TITLE

The Effect of Displacement Time on Gingival Crevice Width

AUTHOR(S)
Baharav, Haim; Laufer, Ben-Zion; Langer, Yair; Cardash, Harold S.
PUB. DATE
May 1997
SOURCE
International Journal of Prosthodontics;May/Jun1997, Vol. 10 Issue 3, p248
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The authors investigated the length of time medicated displacement cord should remain in the gingival crevice prior to impression making. A silk cord (Deknatel) was placed into the sulcus and was not removed during the study. Medicated cords (Hemodent on Ultrapak #1) were placed into the gingival sulcus for 2, 4, 6, and 8 minutes. Following cord removal, closure of the sulcus was recorded at intervals using a miniature video camera. Crevicular widths were measured at the midbuccal and transitional line angle areas. At both the midbuccal and transitional line angle areas, gingival crevices displaced for 2 minutes were significantly smaller at 20 seconds (P < .05) than crevices following displacement for 4, 6, and 8 minutes. No significant difference in crevicular width was found at any time period after cord removal for crevices displaced for 4, 6, and 8 minutes. At the transitional line angle, crevicular widths were significantly smaller than at the midbuccal at 20 seconds for all times and remained so up to 180 seconds. To achieve a crevicular width of 0.2 mm, cord should remain in the gingival crevice for an optimum time of 4 minutes prior to impression making when using the materials evaluated in this study.
ACCESSION #
37703496

 

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