Continuity mistake: When Brooke gives Dr. Feinstone the diamond cufflinks, and then when they kiss, a few times Dr. Feinstones yellow tie jumps over / under his collar. (00:05:30)
Continuity mistake: When Candy and Jessica are waiting for Dr. Feinstone, a clipboard on the counter beside Jessica appears / disappears / reappears. (00:11:10)
Continuity mistake: After Dr. Feinstone makes Jody's teeth bleed, the flower necklace around his neck disappears / reappears from shot to shot. (00:20:35)
Continuity mistake: When Steve Landers gives Sarah his agent card, the way Sarah holds the card changes a few times between shots, through the scene. (00:27:40)
Continuity mistake: When Dr. Feinstone is gasing April Reign, when he pumps up the nitric oxide much higher than he should, the white gas tube in her mouth disappears / reappears a few times between shots. (00:29:35)
Continuity mistake: When Dr. Feinstone goes to get April's heels, he tosses the pantyhose aside, on the floor. Later, when Jessica is in the room, and finds them, they are in a completely different position. (00:34:35 - 00:35:25)
Continuity mistake: When Brooke shows up after Dr. Feinstone's work, for their anniversary, she enters the opera room. She is wearing a black shawl over her shoulders, which constantly changes position from up / down. (00:42:30)
Continuity mistake: When Jessica confronts Dr. Fenistone in the doorway, which shoulder her ponytail hangs over changes between shots through the scene. (00:55:55)
Continuity mistake: Near the end of the movie, as Dr. Feinstone chases Sarah around the dentistry, the position of Sarah's pin-on bib which she wears, continuously changes. (01:12:40)
Continuity mistake: When Dr. Feinstone is struggling to get Sarah, and Mr. Goldblum starts to attack Feinstone, between shots the position of Karen's head changes, as she lies dead on the floor. (01:16:20)
Other mistake: When the dentist is doing Jody's teeth, any time they are showing the reflection of his teeth through the tooth mirror, you can tell those are not the teeth of a little boy but those of an adult.