Gear Tooth Strength Analysis
http://www.faculty.fairfield.edu/wdornfeld/ME312/ToothLoads04.pdf

DENTAL NUMBERING SYSTEMS PERM
http://www.americantooth.com/downloads/instructions/Dental_Sys_Permanent_Teeth.pdf

Tooth Eruption
http://pacificdds2009.com/courses/Q2/human_anatomy2/concise%20oral%20histo/9%20Tooth%20Eruption.pdf

Treating Sensitivity During Tooth Whitening
http://www.vanhaywood.com/articles/pdf/D551%20GSK_Haywood.pdf

621.833.1 UDC - DIN ash Tooth Thickness Allowances 3967
http://down.bzxzw.com/DIN/DIN%203967-1978%20ENG.pdf

Population study showing that without tooth brushing
http://www.broxo.com/en/clinical_studies/downloads/population_study.pdf

Opalescence® 35% Tooth Whitening System
http://www.ultradent.com/products/instructions/opal_35.pdf

EHCB 5(2) - Dental restoration
http://www.york.ac.uk/inst/crd/EHC/ehc52.pdf

Gears, Couplings and Shaft Accessories
http://bibliotheque.mecaniqueindustrielle.com/manuels-pdfs/catalogue_engrenages_accouplements_arbres_accessoires_boston_gea...