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

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.

The Retentive Strength of Laser-Sintered Cobalt-Chromium-Based Crowns Cemented by Glass Ionomer and Zinc Phosphate Cements after Pretreatment with a Desensitizing Paste Containing 8% Arginine and Calcium Carbonate

“…The current results support the first null hypothesis of the study, implying that pretreatment with Colgate Sensitive Pro-Relief Desensitizing Paste would have no effect on the retentive strength of SLM Co-Cr crown copings cemented to human extracted teeth with GIC or ZPC. Our results are in agreement with those of another study that demonstrated that pretreating dentin surfaces with Pro-Relief Desensitizing Paste prior to cementation did not affect the retention of complete cast metal crowns luted with GIC [25]. Moreover, in the aforementioned study, pretreatment with Pro-Relief showed the best retention of complete cast metal crowns compared to all other dentin desensitizers tested.…”

“…No significant difference in the bonding strength of composites to enamel or dentin pretreated with this desensitizing paste has been reported [22][23][24]. In addition, pretreating dentin surfaces with Pro-Relief Desensitizing Paste prior to cementation did not affect the retention of complete cast metal crowns luted with a glass ionomer cement (GIC) [25] or the retention of zirconium oxide crowns luted with a resin-modified GIC or a self-adhesive resin cement [26].…”

Clinical evaluation of therapeutic efficacy of selected chemical preparations in the treatment of dentine hypersensitivity in patients utilizing fixed dental prostheses

“…Fluoride varnishes (Duraphat and Seal & Protect) provided immediate relief after application in 68-75% of sensitive teeth in patients with low dentine sensitivity. When sensitivity was intense, the therapeutic effect was on the level of [25][26][27][28][29][30][31][32][33][34][35][36].4% of teeth not responding to the applied stimuli. The therapeutic effect after 6 weeks was maintained at 66.6-70% for teeth with low sensitivity and 45.…”

“…30 Były wykonywane badania, w których autorzy sprawdzali wpływ wybranych metod chemicznych i fizycznych na strukturę obnażonej zębiny po opracowaniu zębów pod korony metalowe. 31 Badaniem objęto 50 ludzkich zębów, które po ekstrakcji temporary cements with pain-relieving properties, antiseptic preparations, chemical methods, physical methods, e.g. laser therapy, are used.…”

“…30 A study was conducted in which the authors checked the influence of selected chemical and physical methods on the structure of exposed dentine after teeth were prepared for metal crowns. 31 The study included fifty human teeth, which after extraction were subjected to a standard process of preparation for metal crowns using a numerically controlled computer. Next, each tooth was treated with a different preparation: glutaraldehyde, casein phosphoptide (CPP) -amorphous calcium phosphate (ACP), laser rays, Pro-Argin.…”