Subfield · Periodontics
Top Countries in Periodontics Research
China ranks first in 2022–2025, out of 31 ranked countries.
Composite score: field-normalised excellence, output and total citations weighted 50 / 30 / 20, each as a percentile so no single heavy-tailed measure dominates. Floor: 100 fractional works in this field.
Ranked by research quality, 2022–2025
| # | Country | Score | Top-10% rate | Works | Citations | All time |
|---|---|---|---|---|---|---|
| 1 | China | 100.0 | 28.3% | 3.3k | 32k | #2 |
| 2 | United States | 79.8 | 17.7% | 2.8k | 19k | #1 |
| 3 | Italy | 68.0 | 34.5% | 592 | 7.1k | #6 |
| 4 | India | 59.6 | 6.7% | 4.6k | 12k | #4 |
| 5 | United Kingdom | 53.1 | 19.5% | 925 | 6k | #3 |
| 6 | Iran | 47.8 | 14.7% | 765 | 4.3k | #16 |
| 7 | Brazil | 43.3 | 10.1% | 1.9k | 7.5k | #5 |
| 8 | Spain | 39.4 | 24.2% | 437 | 3.7k | #12 |
| 9 | Germany | 36.0 | 22.3% | 588 | 4.7k | #7 |
| 10 | Saudi Arabia | 32.9 | 14.9% | 729 | 4.2k | #17 |
| 11 | Türkiye | 30.2 | 12.6% | 832 | 3k | #18 |
| 12 | Japan | 27.6 | 15.2% | 873 | 4.9k | #9 |
| 13 | Australia | 25.3 | 21.7% | 434 | 3.6k | #8 |
| 14 | South Korea | 23.1 | 17.2% | 549 | 3.4k | #20 |
| 15 | Poland | 21.1 | 27.9% | 272 | 2.5k | #22 |
| 16 | Egypt | 19.3 | 14.1% | 512 | 2.4k | #28 |
| 17 | ?? | 17.5 | 19.3% | 283 | 2.3k | #25 |
| 18 | Netherlands | 15.8 | 26.6% | 218 | 2.2k | #10 |
| 19 | Romania | 14.3 | 24.0% | 268 | 2k | #30 |
| 20 | Canada | 12.8 | 21.7% | 292 | 2.1k | #13 |
| 21 | Thailand | 11.3 | 18.3% | 238 | 1.5k | #29 |
| 22 | France | 10.0 | 18.2% | 267 | 1.8k | #15 |
| 23 | Taiwan | 8.7 | 21.7% | 264 | 1.9k | #27 |
| 24 | Indonesia | 7.5 | 2.5% | 1.2k | 1.4k | #33 |
| 25 | Pakistan | 6.3 | 5.7% | 489 | 1.1k | #38 |
| 26 | Malaysia | 5.1 | 11.1% | 270 | 1.2k | #36 |
| 27 | Iraq | 4.0 | 4.7% | 478 | 1.1k | #43 |
| 28 | Russia | 3.0 | 2.7% | 533 | 899 | #40 |
| 29 | Mexico | 1.9 | 9.1% | 217 | 812 | #39 |
| 30 | Ecuador | 95.5 | 3.6% | 206 | 305 | — |
| 31 | Ukraine | 0.0 | 3.4% | 234 | 332 | #46 |
countries ranked worldwide in Periodontics (31). rank on the composite score within the stated pool. The score track runs 0 to 100; the rate track carries no world mark, because the world rate differs by field.
How spread out this pool is
Every row above on one axis — one tick each, right is a higher score. A field where the top few are far clear of everyone and one that runs down evenly look identical as a table.
One bar per band of score, counting the rows on this page.
Ranked by volume, 2022–2025
- 1 India 4.6k works
- 2 China 3.3k works
- 3 United States 2.8k works
- 4 Brazil 1.9k works
- 5 Indonesia 1.2k works
- 6 United Kingdom 925 works
- 7 Japan 873 works
- 8 Türkiye 832 works
- 9 Iran 765 works
- 10 Saudi Arabia 729 works
- 11 Italy 592 works
- 12 Germany 588 works