Shih Tzu puppy dental gel before teeth come in

A 4-month-old Shih Tzu is at a really important window — the baby teeth are still coming out, the adult teeth are just starting to push through, and the habits you build right now will shape their dental health for life. Small breeds like Shih Tzus are genuinely at higher risk for dental disease because their teeth are often crowded into that flat, compact jaw, which means tartar builds faster and gum disease can take hold early. Dental disease is also one of the most common causes of chronic pain in dogs that owners don't spot — because dogs are very good at hiding it. Your breeder is right to bring this up early. Before I point you to something specific — has the vet had a look yet, and is your pup letting you near their mouth at all, even just for handling?

Your breeder is giving you exactly the right advice. At 4 months you're not trying to do a proper clean — you're just building the association that mouth-touching is normal and not scary. A gel is perfect for this stage because you don't need a brush yet. You can put a tiny amount on your finger and let her lick it, then gradually work your finger along the gum line. The goal right now is tolerance, not thoroughness. What I'd recommend is Beaphar Dental Gel — it's an enzymatic gel, which means it works by chemical action even without much rubbing, and the poultry flavour means most puppies accept it readily rather than fighting it. It's suitable from puppyhood and widely used in exactly this kind of early habituation. One small tube will last you well into the adult teeth stage.

Don't wait — this is actually the ideal time. The teething process itself causes some gum inflammation and sensitivity, and getting a gentle enzymatic gel on those gums now helps keep bacteria down while the tissue is disrupted. More importantly, you're building the handling habit during a phase when she's already used to her mouth feeling a bit strange, which makes her far more likely to accept it as normal. If you wait until the adult teeth are fully in, you've missed the easiest window. Just be gentle around any teeth that are visibly loose, and don't force anything — keep sessions to about 20 seconds, make it positive, and stop before she gets frustrated.

For a 4-month-old, the gel plus daily handling is genuinely enough. The one other thing worth doing now is introducing a finger brush alongside the gel — not to brush properly yet, just so she gets used to the sensation of something rubbing on her teeth. Beaphar also do a finger brush that works well with the gel. By the time her adult teeth are fully in around 6–7 months, you'll have a dog who barely notices tooth brushing, which is the best possible outcome for a Shih Tzu. Schedule that first vet dental check around the 6-month mark so they can confirm the adult teeth have come in cleanly — retained baby teeth are common in the breed and sometimes need to be removed.