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Open Dent J. 2018 Jan 31;12:118-124. doi: 10.2174/1874210601812010118. eCollection 2018.

Conventional Vs Digital Impressions: Acceptability, Treatment Comfort and Stress Among Young Orthodontic Patients.

Author information

Private practice, Piazza Trento 4, 22015 Gravedona ed Uniti, Como, Italy.
Private practice, Casale Monferrato, Alessandria, Italy.
Department of Oral and Maxillofacial Surgery, University of Naples, Naples, Italy.
Department of Dental Sciences, S. Raffaele University, Milan, Italy.
Department of Surgical and Morphological Science, Dental School, University of Varese, Varese, Italy.



The objective of the present study was to compare patients' acceptability, comfort and stress with conventional and digital impressions.

Materials and Methods:

Thirty young orthodontic patients (15 males and 15 females) who had no previous experience of impressions were enrolled in this study. Conventional impressions for orthodontic study models of the dental arches were taken using an alginate impression material (Hydrogum®, Zhermack Spa, Badia Polesine, Rovigo, Italy). Fifteen days later, digital impressions of both arches were acquired using an intraoral scanner (CS3600®, Carestream Dental, Rochester, NY, USA). Immediately after impression taking, patients' acceptability, comfort and stress were measured using two questionnaires and the State anxiety scale.


Data showed no difference in terms of anxiety and stress; however, patients preferred the use of digital impressions systems instead of conventional impression techniques. Alginate impressions resulted as fast as digital impressions.


Digital impressions resulted the most accepted and comfortable impression technique in young orthodontic patients, when compared to conventional techniques.


Alginate impressions; Comfortable impression technique; Digital impressions; Intraoral scanners; Patients’ preferences; Treatment comfort

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