Assistant District Attorney Christopher Rooney produced evidence showing that two months after Poles was arrested, he had dental work done in prison.
The records, however, did not indicate what type of work was done on Poles' teeth.
The jury returned a verdict late Monday.
A police officer who arrested Poles testified he could not recall whether Poles had a space between his teeth.
Moore said yesterday that while Poles was in prison, the victim identified another man as her attacker, mistakenly believing Poles had been freed on bail.
The woman said after she was kidnapped, she was driven to the parking lot of the Overbrook train station, where her assailant placed a gun at her head and "pulled my hair and said, 'You're gonna do what I tell you.' "
The jury acquitted Poles on charges of rape, kidnapping, aggravated assault and terroristic threats.
Poles, of Montgomery Avenue near 54th Street, remains jailed, awaiting sentence on a burglary charge. He recently completed a short prison term for a robbery in Lower Merion Township, according to Rooney.