Chewing Before Talking: How Teethers Support Oral Motor Skills
Short answer
A teether gives a baby a safe object to bite against, which trains jaw stability, tongue movement and oral sensation — the same foundations speech uses. It does not teach language, and no study shows teethers speed up speech. Its job is practice and comfort; speech comes from hearing, interaction and time.
Why this article separates “practice” from “outcome”. Most parent-facing content claims teethers “boost speech”. The developmental evidence does not support that claim. What it supports is narrower and more useful: chewing builds oral motor control, and oral motor control is one input to articulation. Everything below stays inside that boundary.
The chain: suck, mash, move sideways, rotate, bite
A newborn gets food by sucking. A one-year-old rotates a jaw around a piece of cooked carrot. A few months later he says “mama”. These look unrelated, but inside the mouth they are three positions on one motor chain.
The order matters because each stage borrows from the one before it. Munching needs a jaw that can hold still. Tongue lateralisation needs a jaw stable enough that the tongue can move without dragging the whole head. Rotary chewing needs both sides of the jaw working independently of the trunk.
Sucking
Front-to-back tongue wave, tongue-to-palate seal, and a suck–swallow–breathe rhythm of roughly one cycle per second.
Munching
Up-and-down jaw movement only. Gums mash soft food instead of grinding it. This is chewing’s first shape, and it runs on the bite reflex — pressure on the back gums triggers a bite.
Tongue lateralisation
The tongue starts moving food from the centre of the mouth to the sides, towards the gums. Full lip closure also settles around this window, which is when lip-to-lip sounds start showing up in babble.
Rotary chewing
The jaw begins a circular or diagonal path, with both sides contributing. ASHA’s feeding milestones place “begins chewing food on both sides of mouth — called rotary chewing” in this band.
Controlled biting
Biting and releasing becomes graded and separated from the rest of the body. The jaw stops being all-or-nothing and starts producing force in steps.
Refined tongue and lip control
Tongue tip elevation, gathering a bolus, lip closure during chewing, and chewing firmer and juicier textures without choking.
The part parents miss. A skill that is available but never used does not mature on schedule. Feeding clinicians describe the same pattern repeatedly: children who stayed on smooth purées well past twelve months often struggle later with lumps and mixed textures — not because the muscles are weak, but because the pattern was never rehearsed while the reflexes that support it were still active.
Five things happening inside the mouth
“Oral motor skills” is shorthand. Underneath it are five separable capacities, and each one has a visible consequence in feeding or speech.
JAWStability before precision
A jaw that cannot hold still forces the tongue and lips to compensate, so their movements get coarse. NHS paediatric guidance states the principle directly: jaw stability is essential for the acquisition of lip control. In speech this shows up as syllables that run together or a jaw that opens and closes in blocks rather than grading.
TONGUEIndependent movement
Tongue-tip elevation carries /t/, /d/, /n/ and /l/; tongue-back retraction carries /k/ and /g/; tongue height shapes vowels. If the tongue can only move together with the jaw, articulation is limited to what the jaw can do. Lateralisation — moving food sideways — is the practice that separates the two.
SENSEOral proprioception
How much pressure is on the gums, where food sits, whether the lips are sealed — these signals decide whether a movement gets corrected. A Cambridge review of drooling in developmentally normal children names poor oral-motor control and impaired oral sensation as the two main contributing factors, ahead of saliva volume. Sensation is trainable through varied textures and resistance.
LIPSClosure and the earliest consonants
/p/, /b/ and /m/ need the lips to close fully, hold pressure, then release. Full lip closure typically settles around seven to eight months, which overlaps the period when ASHA lists long strings of babble such as “mamama” and “babababa” — seven to nine months.
SALIVASwallowing as motor learning
Unconscious saliva swallowing is one of the most intricate motor tasks a child performs; the BMJ’s paediatric review notes coordination across more than 25 pairs of bulbar muscles. Salivary continence usually appears by 15–18 months, many typically developing children still dribble until about three years — especially while eating and drinking — and persistent drooling while awake after four years is treated as a reason to assess.
One-line compression. Stable jaw → independent tongue → closed lips → responsive sensation → gradeable movement → precise sound. Chewing is the part of this chain that supplies resistance, feedback and repetition.
What a teether can do — and what it cannot
This section exists because the honest answer is more useful than the flattering one.
It can
- Supply usable resistance. Too soft gives no feedback; too hard causes pain and avoidance. The right resistance makes a real bite happen and confirms “something was there”.
- Create two-sided practice. A symmetric, solid teether invites a hand change and a side change, which is how both sides of the jaw get rehearsed.
- Redirect the bite urge safely. The urge to bite is real. Without an object, it lands on fingers, cot rails or a caregiver’s shoulder — none of which have controlled resistance or hygiene.
- Make mouthing repeatable. From four months, putting things in the mouth is the main route for oral sensory learning. A teether is the most controllable version of that.
It cannot
- Treat or prevent a speech disorder. No high-quality evidence shows teethers accelerate first words or improve articulation. Language outcomes are driven by hearing, language input, interaction and cognition.
- Replace food textures. From six months, the real chewing curriculum is food: purée, then soft lumps, then meltable solids, then soft pieces, then family food.
- Replace an assessment. If chewing is weak, drooling persists, or solids are difficult, the correct next step is a speech-language pathologist or feeding clinic — not a harder teether.
- Work by being harder. Hardness has to match the age. Harder than the gums can tolerate produces avoidance, which lowers practice volume and defeats the purpose.
A workable division of labour: the teether owns quantity and frequency. Food owns textural complexity. The adults own language input. None of the three substitutes for the others.
Stage by stage: 4–6 months, 6–12 months, 12 months and up
4–6 months
TOLERANCENot chewing yet. The work here is tolerance, direction and the bite reflex — turning the mouth into a place that reports back.
- SHAPE
- Light, easy to grab, larger than the mouth can swallow, shallow surface texture with no sharp ridges. Rings and handled forms suit a whole-hand grasp.
- USE
- Several short sessions a day. Let the baby choose depth and duration; do not hold it in. Frequency beats intensity.
- AVOID
- Liquid- or gel-filled teethers, frozen solid objects, anything that sheds beads or flakes.
6–12 months
CHEWINGThe highest-value window. Munching stabilises, the tongue starts moving sideways, and rotary chewing begins.
- SHAPE
- Differentiated surfaces — branches, bumps, a variety of thicknesses — so different parts of the gums get different input.
- USE
- Watch which side is used. If one side dominates, change the hand and change the side you offer from. Encourage, do not correct.
- HAND-OFF
- From nine months the complex textures must come from the high chair: meltable solids, soft cooked pieces, lumpy mashes.
12 months +
SUPPORTRotary chewing should be consolidating. The teether moves to the back seat and becomes comfort and self-regulation.
- ROLE
- Relief during molar eruption, and a familiar object for travel or separation distress.
- EXIT
- Most children lose interest somewhere around 18–24 months as food and utensils take over. That is the normal taper, not a loss.
- CHECK
- Heavy reliance on a teether plus clear avoidance of textured food is not preference — it is a signal to assess.
Pacifiers belong in this conversation too. If a pacifier is still in heavy use past the first year, plan a gradual reduction. Prolonged, high-frequency use into the third year is associated with dental and oral-posture considerations, and it occupies mouth time that would otherwise go to babble and chewing. This is habit management, not a verdict on any product.
One-sided chewing is a detail worth watching
Two-sided chewing is a function question, not a manners question. It means the tongue can deliver food to either side, both jaws can grade their movement, and both cheeks can keep food in the chewing zone.
Fixed one-sided use can come from habit (always offering from the same hand, the same sleep side, the same carrying arm), from discomfort (one gum hurting more, an ulcer, a decayed or injured tooth), or from an asymmetry in tone or control.
Three things to do at homeLOW EFFORT
- Switch hands. Offer the teether from both sides, not always the dominant one.
- Switch approach. Now and then bring the spoon from the other side and see whether the baby turns towards it.
- Look at where food ends up. Food repeatedly pocketed in the same cheek, or chewing always on the same side, is worth writing down for a clinician.
What makes it clinicalTHRESHOLD
- Fixed, persistent, and present every meal rather than occasionally.
- Accompanied by slow meals, food refusal, or coughing.
- Accompanied by asymmetry elsewhere — one hand used far less, one side of the face moving less.
A one-sided preference is not a diagnosis. A one-sided pattern that never varies is worth a look.
When to ask for an assessment
Any single item below on its own may mean nothing. One that persists, or several together, is worth a conversation with a paediatrician, a speech-language pathologist or a feeding clinic — not another product trial.
| Area | What you might see | Why it is flagged |
|---|---|---|
| ChewingWeak chew | Still only swallowing at 12 months; pockets or spits every lump; refuses all chewy textures after 18 months. | Oral-motor or sensory support may be needed; waiting rarely fixes a texture gap. |
| DroolingPersistent | Clothing damp most of the day after two to three years; still drooling while awake after four years. | Saliva control usually establishes by 15–18 months; beyond four years is assessed. |
| SolidsDifficult | Meals routinely over 30–40 minutes; frequent gagging or choking; weight faltering; a food list that keeps shrinking. | Feeding skill or swallow safety needs review, especially with coughing or a wet voice. |
| LanguageBehind | No babble at 9 months; no wave and no “mama/dada” at 12 months; no new word attempts at 15 months; fewer than three words at 18 months; no two-word combinations at 2 years. | Hearing and language screening come first — a child can startle at loud sounds and still not hear speech clearly. |
| StructureOral | Restricted tongue tie, chronic mouth breathing, habitual open-mouth posture, obvious bite problems. | Can affect tongue placement, oral posture and how saliva is retained. |
| RegressionLost skills | Words or chewing ability that had appeared and then disappeared. | At any age this warrants prompt review rather than watching. |
Language thresholds follow the CDC milestone checklists, which mark what most children (roughly 75%) can do by that age. ASHA’s bands describe the typical range and are wider.
Choosing and using: an executable checklist
ChooseBEFORE YOU BUY
- One piece. No detachable parts, no glued seams.
- Solid. Not liquid- or gel-filled.
- Too big to swallow. Wide enough, or with a shield, that it cannot pass the back of the mouth.
- Textured, not sharp. Resistance without ridges that can abrade gums.
- Material stated. Natural rubber or medical-grade silicone, declared free of bisphenols and phthalates.
UseEVERY DAY
- Chilled, not frozen. A frozen block is too hard and teaches avoidance.
- Check before and after. Cracks, flakes, stickiness, colour change, holes — any one means replace it.
- No cords. No clips, no neck straps, nothing tied to the cot.
- Nothing sweet on it. No honey before twelve months, for botulism risk.
- Inspect at high frequency. With daily use during teething, review wear every four to six weeks — natural rubber ages with saliva, warmth and mechanical stress.
- Clean simply. Warm water with a drop of mild fragrance-free baby soap, rinse thoroughly, air-dry in shade. No boiling, steam, microwave or long direct sun.
What to remember
If you keep three sentences from this page, keep these.
4–6 months
Let him bite safely and often. The goal is oral feedback, not chewing.
6–12 months
A teether trains the bite; food trains the texture. They are not interchangeable.
12 months and up
The teether steps back to comfort. Real training happens at the table and in conversation.
If a stage looks clearly behind, the answer is not more hardness. It is an assessment — because a harder object does not create a motor pattern the child does not yet have, and it often increases avoidance instead.
Match the teether to the stage, not to the price
Entries below are grouped by age band and by the job the object is doing — practice, comfort or habit management.
SOURCES
- American Speech-Language-Hearing Association, New developmental milestones, birth to 5 (2023): long strings of babble at 7–9 months; “begins chewing food on both sides of mouth — rotary chewing” at 9–12 months. asha.org
- SOS Approach to Feeding, Developmental milestones: munching at 4–6 months, full lip closure and tongue lateralisation at 7–8 months, circular rotary movements at 8–10 months, controlled biting at 10–12 months. sosapproachtofeeding.com
- NHS Greater Glasgow and Clyde, Sialorrhoea (drooling) in children: salivary continence normally by 15–18 months, pathological after four years; jaw stability as the prerequisite for lip control. clinicalguidelines.scot.nhs.uk
- Shropshire Community Health NHS Trust, Guideline for the management of drooling in children: drooling normal in infancy, continence by 15–18 months, many typically developing children drool to about three years. shropscommunityhealth.nhs.uk
- Cambridge University Press, Drooling in developmentally normal children: a review: poor oral-motor control and impaired oral sensation as the main factors; drooling while awake beyond four years should raise concern. cambridge.org
- Centers for Disease Control and Prevention, Milestones by 15 months: tries to say one or two words besides “mama” or “dada”; points to ask for something. cdc.gov
Teething or Sick? 7 Signals That Separate the Two
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