Authors :
Kashish Manghani; Deshraj Jain; Alka Gupta; Mukesh Soni; Dr. Shweta Pandey
Volume/Issue :
Volume 8 - 2023, Issue 6 - June
Google Scholar :
https://bit.ly/3TmGbDi
Scribd :
https://tinyurl.com/3v25d3eb
DOI :
https://doi.org/10.5281/zenodo.8135074
Abstract :
Background :
Gingival retraction is crucial for impression
making in fixed prosthodontics. This invivo study aimed
at comparing the gingival retraction in vertical and
lateral axes produced by mechanical and chemical
retraction systems through digital impressions using
intraoral scanner.
Materials and Methods:
This in vivo, experimental study included 15
subjects,in which further 3 sample groups were allotted
making the sample size 45. The mean vertical and
lateral gingival displacement done by mechanical and
chemical methods was measured at five points of
maxillary anterior teeth after preparation on digital
impression files made through direct intraoral scanning.
Comparison of the mean values without retraction and
with different retraction systems were done. The results
were analyzed using the One-Way ANOVA,
unpaired/independent t test, The Shapiro–Wilk test and
Levene’s test.
Results :
The displacement cord, showed mean vertical
displacement to be 0.75 mm and the lateral displacement
1.13 mm. For the retraction paste, the resultant mean
vertical displacement was calculated to be 0.68 mm and
the lateral displacement 0.67 mm. For vertical
displacement, no significant differences were found
between the cord and the paste. But statistically
significant results were seen for the lateral displacement
between the same groups.
Conclusion:
The cord/mechanical system showed a greater
amount of displacement than the cordless/chemical
system. Intraoral scanning was found to be an effective
means of measuring gingival retraction.
Keywords :
Gingival Retraction, Gingival Displacement, Intra Oral Scanning, Digital Impression, Retraction Cord, Cordless, Retraction Paste.
Background :
Gingival retraction is crucial for impression
making in fixed prosthodontics. This invivo study aimed
at comparing the gingival retraction in vertical and
lateral axes produced by mechanical and chemical
retraction systems through digital impressions using
intraoral scanner.
Materials and Methods:
This in vivo, experimental study included 15
subjects,in which further 3 sample groups were allotted
making the sample size 45. The mean vertical and
lateral gingival displacement done by mechanical and
chemical methods was measured at five points of
maxillary anterior teeth after preparation on digital
impression files made through direct intraoral scanning.
Comparison of the mean values without retraction and
with different retraction systems were done. The results
were analyzed using the One-Way ANOVA,
unpaired/independent t test, The Shapiro–Wilk test and
Levene’s test.
Results :
The displacement cord, showed mean vertical
displacement to be 0.75 mm and the lateral displacement
1.13 mm. For the retraction paste, the resultant mean
vertical displacement was calculated to be 0.68 mm and
the lateral displacement 0.67 mm. For vertical
displacement, no significant differences were found
between the cord and the paste. But statistically
significant results were seen for the lateral displacement
between the same groups.
Conclusion:
The cord/mechanical system showed a greater
amount of displacement than the cordless/chemical
system. Intraoral scanning was found to be an effective
means of measuring gingival retraction.
Keywords :
Gingival Retraction, Gingival Displacement, Intra Oral Scanning, Digital Impression, Retraction Cord, Cordless, Retraction Paste.
