Cerec Finland

1. Laboratoriokokeissa Cerec Bluecam ja Lava chairside oral scannerin tarkkuus on sama tai parempi kun perinteiset jäljennösaineet

Int J Comput Dent. 2011;14(1):11-21. in vitro Full arch scans: conventional versus digital impressions–an in-vitro study.

The deviation from the master model defines the trueness of the impression method. The deviations of the models among one another demonstrate the precision of the method. The trueness of the impressions was 55 +/- 21.8 microm in the conventional impression group, for digital impressions with Cerec Bluecam it was 49 +/- 14.2 microm and for digital impressions with Lava COS 40.3 +/- 14.1 microm. The precision was 61.3 +/- 17.9 microm for conventional impression with Impregum, 30.9 +/- 7.1 microm for digital impression with the Cerec Bluecam and 60.1 +/- 31.3 microm for digital impression with Lava COS

2. Potilaskokeissa Lava chairside oral scannerilla merkitsevästi parempi marginaalinen istuvuus ja paremmat kontaktit kuin tavanomaisella jäljennöksellä. Purennallisesti molemmat jäljennöstavat olivat yhtä hyviä.

J Dent. 2010 Jul;38(7):553-9. doi: 10.1016/j.jdent.2010.03.015. Epub 2010 Apr 8. Clinical evaluation of all-ceramic crowns fabricated from intraoral digital impressions based on the principle of active wavefront sampling.

In vivo 20 patients   Lava Chairside Oral Scanner (Lava C.O.S.), and the other crown from a two-step silicone impression CONCLUSIONS: 1. Crowns from intraoral scans revealed significantly better marginal fit than crowns from silicone impressions. 2. Marginal discrepancies in both groups were within the limits of clinical acceptability. 3. Crowns from intraoral scans tended to show better interproximal contact area quality. 4. Crowns from both groups performed equally well with regard to occlusion.

3. Proteettisten rakenteiden kriittisimmät kohdat eli sauma-alueet saadaan paremmin jäljennettyä ja mallinnettua digitaalisena

J Prosthet Dent. 2014 Sep;112(3):555-60. doi: 10.1016/j.prosdent.2013.12.002.  A comparison of the marginal fit of crowns fabricated with digital and conventional methods

Results: A total of 240 images (2 groups, 15 crowns per group, 8 sites per crown) were recorded and measured. The overall mean ±SD vertical gap measurement for the digitally made crowns was 48 ±25 μm, which was significantly smaller than that for the conventionally made crowns (74 ±47 μm).

4. Jäljennösten otto on yli puolet nopeampaa ja potilaalle huomattavasti mukavampaa (24 potilaasta jokainen valitsisi jäljennöstavaksi digitaalisen)

BMC Oral Health. 2014; 14: 10. Published online Jan 30, 2014. doi:  10.1186/1472-6831-14-10, PMCID: PMC3913616 Comparison of digital and conventional impression techniques: evaluation of patients’ perception, treatment comfort, effectiveness and clinical outcomes