LUX heads page describes a quick-action safety retention collar for simple, fast head changes. Keep the connection area clean, and make sure each head is fully engaged before use.

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Spray and Filter

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KaVo&#39;s care tips explain that a dirty filter reduces spray quality and that hard water can clog channels. Change the exchangeable filter when spray weakens and clean nozzles with KaVo&#39;s dedicated needles.

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Spray or light fading on your M20 L? Let Repair.Dental check the shank.

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<h2 style="text-align:justify">Lubrication</h2>

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Lubricate with KaVo Spray or the QUATTROcare PLUS, which KaVo says includes a collet program for reliable bur holding power.

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O-Rings

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Replace worn O-rings as a full set by hand with KaVo-recommended oils, and attach the M20 L straight with a slight twist.

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<h2 style="text-align:justify">Mistakes to Avoid</h2>

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<ol>
	<li>
	Reprocessing the shank but forgetting spare heads.
	</li>
	<li>
	Forcing a head that is not fully engaged.
	</li>
	<li>
	Leaving a dirty filter in place.
	</li>
	<li>
	Using descaling agents.
	</li>
	<li>
	Sterilizing above 135&deg;C.
	</li>
</ol>

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<h2 style="text-align:justify">M20 L Care FAQs</h2>

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Do spare heads need reprocessing too?

Yes. Every head used on a patient goes through the full process.

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How do I change an INTRA LUX head?

KaVo describes a quick-action safety retention collar. Follow the instructions supplied with your heads.

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<h2 style="text-align:justify">Related Readings from RepairGuru :</h2>

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<ul>
	<li style="text-align: justify;"><a href="https://repair.dental/repairguru/handpieces/preventive-maintenance-for-nsk-handpieces-extend-lifespan-cut-costs">Preventive Maintenance for NSK Handpieces: Extend Lifespan &amp; Cut Costs</a></li>
	<li style="text-align: justify;"><a href="https://repair.dental/repairguru/handpieces/ultimate-guide-to-nsk-dental-handpiece-maintenance-repair">Ultimate Guide to NSK Dental Handpiece Maintenance &amp; Repair</a></li>
	<li style="text-align: justify;"><a href="https://repair.dental/repairguru/handpieces/how-to-choose-a-reliable-dental-handpiece-repair-company">How to Choose a Reliable Dental Handpiece Repair Company</a></li>
</ul>

 
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<a href="https://repair.dental/print-shipping-label/handpiece-repair">Start Your Repair</a>

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For more insights on professional dental equipment repair, please visit&nbsp;<a href="https://repair.dental/">Repair.Dental</a> or follow us on&nbsp;<a href="https://www.facebook.com/repair.dental">Facebook</a> &amp;<a href="https://www.instagram.com/repair.dental/"> Instagram</a>.

Daily care for the KaVo MASTERmatic M20 L: head changes, spray filter, light care, KaVo lubrication and the 135°C sterilization limit.

KaVo MASTERmatic M20 L Maintenance Guide | Repair.Dental