There is a small tooth on the rug, a blood spot on a toy, and a table leg being eaten. It is reasonable to blame the mouth for all 3.
Some of it is the mouth. The part that outlasts the mouth is the part you can do something about at home.
What we will not print
You will find confident week-by-week tooth timetables online. We do not have a source we trust for one, so we will not hand you one.
The age the last adult teeth are through varies between dogs. Your veterinarian can look in your dog's mouth and tell you where your dog actually is.
That is a 2 minute question at an appointment you already have booked. It is a better use of your evening than reading 6 conflicting charts.
Mouth things, worth writing down
A tooth on the floor, or a gap where one was yesterday.
Blood spots on a toy or in the water bowl.
More drool than usual, or a smell from the mouth.
Chewing on one side only, dropping food, or pawing at the face.
Those are observations about a mouth, not a training list. The person who should hear them is your veterinarian.
How to tell the two apart without guessing at teeth
Write down the time and the object for a week. Chewing that clusters at the same hours is about the day your dog is having.
Hand over a chew your dog is allowed and watch what follows. Settling with it looks different from carrying on around the house.
Notice whether your dog is gnawing on one thing or moving from object to object looking for the next one.
Notice what stops it. A mouth that needs comfort and a dog with nothing to do are answered by different things.
Chewing that starts later, at 10 or 12 months old, is usually not about teeth at all. That version has its own article, and the answer there is a daily job for the jaw.
What to do this week, either way
Give the jaw something legal every day, on a safe chew too large to swallow whole, at the hour your dog usually starts.
Move the 3 objects your dog goes for. Every chewed table leg is practice.
Do not take chewing away without putting something else in its place.
Keep a chew in the room you sit in during the evening, so the habit has somewhere to land.
Behaviour change is built from management plus reinforcement together. Here the management is the 3 objects out of reach, and the reinforcement is the chew you hand over.
Do not tell your dog off for chewing. Punishment-based approaches are associated with fear, avoidance and defensive aggression, and a sore mouth is the worst place to add any of that.
Reward-based methods are what the veterinary behaviour guidance recommends for training and behaviour change. That holds whether the mouth is sore or not.
Safety note
Call your veterinary practice if your dog is dropping food, pawing at their mouth, drooling heavily, or has a tooth that has not come through. Sudden behaviour change warrants a veterinary examination, and pain frequently presents as a change in behaviour rather than as obvious lameness. A dog who has become snappy about their head or mouth being touched needs that appointment before any training.
Safety note
Call your veterinary practice now if a piece of a toy, a sock or a bone fragment has been swallowed. Say what it was and how big it was, and do not wait for vomiting.
Today's version, in one line: hand over one large legal chew at the hour your dog usually starts, and write down what they went for.