Original scientific paper
Evaluation of Periodontal and Periimplant Tissues in Patients with Dental Implants
Roberto Legović
; Dental Office Bušćina, Sveta Marija na Krasu, Croatia
Andrej Aurer
; Department of Periodontology School of Dental Medicine University of Zagreb, Zagreb, Croatia
Abstract
Aim: Comparison of periodontal and periimplant tissues in health, using clinical periodontal indices and semi-quantitative multiplex PCR method for detection of periodontal pathogens. Material and methods: Investigation included 25 subjects, 12 males and 13 females aged between 32 and 69 years. All subjects were treated with osseointegrated dental implants. Microbiological samples taken from pockets around natural teeth and implants were tested using commercially available PCR test for detection of 5 periodontal pathogens: Aa, Pg, Pi, Tf and Td. The obtained data were statistically analyzed using SPSS for Windows 16.0. Results: No statistically significant differences in periodontal parameters were found between natural teeth and implants, except for recession which was smaller in implants. Microbiological findings revealed an average of 3.56 pathogenic bacterial species around teeth and 3.5 bacterial species around implants per patient. Aa was present in 68.8% of the subjects around teeth and in 75% of the subjects around implants. Pg was present in 82% of the subjects around teeth and in 87% of the subjects around implants. For Pi these values were 32% and 25%, for Tf 88% and 94%, for Td 87% and 68%. Pi was detected in 32% of the subjects around teeth and in 25% of the subjects around implants. These differences between the groups were not statistically significant. Strong correlation between the time of implant placement and the presence of Td was found, a moderate correlation was found
for Aa and only weak correlation for Pi and Tf. Strong correlation was observed between the presence of the same bacterial species around teeth and implants for all tested periodontal pathogens (p<0.05). X-ray and PD revealed bone resorption around 4 from 49 implants, amounting to 8% of periimplantitis cases. All 3 patients had very high plaque and inflammation values. Of these, 2 harbored very high, and one harbored low levels of all tested periodontal pathogens. Conclusion: The combination of high plaque and bleeding values together with the presence of periodontal pathogens seems to be conductive to periimplantitis.
Keywords
Peri-Implantitis; Dental Implants; Dental Plaque; PCR
Hrčak ID:
84208
URI
Publication date:
10.7.2012.
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