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Dildo

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Rubber dildos, usually incorporating a steel spring for stiffness, became available in the 1940s. This was a less than satisfactory arrangement because of the potential for serious injury from cuts from the spring when the rubber finally cracked and came apart.

Later, PVC dildos with a softer PVC filler became popular. Most of the inexpensive dildos sold today are made this way.

PVC and jelly-rubber toys have often been found to be problematic because they contain unsafe phthalates, softeners added to many plastics that are also found in some jewelry, food containers, and other soft rubber toys. Phthalates have been linked to health problems such as cancer and prenatal defects. Products made of PVC or jelly rubber cannot be sterilized. Manufacturers recommend using condoms with these toys if users share them.

In the 1990s, silicone rubber dildos became more popular, a trend that has continued as the prices have lowered. These are easier to clean and do not have the characteristic plastic aroma of PVC. They were expensive when introduced but are now reasonably priced, making them an excellent choice for the first-time user. Silicone holds body heat well, and is an excellent conductor of vibrations, allowing users to hold a vibrator at one end. Silicone is also a robust material (especially when compared to the cheap, unsafe jelly rubber that many dildos are made of) that can be sterilized by boiling or bleaching (using a bleach solution, diluted: 10% bleach 90% water).

High-end, chrome plated steel dildos are also popular in the BDSM scene. Some users prefer them because of their hardness, firmness, durability, electrical conductance (see erotic electrostimulation), and low friction, especially when used in conjunction with lubricant. Because they are heavy, they can be used to exercise vaginal PC muscles. (Betty Dodson's "barbell" is an example.)

A steel dildo may be warmed or cooled in water before use to elicit a range of temperature sensations. It may also retain body heat of the user. Because of its polished nonporous surface, it may be sterilized in boiling water, or in an autoclave.

Glass dildos have similar features to steel ones. In most of the cases, glass toys are solid, and made of Pyrex or other types borosilicate glass (Schott-Duranglas and Simax), although this may vary, depending on the manufacturer. Like steel, glass toys may be used to apply firmer pressure than silicone can to a female's G-spot (urethral sponge) or male's prostate gland. Unlike other types of toys, glass sex toys can also be personalized with inscriptions.

Cyberskin is a synthetic material that feels more like human skin. It is a porous material and cannot be sterilized. It often gets sticky after washing (which can be remedied by a dusting of cornstarch) and is more delicate and more prone to rips and tears than silicone dildos. "Packing dildos", which are not designed for penetration, are often made of this material.

Phallus-shaped vegetables and fruits, such as banana or zucchini have even been used as dildos, possibly since prehistory. Smooth rocks of phallic shape are suited to use as a dildo. Any object of sufficient firmness and shape could be hypothetically used as a dildo.

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Det finns en svensk version av wikipedia också, om du inte visste det[zzz]
Tidiga dildos var gjorda av sten, trä eller keramik. Under 1940-talet kom en variant av gummi med en stålfjäder inuti. Mer moderna material som PVC och jelly är styvare. De innehåller dock mjukgörare, ftalater, varför det befaras att de innebär en hälsorisk. Det finns även dildos utan mjukgörare.

Dildos av silikon är dyra men mycket hygieniska, då de har en porfri yta, och kan både frysas och kokas.

Det finns även dildos av rostfritt stål som av vissa uppskattas för sin tyngd eller möjligheten att värmas eller kylas. Dessa är även lämpliga för elektrostimulation. Även dildos av glas förekommer, ofta i fantasifulla former.

Formen är vanligtvis penisliknande, mer eller mindre realistisk, men i exempelvis Japan utformas de som seriefigurer för att undgå lagar som förbjuder obscena varor.

Specialvarianter som är vanliga är analpluggen, dubbeldildon - som kan användas av två personer samtidigt - och strap-on dildon. Den senare monteras i ett speciellt bälte på en kvinna som därefter kan penetrera sin partner - kvinna eller man. En dildo kan även sättas fast på låret med en rem eller på en blank yta med hjälp av en sugkopp.

Dildos specifikt avsedda för anal stimulering har i många fall mer eller mindre tydligt framträdande kulor längs hela eller större delen av sin längd.