Comparison of the Delay in Processing Time and Protective Plastic Cases in Two Phosphor Plate Systems

Abstract

Objective. The purpose of this study was to analyze two phosphor plate systems (PSPs) (Dürr Dental, Digora Optime) according to their scanning delay and protective plastic case performances. Methods. Two PSPs using an aluminum step wedge were exposed. These plates were placed in three different protective plastic cases (manufacturers' original cases, black case, and white case) before obtaining the radiographs and were then processed immediately and 1, 5, 10, 30, 60, 120, 240, and 480 min after exposure. Mean gray values (MGVs) of the 3rd, 5th, 7th, and 9th steps of the wedges were compared using ANOVA. Results. Statistically significant differences were found between the two PSPs (P < 0.001). ANOVA revealed that the MGVs of four steps of the wedges were significantly different from each other for all scan delays (P < 0.001). MGVs increased with increasing scanning delay, except the group with Dürr plates in their original cases. Reduction in image quality began 5 min after exposure in the other Dürr plate groups. Conclusions. Within the limitations of the current study, it can be concluded that scanning delay causes a reduction in image quality, and using the manufacturer's original protective case will result in better performance of PSPs.

Evaluation of the Effect of Light and Scanning Time Delay on The Image Quality of Intra Oral Photostimulable Phosphor Plates

“…This trend was also found in some steps of step-wedges in other environments, which reflects the importance of time in scanning procedure. Although this finding is in accordance with a previous reports by Aktan et al [ 2 ], Sogur et al . [ 3 ], and Akdeniz et al .…”

“…Other advantages of PSP systems comprise being available in exactly the same size as conventional films having a wider dynamic range, which produces better quality radiographs compared with other digital sensors. The major drawbacks of PSPs are, the remaining energy is stored in the plate after scanning, lower quality owning to repeated applying, and handling and scanning of the plates are time consuming [ 1 , 2 ]. Size and flexibility of Storage phosphor plates (SPPs), is similar to that of conventional films, and undoubtedly have been regarded as one of the most proper alternates for conventional films with great diagnostic accuracy and broader latitude [ 3 ].…”

The Effect of Reciprocal Arm on the Supporting Structures of the Abutments in Cases Retained by Unilateral Attachment

“…Moreover, the sixteen inch long cone directed only parallel rays to the image plate, thereby preventing the magnification of the image. (19,20) When fixed partial dentures were not considered due to long edentulous span and when implants were also not considered as the patient was not ready for the surgical procedure. Therefore, attachments and cast partial denture were selected as the treatment of choice in order to achieve functional requirements in long term edentulous spans and distal extension bases.…”

Fosfor Plak Sistemlerinde Karşilaşilan Temel Sorunlar

“…Farklı koruyucu kılıfların plakların görüntü kalitesi üzerindeki etkilerinin incelendiği bir çalıĢmada; orjinal siyah kılıflar ile elde edilen görüntülerin orjinal olmayan kılıflar ile elde edilen görüntülerden daha iyi olduğu bulunmuĢtur. 13 FP'larında karĢılaĢılan diğer bir sorun ise piyasada mevcut olan koruyucu kılıfların çoğunluğunun plaklardan daha geniĢ olmasıdır. GeniĢ kılıf kenarları çekim sırasında plak sınırlarının tam olarak görülmesini engellediğinden çekimde hatalara neden olabilmektedir.…”

“…9 Ġki farklı FP sisteminin incelendiği baĢka bir çalıĢmada ise plakların taranmadan önce ıĢığa maruz kalması durumunda birinde 5 dakika, diğerinde ise 10 dakika sonrasında görüntü kalitesinde azalma olduğu bildirilmiĢtir. 13 Tüm bu çalıĢmalar ıĢığında FP'nın çekimi takiben mümkün olan en kısa sürede taranması, taramanın hemen yapılamadığı durumlarda ise plakların oda sıcaklığında, ıĢık almayacak Ģekilde saklanması önerilebilir.…”