Histological Investigation Of Gingival Reaction To Direct Polymethyl Methacrylate Provisional Restorations
Journal Title: Journal of Medical Science And clinical Research - Year 2014, Vol 2, Issue 7
Abstract
Purpose: This investigation evaluated the possible histological reactions to chairside fabricated methyl methacrylate provisional restorations depending on the time span. Materials and methods: Participants included 30 patients recruited for fixed restorations, where gingival recontouring was indicated to improve esthetics or retention. The teeth were prepared, and provisional restorations were performed by the direct technique to protect the residual tissue, and to be used as index for gingivectomy to harmonize the margins. The cut gingival band was utilized for histological assessment. Patients, who irregularly returned for surgical appointment, took longer periods with provisional restorations in the oral cavity, renewed an appointment for surgery and participated in the study too. The periods were marked and correlated with histological findings. Results: Histological findings recorded a high rate of acute inflammation for gingiva surrounding provisional restorations of one to two months in the oral cavity (14 cases). Chronic inflammations were www.jmscr.igmpublication.org Impact Factor 1.1147 Histological Investigation Of Gingival Reaction To Direct Polymethyl Methacrylate Provisional Restorations Authors Dalenda Hadyaoui1 , Amina Khiari2 , Mohamed Ben Khlifa3 , Mounir Cherif4 1Associate professor Department of Fixed Prosthodontics, Faculty of Dental Medicine, University of Monastir, Tunisia. 2Resident Department of Fixed Prosthodontics, Faculty of Dental Medicine, University of Monastir, Tunisia. 3 Professor Department of Dental Medicine, Fattouma Bourguiba University Hospital Monastir 4 Professor Department of Fixed Prosthodontics, Faculty of Dental Medicine, University of Monastir, Tunisia. Email: dalendaresearch@gmail.com, amina_khiari@hotmail.fr,mohamed.benkhelifa@rns.tn, mchrif@hotmail.com ISSN (e)-2347-176x JMSCR Volume||2||Issue||7||Page 1719-1728||July 2014 2014 Dalenda Hadyaoui et al JMSCR Volume 2 Issue 7 July 2014 Page 1720 JMSCR Volume||2||Issue||7||Page 1719-1728||July 2014 2014 scored but with a low rate (6 cases). Only two cases showed no reactions. For a period of more than two months, no acute inflammation was recorded, but chronic inflammations (2cases) and candidiasis (1case). However, fibrosis and ulcerations were independent from the time span as recorded in periods less than 2 months and in a case of more than 3 months (1 case of fibrosis). Conclusion: The histological analysis of gingiva surrounding polymethyl methacrylate provisional restorations fabricated directly in the oral cavity proves that it may induce various gingival reactions despite the exceptional absence of any tissular reaction in some cases. This corroborates the in vitro studies demonstrating the cytotoxicity of these materials
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Dalenda Hadyaoui
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