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Visionstar SJD-121

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Visionstar Dental And Oral Care Equipment

Visionstar SJD-121

Product Code: DAOC-DI-2723

Two kilovoltages, two kinds of contrast. Choose per view.

Kilovoltage is a contrast control. The Visionstar SJD-121 offers 60 or 70 kV alongside four milliamp steps, 0.1–2 s timing and a full colour display, in a 1.7 kg body.

Sections

Intraoral X-ray Units

Categories

Dental And Oral Care Equipment

Condition

New

Origin

China

Seller Type

Certified Professional Seller

Size:

110 × 140 × 165 mm

CE & ISO Certified

Global Shipping

Supplier: Medigear

The Visionstar SJD-121 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.

The kilovoltage selection is worth understanding as a radiographic control rather than a power setting. Lower kilovoltage produces a beam with a narrower energy spread, which raises subject contrast — helpful where the diagnostic task is distinguishing demineralised enamel from sound tissue. Higher kilovoltage penetrates more readily and yields a longer greyscale, which suits tasks where a range of densities has to be read in one image, such as alveolar bone levels or a region carrying restorative material. Which setting belongs to which view is a decision for your Medical Physics Expert, recorded in your local diagnostic reference levels.

A full colour display presents the active settings and machine state. Colour separates the fields on a control face carrying several variables at once, so the operator confirms kilovoltage, current and time together before triggering, with the unit already held in position.

Published distance from skin to cone is 130 mm. Raise that figure with your Radiation Protection Adviser during specification, since UK dental guidance sets minimum focus-to-skin distances that differ for equipment operating 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. The unit measures 110 × 140 × 165 mm and weighs 1.7 kg, with a moulded hand strap for single-hand carrying. Medigear.uk can arrange supply, delivery, commissioning, staff familiarisation and service cover for the SJD-121 across the United Kingdom.

Intraoral radiography carries the diagnostic load in UK general dentistry, and the SJD-121 is configured for that daily volume. It supports bitewing caries detection, periapical assessment of pathology, endodontic working-length and obturation verification, alveolar bone-level review, and root morphology assessment ahead of extraction.

Periodontal practice is a natural fit for the higher kilovoltage setting. Assessing crestal bone height, root surface and surrounding trabecular pattern from a single image asks the receptor to hold a wide span of densities, which is what a longer greyscale delivers. Serial comparison across recall visits is the clinical point, so consistent geometry and a documented protocol matter as much as the exposure setting itself.

Implant dentistry uses periapical views for site review, healing assessment and abutment-level verification. Those views sit alongside sectional imaging where three-dimensional anatomy is the question, under the justification framework of IR(ME)R 2017.

Endodontic practice makes heavy use of periapical views, with a single root canal treatment often needing a diagnostic film, a working-length film, a master cone check and a post-obturation view. Orthodontic practices use periapicals for root resorption monitoring through active treatment. Paediatric dentistry benefits from the lower milliamp steps and the 0.1 second timing floor.

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 makes spare pack availability worth settling before a domiciliary round, 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.

Kilovoltage as a diagnostic control

Two kilovoltage settings let a protocol match beam energy to the diagnostic question — higher subject contrast for caries assessment, a longer greyscale where a span of densities has to be read from one image. That is a clinical lever, agreed with your Medical Physics Expert.

Four fields confirmed in one glance

A full colour display separates kilovoltage, current, time and machine state visually, so all four are checked before triggering with the unit already held in position. On a machine with three operator-selected variables, that confirmation step earns its place.

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.

Suited to serial periodontal review

Bone-level assessment depends on comparing images across recall visits. Consistent output from the 30 kHz generator, combined with a documented exposure protocol, supports the repeatability that comparison requires.

Tube focus specified at order.

Focus is offered at 0.4 mm or 0.8 mm, chosen at order alongside working distance and receptor type — a specification decision your Medical Physics Expert can be part of at the ordering stage.

Carried by one clinician

At 1.7 kg and 110 × 140 × 165 mm, the unit sits comfortably within single-person handling for a full list or a community round, alongside whatever else has to travel.

Specification questions surfaced before order.

Focus-to-skin distance, cone options at 70 kV, total filtration and exposures per charge are worth settling in writing. Medigear.uk can arrange for the manufacturer's documentation on each to be requested with your quotation, so your Radiation Protection Adviser reviews it before commissioning.

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-121 across the United Kingdom, with site survey support where a practice wants the radiation protection conversation scoped before order.

Full colour display

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

Selectable tube voltage at 60 or 70 kV

Two kilovoltage settings give the operator a contrast control alongside the exposure product.

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 range

A twenty-fold span of exposure time covers direct digital sensors at the short end through to phosphor plate and 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.

30 kHz generator

High-frequency drive produces a steady output waveform through the exposure, supporting the repeatable receptor density that serial comparison depends on.

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.

Membrane control keypad

A sealed key array gives positive tactile feedback under 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.

Rated power 100–300 VA

Published power rating, useful when planning charging arrangements and assessing supply requirements at a site survey.

1.7 kg at 110 × 140 × 165 mm

Published weight and dimensions, the figures that determine whether one clinician can carry the unit through a full list or a community round.

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 surgery decontamination.

The Visionstar SJD-121 gives UK dental teams a 1.7 kg battery-powered X-ray generator built around a full colour display, 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, 30 kHz generator drive and a DC 14.8 V lithium pack. It fits NHS and private general practice, periodontal and implant work, endodontic and orthodontic clinics, 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.

Kilovoltage governs beam energy, and beam energy governs contrast. At 60 kV the beam carries a narrower energy range and produces higher subject contrast, which helps when the question is whether enamel is demineralised. At 70 kV the beam penetrates further and produces a longer greyscale, so a wider span of densities reads in one image. Neither is universally better; they answer different diagnostic questions. Agree the pairing of setting to view with your Medical Physics Expert and record it in your local diagnostic reference levels.

Field separation. A control face carrying kilovoltage, current, time and machine state at once is quicker to read when colour distinguishes those fields, so all four are confirmed in a single glance before triggering with the unit already positioned. On a machine where three exposure variables are operator-selected, that confirmation step is worth the moment it takes.

Periapical and bitewing views are the standard intraoral means of assessing alveolar bone levels, and this unit produces both. The longer greyscale available at the higher kilovoltage setting is useful where crestal bone, root surface and surrounding trabecular pattern all have to be read from one image. Paralleling technique and consistent geometry matter more than the machine here, since serial comparison across recall visits is the point of the exercise.

For the intraoral part of that work, yes — site review, healing assessment and abutment-level verification are all periapical tasks. Intraoral radiography gives two-dimensional information only, so where bone volume, nerve position or three-dimensional site anatomy is the clinical question, practices request sectional imaging alongside, in line with the justification requirements of IR(ME)R 2017.

Raise this before 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.

Focus is specified at order as 0.4 mm or 0.8 mm. Focus size governs geometric unsharpness at the receptor, so the choice interacts with your working distance, receptor type and the detail level clinicians need for endodontic and periodontal work. Discuss it with your Medical Physics Expert alongside your intended exposure protocols, and confirm the selection in writing on the order.

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. Request it at quotation along with spare pack availability and pricing, particularly if the unit is intended for domiciliary rounds.

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. Medigear.uk can arrange service cover and planned maintenance alongside supply.