Quantification of Plastic Remnants on Titanium Surface after Instrumentation and Evaluation of Efficacy of Its Removal after Irrigation by using a Confocal Microscope

Nimisha Gopal, (2019) Quantification of Plastic Remnants on Titanium Surface after Instrumentation and Evaluation of Efficacy of Its Removal after Irrigation by using a Confocal Microscope. Masters thesis, Sri Ramakrishna Dental College and Hospital, Coimbatore.

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Abstract

Various procedures and instruments have been proposed to reduce the number of pathogenic species and consequently improve or preserve periodontal health around titanium implants. The procedures usually involves the removal of microbial deposits and debris without altering the surface of the implant in such a way as to adversely affect the biocompatibility. Plastic instruments have been used as it does not alter the surface. But instrumentation with plastic instruments have been known to leave behind some plastic remnants. These remnants can impair the biocompatibility of the implant surface. Hence, this study was conducted to quantify the surface area covered by plastic instruments after instrumentation using different plastic instruments on various surface modified titanium discs. The surface area covered by plastic debris was quantified using a confocal laser scanning microscope and MATLAB software. AIMS & OBJECTIVES: AIM OF THE STUDY: The aim of this in-vitro study was to quantify the surface area covered by plastic remnants on different surface modified titanium discs after instrumentation with various plastic instruments and to evaluate the efficacy of the removal of these remnants by using a confocal laser scanning microscope under non-simulated conditions. OBJECTIVES: 1. To quantify the plastic remnants on titanium discs that are sand blasted, acid etched, SLA treated and polished after instrumentation with various plastic instruments such as PEEK ultrasonic tip (EMS Piezon Systems), carbon composite ultrasonic tip (PH1, Satelec, Suprason) and plastic curette (Columbia 4R/4L, Hu Friedy) by confocal microscopy. 2. To evaluate the efficacy of the removal of these remnants after irrigation with water spray and 0.2% chlorhexidine for 10 seconds by confocal microscopy. 3. To compare the amount of plastic remnants remaining on various surface modified titanium discs after instrumentation and irrigation. STATISTICAL ANALYSIS: In this study, the mean areas and standard deviations were calculated for each group and subgroup. Statistical analysis was performed using One way ANOVA followed by Tukeys Post HOC test (SPSS version 16 for Windows, SPSS Inc.). The statistical significance of any differences was evaluated, with significance set at p < 0.05. RESULTS: i. Overall, Group I (Plastic curette-Hu Friedy) had the maximum surface area covered by plastic remnants followed by Group II (Carbon composite tip-Satelec) and the least was found with Group III (PEEK tip-EMS) after instrumentation and irrigation. The difference between the groups was found to be statistically significant. ii. Among the various surface modifications, it was found that sand blasted titanium discs retained the maximum plastic remnants followed by SLA. Polished titanium discs retained the least amount of plastic remnants as compared to sand blasted and SLA surfaces. The difference among the groups was found to be statistically significant. iii. Following irrigation with air-water spray and 0.2% chlorhexidine, it was found that Group I retained more plastic remnants compared to Group II and Group III. iv. Overall, it was found that plastic remnants remained after instrumentation, regardless of the irrigation method used. But it was found that the air-water spray had a better irrigating effect in removing the plastic remnants after instrumentation when compared to 0.2% chlorhexidine irrigation. CONCLUSION: From the results obtained in the present study, we can conclude that plastic remnants remained after instrumentation, irrespective of the instrument used. Among all the instruments used, PEEK tip (EMS) left behind the least plastic remnants after instrumentation and irrigation. Even though, air-water spray had a better irrigating effect in removing the remnants, complete removal was not possible. Further research is warranted to evaluate the irrigants and method of irrigation to ensure complete removal of plastic remnants which might impair the biocompatibility of the implant surface.

Item Type: Thesis (Masters)
Uncontrolled Keywords: Quantification of Plastic Remnants, Titanium Surface, Confocal Microscope.
Subjects: DENTAL > Periodontology
Depositing User: Subramani R
Date Deposited: 15 Aug 2019 02:32
Last Modified: 15 Aug 2019 02:32
URI: http://repository-tnmgrmu.ac.in/id/eprint/10872

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