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. 2013:2013:463073.
doi: 10.1155/2013/463073. Epub 2013 Aug 26.

Evaluation of the success criteria for zirconia dental implants: a four-year clinical and radiological study

Andrea Enrico Borgonovo  1 , Rachele Censi, Virna Vavassori, Marcello Dolci, Josè Luis Calvo-Guirado, Rafael Arcesio Delgado Ruiz, Carlo Maiorana
Affiliations

Evaluation of the success criteria for zirconia dental implants: a four-year clinical and radiological study

Andrea Enrico Borgonovo et al. Int J Dent. 2013.

Abstract

Objectives. The aim was to evaluate survival and success rates, soft tissue health, and radiographic marginal bone loss (MBL) of zirconia implants placed in the esthetic and posterior areas of the jaws and in association with multiple or single implant restorations after at least 6 months of definitive restoration. Material and Methods. 35 one-piece zirconium implants were utilized for single or partially edentulous ridges rehabilitation. All implants received immediate temporary restorations and six months after surgery were definitively restored. Every 6 months after implant placement, a clinical-radiographic evaluation was performed. For each radiograph, the measurements of MBL were calculated. Results. The results showed that the mean MBL at 48-month followup was 1.631 mm. The mean MBL during the first year of loading was not more significant for implants placed in the first molar regions than for those positioned in other areas. Moreover, no differences in marginal bone level changes were revealed for multiple and single implants, whereas MBL in the first year was observed to be slightly greater for implants placed in the maxilla than for those placed in the mandible. Conclusion. Zirconia showed a good marginal bone preservation that could be correlated with one-piece morphology and characteristics of zirconia implants.

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Figures

Figure 1
Figure 1
Implant characteristics.
Figure 2
Figure 2
Standardized periapical radiographs were obtained using the Rinn alignment system with customized silicone bite.
Figure 3
Figure 3
X-ray picture 12 months after surgery. The blue lines indicate the implant length; the red lines indicate the periimplant bone levels.
Figure 4
Figure 4
X-ray picture 24 months after surgery.
Figure 5
Figure 5
X-ray picture 48 months after surgery. No differences in marginal bone level changes can be observed from 12 to 48 months after surgery.
See this image and copyright information in PMC

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