CeraRoot implants seem to better preserve the surrounding bone. The implants are more easy to maintain with no prosthetic sub-gingival connections. Being one-piece structure, there are no gaps where bacteria can grow.
The following clinical case performed in 2006 (7 years follow-up), is an example of how CeraRoot implants are capable to resist difficult intra-oral conditions such as high ingestion of processed sugar that cause destroy natural teeth. In this case, CeraRoot implants have not lost bone around the implants and the surrounding gum is as healthy as the gum surrounding the natural dentition.
The International Journal of Oral and Maxillofacial Implants (JOMI) has recently published the 5-year follow-up study of CeraRoot zirconia Implants .
Purpose: The aim of this study was to evaluate the 5-year success rate of zirconia (ZrO2) implants with three different kinds of surfaces.Materials and Methods:One-piece zirconia dental implants (CeraRoot) with three different roughened surfaces were designed and manufactured for this study: coated, uncoated, and acid-etched. Five different implant designs were manufactured. Standard or flapless surgical procedures were used for implant placement. Simultaneous bone augmentation or sinus elevation was performed when bone height or width was insufficient. Definitive all-ceramic restorations were placed 4 months after implant placement (8 months or more for implants when bone augmentation or sinus elevation was performed). The implants were followed up to 5 years (mean, 3.40 +/- 0.21). Results: In all, 831 implants were placed in 378 patients with a mean age of 48 years. The overall implant success rate after 5 years of follow-up was 95% (92.77% for uncoated implants, 93.57% for coated implants, and 97.60% for acid-etched implants). The success rate of the acid-etched surface group was significantly better than that of the other two. Conclusion: From this midterm investigation, it can be concluded that zirconia dental implants with roughened surfaces might be a viable alternative for tooth replacement. Further follow-up is needed to evaluate the long-term success rates of the implant surfaces studied. Int J Oral Maxillofac Implants 2010;25:336-344.
Osseointegration of Zirconia (Y-TZP) Dental Implants: A Histologic, Histomorphometric and Removal Torque. Study in the Hip of Sheep. Download.
Objectives: The purpose of the present study was to demonstrate the biocompatibility and rigid osseointegration of a zirconia (Y-TZP) dental implant with acid-etched surface. Materials and methods: Eight zirconia (Y-TZP) implants (CeraRoot, Barcelona) were inserted in the hip of an adult sheep. The animal was sacrificed after 2 months. Four implants were used for histology and histomorphometric analysis, and the other four implants were used for removal torque test (RTQ). Results: The histological evaluation showed a direct bone to implant contact (BIC) with no signs of inflammatory or foreign body reaction. The histomorphometric analysis values ranged from 79.5 to 79.9% of BIC. The RTQ showed values ranging from 75 to 83 Ncm. Discussion: In this animal study, the biocompatibility of CeraRoot zirconia (Y-TZP) implants was demonstrated with the histologic observations of healthy bone tissue in direct contact with the zirconia (Y-TZP) implant surface. Moreover, the histomorphometric analysis and the RTQ confirmed a rigid fixation of the implant within the bone. Comparative studies with
acid-etched titanium implants are needed to further evaluate the characteristics of CeraRoot zirconia dental implants.
40x magnification of a CeraRoot 12 at 2 months post-surgery