by copper November 14, 2005

Someone who disagrees with something that is widely accepted by others, seemingly for no reason. The word comes from toothpaste advertisements, which often claim that "Nine out of ten dentists" recommend using their brand of toothpaste.
Mark: "I was making plans with the boys, but Adam kept arguing about all of our plans even though everyone else was on board."
Craig: "Man, the tenth dentist really had to go and ruin the fun for everyone, huh?"
Craig: "Man, the tenth dentist really had to go and ruin the fun for everyone, huh?"
by dKoschei August 15, 2019

The time period, usually a week to a month, after a dentist's appointment where you actually brush your teeth three times a day, floss, and use mouthwash. After this time period, one goes back to their old ways of dental hygiene.
by EthanO May 7, 2011

To wipe your ass with someone's toothbrush
by SlimGravy January 6, 2010

The 10th dentist: I do not recommend ‘Crest 3D whitening toothpaste’. I also love eating candy corn!
by thedomobud September 12, 2022

Trash dentist is a character in the song novacaine by ghost and pals and creep-p, Trash dentist has no official gender, trash dentist is the worst dentist ever even ripped tooth HURTYS jaw off
by Koi.cos December 27, 2021

by i am McLovin March 16, 2013
