W&H United Kingdom
* Multiflex® is a registered trade mark of Kaltenbach & Voigt GmbH, Germany
** also with other coupling versions available
*** Contra-angle handpieces of the Synea Vision Short Edition can be used on micromotors with an ISO coupling length of 23 mm or less
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Alegra Straight and Contra-angle Handpieces without light
Small head and ergonomic design
The Alegra straight and contra-angle handpieces are designed for comfortable working. Thanks to excellent ergonomics, the straight and contra-angle handpieces from W&H prevent excessive strain on your hands during preparation. The small contra-angle head allows optimal view of the treatment site.
Your advantages at a glance
- Robust and durable
- Ergonomic design
- Simple bur changing with the push-button chucking system
- Thermo washer disinfectable and sterilizable
- External coolant supply (spray clip, coolant hose, nozzle cleaner) available as accessories
Thermo washer disinfectable and sterilizableThermo washer disinfectable Sterilizable
Alegra straight and contra-angle handpieces are thermo washer disinfectable and sterilizable.
Perfect balancePerfect balance
The dental straight handpiece or dental contra-angle handpiece is comfortable in the hand and is perfectly balanced with the micro air motor.
Excellent ergonomicsFatigue-free operation
The easy 360° rotation of the Alegra straight or contra-angle handpiece on the micro air motor, the low overall weight and the slender design ensures fatigue-free operation.
![Alegra dental contra-angle handpiece WE-56]( "Alegra dental contra-angle handpiece WE-56")
WE-56
Dental contra-angle handpiece with
push-button chucking system,
for contra-angle burs with Ø 2.35 mm
(ISO 1797-1)
Drive speed: 40,000 rpm
Motor connection according to standard: ISO 3964
WE-56
REF 30116000Contra-angle handpiece 1:1
Head size: Ø 10.1 mm
Head height (with 19 mm bur): 20.8 mm
![Alegra dental contra-angle handpiece WE-57]( "Alegra dental contra-angle handpiece WE-57")
WE-57
Dental contra-angle handpiece with
push-button chucking system,
for FG burs with Ø 1.6 mm (ISO 1797-1)
Drive speed: 40,000 rpm
Motor connection according to standard: ISO 3964
WE-57
REF 30117000Contra-angle handpiece 1:1
Head size: Ø 10.1 mm
Head height (with 19 mm bur): 22.7 mm
![Alegra dental contra-angle handpiece WE-66]( "Alegra dental contra-angle handpiece WE-66")
WE-66
Dental contra-angle handpiece with
push-button chucking system,
for contra-angle burs with Ø 2.35 mm
(ISO 1797-1)
Drive speed: 40,000 rpm
Motor connection according to standard: ISO 3964
WE-66
REF 30118000Contra-angle handpiece 4:1
Head size: Ø 10.1 mm
Head height (with 19 mm bur): 20.8 mm
![Alegra dental straight handpiece HE-43]( "Alegra dental straight handpiece HE-43")
HE-43
Dental straight handpiece with
twist tension chucking system, for handpiece and contra-angle burs with Ø 2.35 mm (ISO 1797-1)
Drive speed: 40,000 rpm
Motor connection according to standard: ISO 3964
HE-43
REF 30119000Straight handpiece 1:1
An external coolant supply (spray clip, coolant hose, nozzle cleaner) for Alegra straight and contra-angle handpieces without light is available as an accessory.
Alegra Contra-angle Handpieces with LED+ light
Outer diameter of the sheath: 20 mm
More colour. More contrast. LED+
LED+ contra-angle handpieces from W&H offer an incomparably high colour rendering index (CRI). The self-generated LED light is of daylight quality, renders colours naturally and is many times brighter than a conventional halogen light.
Your advantages at a glance
- Independent sterilizable LED light
- High colour rendering index of more than 90
- Robust design
- Thermo washer disinfectable and sterilizable
Daylight quality LED+Visual clarity
A high CRI value significantly improves people‘s sense of wellbeing and ensures greater visibility.Perfect colour rendering has an index of 100. Conventional LEDs only have a CRI of between 60 and 80 and are ineffective in reproducing red tones.
LED+ contra-angle handpieces from W&H use a new technology: The result is a CRI of more than 90 which means clear colour contrasts and exceptional reproduction of natural red tones in the mouth.
Absolutely independentMicromotor on = LED+ on
The generator is integrated into the Alegra contra-angle handpieces and is completely independent. Therefore an external power supply is not required.The unique W&H LED+ generator technology ensures perfect LED+ quality, regardless of whether the dental unit, coupling or micromotor is equipped with its own light source.
Optimum preparation resultsAlegra speed-increasing contra-angle handpiece WE-99 LED G
Efficient and precise preparation – regulated finishing Optimum preparation results of your CAD/CAM restoration using the Alegra contra-angle handpiece WE-99 LED G.
![Alegra dental contra-angle handpiece WE-99 LED G]( "Alegra dental contra-angle handpiece WE-99 LED G")
WE-99 LED G
Dental contra-angle handpiece with
push-button chucking system,
for FG burs with Ø 1.6 mm (ISO 1797-1)
Drive speed: 40,000 rpm
Motor connection according to standard: ISO 3964
WE-99 LED G
REF 10259900Contra-angle handpiece 1:4.5
LED+ light
Triple spray
Head size: Ø 10.1 mm
Head height (with 19 mm bur): 22.3 mm
![Alegra dental contra-angle handpiece WE-56 LED G]( "Alegra dental contra-angle handpiece WE-56 LED G")
WE-56 LED G
Dental contra-angle handpiece with
push-button chucking system,
for contra-angle burs with Ø 2.35 mm
(ISO 1797-1)
Drive speed: 40,000 rpm
Motor connection according to standard: ISO 3964
WE-56 LED G
REF 10255600Contra-angle handpiece 1:1
LED+ light
Single spray
Head size: Ø 10.1 mm
Head height (with 19 mm bur): 20.7 mm
![Alegra dental contra-angle handpiece WE-66 LED G]( "Alegra dental contra-angle handpiece WE-66 LED G")
WE-66 LED G
Dental contra-angle handpiece with
push-button chucking system,
for contra-angle burs with Ø 2.35 mm
(ISO 1797-1)
Drive speed: 40,000 rpm
Motor connection according to standard: ISO 3964
WE-66 LED G
REF 10256600Contra-angle handpiece 4:1
LED+ light
Single spray
Head size: Ø 10.1 mm
Head height (with 19 mm bur): 20.7 mmDownload Area
FAQs
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Can the straight handpiece HE-43 E be used for surgical applications?
The new Alegra handpiece range have been tested and approved for the following applications: removal of decayed materials, cavities and crown cement, removal of fillings, finishing and polishing of tooth and restoration surfaces. Use in other areas of application is not recommended and therefore at user’s risk. more
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Can LED instruments with generator be sterilized?
Yes, W&H handpieces with LED and generator are both thermo washer disinfectable
and sterilizable 
.
more
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Can the current range of Alegra instruments be connected to motors with a light supply?
Yes, the straight and contra-angle handpieces in the new Alegra range can be used on any motor with an ISO connection. more
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What are the advantages of the Alegra instruments?
Independently generated LED light – the optic instruments in the Alegra range have LED light, which is supplied with energy from an integrated generator. The instruments are therefore independent of the light supply of the motor and the dental unit and offer the possibility of working with light regardless of which unit is used. The technology of the integrated generator means that there is only illumination when the instrument is running. more
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For what reason may the LED fail to light up?
Because the energy for the LED light in the new Alegra instruments is generated by an integrated generator, the brightness of the LED depends on the motor speed (at least 9,000rpm). more
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Is more heat generated by the light source when LED technology is employed?
No, because they are usually operated with coolant air. In addition, the LED contra-angle handpieces are equipped with an internal spray function, which guarantees additional cooling. more
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What is the difference between the Alegra contra-angle handpieces WE-56 T and WE-56?
Alegra contra-angle handpieces designated with the letter "T" are significantly lighter in weight. Alegra contra-angle handpieces that are not designated with the letter "T" have been approved for automated thermo washer disinfection. more
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Why does the WE-99 contra-angle handpiece have a transmission ratio of 1:4.5?
The optimum speed of fast-running burs can easily be achieved using the WE-99. more
Instructions for use
Find all languages of the Update Hygiene and Maintenance (EN ISO 17664:2017) in the Download Centre.
Video Tutorials
Downloads
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Alegra Straight and Contra-angle Handpieces without light
Outer diameter of the sheath: 20 mmWE-56 WE-57 WE-66 HE-43 Transmission ratio: 1:1 1:1 4:1 1:1 Motor connection according to standard: ISO 3964 Max. motor speed (rpm): 40,000 Head size: Ø 10.1 mm Ø 10.1 mm Ø 10.1 mm – Head height (with 19 mm bur): 20.8 mm 22.7 mm 20.8 mm – Rotary instruments according to ISO 1797-1: Contra-angle burs FG burs Contra-angle burs Handpiece and contra-angle burs Instrument shaft diameter: 2.35 mm 1.6 mm 2.35 mm 2.35 mm Maximum permitted bur length: 34* mm 25* mm 34* mm Handpiece burs: 50* mm
Contra-angle burs: 34* mmSpray: single, external Warranty: 12 months
* When using longer rotary instruments the user must ensure by correct selection of the operating conditions, that there is no danger to the user, patient or third parties.
Alegra Contra-angle Handpieces with LED+ light
Outer diameter of the sheath: 20 mmWE-56 LED G WE-66 LED G WE-99 LED G Transmission ratio: 1:1 4:1 1:4.5 Colour coding: blue green red Colour rendering index (CRI): > 90 Colour temperature (Kelvin): 5,500 Luminous flux (Lumen): 5.0 Brightness (Lux): 25,000 Motor connection according to standard: ISO 3964 Max. motor speed (rpm): 40,000 Head size: Ø 10.1 mm Head height (with 19 mm bur): 20.7 mm 20.7 mm 22.3 mm Rotary instruments according to ISO 1797-1: Contra-angle burs Contra-angle burs FG burs Instrument shaft diameter: 2.35 mm 2.35 mm 1.6 mm Maximum permitted bur length: 34* mm 34* mm 25* mm Spray: single single triple Warranty: 12 months
* When using longer rotary instruments the user must ensure by correct selection of the operating conditions, that there is no danger to the user, patient or third parties.
