Mouth spreader
Definition
A mouth spreader is a BDSMinstrument used to keep the mouth of the sub open, usually with metal or plastic clamps, rings, or adjustable brackets. The mouth spreader prevents the jaws from closing and is used in medical, erotic, or humiliation-oriented games.
Explanation of mouth spreader
The mouth spreader has its origins in medical instruments, where it is used to gain access to the oral cavity during dental or surgical procedures. Within BDSM, it has taken on a completely different meaning: it is a tool that literally and figuratively “opens up” the sub.
The experience of a mouth spreader is intense. Because the sub can no longer close their mouth, they lose control over facial expressions, speech, and sometimes even saliva – something that reinforces the feeling of powerlessness and humiliation. At the same time, the mouth spreader can have a strong erotic effect, especially in oral play, medical play, or objectification. For the Dominant, it is a visually powerful instrument: the mouth becomes an open entrance, a symbol of total surrender.
There are different types of mouth spreaders, including:
- O-ring spreader: a metal or silicone ring that is placed between the teeth and keeps the mouth permanently open.
- Jennings or Whitehead spreader: adjustable metal spreaders that originally come from the medical world, often with a screw mechanism.
- Lip or cheek hooks: hooks with rings or chains that pull the lips outward, commonly used in fetish photography or medical fantasies.
Some Dominants combine the mouth spreader with gags, masks, or medical play for added excitement or visual impact.
Safety & points of attention
The use of a mouth spreader carries serious risks and requires extreme care. The sub cannot swallow or breathe properly, especially during prolonged use. Always supervise and remove the spreader immediately in case of panic, coughing fits, shortness of breath, or nausea.
Never use spreaders that are too large: the jaw joint can become overloaded or even dislocated. Do not leave the mouth in an extreme position for too long and allow the jaw joint to rest afterwards by gently massaging it or closing it with support.
Clean metal spreaders thoroughly with a disinfectant suitable for medical steel. Use latex or nitrile gloves when inserting and take care not to damage teeth, lips, or gums.
Psychologically, wearing a mouth spreader can be intense: the combination of physical restriction, embarrassment, and surrender can be both exciting and confrontational. Good communication, trust, and aftercare are therefore essential.
Related terms mouth gag
Ball gag
Bit
Feeding gag
Gag
Inflatable gag
Jenning gag
Mouth gag
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