---
title: "Tmj Splint — $118K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/health-household/tmj-splint"
last_updated: "2026-08-10T19:59:25.162Z"
locale: en
meta:
description: "Niche score 45/100 · $118K/yr market · 52K searches/yr · $27.10 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 45/100 · $118K/yr market · 52K searches/yr · $27.10 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Tmj Splint — $118K/yr Amazon US Niche (2026) - Flapen"
---
# **tmj splint**
**Skip it**
Brand-locked demand (top 5 brands take 100% of clicks) — this niche doesn't clear our bar today.
Market size 28Growth 18Conversion 81Competition 10Returns 78Price range 95Avg price 95Brand share 0Review moat 22Quality gap 97
**Quality gap**
**Incredible****3.8★**
avg incumbent rating — lower means beatable quality
**Avg price**
**Incredible****$27.10**
avg listing price — sweet spot $15–$100
**Price range**
**Incredible****$15.48–$57.13**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Conversion**
**Great****8.4%**
search→purchase rate — share of searches ending in a sale
**Returns**
**Great****1.8%**
return rate — above 5% kills the launch gate
**Market size**
**Okay****$118K**
$118K/yr · 52K searches
**Review moat**
**Bad****9,384.75**
avg incumbent reviews — the moat a new listing must climb
**Growth**
**Bad****-13.1%**
90-day search growth — must beat 0% to launch
**Competition**
**Bad****88%**
top-5 click share — a locked-up shelf
**Brand share**
**Bad****100%**
top-5 brand share — brand-locked demand
**Signals**[** Quality Gap**](https://flapen.com/research/niches?market=us&signal=quality_gap "Avg rating < 4.0")
According to Flapen's Amazon United States niche tracking, tmj splint is a $118K/yr Amazon United States market (52K searches/yr). The top 5 brands hold 100% of demand. Demand peaks in Mar–Sep. Verdict: Skip it — 45/100.
Data updated Jul 14, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **tmj splint market data**
- **Units sold / yr**
- **3K–4K**
- avg 250–500/product
- **Revenue / yr**
- **$81K–$108K**
- units × avg price
- **Conversion rate**
- **8.4%**
- **Avg BSR**
- **#29**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **75%**
- **Out of stock**
- **3.9%**
- **Avg brand age**
- **49 months**
- **Avg seller age**
- **161 days**
## **Competition & brand share**
The top 5 products capture 88% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**5 **—flat
**Sellers**
**43**
**Top-5 brand share**
**100%**
Top 20: 100%
**Top-5 click share**
**88%**
Top 20: 100%
**Open market**
**0%**
- SmartGuard74% - DenTek9% - Lisa's TMJ Mouth Pillow8% - Generic5% - Plackers4%
## **Demand & seasonality**
Weekly Amazon search volume, last 57 weeks — -13.1% search growth over the last 90 days.
15K10KPrime Day '25Spike '25Holiday '25Spike '26 seasonJunJulAugSepOctNovDecJanFebMarAprMayJun
Peak months: Mar, Sep · busiest ÷ quietest = 5.1×
[**Open Trend **](https://flapen.com/research/us/health-household/tmj-splint/trend)
## **Top tmj splint search terms**
- **tmj splint**15K/yr-17.8%0.8% conv. - **daytime jaw clenching relief**12K/yr-2.1%0.5% conv. - **smart guard elite dental guard**8K/yr-13.9%17.5% conv. - **front teeth night guard**8K/yr-11.2%6.8% conv. - **smartguard elite dental guard**5K/yr-19.7%19.8% conv. - **smart guard**3K/yr-10.8%7.2% conv. - **smartguard**2K/yr-17.0%8.6% conv. [**All search terms **](https://flapen.com/research/us/health-household/tmj-splint/search-terms)
## **Top tmj splint products on Amazon**
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
0%20%$24K40%$47K60%$71K80%$94K101001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 8 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Dental Guard SMARTGUARD Elite (2 Guards 1 Travel case) Front Tooth Custom Anti Teeth Grinding Night Guard for Clenching - Dentist Designed - Bruxing Splint Mouth Protector for Relief of Symptoms**SmartGuard**$23.20**3.8★3,149 rev](https://www.amazon.com/dp/B06XXRSFKC) [2**Lisas TMJ Mouth Pillow Relaxes Your jaw Muscles and eases Your jaw Pain by Providing a Place to Rest Your jaw in the Optimal Neutral Position Settling Down Overworked jaw Muscles to Ease jaw Pain**Lisa's TMJ Mouth Pillow**$19.74**3.5★50 rev](https://www.amazon.com/dp/B0FM8VC7Z4) [3**DenTek Professional-Fit Dental Guard Mouth Guard for Grinding Teeth at Night 1 Count**DenTek**$15.48**3.9★23,418 rev](https://www.amazon.com/dp/B008YEMVSI) [4**SmartGuard Dental Guard Night Guard for Clenching Bruxism and Grinding Dentist Designed Includes 2 Guards 1 Travel Case and a 60-Day Supply of Premium Cleaning Crystals**SmartGuard**$35.88**3.8★3,149 rev](https://www.amazon.com/dp/B077C9LG53) [5**SmartGuard Anti Snore Device. New Customizable Snore Reducing Mouthpiece Reduce Snoring Aid for Men and Women Most Comfortable and Adjustable Oral Appliance - Holds Jaw Forward to Open Airway**SmartGuard**$57.13**3.3★1,452 rev](https://www.amazon.com/dp/B0BDGG5X9C)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Lisas TMJ Mouth Pillow Relaxes Your jaw Muscles and eases Your jaw Pain by Providing a Place to Rest Your jaw in the Optimal Neutral Position Settling Down Overworked jaw Muscles to Ease jaw Pain**Lisa's TMJ Mouth Pillow**$19.74**50 rev11mo ago](https://www.amazon.com/dp/B0FM8VC7Z4) [**SmartGuard Anti Snore Device. New Customizable Snore Reducing Mouthpiece Reduce Snoring Aid for Men and Women Most Comfortable and Adjustable Oral Appliance - Holds Jaw Forward to Open Airway**SmartGuard**$57.13**1,452 rev3y ago](https://www.amazon.com/dp/B0BDGG5X9C) [**Dentists Choice Dental Guard - Best Oral Appliance for Bruxism Clenching - Nighttime Moldable Front Tooth Custom Anti Teeth Grinding Night Protector - Professional Slim-fit Bruxing Mouth Bite Splint**Generic**$20.03**395 rev4y ago](https://www.amazon.com/dp/B09RTRGL9F) [**Plackers Grind No More Night Guard Nighttime Protection for Teeth BPA Free Sleep Well Ready to Wear Disposable One Size Fits All 16 Count**Plackers**$19.65**34,109 rev7y ago](https://www.amazon.com/dp/B07PM8FXMX) [**SmartGuard Dental Guard Night Guard for Clenching Bruxism and Grinding Dentist Designed Includes 2 Guards 1 Travel Case and a 60-Day Supply of Premium Cleaning Crystals**SmartGuard**$35.88**3,149 rev8y ago](https://www.amazon.com/dp/B077C9LG53)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Lisas TMJ Mouth Pillow Relaxes Your jaw Muscles and eases Your jaw Pain by Providing a Place to Rest Your jaw in the Optimal Neutral Position Settling Down Overworked jaw Muscles to Ease jaw Pain**Lisa's TMJ Mouth Pillow**$19.74**3.5★**▲ 35%**](https://www.amazon.com/dp/B0FM8VC7Z4) [**SmartGuard Dental Guard Night Guard for Clenching Bruxism and Grinding Dentist Designed Includes 2 Guards 1 Travel Case and a 60-Day Supply of Premium Cleaning Crystals**SmartGuard**$35.88**3.8★**▲ 22%**](https://www.amazon.com/dp/B077C9LG53) [**DenTek Professional-Fit Dental Guard Mouth Guard for Grinding Teeth at Night 1 Count**DenTek**$15.48**3.9★**▲ 11%**](https://www.amazon.com/dp/B008YEMVSI) [**Dental Guard SMARTGUARD Elite (2 Guards 1 Travel case) Front Tooth Custom Anti Teeth Grinding Night Guard for Clenching - Dentist Designed - Bruxing Splint Mouth Protector for Relief of Symptoms**SmartGuard**$23.20**3.8★**— 1%**](https://www.amazon.com/dp/B06XXRSFKC) [**Dentists Choice Dental Guard - Best Oral Appliance for Bruxism Clenching - Nighttime Moldable Front Tooth Custom Anti Teeth Grinding Night Protector - Professional Slim-fit Bruxing Mouth Bite Splint**Generic**$20.03**3.8★**▼ 10%**](https://www.amazon.com/dp/B09RTRGL9F)
**~~View all trending →~~**
## **What buyers say about tmj splint**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Comfort-Overall**13%
*“They are extremely comfortable”*
**Quality-Overall**10%
*“Excellent Product”*
**Size-Overall**10%
*“Easy to fit”*
**Ease Of Use**9%
*“The process is easy”*
**Value For Money**8%
*“Worth it”*
**Instructions/User Manual/Troubleshooting**5%
*“Excellent instructions”*
**Tooth Sensitivity**5%
*“Good for teeth”*
**Efficiency**4%
*“this one is simple and effective”*
**Advertised Vs Actual Product**3%
*“As advertised”*
**Durability**3%
*“Durable”*
### **What buyers complain about **
**Size-Overall**21%
*“Awkward fit”*
**Comfort-Overall**9%
*“Bulky and uncomfortable”*
**Value For Money**8%
*“definitely not worth the price”*
**Functionality-Overall**8%
*“Never worked”*
**Durability**8%
*“Bad durability”*
**Quality-Overall**6%
*“the build quality is very poor”*
**Thickness**4%
*“Very thick and bulky”*
**Ease Of Use**3%
*“Not easy”*
**Instructions/User Manual/Troubleshooting**2%
*“The instructions are unclear”*
**Hard Feel**2%
*“also biting hard”*
### **Top return reasons **
**Size-Overall**39%
**Functionality-Overall**14%
**Comfort-Overall**10%
**Advertised Vs Actual Product**10%
**Product Condition**4%
**Material Quality**4%
**Defective Material/Parts**4%
**Shape/Style**2%
**Instructions/User Manual/Troubleshooting**2%
**Quality-Overall**1%
## **Common questions**
- **Is tmj splint profitable to sell on Amazon United States?**
- The niche generates $118K/yr across 8 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is -13.1%. Flapen's verdict: Skip it (45/100).
- **How competitive is the tmj splint niche?**
- 5 brands and 43 sellers compete. The top 5 products take 88% of clicks and top 5 brands hold 100% of demand.
- **What do buyers complain about in tmj splint?**
- Top complaints mined from reviews: Size-Overall, Comfort-Overall, Value For Money. The return rate is 1.8%.
- **When does demand for tmj splint peak?**
- Demand peaks in Mar–Sep; the busiest month runs 5.1× the quietest.
- **What does it cost to enter the tmj splint niche?**
- Listings span $15.48–$57.13; the average listing price is $27.10 (sweet spot $15–$100). The average incumbent carries 9,385 reviews — the moat a new listing must climb.
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