Dental Hygiene Research Guide

These tools will help you to either locate items in our collection (DOI Search, Journal Finder, LibKey Nomad) or to request a copy of an item we don't currently have access to (Interlibrary Loan).

Building a Better Search

To get the most out of your searches in library and public databases (or even Google!), it helps to know how to search using keywords and operators. Instead of trying to use full sentences, select the most important terms in your query (usually nouns or noun phrases) and join them to other terms in order to control the results you get. For example: if you're trying to learn about craniofacial surgery, you'll get the same or better results in PubMed using the phrase "craniofacial surgery" rather than "what is craniofacial surgery." Here are some ways to use and combine terms to get better results (links go to illustrative search results in PubMed):

Use quotation marks or brackets to search for exact phrases

Example: Use "craniofacial surgery" instead of craniofacial surgery. Notice that using quotation marks generates a much smaller and more focused set of results.
 

Use AND to narrow your search or combine searches

Example: Instead of doing two separate searches for "green tea" and "black tea", combine them: "green tea" AND "black tea" [Note: PubMed and some other databases assume that any terms you enter in the search box are joined by an AND unless you ask them to do otherwise]
 

Use OR to widen your search by exploring alternative terms

Example: Heart attacks can be described in different language depending on context and usage. You'll get different results searching for "heart attack" than you would searching for "myocardial infarction". Using OR, you can combine them to cover both options, like so: "heart attack" OR "myocardial infarction". This is also a good trick to use to cover variant spellings (UK vs US English), plurals, and other forms of words.
 

Use NOT to eliminate unwanted results

Example: Sometimes, your search will include results that aren't quite what you need. You can use NOT to get rid of them. To test this, first look at this search for "oral health", then compare it to the number of results and visible options in this search for "oral health" NOT pregnancy

The Threadbox below contains three basic instructional VoiceThreads for using PubMed. If your view in the box is too small, here are some individual links so you can open each one in a new window:

Module 1 (Introduction to PubMed)

Module 2 (Searching in PubMed with PICO Questions)

Module 3 (The MeSH and Journals Databases)

As a general rule, evidence is stronger if it is more generalizable and less vulnerable to bias. Generalizability is easier to get from the combined analysis of several studies than it is from any single study. Rigorously designed and controlled experimental studies are typically less vulnerable to bias than purely observational studies, which are in turn less vulnerable to bias than descriptive or qualitative studies. Expert opinion or analysis pieces, no matter how well-sourced and well-informed, are the weakest form of relevant evidence, as they do not lend themselves to generalization well and often reflect the biases, agendas, or prior assumptions of their authors.

Note that for the purpose of your work in Dental Hygiene at USI, animal and laboratory studies typically don't constitute usable evidence.

Source Types: Examples

The examples provided below all link out to freely available full-text articles. Look carefully at labels, tags, headers, at how articles are organized, and at the contents of methods sections (where available). Click the asterisks next to key terms to go to helpful definitions/explanations of the named source types.
 

1. Systematic Reviews and Meta-analyses*

Meta-analysis

Systematic Review of RCTs

Systematic Review of Descriptive Studies
 

2. Evidence-Based Clinical Practice Guidelines and Experimental/Quasi-Experimental Studies*

Evidence-based Clinical Practice Guideline

Randomized Controlled Trial

Crossover Study
 

3. Analytical Observational Studies*

Cohort Study

Case-Control Study
 

4. Descriptive* and Qualitative* Studies 

Case Report

Case Series

Cross-sectional Study

Qualitative Study
 

4. Other Types of Publication

Narrative Review

Editorial

Letter

Lab Studies

In Vitro Study

Basic Info

Author(s). Title of Dissertation. Type of document. University Name; Year. Access date [if accessed online]. URL [if accessed online]

*There are, as a rule, only two document types to choose from for this kind of material: Dissertation or Master's Thesis.

Examples

1. Austin LD. Oral Status of Residents of Long-term Care Facilities in Kentucky. Dissertation. University of Louisville; 2009.

2. McCurry CL. A Story-Centered Approach to AP English Literature, Curriculum, and Assessment. Master's thesis. University of New Orleans; 2020. Accessed May 27, 2022. https://scholarworks.uno.edu/td/2761/

UptoDate topic pages should be cited like chapters in a book titled UpToDate, edited by Ted W. Post, published by UpToDate, with no page numbers. 

Basic Info

Topic page author(s). Topic page title. In: Post TW, ed. UpToDate. UpToDate; year. Accessed [date]. URL

Example

1. Chow AW. Epidemiology, pathogenesis, and clinical manifestations of odontogenic infections. In: Post TW, ed. UpToDate. UpToDate; 2022. Accessed May 27, 2022. https://www.uptodate.com/contents/epidemiology-pathogenesis-and-clinical-manifestations-of-odontogenic-infections

Discussion

1. There are two different possible approaches to finding the correct URL; your editor or instructor may prefer one or the other, so be sure to check:
   a. https://www.uptodate.com [this is the safest and simplest URL to use, essentially referring to the "book" as a whole]
   b. The publicly available topic URL, which you'll need to reconstruct from the proxied link you may see when you access the article through the library's databases. Its form is like this: https://www.uptodate.com/contents/title-of-topic-separated-by-hyphens  [this is basically the "chapter" URL, and it should get users not otherwise signed in to UpToDate into the table of contents for the topic.]
2. For the publication year, use the "last updated" year provided toward the top of the article page, as depicted in the image below.

Basic Info

Author(s). Title. Name of dept/bureau/etc.; Publication date/year. Additional publication numbering or series info. Accessed [date]. URL

Example

Henry M, Mahathey A, Morrill T, Robinson A, Shivji A, Watt R; and Abt Associates. The 2018 Annual Homeless Assessment Report (AHAR) to Congress. Part 1: Point-in-Time Estimates of Homelessness. Office of Community Planning and Development, US Dept of Housing and Urban Development; 2018. Accessed January 11, 2019. https://www.hudexchange.info/resources/documents/2018-AHAR-Part-1

Discussion

Format for organizational and government reports varies widely – especially if you wander into the world of numbered codes and resolutions. In these cases, use your best judgment, consult the AMA manual online (see Chapter 3, sections 3.13.2 and 3.15.5), or (if needed) reach out to a librarian for assistance.

Basic Info

Author(s). Title of page or document cited. Name of Website. Date of publication, if available. Updated date, if available. Accessed date. URL

Example

1. National Institute on Drug Abuse. Understanding drug use and addiction. National Institute on Drug Abuse website. Updated June 6, 2018. Accessed September 4, 2018. https://www.drugabuse.gov/publications/drugfacts/understanding-drug-use-addiction

Discussion

Websites are tricky fun.

• Author: Sometimes the author of a particular page or section of a site is an individual, other times it’s an organization. If you see individual names as authors somewhere on the page, list them. If not, default to the organization as author.
• Title: You might notice that in this example the site’s author (the organization) is also the name of the website. When this happens, be sure to add the words “Website” to the website name. This way can avoid a citation that simply reads: “National Institute on Drug Abuse. National Institution on Drug Abuse. http://...”
• Dates: Not all sites provide updated and published dates. If they are available, provide them. Always provide the date you accessed the site.

Think of these as a mashup of a journal and website citation.

Basic Info

Author. Title of article. Name of Newspaper. Date published. Section [if present]. Page numbers [if present]. Accesed date. URL

Example

1. Wootson CR Jr. Dentists keep dying of this lung disease. The CDC can’t figure out why. The Washington Post. March 10, 2018. Accessed September 4, 2018. https://www.washingtonpost.com/news/to-your-health/wp/2018/03/10/dentists-keep-dying-of-this-deadly-lung-disease-the-cdc-cant-figure-out-why/?utm_term=.015450faf8d3

Discussion

Chances are you will most likely be citing online news sources. If this is the case, you will often not see a “section” or page numbers because news publishers reformat content for online environments and remove things like page numbers - which would mean nothing to online readers. However, if you do see this information online, include it! Additionally, if you are citing a print newspaper – or a PDF of an old print newspaper in a database, this is important information to include.

Basic Info

Author(s). Chapter title. In: Editor(s). Book Title. Edition. Publisher name; copyright year:pages of chapter or cited section. Accessed date [for books online]. URL [for books online/ebooks]

Print Book Example

1. Dillman DA, Smyth JD, Christian LM. Mixed-mode questionnaires and survey implementation. In: Internet, Phone, Mail, and Mixed-Mode Surveys: The Tailored Design Method. 4^th Ed. Wiley; 2014:398-448.

eBook Example

2. Harrington S. Citing sources is a basic skill learned early on. In: Ball CE, Loewe DM, eds. Bad Ideas About Writing. West Virginia University Digital Publishing Institute; 2017:242-246. https://textbooks.lib.wvu.edu/badideas/badideasaboutwriting-book.pdf

Discussion

1. If the author of the chapter cited is also the editor of the book, omit editor information.
2. To cite a book as a whole, rather than referring to an individual chapter or specific pages, do this: Author(s). Book Title. Edition. Publisher; year of publication. Accessed date (if online/ebook). URL (if online/ebook)
3. No edition number is needed for the first edition of a text. 

Basic Info

Author. Title or brief description.; year published. Accessed date. URL