Peter Ngan

7.1k total citations · 1 hit paper
146 papers, 5.2k citations indexed

About

Peter Ngan is a scholar working on Orthodontics, Oral Surgery and Genetics. According to data from OpenAlex, Peter Ngan has authored 146 papers receiving a total of 5.2k indexed citations (citations by other indexed papers that have themselves been cited), including 88 papers in Orthodontics, 43 papers in Oral Surgery and 41 papers in Genetics. Recurrent topics in Peter Ngan's work include Orthodontics and Dentofacial Orthopedics (83 papers), Temporomandibular Joint Disorders (39 papers) and Cleft Lip and Palate Research (28 papers). Peter Ngan is often cited by papers focused on Orthodontics and Dentofacial Orthopedics (83 papers), Temporomandibular Joint Disorders (39 papers) and Cleft Lip and Palate Research (28 papers). Peter Ngan collaborates with scholars based in United States, China and United Kingdom. Peter Ngan's co-authors include Joseph Shanfeld, Stephen Wilson, Urban Hägg, Cynthia Kar Yung Yiu, Ze’ev Davidovitch, Stephen H.Y. Wei, Henry W. Fields, Chris Martin, Daniel Merwin and Erdoǵan Günel and has published in prestigious journals such as PLoS ONE, Biochemical and Biophysical Research Communications and Journal of Bone and Mineral Research.

In The Last Decade

Peter Ngan

140 papers receiving 4.9k citations

Hit Papers

Perception of discomfort by patients undergoing orthodont... 1989 2026 2001 2013 1989 100 200 300
What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

  1. Perception of discomfort by patients undergoing orthodontic treatment
    1989 351 citations Peter Ngan et al. American Journal of Orthodontics and Dentofacial Orthopedics profile →

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
Peter Ngan United States 42 3.4k 1.8k 1.4k 1.2k 1.2k 146 5.2k
Stavros Kiliaridis Switzerland 47 3.5k 1.0× 2.3k 1.3× 2.5k 1.8× 955 0.8× 1.8k 1.5× 227 7.1k
Paola Cozza Italy 37 3.2k 0.9× 1.6k 0.9× 1.6k 1.1× 1.3k 1.1× 1.5k 1.3× 220 4.9k
Guilherme Janson Brazil 38 5.0k 1.5× 2.7k 1.5× 2.8k 1.9× 1.2k 1.0× 1.9k 1.6× 430 6.2k
Ellen A. BeGole United States 39 3.2k 0.9× 2.0k 1.1× 1.8k 1.2× 578 0.5× 1.0k 0.9× 95 4.5k
Manuel O. Lagravère Canada 34 2.7k 0.8× 2.1k 1.2× 942 0.7× 922 0.8× 630 0.5× 184 4.0k
Ravindra Nanda United States 38 3.7k 1.1× 1.7k 0.9× 1.9k 1.3× 997 0.8× 1.6k 1.4× 200 4.9k
Letizia Perillo Italy 35 1.7k 0.5× 1.2k 0.7× 803 0.6× 591 0.5× 924 0.8× 184 3.6k
W. Eugene Roberts United States 40 3.3k 1.0× 2.6k 1.4× 1.1k 0.8× 500 0.4× 1.8k 1.5× 121 5.4k
Seung‐Hak Baek South Korea 37 2.9k 0.9× 2.0k 1.1× 1.3k 0.9× 1.3k 1.1× 1.0k 0.9× 251 4.7k
Chung How Kau United States 38 2.5k 0.8× 1.7k 0.9× 767 0.5× 752 0.6× 757 0.6× 150 4.2k

Countries citing papers authored by Peter Ngan

Since Specialization
Citations

This map shows the geographic impact of Peter Ngan's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Peter Ngan with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Peter Ngan more than expected).

Fields of papers citing papers by Peter Ngan

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Peter Ngan. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Peter Ngan. The network helps show where Peter Ngan may publish in the future.

Co-authorship network of co-authors of Peter Ngan

This figure shows the co-authorship network connecting the top 25 collaborators of Peter Ngan. A scholar is included among the top collaborators of Peter Ngan based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Peter Ngan. Peter Ngan is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Zhao, Tingting, et al.. (2025). The dentofacial and upper airway morphology of adults with obstructive sleep apnea: A systematic review and meta-analysis. Sleep Medicine Reviews. 80. 102065–102065. 3 indexed citations
2.
3.
Zhao, Tingting, Zheng Yang, Peter Ngan, et al.. (2023). Association between adenotonsillar hypertrophy and dentofacial characteristics of children seeking for orthodontic treatment: A cross-sectional study. Journal of Stomatology Oral and Maxillofacial Surgery. 125(4). 101751–101751. 9 indexed citations
4.
Zhao, Tingting, et al.. (2023). Obstructive sleep apnea-related knowledge, attitude, experience, and behaviors among orthodontic professionals: a survey. Sleep And Breathing. 27(6). 2361–2369. 3 indexed citations
5.
Hosseini, Hamid Reza, et al.. (2023). A comparison of skeletal and dental changes in patients with a Class II relationship treated with clear aligner mandibular advancement and Herbst appliance followed by comprehensive orthodontic treatment. American Journal of Orthodontics and Dentofacial Orthopedics. 165(2). 205–219. 10 indexed citations
6.
7.
Xiang, Jun, et al.. (2020). Follow-up observation of patients with obstructive sleep apnea treated by maxillomandibular advancement. American Journal of Orthodontics and Dentofacial Orthopedics. 158(4). 527–534. 5 indexed citations
8.
Merdji, Ali, et al.. (2020). Stress influence on orthodontic system components under simulated treatment loadings. Computer Methods and Programs in Biomedicine. 195. 105569–105569. 23 indexed citations
9.
Zong, Chen, et al.. (2019). Skeletal and dentoalveolar changes in the transverse dimension using microimplant-assisted rapid palatal expansion (MARPE) appliances. Seminars in Orthodontics. 25(1). 46–59. 30 indexed citations
10.
Ngan, Peter, et al.. (2015). Comparison of two maxillary protraction protocols: tooth-borne versus bone-anchored protraction facemask treatment. Progress in Orthodontics. 16(1). 26–26. 72 indexed citations
11.
Ngan, Peter, et al.. (2014). Treatment and retention of relapsed anterior open-bite with low tongue posture and tongue-tie. 44(4). 203–216. 5 indexed citations
12.
Mah, James, et al.. (2014). Evaluation of masseter muscle morphology in different types of malocclusions using cone beam computed tomography. International Orthodontics. 12(1). 32–48. 25 indexed citations
13.
Hua, Fang, et al.. (2013). Prevalence of peg-shaped maxillary permanent lateral incisors: A meta-analysis. American Journal of Orthodontics and Dentofacial Orthopedics. 144(1). 97–109. 66 indexed citations
14.
Cha, Bong‐Kuen, Dong‐Soon Choi, Peter Ngan, et al.. (2010). Maxillary protraction with miniplates providing skeletal anchorage in a growing Class III patient. American Journal of Orthodontics and Dentofacial Orthopedics. 139(1). 99–112. 52 indexed citations
15.
Kao, Elizabeth, et al.. (2009). Effects of sealant and self-etching primer on enamel decalcification. Part I: An in-vitro study. American Journal of Orthodontics and Dentofacial Orthopedics. 135(2). 199–205. 38 indexed citations
16.
Ngan, Peter, et al.. (2008). Survey of treatment provided for young children by West Virginia general dentists.. PubMed. 30(4). 352–7. 6 indexed citations
17.
Martin, Chris, et al.. (2006). Treatment effects of the edgewise Herbst appliance: A cephalometric and tomographic investigation. American Journal of Orthodontics and Dentofacial Orthopedics. 130(5). 582–593. 44 indexed citations
18.
Ngan, Peter. (1998). Cephalometric and occlusal changes following maxillary expansion and protraction. European Journal of Orthodontics. 20(3). 237–254. 113 indexed citations
19.
Ngan, Peter, et al.. (1997). Longitudinal evaluation of growth changesin class II division 1 subjects. Seminars in Orthodontics. 3(4). 222–231. 89 indexed citations
20.
Burch, James G., Richard R. Lanese, & Peter Ngan. (1994). A two-month study of the effects of oral irrigation and automatic toothbrush use in an adult orthodontic population with fixed appliances. American Journal of Orthodontics and Dentofacial Orthopedics. 106(2). 121–126. 40 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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