Tensile Strength and Failure Types of Direct and Indirect Resin Composite Copings for Perio-Overdentures Luted Using Different Adhesive Cementation Modalities

Abstract

Perio-overdenture design helps to reduce periodontal diseases and secondary caries on abutment teeth. Composite copings can be cemented adhesively to the abutment teeth with different techniques. In this study, direct/indirect resin composite copings for perio-overdentures, luted using different adhesive cementation modalities were compared. Human teeth (N = 40) were prepared to receive spherical attachment copings and randomly divided into four groups: (1) resin-composite copings bonded directly (DC), (2) composite copings made indirectly, luted with dual-polymerized resin cement (ICV), (3) composite copings made indirectly, bonded with resin composite (ICT), (4) composite copings made indirectly, bonded with resin composite after the immediate dentin sealing method (IDS). Specimens were tested for tensile failure and one-way ANOVA (alpha = 0.05) was performed and the two-parameter Weibull modulus, scale (m) and shape (0) were calculated. Mean tensile load (N) was significantly higher for Group IDS (238 ± 81) than for the other groups (144 ± 53–184 ± 46) (p < 0.05). Group IDS (0.54 ± 0.25 mm) showed significantly higher deformation (mm) than other groups (0.2 ± 0.1–0.32 ± 0.15) (p < 0.05). Weibull distribution presented lower shape (0) for DC (3.33) compared to other groups (3.57–4.99). Cohesive coping failures were more frequent in Group IDS (60%) and mixed failures in other groups (40–60%). In conclusion, IDS copings could be preferred over other fabrication and adhesion modalities.

Immediate Dentin Sealing: A Literature Review

“… Resin coating did not influence the bond strength of RelyX Ultimate, whereas resin coating increased the bond strength of G-CEM LinkForce and Panavia V5. Cesca et al 2020 150 In vitro Tensile load Compared direct/indirect resin composite copings for perio-overdentures, luted using DDS or IDS (Syntac+ Variolink II/Tetric Ceram). IDS group yielded significantly higher tensile load.…”

Effect of Immediate Dentin Sealing on the Bonding Performance of Indirect Restorations: A Systematic Review

“…A total of 15 studies compared the effect of etch-and-rinse (ER) and self-etch (SE) strategies on the bond strength of IDS [ 18 , 19 , 20 , 29 , 39 , 46 , 53 , 56 , 58 , 60 , 63 , 69 , 73 ]. Among the studies that used temporary filling materials, 12 studies [ 20 , 21 , 23 , 24 , 27 , 28 , 31 , 32 , 49 , 73 , 75 , 76 ] used water-setting temporary materials, 8 studies [ 17 , 18 , 19 , 36 , 46 , 48 , 55 , 64 ] used light-cure temporary materials, and 12 studies [ 25 , 37 , 40 , 42 , 44 , 50 , 54 , 57 , 59 , 63 , 69 , 70 ] used temporary cement. In nine studies [ 19 , 22 , 24 , …”

“…Among the studies that used temporary filling materials, 12 studies [ 20 , 21 , 23 , 24 , 27 , 28 , 31 , 32 , 49 , 73 , 75 , 76 ] used water-setting temporary materials, 8 studies [ 17 , 18 , 19 , 36 , 46 , 48 , 55 , 64 ] used light-cure temporary materials, and 12 studies [ 25 , 37 , 40 , 42 , 44 , 50 , 54 , 57 , 59 , 63 , 69 , 70 ] used temporary cement. In nine studies [ 19 , 22 , 24 , 26 , 27 , 46 , 55 , 59 , 76 ], the impressions of the cavities were taken.…”

“…Nevertheless, curing through restorative materials characterized by different translucency [ 90 ] may influence the overall cement conversion, thus possibly affecting bond strength to the dentin surface. In addition to resin cement, IDS improved the bond strength of dual-curing compomer cement [ 62 ] and resin composite as a luting material [ 55 , 76 ].…”

“…Among bond strength methodologies used by the included studies, 37 studies evaluated microtensile bond strength to dentin , 15 evaluated shear bond strength to dentin [54][55][56][57][58][59][60][61][62][63][64][65][66][67][68], 3 evaluated microshear bond strength to Table 2 describes details of the included studies, such as publication year, type of tooth, IDS material, restoration material, temporary material, conditioning method, sample size, test method, and aging. Among bond strength methodologies used by the included studies, 37 studies evaluated microtensile bond strength to dentin , 15 evaluated shear bond strength to dentin [54][55][56][57][58][59][60][61][62][63][64][65][66][67][68], 3 evaluated microshear bond strength to dentin [69][70][71], and 5 evaluated tensile bond strength to dentin [72][73][74][75][76]. The majority of the studies used human molar and premolar teeth, while eight studies used bovine teeth for the bond strength test [50,[69][70][71]…”