SIST EN ISO 3665:2013 PDF

Overview

EN ISO 3665:2013 (identical to ISO 3665:2011) defines manufacturer specifications for intra‑oral dental radiographic film and film packets. The standard establishes a classification system by film/process speed and film size, sets sensitometric and physical film characteristics, and specifies packaging, labelling and sampling/testing requirements. It applies to intra‑oral films for manual or automatic processing and excludes films intended for fluorescent intensifying screens or primarily viewed by reflected light.

Keywords: EN ISO 3665:2013, ISO 3665:2011, intra‑oral dental radiographic film, film packets, film speed, film size, sensitometric characteristics.

Key topics and technical requirements

• Film classification - Film/process systems are classified into speed groups (Table 1: D, E, F) with specified speed ranges (e.g., D 14.0–27.9; E 28.0–55.9; F 56.0–111.9 as given in the standard).
• Film sizes - Standard intra‑oral film size numbers (0, 1, 1A, 2, 3, 4, 4A, 5) with defined dimensions and corner radii.
• Sensitometry - Speed and average gradient requirements reference ISO 5799; average gradient must be greater than 1.50; uniform response to radiation is required.
• Physical limits - Maximum film thickness 0.25 mm; packet maximum thickness (excluding tab) 2.0 mm; packet dimensions limited to a small allowance over film size.
• Base plus fog density - Manufacturer limit at point of manufacture: ≤ 0.25; maximum used to set expiry date: ≤ 0.40.
• Packet construction & shielding - Light‑tight enclosure, provision for X‑ray attenuation (lead foil or equivalent) positioned to protect from backscatter; easy unwrapping and smooth rounded edges for patient comfort.
• Labelling & symbols - Use of medical device symbols per ISO 15223‑1; clear indication of radiation side (e.g., embossed dot).
• Storage, handling & expiry - Manufacturers must specify shipping/handling/storage conditions to maintain diagnostic quality up to the expiry date; background radiation can affect shelf life.
• Sampling & testing - Defined sampling plans and test methods for base plus fog, speed and gradient (refer ISO 5799); visual inspection rules.

Applications and users

• Manufacturers of dental radiographic film and film packets - product design, quality control, labelling and shelf‑life claims.
• Dental equipment and consumable suppliers - ensuring compatibility with processing equipment and clinical use.
• Dental clinics and radiography departments - procurement specifications and safe storage/handling.
• Testing laboratories and regulators - compliance testing, audits and device registration.

Related standards (referenced)

• ISO 5799 - Determination of ISO speed and average gradient
• ISO 8374 - Safelight conditions
• ISO 15223‑1 - Medical device symbols and labelling
• ISO 18906 - Safety film specifications
• ISO 5‑2 / ISO 5‑3, ISO 1, ISO 554 - Measurement and conditioning references

EN ISO 3665:2013 is essential for anyone specifying, manufacturing, testing or procuring intra‑oral dental radiographic film to ensure consistent image quality, safety and regulatory compliance.