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Visionstar SJD-221

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Visionstar Dental And Oral Care Equipment

Visionstar SJD-221

Product Code: DAOC-DI-2730

Find the second canal. Read the pulp. Check the apex.

Endodontics runs on periapicals. The Visionstar SJD-221 pairs a full-colour screen with 60 or 70 kV, four milliamp steps and 0.1–2 s timing, in a 1.7 kg palm-held body.

Sections

Intraoral X-ray Units

Categories

Dental And Oral Care Equipment

Condition

New

Origin

China

Seller Type

Certified Professional Seller

Size:

110 × 150 × 220 mm

CE & ISO Certified

Global Shipping

Supplier: Medigear

The Visionstar SJD-221 is a battery-powered dental X-ray generator for intraoral radiography at the point of care. The generator runs at 30 kHz, with tube voltage selectable at 60 or 70 kV, tube current selectable across 1.5, 2.0, 2.5 and 3.0 mA, and exposure timing from 0.1 to 2 seconds. Tube focus is specified at order as 0.4 mm or 0.8 mm.

High-frequency generator drive is what underpins consistent radiographic density. A 30 kHz inverter holds the kilovoltage waveform close to constant potential through the exposure, so the same protocol applied twice produces receptors of comparable density. That repeatability is the quiet requirement behind any imaging sequence read as a series — the four or more views a single root canal treatment generates, or a periapical repeated at review.

The control face carries a full colour screen. Colour separates machine state, the active kilovoltage, the current and the timing value into distinct fields, so all four are confirmed in one glance before triggering, with the unit already held in position and one hand occupied.

The housing is shaped to sit in the palm, with the flat control face to the rear and a tapered nose forward. At 220 mm deep, the emitting end stands away from the hand while the mass stays close to the wrist, which supports a steady hold through the exposure.

Two kilovoltage settings and four milliamp steps give a Medical Physics Expert scope when writing protocols under the optimisation duty in IR(ME)R 2017. Agree the values with your MPE and record them as local diagnostic reference levels.

Published distance from skin to cone is 130 mm — raise that with your Radiation Protection Adviser during specification, since UK dental guidance sets minimum focus-to-skin distances that differ above 60 kV, and this unit offers a 70 kV setting. Power comes from a DC 14.8 V 1600 mAh lithium pack, charged from AC 100–240 V with a DC 16.8 V output, rated at 100–300 VA. Medigear.uk can arrange supply, delivery, commissioning, staff familiarisation and service cover for the SJD-221 across the United Kingdom.

Intraoral radiography carries the diagnostic load in UK general dentistry, and the SJD-221 is configured for that daily volume. It supports bitewing caries detection, periapical assessment of pathology, alveolar bone-level review, and root morphology assessment ahead of extraction.

Endodontic practice is the clearest fit. A single root canal treatment routinely generates a diagnostic periapical, a working-length film, a master cone check, a post-obturation view and a review film at follow-up. Across that sequence the unit's stable output supports comparison from one view to the next, which is what makes serial interpretation meaningful — an apparent change in canal outline or periapical radiolucency should reflect the tooth, not the exposure.

The findings that matter are fine ones. Canal number and curvature, calcification narrowing a chamber with age, pulp stones, internal and external resorption, the proximity of caries to the pulp chamber, and the crown-to-root relationship all shape whether a tooth is treated conservatively, opened, or removed. Radiographic limits should be held in view too — intraoral views are two-dimensional, and a missed canal is a recognised limitation, so small-volume sectional imaging is requested where canal anatomy is the deciding question.

Restorative and prosthetic work uses the same views for crown margin assessment, post space evaluation and crown-to-root ratio before planning. Periodontal practice reads alveolar bone levels on periapicals and bitewings at recall.

Community dental services and special care teams need equipment one clinician can carry. At 1.7 kg the unit travels easily, though the modest published battery capacity is worth pressing on where long endodontic appointments are expected, with off-site radiation protection arrangements agreed with the RPA in advance.

Guidance from the College of General Dentistry and UKHSA Dental X-ray Protection Services remains the reference point UK practices work to, alongside HSE enforcement of IRR17.

Output that holds across a series

A 30 kHz inverter holds the kilovoltage waveform close to a constant potential throughout the exposure, so the same protocol applied twice produces comparable receptor density. That is the quiet requirement behind any sequence read as a series.

Built for the endodontic view set

Diagnostic film, working length, master cone, post-obturation and review — the unit produces all of them, with a timing range that reaches whichever receptor the surgery runs.

Four fields confirmed in one glance

A full colour screen separates machine state, kilovoltage, current and timing into distinct fields, so all four are checked before triggering with the unit already positioned and one hand occupied.

Focus chosen for fine detail.

Tube focus at 0.4 mm or 0.8 mm is specified at order. Canal outlines, lamina dura and early periapical change reward geometric sharpness, so that choice is worth making deliberately with your Medical Physics Expert.

An exposure envelope that spans the view set

Two kilovoltage settings and four milliamp steps let a protocol reach from paediatric anterior views up to molar bitewings on a large adult, with values agreed by your MPE and recorded as local diagnostic reference levels.

Mass at the wrist, beam well forward.

A rounded palm-held body with a 220 mm depth keeps the weight close to the wrist while the emitting end stands away from it, supporting a steady hold through the exposure across a long appointment.

Carried by one clinician

At 1.7 kg, the unit sits comfortably within single-person handling for a full list or a community round, alongside whatever else has to travel.

UK supply, commissioning and service through one route

Medigear.uk can arrange listing, supply, delivery, installation, commissioning, staff familiarisation, service cover, planned maintenance and quotations for the SJD-221 across the United Kingdom, including requesting the manufacturer's focus-to-skin, cone, filtration and battery documentation with your quotation.

Full-colour screen

A colour panel presents machine state, kilovoltage, current and timing as separate fields on one reading face.

30 kHz generator

High-frequency drive produces a near-constant potential waveform through the exposure, supporting repeatable receptor density from one radiograph to the next.

Selectable tube voltage at 60 or 70 kV

Two kilovoltage settings support protocols that vary by region, patient build and the greyscale range a view requires.

Selectable tube current across four steps

Tube current is offered at 1.5, 2.0, 2.5 and 3.0 mA, giving a second exposure variable alongside kilovoltage and time.

0.1–2 second exposure timing

A twenty-fold span reaches direct digital sensors at the short end and phosphor storage plate or film technique at the upper limit.

Tube focus at 0.4 mm or 0.8 mm

Focus size is specified at order, one of the figures governing geometric sharpness at the receptor alongside working distance and receptor type.

130 mm published skin-to-cone distance

The manufacturer publishes a skin-to-cone figure; confirm with the manufacturer whether this is the focus-to-skin distance and which kilovoltage settings the supplied cone supports, and have your RPA review it.

Palm-held rounded housing

The body is shaped to sit in the palm, with the flat control face to the rear and a tapered nose forward of the hand.

220 mm housing depth

Published depth places the emitting end well forward of the operator's hand while the mass stays close to the wrist.

Membrane control keypad

A sealed key array gives positive tactile feedback under a glove and presents a flat, wipeable control face for routine decontamination.

Ready and exposure indicators

Illuminated status markers signal machine state through the exposure cycle, giving visual confirmation at each stage.

Side-mounted exposure release

The exposure control sits on the side of the housing, within reach of the carrying hand while the head is held in position.

DC 14.8 V 1600 mAh lithium battery

An integrated lithium pack powers the unit away from a fixed power position, charged from AC 100–240 V with a DC 16.8 V output and a 100–300 VA rating.

Moulded hand strap and wipeable shell

An integrated strap supports single-hand carrying, and the sealed keypad and moulded housing present flat surfaces suited to routine surgical decontamination.

The Visionstar SJD-221 gives UK dental teams a 1.7 kg battery-powered X-ray generator built around a full colour screen and 30 kHz generator drive, with selectable 60 or 70 kV tube voltage, four selectable milliamp steps, a 0.1–2 second exposure range, tube focus at 0.4 mm or 0.8 mm and a DC 14.8 V lithium pack. It fits NHS and private general practice, endodontic and referral clinics, restorative and prosthetic work, periodontal recall, paediatric and special care dentistry, community dental services and outreach programmes. Medigear.uk can arrange supply, delivery, commissioning, staff familiarisation, service cover and planned maintenance across the United Kingdom, and can arrange for the manufacturer's focus-to-skin distance, cone, filtration and battery documentation to accompany your quotation for your Radiation Protection Adviser's review. Contact the Medigear.uk team for pricing, lead times, tube focus selection and configuration enquiries.

FAQ

Frequently Asked Questions

Everything buyers need to know about sourcing medical equipment through MediGear.

A single root canal treatment routinely generates four or more intraoral views — a diagnostic periapical, a working-length film, a master cone check and a post-obturation view, with a review film later. The unit produces all of them, and the timing range covers whichever receptor the surgery runs on. Consistent output across that sequence matters as much as any single exposure, since the views are read against one another. Each exposure still requires individual justification under IR(ME)R 2017.

A periapical view can suggest one — an off-centre canal outline, an abrupt change in canal density, or a root outline wider than the visible canal are the usual radiographic hints, and a second view at a shifted horizontal angulation often separates overlapping canals. But intraoral radiography is two-dimensional, and a missed canal is a recognised limitation of it. Where canal anatomy is the deciding question, small-volume sectional imaging is the appropriate request under IR(ME)R justification.

Pulp chamber size and outline, secondary dentine deposition narrowing the chamber with age, pulp stones, the proximity of a carious lesion to the chamber, and internal or external resorption are all assessed on periapical views. Those findings feed directly into whether a tooth is treated conservatively, opened, or extracted. Calcified chambers and canals are common in older patients and often need a well-exposed film to read at all.

Because the views are compared. If a working-length film is exposed differently from the diagnostic film, apparent changes in canal outline or periapical radiolucency may reflect the exposure rather than the tooth. A stable generator output combined with a documented protocol keeps the series comparable, which is what makes serial interpretation and review radiographs meaningful.

Focus is specified at order as 0.4 mm or 0.8 mm. Focus size governs geometric unsharpness at the receptor, and fine canal outlines, lamina dura and early periapical change are exactly the detail that rewards a sharper geometry. Discuss the choice with your Medical Physics Expert alongside your working distance and receptor type, and confirm it in writing on the order.

Raise this before the order. UK dental guidance sets minimum focus-to-skin distances for intraoral equipment, and the required figure steps up for sets operating above 60 kV — commonly expressed as 100 mm at 60 kV and below, and 200 mm above 60 kV. This unit offers a 70 kV setting and publishes a 130 mm skin-to-cone figure. Ask the manufacturer to confirm whether that is the focus-to-skin distance or a cone measurement, whether a longer cone is available, and which kilovoltage settings the supplied cone supports. Have your Radiation Protection Adviser resolve it before the unit goes into service.

The pack is a DC 14.8 V 1600 mAh lithium unit, charged from AC 100–240 V with a DC 16.8 V output, so it runs on UK mains directly. The manufacturer does not publish an exposures-per-charge figure, which is worth pressing on for a unit intended for endodontic work, since a single long appointment can consume several exposures. Request the figure at quotation along with spare pack availability and pricing.

The Ionising Radiations Regulations 2017 require employers carrying out dental X-ray work to register with the Health and Safety Executive, appoint a Radiation Protection Adviser, nominate a Radiation Protection Supervisor and complete a radiation risk assessment. The Ionising Radiation (Medical Exposure) Regulations 2017 add the appointment of a Medical Physics Expert, justification and optimisation of each exposure, and documented training for referrers, practitioners and operators. A critical examination is required when the equipment is put into service. These duties sit with the employer.

Dental X-ray equipment is subject to routine quality assurance and periodic radiological testing under IRR17, alongside annual electro-mechanical inspection, with a critical examination required at installation. UK service providers commonly apply an annual radiological testing interval to hand-carried units, and your Radiation Protection Adviser sets the schedule. Warranty terms are set and issued by the seller or manufacturer, typically 12–24 months, with battery packs often warranted on a shorter cycle — confirm at quotation.