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Name | Identification of marginal defects in fixed Prosthodontic restorations for successful treatment outcome: A research study |
Description | Research article:-Prosthodontics and Dental Materials Kapoor Vikram1*,C. Nisha1,Kumar Narendra2 & Singh Kunwarjeet3 1Senior lecturer,2Professor and Head,3Reader Department of Prosthodontics and Dental Materials, Institute of Dental Studies and Technologies, Modinagar, Uttar Pradesh, India.
Abstract: Background & Objectives: Fixed Prosthodontics is one of the most commonly practiced treatment modality throughout World. With the advent of latest advancements in the field of Fixed Prosthodontics, failure rate have also increased. A poor marginal integrity accounts for most of these failures. This study was undertaken to determine the comparative accuracy of six different probes in evaluating marginal gap and to check the influence of vision on evaluation of marginal discrepancies in restorations. Method: Thirty evaluators post graduate students from Bapuji Dental College and Hospital, Davangere were chosen at random. Two stainless steel plates were made. Grooves of known dimensions ranging from 35um - 165um were machined onto the surface. In order to avoid conditioning bias, on one plate the grooves were arranged in a random order. The evaluators were asked to indicate the presence of the grooves present on the plates through probing in direct vision and indirect vision (by using a barrier). Statistical Analysis: The statistical analysis was carried out using the Statistical Package for Social Scientists (SPSS), Repeated Measures of ANOVA (f), Intraclass Correlation Co-efficient (ICC) and Karl Pearson’s Correlation Co-efficient (r). Results and Conclusion: The results showed that probe with the least tip diameter is the most accurate in identification of marginal discrepancy and that the bluntest probe is the least accurate. The results also indicated that there was no significant difference in evaluating marginal gap under direct vision or indirect vision, although, evaluation under direct vision was better. Key words: Marginal integrity; probes; vision.
References: 1.Bronson Michael R., Lindquist Terry J. and Dawson Deborah V.: Clinical Acceptability of Crown Margins Versus Marginal Gaps as Determined by Pre-Doctoral Students and Prosthodontists. J. Prosthodont. 2005; 14: 226-32. 2.Jahangiri leila et al. Assessment of sensitivity and specificity of clinical evaluation of cast restoration marginal accuracy compared to stereomicroscopy. J. Prosthet. Dent. 2005; 93: 138-42. 3.Jacobs Michael S. and Windeler Stewart A.: An investigation of dental luting cement solubility as function of the marginal gap. J. Prosthet. Dent. 1991; 65: 436-42. 4.Walton Joanne N., Gardner Michael F. and Agar John R.: A survey of crown and fixed partial denture failures: Length of service and reasons for replacement. J. Prosthet. Dent. 1986; 56: 416-21. 5.Hayashi M. et al. Influence of Vision on the Evaluation of Marginal Discrepancies in Restorations. Operative Dentistry. 2005; 30: 598-601. 6.B’aldissara P., Baldissara S. and Scotti R.: Reliability of tactile perception using sharp and dull explorers in marginal opening identification. Int. J. Prosthodont. 1998; 11 : 591-4. 7.Christensen G.J.: Marginal fit of gold inlay castings. J. Prosthet. Dent. 1966; 16: 297-306. 8.Byrne G.: Influence of finish line form on crown cementation. Int. J. Prosthodont 1992; 5 :137-44. 9.Hunter A.J. and Hunter A.R.: Gingival margins for crowns: A review and discussion. Part II: Discrepancies and configurations. J. Prosthet Dent.1990; 64: 636-42. 10.Dedmon H.W.: Disparity in expert opinions on size of acceptable margin openings. Operative dentistry; 1982, 7: 97-101. 11.Rappold A.P., Ripps A.H and Ireland E.J : Sharpness as related to margin evaluations. Operative dentistry. 1992; 17: 2-6.
Copyright © 2013 Kapoor Vikram. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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