Short answers, pulled from the story.
Evidence spans from the Old Kingdom through the Roman Period, showing consistent belief in restoring senses for the afterlife. Early practices focused on statues rather than physical corpses during the Old Kingdom era.
An arm-shaped ritual censer called the adze touched eyes and mouths to restore individual senses. Forked blades made of obsidian glass or stone formed the peseshkef tool used in ceremonies.
Evidence shows seventy-five distinct acts required during the full opening of the mouth ceremony sequence. Episodes one through nine involved preliminary rites preparing participants for subsequent stages.
If physical bodies were destroyed or unretrievable statues served as acceptable replacements according to belief systems. This substitution method ensured rituals continued even when mummified remains were unavailable for direct application.
Priests of Anubis perform the opening of the mouth ritual in a scene from the Papyrus of Hunefer dated to approximately 1300 BCE. One priest wore a jackal mask representing Anubis god of tombs and embalming.