ISO 3665:2011建立了一个根据胶片/处理系统的速度和胶片尺寸对口腔内放射胶片进行分类的系统。它规定了胶片/工艺系统的感光特性、胶片和包装的物理特性，并描述了包装和标签要求。 ISO 3665:2011适用于手动或自动处理的口腔内牙科射线照相胶片。它不适用于使用荧光增感屏曝光的胶片，或主要通过反射光观看的胶片。

ISO 3665:2011 establishes a system for the classification of intra-oral radiographic film by the speed of the film/process system and by the size of the film. It specifies the sensitometric characteristics of the film/process systems, the physical characteristics of the film and packets, and it describes packaging and labelling requirements. ISO 3665:2011 is applicable to intra-oral dental radiographic film for manual or automatic processing. It does not apply to films intended to be exposed with fluorescent intensifying screens, or films intended to be viewed primarily by reflected light.