ZACK and EDDIE'S DENTAL NIGHTMARE (the original)

This is the conclusion of the DENTAL NIGHTMARE TRILOGY... A young teen, Zack and his older brother, Eddie, investigate the murders of Chad, Kenny and other teenagers that have been mysteriously dying in their sleep - apparently from fright, the night before they have dentist appointments. Zack and Eddie discover a cave in the woods where they are captured by a mad doctor and dentist and brought to a dungeon where their wildest dental fears and nightmares become a reality.