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Comparative analysis of the retention of maxillary denture base with and without border molding using zinc oxide eugenol impression paste.

Kaur S, Datta K, Gupta SK, Suman N - Indian J Dent (2016 Jan-Mar)

Bottom Line: On both trays, the final impression was made with zinc oxide eugenol impression paste.Mean force with border molding (2765.0 g) was larger than mean force without border molding (1805.0 g) at P < 0.01 level.In terms of percentage, too, the mean improvement (59.4%) in force of dislodgement was statistically highly significant (i.e. P < 0.01).

View Article: PubMed Central - PubMed

Affiliation: Department of Prosthodontics, Sri Guru Ram Das Institute of Dental Sciences and Research, Amritsar, Punjab, India.

ABSTRACT

Aims and objectives: The purpose of the study was to determine the effect of border molding on the retention of the maxillary denture base.

Materials and methods: Two special trays, one with full extensions to the periphery and one 2 mm short from the borders were made on the cast obtained from the preliminary impression. Border molding was done on the tray which was short from borders. On both trays, the final impression was made with zinc oxide eugenol impression paste. Heat cure denture bases were fabricated on the prepared casts and retention was measured using specially designed instrument.

Observations and results: Mean force with border molding (2765.0 g) was larger than mean force without border molding (1805.0 g) at P < 0.01 level. In terms of percentage, too, the mean improvement (59.4%) in force of dislodgement was statistically highly significant (i.e. P < 0.01).

Clinical significance: The results of the present study suggest that the dentures made with border molding will provide better retentive force than the dentures made without border molding.

No MeSH data available.


Related in: MedlinePlus

(a) Resin tray 2 mm short from the sulcus. (b) Resin tray with full extensions to the sulcus
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Figure 3: (a) Resin tray 2 mm short from the sulcus. (b) Resin tray with full extensions to the sulcus

Mentions: In the region of cuspids and first molars, 2 mm wide strip of wax was cut and extended over the labio/buccopalatal aspect of the ridge to provide four stops in the resin tray for proper orientation of the tray in the mouth. The special trays of about 2–3 mm thickness were constructed over the cast by sprinkle method using an autopolymerizing acrylic resin [Figure 3a and b]. Resin handles were made in the anterior region of the trays. The trays were then separated from the cast and finished properly. The tray was checked in the mouth for extensions of the tray to be 2 mm short of the reflections of the mucobuccal fold. Border molding was done using green stick impression compound. The patient was asked to pronounce “OO”, “EE”, and movements of the mandible to right and left. While maintaining the 30° flexion of the head with the tongue firmly positioned against the resin handle, the patient was asked to periodically rotate the head to record all functional positions of the soft palate.


Comparative analysis of the retention of maxillary denture base with and without border molding using zinc oxide eugenol impression paste.

Kaur S, Datta K, Gupta SK, Suman N - Indian J Dent (2016 Jan-Mar)

(a) Resin tray 2 mm short from the sulcus. (b) Resin tray with full extensions to the sulcus
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4836091&req=5

Figure 3: (a) Resin tray 2 mm short from the sulcus. (b) Resin tray with full extensions to the sulcus
Mentions: In the region of cuspids and first molars, 2 mm wide strip of wax was cut and extended over the labio/buccopalatal aspect of the ridge to provide four stops in the resin tray for proper orientation of the tray in the mouth. The special trays of about 2–3 mm thickness were constructed over the cast by sprinkle method using an autopolymerizing acrylic resin [Figure 3a and b]. Resin handles were made in the anterior region of the trays. The trays were then separated from the cast and finished properly. The tray was checked in the mouth for extensions of the tray to be 2 mm short of the reflections of the mucobuccal fold. Border molding was done using green stick impression compound. The patient was asked to pronounce “OO”, “EE”, and movements of the mandible to right and left. While maintaining the 30° flexion of the head with the tongue firmly positioned against the resin handle, the patient was asked to periodically rotate the head to record all functional positions of the soft palate.

Bottom Line: On both trays, the final impression was made with zinc oxide eugenol impression paste.Mean force with border molding (2765.0 g) was larger than mean force without border molding (1805.0 g) at P < 0.01 level.In terms of percentage, too, the mean improvement (59.4%) in force of dislodgement was statistically highly significant (i.e. P < 0.01).

View Article: PubMed Central - PubMed

Affiliation: Department of Prosthodontics, Sri Guru Ram Das Institute of Dental Sciences and Research, Amritsar, Punjab, India.

ABSTRACT

Aims and objectives: The purpose of the study was to determine the effect of border molding on the retention of the maxillary denture base.

Materials and methods: Two special trays, one with full extensions to the periphery and one 2 mm short from the borders were made on the cast obtained from the preliminary impression. Border molding was done on the tray which was short from borders. On both trays, the final impression was made with zinc oxide eugenol impression paste. Heat cure denture bases were fabricated on the prepared casts and retention was measured using specially designed instrument.

Observations and results: Mean force with border molding (2765.0 g) was larger than mean force without border molding (1805.0 g) at P < 0.01 level. In terms of percentage, too, the mean improvement (59.4%) in force of dislodgement was statistically highly significant (i.e. P < 0.01).

Clinical significance: The results of the present study suggest that the dentures made with border molding will provide better retentive force than the dentures made without border molding.

No MeSH data available.


Related in: MedlinePlus