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International Journal of Bioprinting 3D printing in bone regeneration and bone repair

Table 6. Top 10 authors with the most publications and citations on three-dimensional printing in bone regeneration and bone
repair
Rank Authors Country Article count Percentage (%, N/2,025) Total citations H-index
1 Chen Y China 39 1.926 1,138 16
2 Wu CT China 39 1.926 2,017 22
3 Zhu YF China 30 1.481 1,613 19
4 Chang J China 27 1.333 1,895 21
5 Lee SJ USA 26 1.284 815 14
6 Wang H China 26 1.284 626 14
7 Wang Y China 26 1.284 347 8
8 Lee J South Korea 24 1.185 390 11
9 Park SA South Korea 24 1.185 702 14
10 Li L China 23 1.136 686 14
Rank Authors Country Article count Percentage (%, N/2,025) Total citations H-index
1 Chen Y China 39 1.926 1,138 16
2 Wu CT China 39 1.926 2,017 22
3 Zhu YF China 30 1.481 1,613 19
4 Chang J China 27 1.333 1,895 21
5 Lee SJ USA 26 1.284 815 14
6 Wang H China 26 1.284 626 14
7 Wang Y China 26 1.284 347 8
8 Lee J South Korea 24 1.185 390 11
9 Park SA South Korea 24 1.185 702 14
10 Li L China 23 1.136 686 14

References with citation bursts are considered a valuable element analysis” (cluster 10) (Figure 8A). A network
indicator of literature that authors have frequently cited in map by VOSviewer was used to analyze the distribution
a particular domain over a certain period . The top 25 of keywords according to the average publication year
[29]
references with the strongest citation bursts are shown (dark blue: earlier; yellow: later) (Figure 8B). A total of
together with their reference duration (Figure 7). The 138 keywords were obtained with a minimum number
article titled “Rapid casting of patterned vascular networks of occurrences of a keyword set to 25. The 5 keywords
for perfusable engineered three-dimensional tissues” with the highest occurrences were “in vitro” (total link
that was published in 2012 ranked first (strength = 4.73). strength: 2,557), “scaffolds” (total link strength: 2,390),
Meanwhile, the citation bursts of an article published by “regeneration” (total link strength: 2,322), “tissue
Fielding G (“Multisociety consensus quality improvement engineering” (total link strength: 2,168), and “bone” (total
revised consensus statement for endovascular therapy of link strength: 2,167). The majority of the keywords were
acute ischemic stroke”) had the longest duration from 2012 published before 2019, while relatively new keywords that
to 2017. emerged after 2020 included “bioink,” “cartilage tissue,”
and “nanofibers.”
3.6. Co-occurrence analysis of keywords
CiteSpace and VOSviewer were used to conduct a co- The time dynamic evolution of keyword clusters was
occurrence cluster analysis of keywords to capture visualized using CiteSpace (Figure 8C). Seven main clusters
research frontiers in the field. They were classified into 11 were identified: “bone tissue engineering” (cluster 0), “3D
clusters: “extracellular matrix” (cluster 0), “reconstruction” bioprinting” (cluster 1), “photothermal therapy” (cluster 2),
(cluster 1), “photothermal therapy” (cluster 2), “digital “phosphate” (cluster 3), “osteoinduction” (cluster 4),
light processing” (cluster 3), “titanium” (cluster 4), “3D “reconstruction” (cluster 5), “tissue engineering” (cluster
printing” (cluster 5), “calcium phosphate” (cluster 6), 6), and “three-dimensional printing” (cluster 7), among
“additive manufacturing” (cluster 7), “bone ingrowth” which cluster 0 and cluster 6 were hotspots from former
(cluster 8), “mechanobiology” (cluster 9), and “finite studies, cluster 2 was a mid-period research hotspot, and

Volume 9 Issue 4 (2023) 322 https://doi.org/10.18063/ijb.737