Table 1.

Summary of 38 Network Studies^* to Date

Study #	Study Title	Study Design	# of Practitioners	# of Patients/Other Entities	Study Type(s)	Classify as…	Included in Present Report
Phase 1 studies (2007 to 2012, network not nationwide)
Included in present report
3	Assessment of caries diagnosis and treatment	Paper Qx to dentists	494	—	Qx	Qx	Yes
4	Reasons for placing the first restoration on permanent tooth surfaces	Cross-sectional; consecutive patients	192	4844 patients	Clinical	Clinical	Yes
5	Reasons for replacement or repair of dental restorations	Cross-sectional; consecutive patients	157	6092 patients	Clinical	Clinical	Yes
6	CONDOR case-control study of ONJ	Case-control study	81	764 patients	Clinical	Clinical	Yes
8	Longitudinal study of dental restorations placed on previously un-restored surfaces	Prospective cohort study	192	4844 patients	Clinical	Clinical	Yes as FU
9	Longitudinal study of repaired or replaced dental restorations	Prospective cohort study	157	6092 patients	Clinical	Clinical	Yes as FU
10	Development of a patient-based provider intervention for early caries management	Cross-sectional; clinical data collection and Qx	10	336 patients	Qx and Clinical	Clinical	Clinical only
12	Prevalence of questionable occlusal caries lesions	Cross-sectional	58	4478 patients	Clinical	Clinical	Yes
13	Longitudinal study of questionable occlusal caries lesions	Prospective cohort study	58	4478 patients	Clinical	Clinical	Yes as FU
15	Blood glucose testing in dental practice	Cross-sectional	23	387 patients	Clinical	Clinical	Yes
16a	Assessing the impact of participation in PBRNs on patient care	Paper Qx with dentists and dental hygienists	613	—	Qx	Qx	Yes
16b	Assessing the impact of participation in PBRNs on patient care - repeated 2 years	Paper Qx with dentists and dental hygienists	556	—	Qx	Qx	Yes
17	Peri-operative pain and root canal therapy	1-week prospective cohort study	55	655 patients	Clinical	Clinical	Yes
20	Primary care management of TMJD	Electronic Qx with dentists	434	—	Qx	Qx	Yes
21	Infrastructure update survey	Electronic Qx with dentists	649	—	Qx	Qx	Yes
Excluded from present report
1	Dental tobacco control RCT	Randomized clinical trial	190	11,898 patients	Qx and Clinical	Clinical	No
2	Practice-based root canal treatment effectiveness	Retrospective cohort study	13	84 patients	Clinical	Clinical	No
7	Retrospective cohort study of ONJ	Retrospective cohort study using electronic data	—	572,606 patients	Clinical	Clinical	No
11	Patient satisfaction with dental restorations	Cross-sectional	159	4680 patients	Clinical	Clinical	No
14	Hygienists' internet tobacco cessation RCT	Randomized clinical trial	100	1814 patients	Clinical	Clinical	No
18	Persistent pain and root canal therapy	Prospective cohort study	55	655 patients	Clinical	Clinical	No
19	Diagnoses for persistent dentoalveolar pain following root canal therapy	Nested case series study	63	354 patients	Clinical	Clinical	No
Phase 2 studies (2013 to 2017, network was nationwide)
Included in present report
22	Isolation techniques used when performing root canal treatment	Electronic and paper Qx with dentists	1491	—	Qx	Qx	Yes
23	Management of suspicious occlusal caries lesions	Randomized clinical trial	125	3093 patients	Qx; Clinical	Clinical	Yes
24	Management of dentin hypersensitivity (2 parts)	#1: electronic Qx with dentists	200	1,876 patients	Qx; Clinical	Clinical	Clinical only
		#2: prospective cohort study	200	1,876 patients	Qx; Clinical	Clinical	Clinical only
25	Reducing prescription opioid misuse	Electronic Qx with dentists	822	—	Qx	Qx	Yes
28	Factors for Successful Crowns Stage 1	Electronic Qx with dentists	1852	—	Qx	Qx	Yes
29	Factors for Successful Crowns Stage 2	Prospective cohort study	207	3847 patients	Clinical	Clinical	Yes
32	Cracked tooth registry study	Prospective cohort study	236	3017 patients	Clinical	Clinical	Baseline only
34	Anterior open-bite treatment	Prospective cohort study	96	358 patients	Clinical	Clinical	Baseline only
Excluded from present report
26	Understanding dental information networks	Electronic Qx with dentists	1860	—	Qx	Qx	No
27	Quit Advisor DDS smoking cessation study	Feasibility non-randomized controlled clinical trial	30	248 patients	Clinical	Clinical	No
30	Leveraging EDR data for clinical research	EDR extraction of patients who received root canal treatment and select restorations	99	1,207,155 procedures	Clinical	Clinical	No
31	Common practices of head & neck examinations in U.S. dental offices	Electronic and paper Qx with dentists	1126	—	Qx	Qx	No
33	Risk for oral cancer/HPV study	Prospective cohort study	37	1025 patients	Clinical	Clinical	No
35	Predicting root canal treatment outcomes	Prospective cohort study	172	1883 patients	Clinical	Clinical	No
36	TMD treatment methods	Prospective cohort study	198	1576 patients	Clinical	Clinical	No
37	Multi-risk assessment in the dental office	3 parts planned, Qx, cohort, then telephone interviews with insurance executives	Planned	810 patients; 20 dental insurance executives	Qx, Clinical	Clinical	No
38	Prophylactic use of antibiotics in dental office	Electronic and paper Qx with dentists	2500 (planned)	—	Qx	Qx	No

↵* Study number refers to order in which study was implemented.
Detailed study information can be accessed at http://nationaldentalpbrn.org/studies.php.
CONDOR, Collaboration on Networked Dental and Oral Health Research; DDS, Doctor of Dental Surgery; EDR, Electronic Dental Records; FU, Follow-up; HPV, Human Papilloma Virus; ONJ, Osteonecrosis of the Jaw; PBRNs, Practice Based Research Networks; Qx, Questionnaire; RCT, Root Canal Therapy; TMD, Temporomandibular Disorder; TMJD, Temporomandibular Joint Disorder.