Comparison of bacterial colonization of implant abutment internal recess in internal hex and conical connection implants: An in vivo prospective study
Aim: Microbial assessment of internal recess of two different internal implant connections in an in vivo study. Study Settings and Design: This randomized, in vivo study included 40 patients requiring mandibular single-tooth implant-supported prostheses, allocated into two equal groups based on impl...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wolters Kluwer Medknow Publications
2025-07-01
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| Series: | The Journal of Indian Prosthodontic Society |
| Subjects: | |
| Online Access: | https://journals.lww.com/10.4103/jips.jips_49_25 |
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| Summary: | Aim:
Microbial assessment of internal recess of two different internal implant connections in an in vivo study.
Study Settings and Design:
This randomized, in vivo study included 40 patients requiring mandibular single-tooth implant-supported prostheses, allocated into two equal groups based on implant connection design.
Materials and Methods:
Group Internal Hex (IH) and group Conical Connection (CC) received implants with IH and CC, respectively. On the day of prosthetic loading, peri-implant sulcular fluid (PISF) sample was collected and stored. PISF samples were recollected after 3 months. Subsequently, the screw access hole was exposed, and the abutment screw was removed. Implant-abutment recess was washed with saline, lavage was sent for microbiological assay. The abutment screw and crown were restored. PISF was analyzed for interleukin-6 (IL-6).
Statistical Analysis Used:
For nonparametric values Chi square test and for parametric values t-test was used to analyse the data.
Results:
No implant failure or patient fallout was observed. In Group IH, 17 out of 20 samples were positive for aerobic viz-a-viz 7 samples from Group CC; P = 0.001. For anaerobic bacteria, similar results were obtained with a number of positive samples 19 as compared to 6 in respective groups; P = 0.00002. IL-6 values did not differ significantly from baseline to 3 months in either group.
Conclusion:
Within the limitations of the study, results show higher bacterial contamination of implant recess in IH than CC. However, the bacterial load had an insignificant contribution to IL-6 levels in PISF of the patients of either group in this time period. |
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| ISSN: | 0972-4052 1998-4057 |