<h2 style="text-align:justify">W&amp;H Synea Fusion WG-67 A Repair: Is the Reciprocating Mechanism Losing Its Precision? 
&nbsp;</h2>

A handpiece can still move and still be heading toward a repair. That is especially important with the W&amp;H Synea Fusion WG-67 A. This is not a conventional rotary contra-angle. It is a Profin&reg; reciprocating contra-angle with a 2:1 transmission and 1.1 mm stroke, designed for Dentatus tips and single-spray cooling. W&amp;H specifies a maximum motor speed of 20,000 rpm. 
&nbsp;

So when something changes, the question should not simply be: 
&nbsp;

&ldquo;Does the handpiece still work?&rdquo; 
&nbsp;

A better question is: 
&nbsp;

&ldquo;Is the reciprocating movement still controlled and consistent?&rdquo; 
&nbsp;

That distinction can help identify a developing repair problem before the instrument becomes unusable. 
&nbsp;

<h2 style="text-align:justify">The Three Changes Worth Taking Seriously 
&nbsp;</h2>

Most clinicians notice one of three things first: 
&nbsp;

<ol>
	<li>
	The movement feels different.
	</li>
	<li>
	The tip no longer behaves normally.
	</li>
	<li>
	The handpiece sounds or feels rougher than before. 
	&nbsp;
	</li>
</ol>

These symptoms can appear gradually. 
&nbsp;

<table align="center">
	<thead>
		<tr>
			<th style="text-align:justify">
			What you notice
			</th>
			<th style="text-align:justify">
			What it can indicate
			</th>
		</tr>
	</thead>
	<tbody>
		<tr>
			<td style="text-align:justify">
			Increased vibration
			</td>
			<td style="text-align:justify">
			Tip, retention or internal mechanical wear
			</td>
		</tr>
		<tr>
			<td style="text-align:justify">
			Rough reciprocating action
			</td>
			<td style="text-align:justify">
			Drive mechanism or internal wear
			</td>
		</tr>
		<tr>
			<td style="text-align:justify">
			New clicking or rattling
			</td>
			<td style="text-align:justify">
			Mechanical component problem
			</td>
		</tr>
		<tr>
			<td style="text-align:justify">
			Tip movement feels abnormal
			</td>
			<td style="text-align:justify">
			Tip/retention or drive issue
			</td>
		</tr>
		<tr>
			<td style="text-align:justify">
			Reduced polishing efficiency
			</td>
			<td style="text-align:justify">
			Tip, movement or mechanical problem
			</td>
		</tr>
		<tr>
			<td style="text-align:justify">
			Increased heat
			</td>
			<td style="text-align:justify">
			Friction or inadequate operating conditions
			</td>
		</tr>
		<tr>
			<td style="text-align:justify">
			Spray changes
			</td>
			<td style="text-align:justify">
			Water pathway or connection issue
			</td>
		</tr>
	</tbody>
</table>

 
These observations are not a diagnosis by themselves. They are clues. 
&nbsp;

If several of them are appearing together, it is better to have the handpiece assessed rather than continuing to compensate during treatment. Repair.Dental&#39;s <a href="https://repair.dental/services/handpiece-repair/w-and-h-dental-handpiece-repair">W&amp;H handpiece repair service</a> specifically handles contra-angle problems including gear wear, chuck issues, vibration and inconsistent performance. 
&nbsp;

<h2 style="text-align:justify">Don&#39;t Assume the Tip Is the Problem 
&nbsp;</h2>

Because the WG-67 A works with Dentatus tips, the tip should be the first thing to eliminate from the diagnosis. Try an appropriate known-good tip according to the manufacturer&#39;s instructions. 
&nbsp;

Then ask: 
&nbsp;

Did the symptom disappear? 
&nbsp;

If yes, the original tip may have contributed to the problem. If the same vibration, unusual movement or poor performance remains, the handpiece itself becomes more suspicious. This is an important distinction because repeatedly replacing tips without checking the handpiece can turn a mechanical problem into an expensive guessing exercise. If you&#39;re uncertain whether the symptom is tip-related or handpiece-related, <a href="https://repair.dental/contact">contact Repair.Dental</a> and describe what you have already tested. Their contact options include chat and WhatsApp. 
&nbsp;

<h2 style="text-align:justify">What Reciprocating Wear Can Feel Like 
&nbsp;</h2>

A conventional rotary handpiece may give obvious clues such as a high-pitched bearing noise. 
&nbsp;

With a reciprocating instrument, the clues can be subtler. 
&nbsp;

You may notice that the handpiece: 
&nbsp;

<ul>
	<li>
	feels less smooth against the treatment surface
	</li>
	<li>
	produces more vibration through the fingers
	</li>
	<li>
	sounds different during operation
	</li>
	<li>
	seems less efficient even with a suitable tip
	</li>
	<li>
	requires more pressure to achieve the same result 
	&nbsp;
	</li>
</ul>

That last point deserves attention. 
&nbsp;

Do not compensate for declining performance by simply pressing harder.&nbsp;More operator pressure does not correct an underlying mechanical problem. Instead, compare the WG-67 A with another properly functioning instrument when possible. If the difference remains obvious, professional assessment is the safer next step. 
&nbsp;

<h2 style="text-align:justify">When the Problem Is More Than Maintenance 
&nbsp;</h2>

Routine cleaning and lubrication are essential, but they cannot repair worn mechanical components. If the handpiece remains rough or noisy after correct maintenance, don&#39;t keep adding lubricant and hoping the symptom disappears. 
&nbsp;

Repair.Dental&#39;s <a href="https://repair.dental/repairguru/handpieces/handpiece-lubrication-systems-best-practices-maintenance-protocols">handpiece lubrication guidance</a> explains why correct lubricant selection and application matter&mdash;but persistent mechanical symptoms still require diagnosis. 
&nbsp;

A WG-67 A should be sent for professional assessment when you notice: 
&nbsp;

<ul>
	<li>
	persistent vibration
	</li>
	<li>
	abnormal reciprocating movement
	</li>
	<li>
	unusual mechanical noise
	</li>
	<li>
	unreliable tip retention
	</li>
	<li>
	excessive heat
	</li>
	<li>
	recurring performance loss
	</li>
	<li>
	symptoms that return immediately after maintenance 
	&nbsp;
	</li>
</ul>

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<h2 style="text-align:justify"> 
A Repair Request Should Tell a Story 
&nbsp;</h2>

A technician can do much more with: 
&nbsp;

&ldquo;WG-67 A has developed noticeable vibration with two different Dentatus tips. Spray is normal, but the movement feels rough.&rdquo; 
&nbsp;

than with: 
&nbsp;

&ldquo;WG-67 A damaged.&rdquo; 
&nbsp;

When submitting the instrument, include: 
&nbsp;

Model: WG-67 A 
&nbsp;

Tip: Which Dentatus tip was being used 
&nbsp;

Symptom: Vibration, noise, movement, heat, etc. 
&nbsp;

Timing: Sudden or gradual 
&nbsp;

Testing: Whether another suitable tip was tried 
&nbsp;

Maintenance: Whether routine cleaning/lubrication was performed 
&nbsp;

That information gives the repair team a useful starting point. 
&nbsp;

<h2 style="text-align:justify">Don&#39;t Wait for Complete Failure 
&nbsp;</h2>

A reciprocating handpiece does not need to become completely stationary before it deserves professional attention.If the movement has changed, performance is declining, or the instrument has developed a new mechanical sound, the best time to investigate is before the problem becomes a chairside emergency. 
&nbsp;

Repair.Dental offers <a href="https://repair.dental/services/handpiece-repair/w-and-h-dental-handpiece-repair">professional W&amp;H repair and service</a>, including assessment of contra-angle mechanical problems. 
&nbsp;

You can also <a href="https://repair.dental/contact">start the repair process through Repair.Dental</a> and use WhatsApp or chat if you want to discuss the symptom before shipping the handpiece. 
&nbsp;

For clinics managing multiple instruments, <a href="https://repair.dental/repairguru/handpieces/">RepairGuru&#39;s handpiece resources</a> can also help with routine care and early problem recognition. 
&nbsp;

<h2 style="text-align:justify">The Real Repair Question 
&nbsp;</h2>

The important question isn&#39;t whether the WG-67 A is completely broken. It is whether its movement, sound, feel and performance are still consistent with normal operation. If they are not, document the symptom, stop compensating for it during treatment, and get the instrument assessed. That can turn a developing problem into a planned repair instead of an unexpected equipment failure in the middle of a busy clinical day.

&nbsp;

<hr />
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;&nbsp;<a href="https://www.instagram.com/repair.dental/">Instagram</a>.

Discover WG-67 A repair warning signs including vibration, abnormal movement, tip retention problems, noise, heat, and reduced performance.