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In-vitro Evaluation of Transverse Strength of Repaired Heat Cured Denture Base Resins without Surface Treatment and with Chemical and Mechanical Surface Treatment.

Yadav NS, Khare S, Mishra SK, Vyas R, Mahajan H, Chitumalla R - J Int Oral Health (2015)

Bottom Line: Specimens were repaired with auto polymerizing acrylic resin using sprinkle on technique.A two-way analysis of variance revealed that there was statistically significant difference in mean strengths of the three groups.Surface chemical treatment with ethyl acetate improved the transverse strength of the repaired heat cure denture base when compared with mechanical roughening with bur and group without surface treatment.

View Article: PubMed Central - PubMed

Affiliation: Professor, Department of Maxillofacial Prosthodontics and Implantology, Peoples Dental Academy, Bhopal, Madhya Pradesh, India.

ABSTRACT

Background: Denture repair involves joining two parts of a fractured denture with a denture repair material. Hence, a substantial repairing system for denture base fracture should be there to elude frequent fracture.

Materials and methods: Surface treatment of conventional heat cure denture base resin with different surface treatments (chemical ethyl acetate, and mechanical roughening with bur), with control group formed without surface treatment. Specimens were repaired with auto polymerizing acrylic resin using sprinkle on technique. The testing of the transverse strength of the repaired specimens was evaluated with three-point bending test on universal testing machine.

Results: The study revealed that surface chemical treatment with ethyl acetate improved the transverse strength of repaired heat cure denture base when compared with mechanical and control group. A two-way analysis of variance revealed that there was statistically significant difference in mean strengths of the three groups.

Conclusion: Surface chemical treatment with ethyl acetate improved the transverse strength of the repaired heat cure denture base when compared with mechanical roughening with bur and group without surface treatment.

No MeSH data available.


Related in: MedlinePlus

Testing of a specimen on three-point universal testing machine.
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Figure 2: Testing of a specimen on three-point universal testing machine.

Mentions: The testing of the transverse strength of the repaired specimen was carried out on the universal testing machine. The acrylic resin specimens were held in the fixture attached to the machine. Each specimen was subjected to the three-point bending test at a crosshead speed of 5 mm/min at a 20 mm distance (Figure 2). The load was applied perpendicular to the center of the repaired area. The direction of the load was similar to the load direction that affects repaired maxillary complete denture. The force required to fracture the denture base was recorded in kilograms. The transverse strength (S) of each specimen was calculated using the following formula:


In-vitro Evaluation of Transverse Strength of Repaired Heat Cured Denture Base Resins without Surface Treatment and with Chemical and Mechanical Surface Treatment.

Yadav NS, Khare S, Mishra SK, Vyas R, Mahajan H, Chitumalla R - J Int Oral Health (2015)

Testing of a specimen on three-point universal testing machine.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4588798&req=5

Figure 2: Testing of a specimen on three-point universal testing machine.
Mentions: The testing of the transverse strength of the repaired specimen was carried out on the universal testing machine. The acrylic resin specimens were held in the fixture attached to the machine. Each specimen was subjected to the three-point bending test at a crosshead speed of 5 mm/min at a 20 mm distance (Figure 2). The load was applied perpendicular to the center of the repaired area. The direction of the load was similar to the load direction that affects repaired maxillary complete denture. The force required to fracture the denture base was recorded in kilograms. The transverse strength (S) of each specimen was calculated using the following formula:

Bottom Line: Specimens were repaired with auto polymerizing acrylic resin using sprinkle on technique.A two-way analysis of variance revealed that there was statistically significant difference in mean strengths of the three groups.Surface chemical treatment with ethyl acetate improved the transverse strength of the repaired heat cure denture base when compared with mechanical roughening with bur and group without surface treatment.

View Article: PubMed Central - PubMed

Affiliation: Professor, Department of Maxillofacial Prosthodontics and Implantology, Peoples Dental Academy, Bhopal, Madhya Pradesh, India.

ABSTRACT

Background: Denture repair involves joining two parts of a fractured denture with a denture repair material. Hence, a substantial repairing system for denture base fracture should be there to elude frequent fracture.

Materials and methods: Surface treatment of conventional heat cure denture base resin with different surface treatments (chemical ethyl acetate, and mechanical roughening with bur), with control group formed without surface treatment. Specimens were repaired with auto polymerizing acrylic resin using sprinkle on technique. The testing of the transverse strength of the repaired specimens was evaluated with three-point bending test on universal testing machine.

Results: The study revealed that surface chemical treatment with ethyl acetate improved the transverse strength of repaired heat cure denture base when compared with mechanical and control group. A two-way analysis of variance revealed that there was statistically significant difference in mean strengths of the three groups.

Conclusion: Surface chemical treatment with ethyl acetate improved the transverse strength of the repaired heat cure denture base when compared with mechanical roughening with bur and group without surface treatment.

No MeSH data available.


Related in: MedlinePlus