Brushing a Shih Tzu’s teeth involves using a dog-specific enzymatic toothpaste and a finger brush in circular motions at the 45-degree gum line, with daily sessions lasting 30 seconds per side.
That bad breath your Shih Tzu has isn’t normal — it’s the smell of bacteria eating through the gum tissue that holds those teeth in place. Small breed mouths are crowded, which traps food and plaque faster than larger breeds, making them prone to periodontal disease. The good news is that regular brushing at home can prevent most of the damage before it starts, and the whole process takes about two minutes once your dog gets used to it.
Why Brushing a Shih Tzu’s Teeth Is Different
A Shih Tzu’s jaw is small and shallow. Standard dog toothbrushes are sized for Labrador-sized mouths and will trigger gagging or miss the back surfaces entirely. You’ll need a finger brush, a human baby toothbrush with soft bristles, or a dental wipe wrapped around your finger — anything that fits comfortably between the tiny cheek and the gum line.
Shih Tzus also have crowded teeth, meaning the outer surfaces do the heavy lifting for plaque removal. The tongue naturally handles the inner surfaces, so you only brush the outside.
What You Need to Start
Gather these items before you begin so the session goes smoothly:
- Dog-specific enzymatic toothpaste — human toothpaste contains xylitol and fluoride, both toxic when swallowed. Chicken, peanut butter, and mint flavors are available.
- Finger brush or baby toothbrush — soft bristles only. The brush head should be about the size of your thumbnail.
- Pea-sized amount of paste — more than that can cause gagging and is unnecessary for cleaning.
- Dental treats — for rewarding after each session, never before.
The Step-by-Step Process
Breaking this into two phases — desensitization and actual brushing — prevents the struggle that makes most owners give up by day three.
Phase 1: Desensitization (Days 1–3)
Your Shih Tzu needs to learn that fingers and brushes in the mouth mean treats, not restraint. Do not attempt a full brush until this phase feels easy.
- Wait until after a walk or play session when the dog is relaxed. Sit on the floor with the Shih Tzu on your lap.
- Rub your finger gently over the outer surfaces of the teeth and gums for 2–3 seconds. Reward immediately with a small treat.
- Repeat the gum rub several times over the next few days, gradually increasing contact time to 10 seconds.
- Put a tiny dab of toothpaste on your finger and let the dog lick it off. This creates a positive taste association.
- Once the dog happily licks toothpaste from your finger, put a dab on the brush itself and let the dog lick it off before inserting the brush into the mouth.
A common signal that the dog is ready: they stay still and wag while you touch their mouth instead of pulling away.
Phase 2: Brushing Technique
Once desensitization is complete, the actual brushing takes under 90 seconds total.
- Lift the upper lip gently with your index finger. Start with the front canine teeth — they are easiest to reach and least sensitive.
- Apply the pea-sized paste to the brush. Using circular motions at the gum line, brush the outer surfaces of the front teeth, then move to the back molars. Hold the brush at a 45-degree angle.
- Focus on the two smaller teeth behind the big back tooth — those are plaque hotspots that most owners miss.
- Pull the lower lip down gently. If the dog resists, tilt the head back slightly to access the lower teeth without forcing the jaw open.
- Brush the lower outer surfaces using the same circular motion.
- Continue for 30 seconds per side of the mouth. When the time is up, stop — even if not every tooth got equal attention.
- Finish with a dental treat and praise immediately. This associates the whole process with a reward.
Common Brushing Mistakes to Avoid
Most owners who give up on dental care hit one of these problems first:
- Using a standard dog toothbrush — too large for a Shih Tzu’s mouth. Switch to a finger brush or baby toothbrush immediately.
- Brushing the inside surfaces — unnecessary. The tongue does that job, and pushing a brush inside the mouth stresses the dog without benefit.
- Brushing less than every 72 hours — plaque hardens into tartar within three days. Once tartar forms, only a veterinarian can scrape it off. Daily brushing prevents this cycle.
- Skipping the back molars — those are the most common spot for periodontal disease in Shih Tzus. Make them the priority, not the front teeth.
- Forcing the mouth open — if the dog clamps down, stop. Forcing creates a negative association that sets training back by days. Try again later when the dog is calmer.
What Works and What Doesn’t for Shih Tzu Teeth
The table below shows the tools and approaches that actually get the job done for this breed:
| Tool or Method | Best For | Why It Works |
|---|---|---|
| Finger brush | Beginners, anxious dogs | Fits the Shih Tzu mouth size; gives you tactile feedback on tooth surfaces |
| Baby toothbrush (soft) | Thorough cleaning | Bristles reach the gum line crevice that finger brushes sometimes miss |
| Dental wipe wrapped around finger | Tarter buildup, older dogs | More abrasive than rubber bristles; good for dogs who won’t tolerate a brush handle |
| Water additive | Maintenance between brushing | Reduces bacteria in the mouth but does not physically remove plaque — never replaces brushing |
| Dental treats (VOHC-approved) | Daily reward, light plaque control | Mechanical abrasion from chewing helps, but only on the surfaces the treat touches — not the back molars |
| Enzymatic toothpaste | All dogs | Enzymes break down plaque chemically as you brush; safe to swallow |
| Human toothpaste | Never | Xylitol and fluoride cause vomiting, seizures, and liver failure in dogs |
Brushing Schedule That Matches Real Life
The veterinary ideal is daily brushing, but real life with a Shih Tzu means some days just won’t happen. The critical threshold is every 72 hours — that’s the window before soft plaque hardens into tartar that requires a professional dental cleaning under anesthesia.
If you brush Monday morning and Friday morning, you have already passed the 72-hour mark. A more realistic schedule for most owners: brush Monday, Wednesday, and Friday, plus a dental treat on the off days. That covers the week without setting an impossible daily standard that gets abandoned after two weeks.
For the readers ready to find the right tools for their setup, our roundup of the best brushes for Shih Tzu mouths covers finger brushes, baby brushes, and dental wipes that fit this breed’s specific jaw dimensions.
What to Expect as Your Shih Tzu Gets Used to It
The first week is the hardest. Your Shih Tzu may squirm, turn the head away, or clamp the mouth shut. These responses are normal and fade within 5–7 short sessions if you keep them positive. If the dog resists at the brush insertion step, go back to having the dog lick toothpaste off the brush for a few more days before attempting insertion again.
Signs the dog is accepting the routine: the tail stays relaxed during brushing, the dog voluntarily approaches when you pick up the toothpaste, and the mouth stays slightly open as you work. At that point, you can increase the 30-second timing to a full 45 seconds if needed.
When to See the Vet Instead of Brushing
Do not brush if you notice any of these conditions — brushing can worsen them:
- Loose or wobbly teeth (likely advanced periodontal disease)
- Bleeding gums that don’t stop after a day of rest
- Swelling or lumps along the gum line
- Bad breath that persists even after brushing (sign of infection below the gum line)
These symptoms indicate that a veterinary dental cleaning (prophylaxis) is needed first. After the teeth are professionally cleaned and any extractions are done, home brushing can keep the mouth healthy going forward.
FAQs
Can I use human toothpaste in an emergency?
No. Human toothpaste contains xylitol, a sweetener that causes rapid insulin release in dogs, leading to dangerously low blood sugar and potential liver failure. Even a single exposure can be toxic. Keep dog-specific enzymatic toothpaste on hand before you start the routine.
How do I get my Shih Tzu to stop biting the toothbrush?
Biting the brush usually means the dog is not fully desensitized yet. Go back to letting the dog lick toothpaste off the brush without inserting it, rewarding calm behavior, for several more sessions. Once the dog stops viewing the brush as a chew toy, you can gently insert it between the cheek and teeth.
Is it too late to start brushing an adult Shih Tzu?
It is never too late, but an adult dog with no brushing history will need a longer desensitization phase — sometimes two weeks instead of three days. Start with the finger-rub step and move slowly. If the gums bleed during the first session, stop and try again the next day, as it often indicates existing inflammation that brushing will improve.
How often should I replace the brush?
Replace finger brushes and baby toothbrushes every three months, or sooner if the bristles fray or the rubber surface shows wear. A worn brush cannot effectively remove plaque and may irritate the gums.
Do dental chews alone keep Shih Tzu teeth clean?
No. Dental chews only clean the surfaces they contact — usually the front teeth and the sides of the premolars — and cannot reach the back molars or the gum line. They are a useful supplement but should not replace brushing, especially in a breed crowded with plaque-trapping gaps.
References & Sources
- PetMD. “Dog Dental Care: 6 Ways to Keep Your Dog’s Mouth Clean.” Covers toothpaste toxicity and general brushing guidelines.
- VCA Animal Hospitals. “Brushing Teeth in Dogs.” Official step-by-step brushing protocol.
- PetLab Co. “Shih Tzu Teeth — The Complete Guide.” Breed-specific dental care details.