Stained Teeth
Replaces your character and other NPCs' normal teeth/stained teeth.
or you can rename the texture to the one you want to replace.
mouthhuman_d -> normal teeth
mouthhuman2_d -> stained teeth
mouthhuman3_d -> rotten teeth
and put it in Textures\Actors\Character\humancommon folder
Installation:
1. Copy the content into Data folder. [yourgamepath]\Fallout 4\Data
2. Edit the Fallout4.ini file in your C:\Users\[username]\Documents\My Games\Fallout4
Under [Archive] add/modify this line
sResourceDataDirsFinal=STRINGS\, TEXTURES\, MESHES\, INTERFACE\, MUSIC\, SOUND\, PROGRAMS\, MATERIALS\, LODSETTINGS\, VIS\, MISC\, SCRIPTS\, SHADERSFX\