Silicone vs. Wooden Teethers: Which Is Actually Safer for Your Baby's Gums?

The debate happens in every modern Indian parent group at some point. Someone posts a photo of a beautifully finished beechwood teether and someone else posts a pastel silicone one, and within minutes there are two camps: the natural-is-better camp and the certified-is-better camp. Both arguments sound reasonable. Both are incomplete. This post gives you the information both sides leave out — specifically, what "natural" means when a 5-month-old chews on something for six hours a day, and what independent certification actually verifies.

The answer is not what most eco-parenting blogs tell you — and it is not what most silicone brands tell you either.

The Case for Wooden Teethers: What the Eco-Parenting Argument Gets Right

The appeal of wooden teethers is genuine and not irrational. A properly finished beechwood or maple teether is firm enough to provide real gum counter-pressure — the sensation that actually soothes teething discomfort. It is a sustainable material with a lower environmental footprint than silicone, which is derived from silica but involves industrial processing. For parents who prioritise minimal processing and organic aesthetics, wood is a coherent choice in theory.

The firmness of wood also offers a different chewing experience than silicone. Some babies prefer the harder resistance of wood for gum pressure, particularly when molars begin erupting after the first year. These are real advantages that belong in the comparison honestly.

The Case Against Wooden Teethers: What the Same Argument Leaves Out

The problems with wooden teethers are not hypothetical — they are material science. Wood is a porous, organic material. When a baby chews on it for hours every day, the surface eventually degrades. That degradation takes several forms, each with a specific safety concern.

The Splintering Risk

Wood that has not been finished with a thick, baby-safe sealant will develop micro-cracks and eventually splinter under repeated wet pressure — exactly what teething produces. Even a small splinter entering a baby's mouth can lacerate soft gum tissue or, in a worst case, be swallowed. A silicone teether cannot splinter. It is a cross-linked polymer that tears rather than fractures — and a well-made 100% food-grade silicone teether will show visible tearing before a piece detaches, giving you a clear signal to discard it.

The Sterilisation Problem

Boiling — India's most practical teether sterilisation method — causes irreversible damage to wood. Hot water causes wood fibres to swell, crack, and separate from the finish. This means a boiled wooden teether has potentially compromised structural integrity every time it is sterilised. A 100% food-grade silicone teether can be boiled repeatedly, steam sterilised, or run on the top rack of a dishwasher without any degradation in material or safety properties. Heat stability to 200°C is a material property of silicone — not a brand claim.

The Finish and Dye Problem

Most wooden teethers are finished with beeswax, linseed oil, or food-safe paint to protect the wood and make it visually appealing. The relevant question is: finished with what, tested to what standard, and by whom? In India, a wooden teether with a "non-toxic" claim on its packaging has often only been self-certified by the manufacturer. A teether with a verified BIS Certified (IS 9873) mark has been tested by a BIS-recognised laboratory against specific migration limits for 8 toxic heavy metals — including lead and cadmium, which are commonly found in coloured dyes and wood stains. The word "natural" does not appear anywhere in IS 9873. Independent testing does.

The Bacteria Problem

Wood grain is porous. Saliva, milk residue, and food particles that enter the grain between chewing sessions create a breeding environment for bacteria that cannot be fully addressed by surface wiping. Silicone is non-porous — there is no grain, no surface texture that harbours bacteria, and no residue that cannot be reached by a brief rinse or boil. In India's humid summer conditions, where bacterial growth rates are significantly elevated, this is a meaningful hygiene advantage.

The Full Side-by-Side Comparison

What IS 9873 Actually Certifies — and Why It Changes the Comparison

BIS IS 9873 is India's mandatory safety standard for toys and baby products, administered by the Bureau of Indian Standards. It is not a brand certification — it is a government-backed independent testing requirement. For a teether to carry a verified BIS mark, the product must pass tests at a BIS-recognised laboratory, not just pass internal quality checks.

IS 9873 Part 3 specifically tests for migration of 8 toxic elements: antimony, arsenic, barium, cadmium, chromium, lead, mercury, and selenium. These are the precise contaminants most likely to be present in coloured finishes, dyes, and surface treatments — which is exactly where the risk lies in decorated wooden teethers. Part 1 tests mechanical safety: drop impact, sharp-edge formation, small-parts dimensions relative to the choking-hazard cylinder. Part 2 tests flammability. Together, these three parts address every meaningful safety dimension of an object that goes into a baby's mouth for hours at a time.

According to the Indian Academy of Pediatrics' Guidelines for Parents, any object regularly placed in a young baby's mouth should meet a verifiable safety standard — not a self-declared one. BIS IS 9873 is that standard in India.

What the Pinch Test Tells You About Any Silicone Teether

Not all products labelled "food-grade silicone" are genuinely pure. Many manufacturers blend silicone with cheap plastic fillers to reduce production costs. These fillers degrade under heat and can release chemicals when a teether is sterilised or chilled.

The test is simple: pinch the teether hard and twist it. If you see white streaks appear at the fold, there are plastic fillers in the silicone — the white colour is the filler being stressed. If there are no white streaks and the colour stays solid throughout the fold, the silicone is pure. The Cubkins 100% Silicone Baby Fruit Feeder & Teether (BIS Certified IS 9873) passes the pinch test every time — solid, vibrant colour with no white streaks, regardless of how hard you twist or fold it.

As a 3-in-1 product, the Cubkins feeder also functions as a safe fruit feeder from 6 months and a frozen breastmilk soother — so it covers the same use case as a wooden teether plus two additional functions, from a single BIS-certified 100% food-grade silicone unit with zero plastic contact across every component.

The Cubkins Silicone Ring Teether is another BIS certified option which for self-teething providing 5 different textures for babies to chew on.

The Verdict: Which Should You Choose?

If the wooden teether you are considering has a verified BIS IS 9873 CM/L licence number, has been independently tested for heavy-metal migration, and comes with clear sterilisation guidance that does not involve heat — it is a reasonable choice for a parent who values natural materials, used under supervision on a baby over 9 months with no teeth sharp enough to splinter the surface.

If the wooden teether has a self-declared "non-toxic" claim with no independent certification number — and most sold in India do not — the comparison has already been resolved by the absence of evidence, not by the presence of it.

For a 4–12 month baby who will chew on the teether for hours every day, be sterilised daily in an Indian kitchen, and potentially be chilled and handed to a baby in summer heat, a 100% food-grade silicone, BIS Certified (IS 9873) teether is the verifiably safer choice. Not because nature is dangerous — but because verification is what safety actually means.

Frequently Asked Questions

Are wooden teethers safe for babies in India?

Wooden teethers can be safe under specific conditions: the wood is untreated or finished with a certified food-safe sealant, the product carries a verified BIS IS 9873 certification number (not a self-declared "non-toxic" label), the baby is supervised during use, and the teether is inspected before every session for surface cracking or splintering. In practice, most wooden teethers sold on Indian e-commerce platforms do not display a verifiable BIS CM/L licence number and have not been independently tested for heavy-metal migration. The absence of certification is not proof of safety — it is the absence of evidence of safety.

Can you boil a wooden teether to sterilise it?

No. Boiling causes irreversible damage to wood — hot water forces moisture into the wood fibres, causing swelling, cracking, and finish separation. A boiled wooden teether has structurally degraded material and a compromised surface finish. The standard alternative for wood is surface wiping with a damp cloth — which does not sterilise, it only removes surface contamination. For parents who boil feeding equipment as the standard sterilisation method in Indian kitchens, a 100% food-grade silicone teether is the only material that handles repeated boiling without any loss of structural integrity or safety properties.

What is BIS IS 9873 and why does it matter for teethers?

BIS IS 9873 is India's mandatory safety standard for toys and baby products, issued by the Bureau of Indian Standards. For teethers, the relevant parts are Part 1 (mechanical and physical safety — choking hazard dimensions, drop impact, sharp edges), Part 2 (flammability), and Part 3 (migration of toxic elements — tests for 8 heavy metals including lead, arsenic, and cadmium). A BIS Certified (IS 9873) teether has passed all three tests at a BIS-recognised laboratory independently — not through a manufacturer's own quality check. You can verify any BIS licence on the BIS Care app using the CM/L number displayed on the product.

Is silicone actually natural? Is it better than natural wood?

Silicone is a synthetic polymer derived from silica — silicon dioxide, one of the most abundant natural compounds on earth. It is not organic in the botanical sense, but it is derived from a natural source and is chemically inert in contact with food and saliva at all relevant temperatures. The "natural vs synthetic" framing is less useful than the "tested vs untested" framing for a teether. A certified 100% food-grade silicone teether has documented, independent evidence of heavy-metal safety; most wooden teethers in India do not. That is the comparison that matters for an infant who chews on it for six hours a day.

How do I check if a silicone teether is genuinely pure and not mixed with plastic fillers?

The pinch test: hold the teether firmly and twist or fold it tightly. If white streaks appear at the fold, the silicone contains plastic fillers — the white colour is the filler under stress. Pure 100% food-grade silicone shows no white streaking regardless of how hard it is twisted — the colour remains solid and consistent throughout. You can apply this test to any silicone baby product before purchasing or after receiving it. Always inspect teethers before each use session and discard any product showing visible tearing, discolouration, or surface damage.

Can I refrigerate a silicone teether in summer for gum relief?

Yes — refrigerator chilling (not freezing) is one of the most effective and safest methods for relieving teething discomfort, and it is specifically recommended by the American Academy of Pediatrics. Place the teether in the refrigerator (not the freezer) for 20–30 minutes before offering it. The mild cold naturally numbs inflamed gum tissue without any risk of frostbite — which freezing can cause. Wooden teethers should not be refrigerator-chilled because moisture exposure accelerates grain degradation and surface finish separation. Silicone is unaffected by refrigeration in any direction.