Effect of Sub-Gingival Margins Influencing Periodontal Health–A Systematic Review and Meta Analysis.
Dhanraj. M1, Benita. P. B. D. S1, Acu. Varma2 and Ashish. R. Jain21Department of Prosthodontics, Saveetha Dental College and Hospitals, Saveetha University, Chennai, India.
2Department of Prosthodontics, Saveetha Dental College and Hospital, Chennai, India.
Corresponding Author E-mail: dr.ashishjain_r@yahoo.com
Abstract: It is widely believed supra gingival restoration margins are more desirable than sub gingival margins with respect to periodontal health. Nevertheless sub gingival margins do have many indications and improved restorative materials with superior bio-compatibility has promoted placement of sub gingival margins . The long term effects of sub gingivally placed crown margins needs to be studied further in detail.To evaluate and compare the difference between supra gingival and sub gingival margins influencing periodontal health.An electronic search was conducted for scholarly articles about sub gingival margins influencing periodontal health. written in English or translated into English listed with Pubmed, Cochrane library, Science Direct, Wiley online library, Google scholar data bases, The NewYork Academy of Medicine Grey literature Report and Ingenta Connect till march 31st 2016. Research strategy identified 150 potential articles after reading the title and abstract 15 articles were selected and 4 articles satisfied the inclusion and exclusion criteria and 11 articles were excluded. The data was extracted , tabulated and subjected to meta analysis. A random effects model was chosen at 95% confidence interval. There was no statistically significant difference between the supra and subgingival margins with respect to plaque and gingival indices[ ( Z = 1.12, p = 0.26) ( Z = 0.22, p = 0.83 ) ] . However pocket depth showed a statistically significant difference ( Z = 0.86, p = 0.001). Both supra and sub gingival margins influence the periodontal health in a similar manner with respect to plaque accumulation and gingival health status,but an increase inpocket depth was observed with subgingival margins.
Keywords: Sub gingival margins; supra gingival margins; periodontal health Back to TOC