Digital versus analog complete-arch impressions for single-unit premolar implant crowns: Operating time and patient preference

Abstract Statement of problem Digital impression-making techniques are supposedly more patient friendly and less time-consuming than analog techniques, but evidence is lacking to substantiate this assumption. Purpose The purpose of this in vivo within-subject comparison study was to examine patient...

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Bibliographic Details
Published in:The Journal of prosthetic dentistry 2015-09, Vol.114 (3), p.403-406.e1
Main Authors: Schepke, Ulf, DDS, Meijer, Henny J.A., DDS, PhD, Kerdijk, Wouter, PhD, Cune, Marco S., DDS, PhD
Format: Article
Language:English
Subjects:
Bicuspid
Computer-Aided Design
Crowns
Dental Implants
Dental Impression Materials
Dental Impression Technique
Dental Models
Dentistry
Humans
Patient Preference
Resins, Synthetic
Surveys and Questionnaires
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Summary:Abstract Statement of problem Digital impression-making techniques are supposedly more patient friendly and less time-consuming than analog techniques, but evidence is lacking to substantiate this assumption. Purpose The purpose of this in vivo within-subject comparison study was to examine patient perception and time consumption for 2 complete-arch impression-making methods: a digital and an analog technique. Material and methods Fifty participants with a single missing premolar were included. Treatment consisted of implant therapy. Three months after implant placement, complete-arch digital (Cerec Omnicam; Sirona) and analog impressions (semi-individual tray, Impregum; 3M ESPE) were made, and the participant’s opinion was evaluated with a standard questionnaire addressing several domains (inconvenience, shortness of breath, fear of repeating the impression, and feelings of helplessness during the procedure) with the visual analog scale. All participants were asked which procedure they preferred. Operating time was measured with a stopwatch. The differences between impressions made for maxillary and mandibular implants were also compared. The data were analyzed with paired and independent sample t tests, and effect sizes were calculated. Results Statistically significant differences were found in favor of the digital procedure regarding all subjective domains ( P
ISSN:0022-3913
1097-6841
DOI:10.1016/j.prosdent.2015.04.003