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A comparative evaluation of the effect of dentin desensitizers on the retention of complete cast metal crowns.

Chandavarkar SM, Ram SM - Contemp Clin Dent (2015)

Bottom Line: The samples were tested using a universal testing machine by applying a load at a crosshead speed of 0.5 mm/min.Statistical analysis included One-way ANOVA, followed by the Scheffe post-hoc test with P < 0.05.On comparing the effect of prepared virgin dentin, GLU based primer, CPP-ACP, LASER and Pro-Argin on the retention of complete cast metal crowns luted with glass ionomer cement on prepared teeth, it can be concluded that Pro-Argin and CPP-ACP showed the best retention in this in vitro study.

View Article: PubMed Central - PubMed

Affiliation: Bethany Hospital, Thane, STVJS Charitable Trust, Thane, Shri Vagad Welfare Hospital, Kutch, India.

ABSTRACT

Context: Desensitizers are used to reduce dentin hypersensitivity. They affect the surface texture of prepared dentin and may alter the retention of fixed restorations.

Aims: The aim was to evaluate the effect of dentin desensitizers on the retention of complete cast metal crowns luted with glass ionomer cement.

Subjects and methods: Fifty freshly extracted human premolars were subjected to standardized tooth preparation (20° total convergence, 4 mm axial height) with a computer numerically controlled machine. Individual cast metal crowns were fabricated from a base metal alloy. Dentin desensitizers included none (control), a glutaraldehyde (GLU) based primer (Gluma desensitizer), casein phosphopeptide (CPP)-amorphous calcium phosphate (ACP) (GC Mousse), erbium, chromium: YSGG laser (Waterlase MD Turbo, Biolase) and Pro-Argin (Colgate Sensitive Pro-Relief desensitizing polishing paste). After desensitization, crowns were luted with glass ionomer cement and kept for 48 h at 37°C in 100% relative humidity. The samples were tested using a universal testing machine by applying a load at a crosshead speed of 0.5 mm/min.

Statistical analysis used: Statistical analysis included One-way ANOVA, followed by the Scheffe post-hoc test with P < 0.05.

Results: All dentin desensitizers showed significantly different values: Pro-Argin (4.10 Megapascals [Mpa]) < CPP-ACP (4.01 mpa) < GLU based primer (3.87 Mpa) < Virgin dentin (3.65 Mpa) < LASER (3.37 Mpa).

Conclusions: On comparing the effect of prepared virgin dentin, GLU based primer, CPP-ACP, LASER and Pro-Argin on the retention of complete cast metal crowns luted with glass ionomer cement on prepared teeth, it can be concluded that Pro-Argin and CPP-ACP showed the best retention in this in vitro study.

No MeSH data available.


Related in: MedlinePlus

Fabricated cast metal crowns
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Figure 3: Fabricated cast metal crowns

Mentions: Wax sprues and reservoirs were attached to the wax patterns and invested in phosphate bonded investment. Ringless casting procedure was carried out. The investment was placed in the burn out furnace. The burn out furnace raised the temperature to 930°C over 2½ h. Casting was carried out in nickel-chromium alloy in an induction casting machine following standardized casting procedure.[20] After the casted investment were bench cooled, the castings were retrieved and cleaned using air-abrasion with 50 μ aluminum oxide particles. The castings were checked for their fit on their respective dies followed by finishing and polishing [Figure 3]. They were evaluated for adequate fit on the teeth using a stereomicroscope. Castings with discrepancies more than 120 μ were discarded. The procedure was repeated until all castings fit the prepared teeth adequately.


A comparative evaluation of the effect of dentin desensitizers on the retention of complete cast metal crowns.

Chandavarkar SM, Ram SM - Contemp Clin Dent (2015)

Fabricated cast metal crowns
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4374318&req=5

Figure 3: Fabricated cast metal crowns
Mentions: Wax sprues and reservoirs were attached to the wax patterns and invested in phosphate bonded investment. Ringless casting procedure was carried out. The investment was placed in the burn out furnace. The burn out furnace raised the temperature to 930°C over 2½ h. Casting was carried out in nickel-chromium alloy in an induction casting machine following standardized casting procedure.[20] After the casted investment were bench cooled, the castings were retrieved and cleaned using air-abrasion with 50 μ aluminum oxide particles. The castings were checked for their fit on their respective dies followed by finishing and polishing [Figure 3]. They were evaluated for adequate fit on the teeth using a stereomicroscope. Castings with discrepancies more than 120 μ were discarded. The procedure was repeated until all castings fit the prepared teeth adequately.

Bottom Line: The samples were tested using a universal testing machine by applying a load at a crosshead speed of 0.5 mm/min.Statistical analysis included One-way ANOVA, followed by the Scheffe post-hoc test with P < 0.05.On comparing the effect of prepared virgin dentin, GLU based primer, CPP-ACP, LASER and Pro-Argin on the retention of complete cast metal crowns luted with glass ionomer cement on prepared teeth, it can be concluded that Pro-Argin and CPP-ACP showed the best retention in this in vitro study.

View Article: PubMed Central - PubMed

Affiliation: Bethany Hospital, Thane, STVJS Charitable Trust, Thane, Shri Vagad Welfare Hospital, Kutch, India.

ABSTRACT

Context: Desensitizers are used to reduce dentin hypersensitivity. They affect the surface texture of prepared dentin and may alter the retention of fixed restorations.

Aims: The aim was to evaluate the effect of dentin desensitizers on the retention of complete cast metal crowns luted with glass ionomer cement.

Subjects and methods: Fifty freshly extracted human premolars were subjected to standardized tooth preparation (20° total convergence, 4 mm axial height) with a computer numerically controlled machine. Individual cast metal crowns were fabricated from a base metal alloy. Dentin desensitizers included none (control), a glutaraldehyde (GLU) based primer (Gluma desensitizer), casein phosphopeptide (CPP)-amorphous calcium phosphate (ACP) (GC Mousse), erbium, chromium: YSGG laser (Waterlase MD Turbo, Biolase) and Pro-Argin (Colgate Sensitive Pro-Relief desensitizing polishing paste). After desensitization, crowns were luted with glass ionomer cement and kept for 48 h at 37°C in 100% relative humidity. The samples were tested using a universal testing machine by applying a load at a crosshead speed of 0.5 mm/min.

Statistical analysis used: Statistical analysis included One-way ANOVA, followed by the Scheffe post-hoc test with P < 0.05.

Results: All dentin desensitizers showed significantly different values: Pro-Argin (4.10 Megapascals [Mpa]) < CPP-ACP (4.01 mpa) < GLU based primer (3.87 Mpa) < Virgin dentin (3.65 Mpa) < LASER (3.37 Mpa).

Conclusions: On comparing the effect of prepared virgin dentin, GLU based primer, CPP-ACP, LASER and Pro-Argin on the retention of complete cast metal crowns luted with glass ionomer cement on prepared teeth, it can be concluded that Pro-Argin and CPP-ACP showed the best retention in this in vitro study.

No MeSH data available.


Related in: MedlinePlus