<h2>KaVo MASTERmatic M29 L Endo Repair Guide: Servicing the Double-Green Reducer</h2>

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Two green rings mean something specific at KaVo: a high reduction. The MASTERmatic M29 L is a 7.4:1 contra-angle that KaVo designed specifically for endodontic applications.

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When an endo instrument starts to feel rough or unsteady, there is no room for guesswork. This guide explains what to check and how to approach repair.

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<h2 style="text-align:justify">Endo contra-angle not feeling steady? Start your M29 L repair with Repair. Dental.&nbsp;</h2>

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<h2 style="text-align:justify">Meet the M29 L</h2>

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KaVo&#39;s MASTERmatic page lists the M29 L (Mat. no. 1.009.3580) at a 7.4:1 reduction ratio, marked as a double green contra-angle, specifically for endodontic applications. It has a 25,000 lux glass rod light conductor, internally guided separate cooling media, and an exchangeable spray filter. According to KaVo&#39;s MASTERmatic flyer, it is also a shank for INTRA LUX interchangeable heads.

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<h2 style="text-align:justify">Where the M29 L Sits in the Green Family</h2>

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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:150px">
			Model
			</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:167px">
			Ring
			</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:167px">
			Reduction
			</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:297px">
			KaVo Intended Use
			</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:150px">
			M07 L
			</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:167px">
			Green
			</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:167px">
			2.7:1
			</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:297px">
			Caries excavation and prophylaxis
			</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:150px">
			M29 L
			</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:167px">
			Double green
			</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:167px">
			7.4:1
			</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:297px">
			Endodontic applications
			</td>
		</tr>
	</tbody>
</table>

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If a &quot;double green&quot; feels too slow for a general task, that is by design, not a fault.

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<h2 style="text-align:justify">Symptoms That Need a Technician</h2>

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<ul>
	<li>
	Rough or uneven rotation
	</li>
	<li>
	An instrument that does not stay secure in the head
	</li>
	<li>
	Heat at the head
	</li>
	<li>
	Dim light or weak cooling
	</li>
</ul>

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<h2 style="text-align:justify">Head or Shank</h2>

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Because the M29 L works with INTRA LUX heads, a spare head can reveal where a fault lives. KaVo&#39;s INTRA heads page describes a quick-action safety retention collar for changes.

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<h2 style="text-align:justify">Warranty and KaVo REPAIR</h2>

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If your M29 L is within KaVo&#39;s 24-month MASTERmatic warranty, start with KaVo REPAIR.

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<h2 style="text-align:justify">Our M29 L Evaluation</h2>

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<ol>
	<li>
	We confirm the model and its 7.4:1 ratio.
	</li>
	<li>
	We test the head and shank separately.
	</li>
	<li>
	We assess smoothness, retention, and heat.
	</li>
	<li>
	We check light and cooling.
	</li>
	<li>
	We explain options before work begins.
	</li>
</ol>

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<h2 style="text-align:justify">Endo work needs steady hands and steady instruments. Send your M29 L to Repair.Dental.</h2>

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<h2 style="text-align:justify">M29 L Repair FAQs</h2>

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What does double green mean?

KaVo marks the M29 L as a double green contra-angle with a 7.4:1 reduction.

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Is the M29 L for endodontics?

Yes. KaVo lists it specifically for endodontic&nbsp;applications.&nbsp;

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Related&nbsp;Readings from RepairGuru :

&nbsp;

<ul>
	<li style="text-align:justify"><a href="https://repair.dental/repairguru/handpieces/the-dental-handpiece-is-not-turning">The Dental Handpiece Is Not Turning</a></li>
	<li style="text-align:justify"><a href="https://repair.dental/repairguru/handpieces/light-is-not-working-on-my-dental-handpiece">Light Is Not Working On My Dental Handpiece</a></li>
	<li style="text-align:justify"><a href="https://repair.dental/repairguru/handpieces/blocked-handpiece-coupling">Blocked Handpiece Coupling</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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 KaVo MASTERmatic M29 L 7.4:1 double-green endo contra-angle running rough or losing grip? Learn what to check and when to repair.

KaVo MASTERmatic M29 L Endo Repair Guide | Repair.Dental