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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) Preliminary cast showing markings for the wax spacer and resin tray to be made for secondary impression with border molding. (b) Preliminary cast showing markings for wax spacer and resin tray to be made for secondary impression without border molding
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Figure 2: (a) Preliminary cast showing markings for the wax spacer and resin tray to be made for secondary impression with border molding. (b) Preliminary cast showing markings for wax spacer and resin tray to be made for secondary impression without border molding

Mentions: The study was conducted in vivo on 20 edentulous patients with firm and normal ridges without undercuts, irrespective of the arch form and shape of the palatal vaults. The preliminary impression of the maxillary denture bearing area was made with impression compound in a stock tray [Figure 1]. The impression was poured in dental stone. Two customized trays of chemically activated resin were made on the cast as follows: Markings for the resin tray to be border molded were 2 mm short and 3 mm short for the wax spacer from the sulcus. Baseplate wax of 1 mm thickness was adapted on the cast to act as a spacer. The posterior palatal seal area on the cast was not covered with wax spacer [Figure 2a]. The resin tray was extended to the complete depth of the sulcus and wax spacer was kept 1 mm short of the sulcus for the tray on which border molding would not be carried out [Figure 2b].


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) Preliminary cast showing markings for the wax spacer and resin tray to be made for secondary impression with border molding. (b) Preliminary cast showing markings for wax spacer and resin tray to be made for secondary impression without border molding
© Copyright Policy - open-access
Related In: Results  -  Collection

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

Figure 2: (a) Preliminary cast showing markings for the wax spacer and resin tray to be made for secondary impression with border molding. (b) Preliminary cast showing markings for wax spacer and resin tray to be made for secondary impression without border molding
Mentions: The study was conducted in vivo on 20 edentulous patients with firm and normal ridges without undercuts, irrespective of the arch form and shape of the palatal vaults. The preliminary impression of the maxillary denture bearing area was made with impression compound in a stock tray [Figure 1]. The impression was poured in dental stone. Two customized trays of chemically activated resin were made on the cast as follows: Markings for the resin tray to be border molded were 2 mm short and 3 mm short for the wax spacer from the sulcus. Baseplate wax of 1 mm thickness was adapted on the cast to act as a spacer. The posterior palatal seal area on the cast was not covered with wax spacer [Figure 2a]. The resin tray was extended to the complete depth of the sulcus and wax spacer was kept 1 mm short of the sulcus for the tray on which border molding would not be carried out [Figure 2b].

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