트랜스폼 열별형 폴리퍼 인상트레이 제품 평가

The ADAPT Evaluation

Transform impression trays

Chairman Howard Stean and Robert Brody of ADAPT, present the group’s clinical evaluation of Transform mouldable plastic impression trays.

Transform impression trays by Astek Innovations, are marketed as part of the Pegasus range of dental products. The advantage of the trays is that they are adaptable for situations where standard shaped trays would not be suitable.

아스텍 이노베이션이 개발한 트랜스폼 트레이의 장점은 상황에 따라 트레이의 모양을 변형할 수 있다는 점이다.

 

The trays may be moulded by immersion in hot water at 70 °C for 20 seconds, which softens the plastic prior to reshaping the edges and general shape. on cooling the tray hardens and will retain its shape. They may also be trimmed or added to marginally as normal.

트랜스폼 트레이는 약 70도의 물에 20초간 담근 후 모양을 형성할 수 있으며 실온에서 약 10초 후 원래의 경도로 단단해 진다. 필요한 경우 트레이를 잘라서 사용할 수도 있다.

 

ADAPT has been asked to evaluate these trays in dental practice. ADAPT evaluators used the trays for a variety of clinical applications and also undertook some laboratory testing.

ADAPT 평가단은 트렌스폼의 다양한 임상적용을 위한 테스트와 실험실 테스트를 진행했다.

 

The laboratory testing was designed to monitor such alteration in shape, principally for stability of the change, as any rebound will distort the impression and ruin the subsequent laboratory items made from the resultant work model.

실험실 테스트는 모양을 바꾸과 트레이의 변형을 관찰 하였다.

 

The immediate feel of the trays was that they are strong and firm and inflexible. The trays come in sets of six sizes, for each of dentate and edentulous impressions.

트렌스폼은 강하고 견고하며 유연하다. 트랜스폼은 여섯가지의 사이즈로 구성되며 유치악/무치악으로 구성되어 있다.

 

Basic design

The retention perforations seem very adequate whilst not weakening the rigidity of the tray. There is a ridge along the edges that may have been designed to enhance the edge-strength although the trays may be trimmed if overextended at any point. one evaluator felt that if the ridge had been rather than on the external surface, on the inner surface it may have further enhanced retention of the impression material, as is the virtue of the rim-lock tray design.

Perhaps patent aspects are involved in this.

There is an excellent video describing the use of the tray (Click Here).

트랜스폼의 유지력을 위한 홀들은 트레이의 견고함에 영향을 미치지 않는다.

Laboratory test

A lower dentate tray was used in this test. Each end of the tray in turn was immersed in hot water and became softened within 20 seconds. one end was squeezed together and the other end was expanded. After 10-15 seconds the tray had cooled and felt rigid again.

There are regular indentations in the edge-ridge. These were marked to reference the measurement points and immediate measurements were noted. The initial width of the tray was 20mm at point of measurement. Following the adaptation as described above, one side was reduced to 14mm and the other expanded to 27.5mm, measured with a digital caliper/micrometer.

The measurements were repeated daily for one week and again after two weeks. The trays remained exactly stable throughout the test period and completely reliable following heat modification. The developers of this tray have found a plastic that has excellent thermoplastic qualities that are ideally suited to their purpose.

트레이 변형후 일주 이주 간격으로 치수를 측정하였다. 트랜스폼은 열변형후 테스트 기간동안 체적변화 없이 안정적이었다. 트랜스폼 트레이의 개발자가 뛰어난 품질의 플라스틱을 사용한 것이다.

Clinical evaluation procedure

A team of ADAPT dentists agreed to use the trays in general practice.

They were for a selection of treatment impressions including alginate and also synthetic elastomeric materials. No adhesives were routinely applied, as the perforations are designed to retain materials securely.

Where applicable tray margins were altered using the correct procedure. Some evaluators made use of an electrically heated water bath set to 70°C.

No problems were found with results from the impressions, and there were no complaints from patients about ill-fitting trays.

인상채득결과에서 어떤 문제를 발견하지 못했다. 또한 잘 맞지않는 트레이로 인한 환자의 불평도 없었다.

 

One evaluator commented that a tray was successfully adapted to avoid a bony torus, which was considered to be an advantage to the extent that a special tray was not needed.

평가자중 하나는 특별한 개인트레이를 만들필요 없이 트랜스폼  트레이가 bony torus가 있은 경우 매우 유용하다고 했다.

 

Another evaluator used a tray for the pick-up of an implant impression coping. It is usual to drill a hole in a tray to permit the coping to be undone after setting of the impression material. It was found that some ‘healing’ of the plastic occurred when the position of the hole was somewhat varied by drilling laterally. This was also thought to be an advantage.

또다른 평가자는 트레이에 구멍을 낸 후 임플란트 픽업인상에 사용했다고 한다.

ADAPT opinion

Overall the trays performed well, with no problems noted over a period of several weeks’ use.

ADAPT can recommend use of the Transform trays to colleagues.

전체적으로 트레이의 성능이 우수하며 수주간의 사용에도 어떤 문제를 발견하지 못했다. ADAPT는 치과의사 동료들에게 트랜스폼 트레이을 사용할것을 권장한다.

 

 

Howard Stean BDS LDS MGDS RCS is the chairman of ADAPT. He is an author and lecturer, and visiting professor in restorative dentistry, University of Havana, Cuba. He has a practice in Kew, South London. ADAPT (Aesthetic Dentistry and Professional Testing) is a team of highly trained dentists who share an interest in developing state-of-the-art advances in dental care, its members are in the forefront of using and reporting on new products and clinical techniques. www.adaptuk.org