Information Quality of Implant-Related Videos on Chinese Social Media Platforms: A Cross-Sectional Analysis of Bilibili, Douyin, and Xiaohongshu
This cross-sectional analysis of 250 dental implant videos on Chinese social media platforms reveals that while Bilibili offers the highest quality and most comprehensive educational content, overall information quality varies significantly across platforms, with clinically critical topics like treatment planning frequently overlooked and user engagement metrics proving unreliable as indicators of accuracy.
Original paper licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). This is an AI-generated explanation of the paper below. It is not written or endorsed by the authors. For technical accuracy, refer to the original paper. Read full disclaimer
Imagine the internet as a giant, bustling library where everyone is shouting about dental implants. Some people are whispering in the back, while others are screaming from the rooftops. A team of researchers from Ruijin Hospital decided to walk through the three most popular "rooms" of this library in China—Bilibili, Douyin, and Xiaohongshu—to see which ones were actually teaching the truth and which ones were just making noise.
They didn't just listen; they brought a very specific checklist called the Implant Content Score (ICS). Think of this checklist like a 10-point treasure map. To get a high score, a video had to cover ten specific "treasures": things like why you need an implant, the risks, how to diagnose the problem, the actual surgery steps, what could go wrong (complications), how to keep it clean later, what the long-term outlook is, and the big picture of the whole treatment plan. They also used a "Global Quality Scale" (GQS) to judge how good the video felt as a whole lesson.
The Great Video Hunt
On June 10, 2026, the researchers typed the Chinese word for "dental implant" into each app. They grabbed the first 100 videos from each platform. After weeding out the duplicates, the ads, and the videos that had nothing to do with teeth, they were left with 250 videos to study: 83 from Bilibili, 79 from Douyin, and 88 from Xiaohongshu.
The Length Matters (A Lot)
Here's the first big surprise: Time is the secret ingredient.
The videos on Bilibili were the marathon runners of the group. They lasted a median of 217 seconds (that's almost 4 minutes!).
Xiaohongshu videos were the sprinters, clocking in at 74 seconds.
Douyin videos were the shortest, averaging just 59 seconds.
The researchers found a clear link: the longer the video, the more "treasures" it had on its checklist. If a video was short and punchy, it usually missed the deep stuff. If it was long, it tended to cover more ground.
The Scoreboard
When the researchers graded the videos, Bilibili took the gold medal.
- Bilibili had the highest average score on the checklist (4.0 out of 10) and the best overall teaching quality.
- Xiaohongshu came in second with a score of 3.0.
- Douyin landed in third with a score of 2.0.
The difference wasn't just a tiny gap; the math showed it was a huge, real difference.
What Was Missing?
Even the "best" videos were missing some crucial pieces of the puzzle.
- The Good News: Almost every single video (97.2%) got the basics right about scientific accuracy. They knew what an implant was.
- The Bad News: The videos were terrible at explaining the whole picture.
- Only 8.8% of all videos talked about comprehensive treatment planning. This is the big picture: how the implant fits with your other teeth, your bite, and your overall health. It was the most ignored topic.
- Only 31.6% talked about when you should get an implant.
- Only 23.6% talked about the risks or things that might stop you from getting one.
- Only 18.8% discussed the long-term prognosis (what happens years from now).
It's like a chef showing you how to flip a burger patty but never telling you about the bun, the cheese, or the fact that you might burn your tongue.
The "Likes" Lie
Here is the most important lesson for anyone scrolling through their phone: Popularity does not equal quality.
The researchers checked the "likes," "comments," and "favorites" for every video. They found zero connection between how many people liked a video and how good the information was.
- A video could have thousands of likes and be missing half the checklist.
- A video could have very few likes and be packed with accurate, complete info.
- The number of likes was just a "popularity contest," not a "truth contest."
The Verdict
The study suggests that if you want to learn about dental implants on Chinese social media, Bilibili is your best bet because the videos are longer and cover more ground. However, even the best videos often skip the most important part: the big-picture treatment plan.
The researchers didn't find a "perfect" video. They found that the internet is full of short, catchy clips that might look great but leave out the boring (but vital) details about risks, long-term care, and the full treatment strategy. So, while social media is a great place to start, you can't just trust the video with the most likes; you have to look for the one that actually takes the time to tell the whole story.
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