A comparison between two methods for gingival retraction (traditional and observational) on the marginal accuracy of the final models | Abstract

International Journal of Medical Research & Health Sciences (IJMRHS)
ISSN: 2319-5886 Indexed in: ESCI (Thomson Reuters)


A comparison between two methods for gingival retraction (traditional and observational) on the marginal accuracy of the final models

Author(s):Ghasem Shabani, Mohammad Sultan, Mohammad Mazen Kabbani and Maryam Khosravi

This study aims at comparing the appearance of the finish line using the observational method, and a new method in taking the impression and displacement of the gingival tissue without the gingival cord. In this research, Twenty one (21) patients were chosen. Who did not suffer from any supportive tissue diseases (such as inflammation or gingival bleeding). The patients needed crowns for their molars. Three impressions were taken from each patient, and the total number of impressions was 63.After preparation, the first impression was handled with the traditional method (putty – wash) without the gingival retraction. The second impression was handled with the observational method. All the final impressions were filled by Acryl, either completely or only for the prepared tooth area. After that, the bases were filled with gypsum. Cochran and McNemar test were used to study the differences among the two groups’ averages. Results have shown that there are statistical differences between the first and second group. It was concluded that the Traditional Method is better than the other one .Although the observational method is good, the traditional one is much better.

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