A comparison study: The use of digital and conventional impression techniques in dental hygiene education

PURPOSE/OBJECTIVES

The study aimed to assess the applicability of digital intraoral scanning in dental hygiene education and compare the quality, efficiency, and ease of use to conventional impression techniques.

METHODS

Twenty-eight first-year dental hygiene students (DH1) at UTHealth Houston School of Dentistry (UTSD) participated in this 2022 study. Each student participated in two 4-h lab sessions. Students took traditional alginate impressions and digital intraoral scans using Planmeca Romexis on standardized teeth during the first and second sessions. Both techniques were assessed by faculty for quality and efficiency using a standardized rubric. Participants completed a post-survey providing insight into their perceptions of both techniques and ease of use.

RESULTS

The study had 100% participation in the lab sessions and survey responses (N = 28). The results showed digital scanning produced a statistically higher quality product than conventional alginate impressions (p = 0.023). The study found no statistical difference in the efficiency between the two methods. The majority of students (82%) agreed that digital intraoral scanning was easy to use (p = 0.001), and 89% agreed they would use digital intraoral scanning in clinical courses to help with patient care (p = 0.03).

CONCLUSION

In this study, dental hygiene students with limited clinical experience learned new technology and used it to produce quality impressions compared to the conventional technique, indicating the value of introducing digital dentistry early in dental hygiene education.