A jury has found a Perth dentist guilty of drugging and raping women he met through dating apps.

The WA District Court had heard that Farzam Mehrabi put drugs into his victims' drinks without their knowledge before sexually assaulting them.

Mehrabi's trial started in early August, with the dentist facing 22 charges, including sexual penetration without consent, stupefying in order to commit an indictable offence, and impeding someone's normal breathing.

The offences occurred in February and March in 2022.

He was found guilty of stupefying and raping three women, raping two further women and stupefying another. 

Mehrabi was captured on CCTV in bars, putting drugs into the drinks of women he was dating.

One of those women, who had found him on Tinder, said she experienced blurred vision after drinking a martini, and remembered she "didn't really like the taste".

She was later raped at Mehrabi's home, where he choked her without her consent.

Another victim told the court Mehrabi told her "he had the best MDMA" and she had some with him.

But she said that on another occasion she had been drinking with Mehrabi in his garden before she started seeing in "fours" and vomited.

She said she then blacked out and could not remember anything until she woke in his bedroom the next day, and later discovered injuries on her body.

She went to police and they recorded a phone call with Mehrabi, who claimed they had got drunk before having consensual sex outside.

Media report caused victim to come forward

Another victim came forward after seeing some media coverage saying "Perth dentist accused of spiking drinks".

The urine sample of a woman who was not assaulted, but who had her drink spiked, showed MDMA, methylone and methylamphetamine.

The court had been told Mehrabi often talked about drug use, particularly MDMA.

His defence was that none of the sex was without consent, and he liked to be dominant with his partners.

The victims were aged in their late teens and early 20s, and the 34-year-old denied he was trying to deceive anyone by lowering his age on dating apps and targeting younger women.

Mehrabi was found guilty of 21 of the 22 charges the jury was considering, and found not guilty of one of the stupefying charges. 

He had already pleaded guilty to two charges of supplying a prohibited drug and one charge of offering to sell or supply a prohibited drug.

Two of the women had not been assaulted, but told the court they had been drugged by Mehrabi.

Mehrabi was remanded in custody and will be sentenced on December 17.

Judge Troy Sweeney approved the release of footage showing Mehrabi spiking drinks to the media because she said there was an educational aspect for the public.