Sensitometric evaluation of four dental X-ray films using five processing solutions

Area of Science:

• Radiology
• Dental Imaging
• Sensitometry

Background:

• Dental radiography relies on film-processing techniques to visualize oral structures.
• Optimizing film speed and processing is crucial for diagnostic quality and patient safety.
• Evaluating new dental films and processing solutions aids in adopting dose-reduction strategies.

Purpose of the Study:

• To compare the sensitometric properties of Kodak Ektaspeed Plus, Kodak Ultra-speed, and two Agfa Dentus M2 dental films (new and previous).
• To evaluate these films across five distinct chemical processing solutions, including manual and automatic options.
• To identify optimal film-processing combinations for diagnostic efficacy and radiation dose reduction.

Main Methods:

• Characteristic curves were generated for four dental X-ray films.
• Films were processed manually using Agfa, Kodak, and Demat chemicals.
• Films were processed automatically using Dürr XR and Periomat chemicals.
• Statistical analyses (ANOVA, regression) identified factors influencing film density.

Main Results:

• The new Dentus M2 film demonstrated a higher speed and lower base-plus-fog compared to the previous version.
• All tested films exhibited increased speed and decreased gradient when processed with automatic solutions.
• The Dürr XR processing chemicals yielded the highest film speed among all tested combinations.
• New Dentus M2 film showed comparable speed to Ektaspeed Plus when using automatic processing chemicals.

Conclusions:

• The new Agfa Dentus M2 film is an E-speed film, suitable as an alternative to Kodak Ektaspeed Plus.
• Both Agfa Dentus M2 and Ektaspeed Plus films are recommended for dental practice due to their dose-reduction potential.
• Processing solutions significantly impact film sensitometric properties, influencing diagnostic outcomes and radiation exposure.