Journal article

Publication year: 2015

Pages: 2027-2034

Journal: Clinical Oral Investigations

Volume number: 19

Issue number: 8

ISSN: 1432-6981

eISSN: 1436-3771

DOI Link: https://doi.org/10.1007/s00784-015-1430-7

Publisher: Springer

Abstract: 

Objectives The purpose of this clinical study was to compare the marginal fit of dental crowns based on three different intraoral digital and one conventional impression methods.

Methods Forty-nine teeth of altogether 24 patients were prepared to be treated with full-coverage restorations. Digital impressions were made using three intraoral scanners: Sirona CEREC AC Omnicam (OCam), Heraeus Cara TRIOS and 3M Lava True Definition (TDef). Furthermore, a gypsum model based on a conventional impression (EXA'lence, GC, Tokyo, Japan) was scanned with a standard laboratory scanner (3Shape D700). Based on the dataset obtained, four zirconia copings per tooth were produced. The marginal fit of the copings in the patient's mouth was assessed employing a replica technique.

Results Overall, seven measurement copings did not fit and, therefore, could not be assessed. The marginal gap was 88 mu m (68-136 mu m) [median/interquartile range] for the TDef, 112 mu m (94-149 mu m) for the Cara TRIOS, 113 mu m (81-157 mu m) for the laboratory scanner and 149 mu m (114-218 mu m) for the OCam. There was a statistically significant difference between the OCam and the other groups (p < 0.05).

Conclusions Within the limitations of this study, it can be concluded that zirconia copings based on intraoral scans and a laboratory scans of a conventional model are comparable to one another with regard to their marginal fit.

Harvard Citation style: Boeddinghaus, M., Breloer, E., Rehmann, P. and Woestmann, B. (2015) Accuracy of single-tooth restorations based on intraoral digital and conventional impressions in patients, Clinical Oral Investigations, 19(8), pp. 2027-2034. https://doi.org/10.1007/s00784-015-1430-7

APA Citation style: Boeddinghaus, M., Breloer, E., Rehmann, P., & Woestmann, B. (2015). Accuracy of single-tooth restorations based on intraoral digital and conventional impressions in patients. Clinical Oral Investigations. 19(8), 2027-2034. https://doi.org/10.1007/s00784-015-1430-7