Factors for Successful Crowns Clinical Study

Study PI: Dr. Michael McCracken, University of Alabama at Birmingham

Brief study description

Key study publications:

Lawson NC, Litaker MS, Sowell E, Gordan VV, Mungia R, Ronzo KR, Lam BT, Gilbert GH, McCracken MS, National Dental PBRN Collaborative Group. Clinical acceptance of single-unit crowns and its association with impression and tissue displacement techniques: findings from the National Dental Practice-Based Research NetworkJournal of Prosthetic Dentistry 2020; in press. 

McCracken MS, Litaker MS, Thomson AES, Slootsky A, Gilbert GH, National Dental PBRN Collaborative Group. Laboratory technician assessment of the quality of single-unit crown preparations and impressions as predictors of clinical acceptability of crowns as determined by the treating dentist: findings from the National Dental Practice-Based Research NetworkJournal of Prosthodontics 2020; 29(2):114-123.

Lawson NC, Litaker MS, Ferracane JL, Gordan VV, Atlas AM, Rios T, Gilbert GH, McCracken MS, National Dental PBRN Collaborative Group. Choice of cement for single-unit crowns: findings from the National Dental Practice-Based Research NetworkJournal of the American Dental Association 2019; 150(6):522-530.

McCracken MS, Litaker MS, Gordan VV, Karr T, Sowell E, Gilbert GH, National Dental PBRN Collaborative Group. Remake rates for single-unit crowns in clinical practice: findings from the National Dental Practice-Based Research NetworkJournal of Prosthodontics 2019; 28(2):122-130.

Study protocol

Study data dictionary

Data set 1 (Data set link is best downloaded through Internet Explorer)

Data set 2 (Data set link is best downloaded through Internet Explorer)

Data set 3 (Data set link is best downloaded through Internet Explorer)

Data set 4 (Data set link is best downloaded through Internet Explorer)

Data set 5 (Data set link is best downloaded through Internet Explorer)

The clinical study involved the following forms:

Enrollment/Baseline: consecutive eligible patient log; patient characteristics form; crown preparation form; and laboratory checklist

Final Study Visit: crown insertion form

The laboratory completed the laboratory questionnaire to evaluate technical aspects of the impression and preparation.

If a patient no longer participated in the study, a discontinuation form is completed.