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Sippy Cup TeethSippy cups and teeth

Moving to an Open Cup

By the Sippy Cup Teeth editors / / 2 min read

Short answer. A gradual transition to open cup drinking is something many dental and pediatric groups encourage as children approach their first birthday and beyond, because open cups encourage quicker sips than valved sippy cups. Start with small amounts of water, expect spills, and ask your dentist or pediatrician about timing for your child.

Key points

  • Many groups suggest introducing an open cup around a child's first birthday, so ask your pediatrician about timing.
  • Open cups tend to mean quicker sips, which can be easier on teeth.
  • Spills are part of learning, so start with small amounts of water.
  • Using a straw cup is one alternative step some dentists mention.
  • Your dental team can help if weaning feels stuck.

Why bother moving on from the sippy cup?

A sippy cup is a useful bridge, but a child who sips slowly from a valved spout keeps liquid in the mouth for longer. Open cups, and often straw cups, make it easier to take a drink and be done.

Drinking from an open cup also helps children practice the mouth movements they use for eating and speaking. Dental groups often encourage the shift, though the exact timing varies by child.

When to start

Many pediatric and dental sources suggest introducing an open or straw cup somewhere around a child's first birthday, alongside or in place of bottle use. There is no single correct day, and development differs from child to child.

If you are unsure, ask your pediatrician or dentist at a routine visit. They can look at your child's habits and suggest a reasonable pace for the transition to open cup drinking.

Making the first tries easier

Begin with a small cup, a small amount of water and a calm moment, such as sitting in a high chair. Help the child hold it, tilt it gently and let them take small sips.

Expect messes. A tray, a bib and a towel help, and so does keeping the first attempts short. Some families practice in the bath or outdoors to take the pressure off.

What to do about spills and frustration

Spills are normal and rarely last. Cups with two handles, a weighted base or a short fill level can help, as can letting your child watch you drink from your own cup.

If a child gets upset, stop and try again later rather than going back to a full-time sippy cup. Short, relaxed practice usually works better than long battles.

Straw cups as a middle step

Some dental professionals suggest straw cups as a step between a sippy cup and an open cup, because the child can drink without tilting the head and the liquid does not pool in the mouth the way it can with a spout.

Whether that suits your child is something to raise with the dental team. Either way, the same rules apply: water between meals, and juice or milk with meals.

If weaning feels stuck

Some children hold on to the sippy cup for comfort. That is common, and it is worth asking the dentist or pediatrician for tips that suit your child.

A supplement is not part of this. If you are curious about oral probiotics, one example is ProDentim, which the seller describes as a chewable oral probiotic supplement. The seller's claims have not been verified here and research on oral probiotics is still early and mixed. Anyone who is pregnant, breastfeeding, taking medicines or has a medical condition, and any parent considering something for a child, should ask a dentist, doctor or pharmacist first.

Questions readers ask

What if my child refuses the open cup?

Take a break and try again in a few days, keeping the first attempts short and calm. Your pediatrician or dentist can suggest ideas if refusal continues.

Are training cups with valves okay?

They can be a stepping stone, but valved spouts can encourage slow sipping. Ask the dental team how long to keep using one.

Do I need to take the sippy cup away completely?

Not overnight. Many families phase it out, starting with meals, and dental teams can help plan a pace that suits your child.

Talk to a professional. Persistent bleeding, pain, swelling, loose teeth or sores that do not heal need a dentist's attention, not a supplement.

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