H. Letzel

718 total citations
32 papers, 534 citations indexed

About

H. Letzel is a scholar working on Orthodontics, Oral Surgery and Public Health, Environmental and Occupational Health. According to data from OpenAlex, H. Letzel has authored 32 papers receiving a total of 534 indexed citations (citations by other indexed papers that have themselves been cited), including 17 papers in Orthodontics, 6 papers in Oral Surgery and 5 papers in Public Health, Environmental and Occupational Health. Recurrent topics in H. Letzel's work include Dental materials and restorations (17 papers), Dental Erosion and Treatment (6 papers) and Dental Implant Techniques and Outcomes (5 papers). H. Letzel is often cited by papers focused on Dental materials and restorations (17 papers), Dental Erosion and Treatment (6 papers) and Dental Implant Techniques and Outcomes (5 papers). H. Letzel collaborates with scholars based in Netherlands, Germany and United States. H. Letzel's co-authors include M.M.A. Vrijhoef, Grayson W. Marshall, S.J. Marshall, M.A. van ‘t Hof, T Philipp, P. H. Kraus, H. Przuntek, D. Welzel, S. J. Marshall and M. A. vanʼt Hof and has published in prestigious journals such as Journal of Dental Research, Dental Materials and Journal of Dentistry.

In The Last Decade

H. Letzel

32 papers receiving 501 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
H. Letzel Netherlands	14	307	147	89	71	48	32	534
Gunilla Johnson Sweden	10	435 1.4×	423 2.9×	7 0.1×	44 0.6×	3 0.1×	12	686
Susanna Marklund Sweden	11	130 0.4×	49 0.3×	118 1.3×	5 0.1×	23 0.5×	16	483
Josip Pandurić Croatia	9	170 0.6×	103 0.7×	80 0.9×	30 0.4×	2 0.0×	41	484
Lloyd L. Miller United States	10	254 0.8×	113 0.8×	3 0.0×	112 1.6×		15	428
Rebecca Wong Australia	15	320 1.0×	370 2.5×	2 0.0×	67 0.9×	26 0.5×	31	679
Ulla Kotiranta Finland	8	314 1.0×	285 1.9×	74 0.8×	91 1.3×		9	505
Thomas Forstner Austria	10	32 0.1×	115 0.8×	14 0.2×	3 0.0×	26 0.5×	23	314
Milica Jeremić-Knežević Serbia	11	26 0.1×	21 0.1×	27 0.3×	5 0.1×	3 0.1×	23	313
Jesús Álvarez‐Herms Spain	12	27 0.1×	6 0.0×	14 0.2×		29 0.6×	35	323
Jeff G. Seegmiller United States	10	11 0.0×	31 0.2×	13 0.1×	1 0.0×	2 0.0×	27	579

Countries citing papers authored by H. Letzel

Since Specialization

Citations

This map shows the geographic impact of H. Letzel'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 H. Letzel with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites H. Letzel more than expected).

Fields of papers citing papers by H. Letzel

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by H. Letzel. 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 H. Letzel. The network helps show where H. Letzel may publish in the future.

Co-authorship network of co-authors of H. Letzel

This figure shows the co-authorship network connecting the top 25 collaborators of H. Letzel. A scholar is included among the top collaborators of H. Letzel 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 H. Letzel. H. Letzel is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Letzel, H., et al.. (1997). An Estimation of the Size Distribution of Amalgam Particles in Dental Treatment Waste. Journal of Dental Research. 76(3). 780–788. 18 indexed citations

Przuntek, H., D. Welzel, M. Gerlach, et al.. (1996). Early institution of bromocriptine in Parkinson's disease inhibits the emergence of levodopa-associated motor side effects. Long-term results of the PRADO study. Journal of Neural Transmission. 103(6). 699–715. 40 indexed citations

Letzel, H. & W Schoop. (1992). [Gingko biloba extract EGb 761 and pentoxifylline in intermittent claudication. Secondary analysis of the clinical effectiveness].. PubMed. 21(4). 403–10. 9 indexed citations

Marshall, Grayson W., et al.. (1992). Microstructural Changes in Retrieved Amalgam Restorations. Digital Commons - USU (Utah State University). 2(1). 4. 4 indexed citations

Przuntek, H., et al.. (1992). Primary Combination Therapy of Early Parkinson’s Disease. European Neurology. 32(1). 36–45. 10 indexed citations

Przuntek, H., D. Welzel, W Danielczyk, et al.. (1992). Bromocriptine lessens the incidence of mortality in L-Dopa-treated parkinsonian patients: Prado-study discontinued. European Journal of Clinical Pharmacology. 43(4). 357–363. 49 indexed citations

Marshall, S.J., Grayson W. Marshall, & H. Letzel. (1992). Gamma-1 to beta-1 phase transformation in retrieved clinical amalgam restorations. Dental Materials. 8(3). 162–166. 12 indexed citations

Marshall, Grayson W., et al.. (1990). Mercury content of amalgam restorations.. PubMed. 37(6). 473–7. 3 indexed citations

Letzel, H.. (1989). Survival rates and reasons for failure of posterior composite restorations in multicentre clinical trial. Journal of Dentistry. 17. S10–S17. 82 indexed citations

10.

Letzel, H., M. A. vanʼt Hof, M.M.A. Vrijhoef, Grayson W. Marshall, & S.J. Marshall. (1989). Controlled clinical study of amalgam restorations: survival, failures, and causes of failure. Dental Materials. 5(2). 115–121. 44 indexed citations

11.

Letzel, H., et al.. (1988). Bulk fracture of amalgam restorations—a 5‐year controlled clinical trial*. Journal of Oral Rehabilitation. 15(6). 521–529. 3 indexed citations

12.

Letzel, H., Martin A. van't Hof, & M.M.A. Vrijhoef. (1987). The influence of the condensation instrument on the clinical behaviour of amalgam restorations*. Journal of Oral Rehabilitation. 14(2). 133–138. 11 indexed citations

13.

Peters, Mathilde C., et al.. (1987). Influences on the bulk fracture incidence of amalgam restorations: a 7-year controlled clinical trial. Dental Materials. 3(2). 90–93. 9 indexed citations

14.

Marshall, Grayson W., S.J. Marshall, H. Letzel, & M.M.A. Vrijhoef. (1987). Microstructures of Cu-rich amalgam restorations with moderate clinical deterioration. Dental Materials. 3(3). 135–143. 18 indexed citations

15.

Vrijhoef, M.M.A., et al.. (1986). Influence of the patient and type of articulation on the loss of substance from possterior composites: preliminary results. Journal of Dentistry. 14(6). 266–267. 1 indexed citations

16.

Letzel, H., et al.. (1986). Composite versus amalgam restorations. Journal of Oral Rehabilitation. 13(5). 401–411. 14 indexed citations

17.

Letzel, H., et al.. (1985). A rapid scanning electron microscopic replication technique for clinical studies of dental restorations. Dental Materials. 1(4). 158–163. 10 indexed citations

18.

Letzel, H., et al.. (1985). Methodological aspects in clinical evaluation of cast restorations with colour slides. Journal of Oral Rehabilitation. 12(5). 435–442. 3 indexed citations

19.

Vrijhoef, M.M.A., et al.. (1985). Loss of substance of dental composite restorations. Dental Materials. 1(3). 101–105. 17 indexed citations

20.

Letzel, H., et al.. (1978). Tarnish, corrosion, marginal fracture, and creep of amalgam restorations: a two-year clinical study.. Munich Personal RePEc Archive (Ludwig Maximilian University of Munich). 3(3). 82–92. 23 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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