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Comparative evaluation of sealing ability of glass ionomer-resin continuum as root-end filling materials: An in vitro study.

Chohan H, Dewan H, Annapoorna BM, Manjunath MK - J Int Soc Prev Community Dent (2015 Nov-Dec)

Bottom Line: The teeth were immersed in methylene blue for 48 h, split longitudinally, and dye penetration was measured.A highly significant difference existed in the mean dye penetration of Group I (conventional glass ionomer) and the other groups (resin-modified glass ionomer, polyacid-modified composite, and composite resin).There was no statistically significant difference among the three groups. (1) Significant difference was found in the dye penetration values of conventional glass ionomer cement and other groups. (2) No statistically significant difference was found in the dye penetration values of groups II, III, and IV.

View Article: PubMed Central - PubMed

Affiliation: Department of Conservative Dentistry and Endodontics, College of Dentistry, Jazan University, Jizan, Saudi Arabia.

ABSTRACT

Background and objectives: Root-end filling is a prudent procedure aimed at sealing the root canal to prevent penetration of tissue fluids into the root canals. An ideal root-end filling material should produce a complete apical seal. Therefore, the aim of this study is to compare the leakage behavior of four different root-end filling materials.

Materials and methods: Sixty-eight maxillary central incisors were obturated with laterally condensed gutta-percha and AH plus sealer. The roots were resected at the level of 3 mm perpendicular to the long axis of the tooth. Root-end cavities were prepared with straight fissure stainless steel bur. The teeth were then divided into four experimental and two control groups, and cavities restored as per the groupings. The teeth were immersed in methylene blue for 48 h, split longitudinally, and dye penetration was measured.

Results: A highly significant difference existed in the mean dye penetration of Group I (conventional glass ionomer) and the other groups (resin-modified glass ionomer, polyacid-modified composite, and composite resin). There was no statistically significant difference among the three groups.

Conclusions: (1) Significant difference was found in the dye penetration values of conventional glass ionomer cement and other groups. (2) No statistically significant difference was found in the dye penetration values of groups II, III, and IV.

No MeSH data available.


Related in: MedlinePlus

Specimen in dye
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Figure 3: Specimen in dye

Mentions: After restoring, the specimens were stored dry for 24 h and later, these were stored at 37°C and 100% humidity for 24 h. Then, the tooth surfaces in the experimental group were coated with two layers of nail varnish leaving the resected root ends. The teeth in negative control group were completely coated with two layers of varnish [Figure 3]. The teeth were immersed in a 2% methylene blue solution for 48 h. They were rinsed under water for 10 min and left to dry for 24 h. The teeth were then split longitudinally in a labiolingual direction. For this, two grooves were made on the labial and lingual surfaces of the specimen and then by using a sharp hand chisel, the specimens were split into two halves. The half which showed greater dye penetration was selected. Dye penetration was measured using a stereomicroscope (Leica Wild at 30× magnification) to score the extent of microleakage. The grading was done as follows [Figure 4]:


Comparative evaluation of sealing ability of glass ionomer-resin continuum as root-end filling materials: An in vitro study.

Chohan H, Dewan H, Annapoorna BM, Manjunath MK - J Int Soc Prev Community Dent (2015 Nov-Dec)

Specimen in dye
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4697234&req=5

Figure 3: Specimen in dye
Mentions: After restoring, the specimens were stored dry for 24 h and later, these were stored at 37°C and 100% humidity for 24 h. Then, the tooth surfaces in the experimental group were coated with two layers of nail varnish leaving the resected root ends. The teeth in negative control group were completely coated with two layers of varnish [Figure 3]. The teeth were immersed in a 2% methylene blue solution for 48 h. They were rinsed under water for 10 min and left to dry for 24 h. The teeth were then split longitudinally in a labiolingual direction. For this, two grooves were made on the labial and lingual surfaces of the specimen and then by using a sharp hand chisel, the specimens were split into two halves. The half which showed greater dye penetration was selected. Dye penetration was measured using a stereomicroscope (Leica Wild at 30× magnification) to score the extent of microleakage. The grading was done as follows [Figure 4]:

Bottom Line: The teeth were immersed in methylene blue for 48 h, split longitudinally, and dye penetration was measured.A highly significant difference existed in the mean dye penetration of Group I (conventional glass ionomer) and the other groups (resin-modified glass ionomer, polyacid-modified composite, and composite resin).There was no statistically significant difference among the three groups. (1) Significant difference was found in the dye penetration values of conventional glass ionomer cement and other groups. (2) No statistically significant difference was found in the dye penetration values of groups II, III, and IV.

View Article: PubMed Central - PubMed

Affiliation: Department of Conservative Dentistry and Endodontics, College of Dentistry, Jazan University, Jizan, Saudi Arabia.

ABSTRACT

Background and objectives: Root-end filling is a prudent procedure aimed at sealing the root canal to prevent penetration of tissue fluids into the root canals. An ideal root-end filling material should produce a complete apical seal. Therefore, the aim of this study is to compare the leakage behavior of four different root-end filling materials.

Materials and methods: Sixty-eight maxillary central incisors were obturated with laterally condensed gutta-percha and AH plus sealer. The roots were resected at the level of 3 mm perpendicular to the long axis of the tooth. Root-end cavities were prepared with straight fissure stainless steel bur. The teeth were then divided into four experimental and two control groups, and cavities restored as per the groupings. The teeth were immersed in methylene blue for 48 h, split longitudinally, and dye penetration was measured.

Results: A highly significant difference existed in the mean dye penetration of Group I (conventional glass ionomer) and the other groups (resin-modified glass ionomer, polyacid-modified composite, and composite resin). There was no statistically significant difference among the three groups.

Conclusions: (1) Significant difference was found in the dye penetration values of conventional glass ionomer cement and other groups. (2) No statistically significant difference was found in the dye penetration values of groups II, III, and IV.

No MeSH data available.


Related in: MedlinePlus